Do a simple check of spraying brake cleaner around any intake gasket, Throttle body gasket, injectors, EGR and EGR tube as well as any vacuum lines. If there is a surge in the idle in any spot, then you know you have a leak. Good luck Jimmy
@1RoadGarage
Жыл бұрын
Thanks, gonna do that
@jmac7658
Жыл бұрын
@1RoadGarage Be careful with that! Break clean trunks to Fosgeen gas when it hits something over 300 degrees so be careful. Fosgeen is deadly and there no cure. That's why it should never be used to clean part being welded. Look it up.
@markymark5281
Жыл бұрын
@@1RoadGarageTo piggyback off of this comment, clean the throttle body and change the gasket while you are at it. Also, clean the MAF sensor.
@LastTrump7
2 ай бұрын
@@1RoadGaragefind the problem?
@brettdavis80
Жыл бұрын
For what it’s worth: Anytime you do a compression check you should do a leak down check too. You already have the plugs out. The vehicles I work on I have seen good compression but high leak down (30% or more).
@seansmyers2864
Жыл бұрын
Make sure all wires in the fuel injector connectors are tight and not loose with the harness. Take a multimeter and check the resistance in each of them as well as the coils to rule out any resistance issues. You can check the resistance lf the incectors themselves too. Try running some incector cleaner thru the system. Could always sipe down the throttle body and spray the maf with some cleaner to make sure those are clean.
@MN2_Kevin_Hill_1970
Жыл бұрын
Try cleaning your Mass Air Flow Sensor, and Do a fuel injection cleaning and a throttle body cleaning you probably have minimal deposits on an exhaust valve and it can't/won't seal 100% and that could be your rough idle. Have a great day and wish you all the best.
@mod_incllc3235
Жыл бұрын
I second this suggestion on this engine.
@jameshall4385
Жыл бұрын
That sparkplug tester is pretty cool. The front two cylinders being slightly down on compression would have me looking at head gasket. I would do a leak down test on those cylinders. If one was down on compression it could be valve related but because its two a joining cylinders i think head gasket.
@1RoadGarage
Жыл бұрын
Man o man. I hope it’s not the head gasket. Are there any other signs that would rule that out? Truck drives perfectly fine. No smoke out the tail pipe. Oil seems normal.
@MN2_Kevin_Hill_1970
Жыл бұрын
Take your oil cap off while engine is running if you have a lot of blowby at the oil fill there is a strong possibility the head gasket is failing.
@jonschwartz9669
Жыл бұрын
@@1RoadGarage open Radiator cap while engine is cold led it get to temp thermostat opens and then look for bubbles this is one way to check fir head gasket or get a head gasket testing kit combustion tester
@ironclaw6969
Жыл бұрын
Ugly thought. On that engine you need to remove the throttle body and intake manifold to get the valve cover/cylinder head. It adds quite a bit of time to the job.
@jacobormsby9241
Жыл бұрын
That would be more indicative of something wrong with the piston rings.@@MN2_Kevin_Hill_1970
@JamesSmith-jr2rc
Жыл бұрын
Check your battery and alternator output. They can cause a misfire if one or the other is weak.
@KevinNadeau
Жыл бұрын
Thanks for the video Jimmy. I picked up a spark plug tester via your link.
@1RoadGarage
Жыл бұрын
Haha cool! That thing is cool. Saw it in a few other videos and had to have one.
@cnev3824
Жыл бұрын
ive chased that very problem for years on every make since efi became the induction system of all manufactures and it always ends up being a injector with some trash in it , id change the injector for that cylinder or make up jumper rig to trigger it and backflush it
@ryanbandlow533
Жыл бұрын
Hey Jimmy! Love the content! I'm not sure if you have tried it yet but, I know these GM I6 engines are notorious for this issue. The throttle body gets dirty and sticks slightly from what i recall.. as its a drive by wire system it doesn't have a iac motor to take care of idle air.. its definitely worth a shot imo! On the bright side those plugs definitely needed replacement so not a waste of time lol
@MM_in_Havasu
Жыл бұрын
Jimmy, if you have a good quality scanner tool such as an Autel unit or equivalent, that would tell you real quick during a real time test(engine running)which cylinder is misfiring and how many times. It would also read fuel injector pulse width, and maybe you have an injector tip not spraying as well as the others and goes away when warm. Thanks and keep us posted, Jimmy!
@1RoadGarage
Жыл бұрын
Thanks, I’ll look into it! 👍
@jaycalibre609
9 ай бұрын
What tool do you recommend that allows you to monitor fuel injector pulse/spray? Are there really scan tools that can do that?
@tagnut8382
6 ай бұрын
Hey jimmy, I can only echo mm_in_Havasu’s comments other than, if someone was going to make a copy of item I don’t think they would leave out three little dots, I would be more inclined to think that the oem manufacturing process just doesn’t require them anymore.
@jmm1000
5 ай бұрын
@@1RoadGarage any update on the roughness, Jim?
@DenisPrat-sl6qz
3 ай бұрын
Well let him borrow it, what good is that scanner to him lol jj
@RoninDosho
Жыл бұрын
Well... When you do discover what the issue is, That'll be one to help others. Case in point, I first started watching when you did your 1st steering bearing video! That was a big help.
@1RoadGarage
Жыл бұрын
Haha! Thanks for watching and following. Yes, I will be continuing to throw parts at it.
@MrBowNaxe
Жыл бұрын
Boy Jimmy, I feel your pain. I chased a rough idle for months on my '97 Suburban. I see a couple of good suggestions below. As much as you don't want to find out bad news like a head gasket leaking, it's better to find out now than later going down the road at 80! I've been a 1Road fanboy since way back (Cali days), so I really want to know what you find. Can't wait to see what's next.
@josephcullen2512
Жыл бұрын
Looking forward to further diagnostics on the slight misfire or whatever it turns out being
@LA_Commander
6 ай бұрын
Jimmy, with a 20 year old vehicle, there are a lot of things which could be causing a rough idle. Since you have replaced the plugs and found no improvement, I would suggest looking at the fuel and air side of the equation. Is the MAF sensor dirty or faulty? The AIT sensor? The coolant temp sensor? Are your fuel injectors dirty? You mentioned that you replaced the fuel pump already. What about the fuel filter? Possibly a vacuum leak somewhere? Rubber hoses age over time and with a 20 year old car it's likely you have a worn out vacuum hose somewhere. But hey, we love watching your videos so keep on wrenching!
@tossedsalad5532
Жыл бұрын
The real problem with autobile issue. When you think you might have fixed the issue it still needs TLC
@edgardomagana5809
10 ай бұрын
Just started following your channel, thank you for working hard and our jobs easier. God bless
@jobspeedmms
Жыл бұрын
The video conveyed is very educational, friend, the delivery method is clear and detailed regarding spark plugs
@Sa1imand3rB31
Жыл бұрын
Check your O2 sensor, it should be located near the catalytic converter, when that goes out it would cause rough idle
@garyfeltman4482
Жыл бұрын
If the 02 sensor is bad it should set a code.
@stevelangston2359
9 ай бұрын
Not if it’s slow or lazy when cold
@dontderockmerizz3211
Жыл бұрын
Check the engine mounts. But I’m thinking the throttle body is dirty. Other thing is the intake manifold bolts might be loose. Check for torque. Lastly using brakleen look for a vaccum leak. Remember, no codes tells you it’s not a sensor, misfire etc.
@omaral-enazi6465
Жыл бұрын
I was going to say that 😊
@1RoadGarage
Жыл бұрын
Thanks! Yes, gonna grab that brakleen and dig deeper.
@troymecey
Жыл бұрын
I will be buying a spark plug checker tonight. Try a little dielectric grease on the end of the boot when you reinstall them, it will be helpful for removal.
@autophile-cv621
Жыл бұрын
Good video. The tel tale for me was that #4 spark plug. with that residue on it tells me that there is soomething getting into the cylinder that shouldn't be there. Check for coolant or oil getting into the cylinder. If there is something getting in that shouldn't, it may show up on your O2 readings. That is, of there is enough contamination. Just an educated guess. I hate to see you just keep throwing parts at it. Good luck.
@danh2487
10 ай бұрын
Camshaft phaser or timing chain. I just did my chain and it solved the idle issue.
@rufelestrada9791
Жыл бұрын
I've read all the comments through Sept 5, 2023, and I have a similar issue with my Cylinder #1 misfiring randomly, with NO CODES. On my Ford V8 Triton, roller followers go out. They allow the valves to move via a wheel. They pop out of position or freeze/break. I have just opened up my cylinder to examine, and so far no luck. Roller follower looks good. So, we may both have a similar issue, because this cylinder has so much water leakage crustations (like your spark plug) but mine is on the spark plug port, and the buildup is so bad, I can't even get to the spark plug nut area, and I can't remove the spark plug, until I dig/scrape off all the calcium crust. You may also have an internal water leak into the cylinder. Only a Leak Down test will prove it out for both of us....
@joesilva2628
Жыл бұрын
Should record spark plugs in the dark
@bltoth1955
Жыл бұрын
If it’s rough idling but drives fine, I would be checking for a vacuum leak. Smoke it or spray it to find the leak.
@AntonioClaudioMichael
Жыл бұрын
I would suggest a head gasket being there are a couple cylinders down on compression
@edstevens1435
Жыл бұрын
Have you checked the engine mounts?Try putting in nuetral and see if vibration goes away.The mounts are filled with oil and may show signs of leaking.The passenger side usually goes first being next to the exhaust manifold. You can have youre lovely wife assist in starting it while you film it,then watch in slow mo.If the jolt on initial start get worse with colder temperatures its probably the mounts.Dont forget to check the transmission mount also and buy factory GM mounts. Good luck I hate a rough idle also.
@omaral-enazi6465
Жыл бұрын
It happened to me once in my 2014 gmc Sierra After 125k miles I checked everything it was okay I asked many of my friends and all of them told me to adjust the idie because after 125k and 9 years some sensors are not reading right it was 500 rpm when I was parking . My turner guy adjusts the idle in my truck and it runs fine sens then . I hope this helps you Keep the good work
@hb5914
10 ай бұрын
What is a “turner” guy?
@ourv9603
Жыл бұрын
With the engine running, use a laser thermometer & measure the temp of the exhaust manifold @ the cylinder head. The one which is substantially cooler is misfiring. !
@shanebrbich5698
Жыл бұрын
G’day mate! Just watched one of your older videos! Great stuff 👍🇦🇺
@ChrisTheBmxGuy
Жыл бұрын
I just diagnosed a 16 grand cherokee for a misfire. Plug was ashy just like that #4 plug. It misfired only on cold start and somewhat at idle. Pulled spark plug and checked chamber after it ran for a bit and cooled off. Stuck a bore scope in cyl 3 and found coolant sitting on top of the piston
@1RoadGarage
Жыл бұрын
🤦♂️ I might need a scope
@carsrlife
Жыл бұрын
See if there is a TSB on the plug gaps for the trailblazer/envoy... the Tahoe has one for 00-06 to be .040 instead of the .060
@qadirali9666
Жыл бұрын
With the imbalance in the cylinders pressure I tried Engine Restore and it balanced my cylinders almost even
@josegaucin6007
Жыл бұрын
I’m currently going threw the same thing. But it’s my daughters car I’m working on.
@chadouellette790
Жыл бұрын
Every time my silverado runs ruff I clean the MAF. Works for me. Maybe you have already done that, I don't know.
@stickit2theman1
Жыл бұрын
So I read through most of the comments on here and nobody has suggested a clogged cat yet. I see you have a video (which I haven't watched lol) about the cooling system so I assume you changed the thermostat housing already, and besides this is a 2005 and the stuck thermostat-->clogged cat issues are more likely to happen on 1st gen gmt360s. So basically what happens is the thermostat sticks open which causes the computer to continue running the engine rich trying to get it up to normal operating temp. Normal temp for these are about 200-210. Wouldn't hurt to check your temp gauge cause there are reports of around 160 when the stuck thermostat thing happens so it can go unnoticed. Sometimes you can get a code too but not always! This could be the source of your fouled up spark plugs and potentially could cause catalytic converter gremlins for you in the future! Hope something in this word spaghetti helps you out!
@atomicdmt8763
Жыл бұрын
perhaps idle air intake? simple swap. changing mine was a huge difference!
@alphasaiyan5760
Жыл бұрын
Intake manifold gasket or worse case scenario is you have a slight leaking exhaust valve on that #1 cylinder.
@stevesnop3798
Жыл бұрын
these engines are solid but they have a bunch of common issues. Check variable valve timing solenoid, if it does it on a cold start its most likely not that though. also check water pump pulley for side to side play by applying pressure with your hands to the fan. I have seen the water pump bearings go bad to the point the fan wobbles around causing vibration.
@johnfletcher1976
Жыл бұрын
I second the vvt solenoid thing I replaced two on my wife's envoy.
@DemonicShadow_666
Жыл бұрын
I would look at the intake manifold gasket or the valve cover gasket based of cyl 4 plug covered in fluid. they deteriorate with age and heat since vehicle is from 05. i am going through a similar prob with my 96 gmt. do the ETHER test and see if it revs up around the mating points of the head/valves/motor/intake to get a better idea of where to go, and the plug is not the exact issue but cyld 4 is deff issue. most likely intake/valve cover gasket.
@mod_incllc3235
Жыл бұрын
This is a must do test!
@texZR2
Жыл бұрын
I would look at Fuel injectors.. Try some techron fuel additive, it might help and it definitely wont hurt. Not the same beast. but I had a 2012 Cadillac SRX w/150K miles that had very rough idle, thought it was the spark plugs, which they were baked, but ended up it was a fuel injector. Replace one, you might as well replace all of them. Clogged fuel injectors show with a lifetime of cheap Costco gas and the like.
@Tombstone226
Жыл бұрын
perhaps an old O2 sensors that is worn out
@linceycartwright6220
7 ай бұрын
Try changing the crank and camshaft sensor
@ricoselbo6559
9 ай бұрын
Clean the throttle body plate. That gen engine is notorious for crud build up on the throttle body plate and clogging the small gap for idling.
@kikileon2021leonleon-sy2cn
Жыл бұрын
I HAD THE SAME PROBLEM ,YOU KNOW WHAT WAS THE PROBLEM? A SMALL HOSE THAT IS ATTACHED TO THE INTAKE MANIFOLD ,THE CLAMP WASN'T TIGHT AND THAT'S IT .
@amundsen575
Жыл бұрын
check for vac leaks, check misfires on scan tool, find the cylinder, then swap injectors to verify injectors after all the car is 18 yrs old
@1RoadGarage
Жыл бұрын
No codes at all. Here’s a short of my fuel trims: Live Data From 2005 GMC Envoy! Help Me Diagnose Rough Idle! kzitem.infotTO8Oc_T1k0?feature=share
@randyhigginbotham961
4 ай бұрын
That sand textured electrode is atomized oil
@marcelgaud
Жыл бұрын
Wow Jimmy,,, that's too bad. I know your feeling. Different things but yeah I've been there myself. Good luck
@1RoadGarage
Жыл бұрын
Thank you!
@Mike-Capz83
Жыл бұрын
you should run a couple of cans of seafoam high mileage to the fuel and see!
@robertofkennedy
Жыл бұрын
Need to use an oscilloscope with an in cylinder pressure transducer
@iceman45ification1
Жыл бұрын
Something that's good practice when changing your spark plugs is putting a little antiseize compound on the threads. Especially if it's an aluminum head. It'll prevent any galling if you have to replace them again. In any case, nice work Jimmy!! 👍
@1RoadGarage
Жыл бұрын
Hey thanks, yes that would make sense right? A while back I did some research about that and found a few videos from one of which was a spark plug manufacturer that was talking about how the chrome on a spark plug is actually the lubricant. Said that the only time to use anti-seize is when the threads are bare steel.
@iceman45ification1
Жыл бұрын
@1RoadGarage Chrome is corrosion resistant, so that does make sense. Never really thought about that. 🤔
@garyfeltman4482
Жыл бұрын
And boot grease so you won't pull the coil apart.
@GlennHamblin
Жыл бұрын
Take a look at your injectors. If you can try to test them and look for a good spray pattern and no leaking.
@jamothegreat6052
Жыл бұрын
Did you try a fuel injection cleaning? Try running some seafoam. Maybe the valves just need to be cleaned.
@JJPARRA1974
Жыл бұрын
Throttle body and air intake sensor cleaning..... Problem fixed
@mikeburnett7028
10 ай бұрын
Have a friend with a2011 corvette he’s had to change multiple plugs because they go bad just sitting. His car has less than 10,000 miles. Bet he’s changed 6 of the 8. Drive your cars people
@Jeffreeebowski
Жыл бұрын
Love your channel Jimmy, just found it and subscribed recently. I've found lots of helpful information for my '97 Chevy K1500. Btw, which video address your final solution to the steering shaft in your '95? I saw the problem you had with the Borgeson shaft and your comment on another channel regarding the Cunningham Machine shaft (which I just ordered). Did you end up going this route and how did it work out if so? I'm sorry I haven't watched all your front end rebuild vids yet which probably address this... my bad!
@garyfeltman4482
Жыл бұрын
A smoke machine will show any vacuum leaks. I would test the injectors next.
@jimmycorbett4611
Жыл бұрын
You should try maybe replacing the idle air control valve. It could possibly be the source or part of the problem at least. And if it’s not it’s a super cheap and easy part to replace so at least you’ll know that’ll be another thing you can rule out. Only thing is you would probably be running a code if it were stuck open or closed or dirty or somethin, so maybe not it.
@ironclaw6969
Жыл бұрын
That engine has no IAC valve, it simpiy opens the throttle plate slightly to allow idleing.
@jeepinintexas6215
Жыл бұрын
Watch it be something simple such as a vacuum leak or dirty MAF.
@1RoadGarage
Жыл бұрын
I certainly hope so
@il0kan052
7 ай бұрын
Fuel damper, maybe😅
@LastTrump7
2 ай бұрын
@@1RoadGaragewhat was it?
@atomicdmt8763
Жыл бұрын
verify CLEAN GROUND connections to the engine, elsewhere. Distributor cap / rotor good?
@punker4Real
Жыл бұрын
most likely a vacuum leak or needs an italian tune up
@1RoadGarage
Жыл бұрын
🤙
@Andy1416
Жыл бұрын
Any updates Jimmy, did you find out what was wrong? Also too, thanks for the awesome videos!
@DenisPrat-sl6qz
3 ай бұрын
You should check your air pressure
@jimmycorbett4611
Жыл бұрын
How badly is it idling. Is there any way you can put it on video so we can see/hear?
@wyatterpp2206
Жыл бұрын
Should have kept the faithful suburban oldies r the best if miles aren’t ridiculous
@jewermank8536
Жыл бұрын
I knew from the look on your face... Youll find it man
@AntonioClaudioMichael
Жыл бұрын
Just because you swapped all the coils out dosent rule them out you could have got What us mechanics call out of the box bad parts NEW Never Ever Works They could of bren faulty coils out of the brand new Box Jimmy @1Road
@DB-nz9xl
Жыл бұрын
This sounds dumb but get chevron fuel 2 tanks worth and it cleaned up my misfire....I changed sparkplug and wire no help. Fuel with techron fixed.
@patrickscott3378
Жыл бұрын
You have to put in a GM timing chain kit.The chains are bad making your ignition timing off.
@1RoadGarage
Жыл бұрын
Hmm. You could be on to something there. Do you have a video link for more info?
@patrickscott3378
Жыл бұрын
Yes watch South Main Auto on you tube .He has a GMC terrain that has the same problem you have.Engine missing and no check engine light on.The fix was to install a new timing chain kit from GM.
@janakoub1037
Жыл бұрын
I fixed mine with injector cleaner. They don’t like cheap fuel.
@ct1762
10 ай бұрын
with a compression test like that i'd be doing a leakdown for sure. Also did you inspect the IAC valve? I think this engine must have something similar. i'm an outboard mechanic and any idle issues i always check that IAC 1st.
@Blackopsmechanic338
Жыл бұрын
Drive over to Scotty and have him put it on his fancy scan tool. Lol. Peace
@AntonioClaudioMichael
Жыл бұрын
That spark plug dont sound good pitch is higher and its defenitly cutting out 4:42
@jewllake
Жыл бұрын
For as often as you change spark plugs, every 100K miles, and only buying 6 - don't be cheap! Get them from the dealer or auto part store. Way too many counterfeits out there.
@1RoadGarage
Жыл бұрын
I am cheap. 😁
@merrillschaps2325
Жыл бұрын
The three dots are from the factory and you won't see those dots on the new spark plugs.
@jacobormsby9241
Жыл бұрын
Have you checked for a sticky Idle Air Control Valve? Does it only stumble at idle or does it do it even when you're on the gas?
@felipebarron3955
Жыл бұрын
Compa está troca nomás no jala bien, it's a Failblazer, siempre vibra de a madre en los semáforos
@omaral-enazi6465
Жыл бұрын
Engine mounts check it
@1RoadGarage
Жыл бұрын
I know. I’ve heard about the mounts but this is more than that. The vehicle will also sometimes stall or almost stall. Rough idle but smooth driving and idle is sometimes smoother than others.
@ronlind1757
Жыл бұрын
I wonder if you don't have an exhaust manifold gasket leak... can fool you sometimes with a rough sounding idle
@walterphillips9950
Жыл бұрын
If your fuel trims look good you know for a fact it's not a vacuum leak. Plug a code reader in and check the timing. Does this vehicle have a timing belt or timing chain? Might have something to do with the timing of cams etc...
@1RoadGarage
Жыл бұрын
Live Data From 2005 GMC Envoy! Help Me Diagnose Rough Idle! kzitem.infotTO8Oc_T1k0?feature=share
@walterphillips9950
Жыл бұрын
@@1RoadGarage Well for one you need a better code reader. And two that live data didn't show ignition timing information. Those fuel trims looked ok to me but it better to have a code reader produce a graph of the live data or show additional items (like timing ignition)
@antonoudenhoven7573
Жыл бұрын
Always start whit the plugs😉
@JC1993COOL
11 ай бұрын
Does this car have spring loaded lifters?
@markdickinson6434
Жыл бұрын
Have you checked your screens in the variable valve solenoid
@1RoadGarage
Жыл бұрын
Yes, checked and it looked brand new. Replaced anyways with genuine ACDelco. Still have original unit.
@MrYoda1982
Жыл бұрын
Fuel filter,vacuum leak,dirty mass airflow sensor, pcv, evap sensor if it has one
@1RoadGarage
Жыл бұрын
Gonna change the fuel filter but have full 50psi at the port. No mass air flow but have already changed every other sensor. All ACDelco.
@MrYoda1982
Жыл бұрын
@@1RoadGaragetime for a smoke machine to check vacuum system, or have you tried all o2 sensors 🤔
@firstlast---
Жыл бұрын
@@1RoadGarage50psi when it's running normally? Or when it's messing up? Might need to get a fuel pressure gauge with a long hose and monitor it while you're driving
@nirapsingh9773
Жыл бұрын
Fk acdelco plugs, in my opnion ngk is the best, and i have said it a couple of time now, dump a bottle of seafoam TRANSTUNE, yes transtune in your gas tank when its low, add high octane fuel and drive on highway for atleast 3 hours at 100km/hr speed continuously and then change your engine oil. Ffs just give it a shot.
@andrewbarclay6573
Жыл бұрын
Did u gap those plugs to spec?
@antonoudenhoven7573
Жыл бұрын
Maybe it's the loss of compression in cylinder no 1
@thejues3919
Жыл бұрын
I a c sensor maybe and if u want to put a intake gasket in her then go ahead
@ChezJohn
Жыл бұрын
I don’t know anything about these new cars, but could it be timing, or is that too old school lol?
@scottymoondogjakubin4766
Жыл бұрын
Time to dust off the ol'l parts cannon !
@danhambrick6331
Жыл бұрын
I think he already did...😂😂😂😂
@1RoadGarage
Жыл бұрын
Was just going to say that. 🤙
@saintpreferred9223
Жыл бұрын
Only use the plugs that the manufacturer recommends. Nothing else. Same for plug wires, cap, rotor....I never buy any igniton parts online. Only from the dealer, even though its more expensive.
@IIREAPER925II
Жыл бұрын
Could it be exhaust leak 🤷♂️
@michaelmalcolm1985
Жыл бұрын
Them Coil Packs
@lifegoeson4085
9 ай бұрын
Damn I never have problems with my 4.2 vortec
@justpray365
Жыл бұрын
Someone didn’t use dielectric grease on the coils. That’s a bad bad thing.🤣
@keithdenner9441
Жыл бұрын
Do you have a new air filter in the envoy? My 2006 ran rough when I hadn’t changed the air filter in a while.
@MrEyad1990
Жыл бұрын
To find any air leak or vaccum leak use a smoke machine.
@whiskeyfamily6717
Жыл бұрын
Egr or 02 maybe Pcv
@onewheeldeal
Жыл бұрын
Did you you ever change the cam phaser Solenoid, for the variable valve timing? They don’t cost to much and aren’t hard to change. It caused my Trailblazer to misfire when it went bad.
@ironclaw6969
Жыл бұрын
VVT on that engine is exhaust side only.
@Player-hr6tc
Жыл бұрын
Yea you did a lot on that truck maybe check timing
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