I've watched a few of these press/vac test vids. This is the first one ive seen that knows that vacuum is NOT PSI, but in/hg (or mm/hg). Also: Thanks for the wonderful video, and a huge thanks for not ruining it with crappy background music, and getting right to the point, skipping a lengthy, repetitive intro/outro! ❤❤❤❤
@VintageEngineRepairs
7 ай бұрын
Hey :) thanks for the kind words! I really appreciate it!
@niconine268
5 ай бұрын
Yes. Can't fault this channel at all.
@TheGreasyShopRag
Жыл бұрын
At least a couple major engine manufacturers teach techs that up to 1 pound pressure loss in the first minute is ok. I monitor that when making warranty claims but for other repairs I figure its either tight or it gets fixed. Good video!
@VintageEngineRepairs
Жыл бұрын
Thanks for sharing Scott! I’m like you, it’s either tight or it’s not, if it’s not, I’ll find it lol. Thanks for watching! My SparkCheck’r should arrive in a few days, I look forward to trying it out after seeing it on your channel.
@b.c.goldprospecting1724
Жыл бұрын
Quick and simple. I do the exact same procedure on all 2 strokes that come into our shop. Good video
@VintageEngineRepairs
Жыл бұрын
Good job B.C, it can save so much time and tail chasing can’t it! Thanks for watching :)
@niconine268
5 ай бұрын
So cool. Somewhat of a game changer for me
@niconine268
5 ай бұрын
@@VintageEngineRepairsYes exactly
@donmayberryjrsOPE
Жыл бұрын
Awesome!!! THIS is what we all need to do more often! So many times I've spent many hours repairing a 2-cycle engine and thinking all is ok only to find out....oops, should've done that vacuum and pressure test!! I'M STILL KICKING MYSELF!!!
@VintageEngineRepairs
Жыл бұрын
Quite right Don! 2 main things I always check on a 2 stroke, first the exhaust port for piston skirt scoring and the other is a P&V test :) thanks for watching!
@donmayberryjrsOPE
Жыл бұрын
@@VintageEngineRepairs excellent video! Well done!!
@eduardo_k
Жыл бұрын
It doesn’t get any easier than this, great video! Oh and the tapered pieces of inner tube - brilliant idea! Thanks for posting.
@VintageEngineRepairs
Жыл бұрын
My pleasure :) glad it helped
@niconine268
5 ай бұрын
Im impressed once again. This is a top method for closing up intake & exhaust without getting freeze plugs & plates drilled to manifold spec
@VintageEngineRepairs
5 ай бұрын
Thank you :)
@justinanderson9280
Жыл бұрын
That’s awesome Tom, the tapered tube rubber is a simple solution to seal everything. I was dreading making all different sized rubbers to seal my different chainsaws. I won’t have to now and I can try out my new vacuum tester 👌🏻
@VintageEngineRepairs
Жыл бұрын
Glad it helps Justin!
@Big_Johns
Жыл бұрын
Thanks for the demonstration Tom, I use the cut up inner tube as well. 👍
@VintageEngineRepairs
Жыл бұрын
Good job mate, makes it super speedy doesn’t it!
@RC-Heli835
2 ай бұрын
Heck yea! Love the tapered rubber. No hole drilling!
@VintageEngineRepairs
2 ай бұрын
Glad it helped :)
@kevinjohansen8149
Жыл бұрын
Good summary. I do vacuum test first, because sometimes when you’re pressurize first it’ll force the lips against and pass the vacuum later but if you do the vacuum first, sometimes it will leak
@VintageEngineRepairs
Жыл бұрын
Thanks for the heads up, I have heard that but never experienced it myself! I do pressure first just to avoid, in the very unlikely event of accidentally sucking up of fluids that may be in there lol
@andriyshulga2944
Жыл бұрын
Thank you very much for your concise and informative videos!
@VintageEngineRepairs
Жыл бұрын
My pleasure :)
@radekp.562
Жыл бұрын
Great, I was looking for exactly this procedure to test my engine.
@VintageEngineRepairs
Жыл бұрын
Great :) hope it helps!
@JeffinTD
Ай бұрын
Great video. If you do get a fail, test the mityvac with a plug in it. Great tool, but they do eventually need the seal kit.
@VintageEngineRepairs
Ай бұрын
Thanks for sharing 👍🏻 I always keep one on hand.
@Non-Stick_Pan
Жыл бұрын
Great to find more uses for my Mityvac now! I bought mine a few years ago and only used it once to preload a new turbo actuator for my car, it's been gathering dust since. I've already made one of your adapters from an old spark plug :)
@VintageEngineRepairs
Жыл бұрын
Great stuff! Glad you’re enjoying my content!
@GuysPlayingWithTools
Жыл бұрын
That's a good test for case leaks. Sometimes looking at the cylinder walls won't tell the whole story.
@VintageEngineRepairs
Жыл бұрын
Spot on bill!
@Terry-r6o
Жыл бұрын
Nice job man. Practical thinking
@VintageEngineRepairs
Жыл бұрын
Thanks! Glad you enjoyed it!
@spelunkerd
Жыл бұрын
What an excellent channel, we think alike.
@VintageEngineRepairs
Жыл бұрын
Thank you! How did you find me?
@KensSmallEngineRepair
Жыл бұрын
I like the timer feature, good Vid Mate!
@VintageEngineRepairs
Жыл бұрын
Thanks Kenny!
@BrucesShop
Жыл бұрын
Thanks Tom. I missed the vacume test on my old saw. I did do a pressure test .
@VintageEngineRepairs
Жыл бұрын
You’re welcome Bruce! Yeah that vacuum test is certainly important :)
@JeffOlsen-q8s
6 ай бұрын
Thank you for such a clear and concise production! One question ... during the vacuum test there's a settling-down period at the beginning: the gauge keeps dropping toward zero and it looks like the vacuum isn't holding. You keep pumping and wait a while, and eventually get a stable vacuum to begin the test. What's going on during that settling down period? How can you tell you're not seeing an actual leak? Thank you again. Absolutely excellent video!
@VintageEngineRepairs
6 ай бұрын
Thank you! That’s the air bleeding past the piston rings as well as the rubber inner tube stretching and seals too! Keep pumping until you no longer see it drop :)
@battlehrfred
9 ай бұрын
excellent sir 100-100 lot s of info in 5 minutes!! ty so much
@VintageEngineRepairs
9 ай бұрын
You’re very welcome!
@williamemerson1799
Жыл бұрын
Excellent as always.👍🍻 Still have an old plastic MV from the early 80's used to check vacuum advance, but it's vac only. Me thinks there's an 8500 in my future. Thanks for spending $75-$80 for me.🤣
@VintageEngineRepairs
Жыл бұрын
That’s awesome :) thanks for sharing!
@tinkeringtaylor3053
Жыл бұрын
Great tip Tom thank you 👍
@stevo3644
7 ай бұрын
A smoke test I find very helpful as well as you can identify where the leak is coming from.
@VintageEngineRepairs
7 ай бұрын
Interesting, I use it for a leak down test but not a pressure and vac test!
@356Rover
Жыл бұрын
id be interested in seeing you do this on an old outboard 2 stroke!
@VintageEngineRepairs
Жыл бұрын
If one comes along, absolutely!
@356Rover
Жыл бұрын
@@VintageEngineRepairs hopefully a nice 6 cylinder tower of power
@barryewalt3250
Жыл бұрын
Great video again Tom..
@VintageEngineRepairs
Жыл бұрын
Thanks Barry
@victoryfirst2878
2 ай бұрын
Could you please tell me what tapered rubber seal size you made Sir ?? This will help me out so well. Thanks fella too. vf
@VintageEngineRepairs
2 ай бұрын
Honestly I just eyeball it to fit, then taper it
@pauliekruger7639
5 ай бұрын
Great. But how do you build that spark plug air adaptor? JB Weld?
@VintageEngineRepairs
5 ай бұрын
Yes - I made a video on how to make one :) kzitem.info/news/bejne/uKuhtW2Xnahhlqg
@pauliekruger7639
5 ай бұрын
@@VintageEngineRepairs thank you
@Tyrant2PointO
Ай бұрын
@@VintageEngineRepairs I was just going to comment on how you would go about making one of these as I'm currently doing a second re-build on my MS360 Pro after loaning my saw out to someone that had one of his buddies mess with the carb to "get it running better" and I need to figure out how to best ensure I'm doing this right. I really don't want to do this a third time if I don't really have to so THANK YOU for having a simple and to the point video and ensuring every step of the process is fully visible and thoroughly explained!
@RobsChannel-dc1nn
6 ай бұрын
Very informative, thanks for sharing.
@VintageEngineRepairs
6 ай бұрын
You’re welcome :)
@robcole332
4 ай бұрын
What a great video
@VintageEngineRepairs
4 ай бұрын
Thanks!
@rolfgrosseholz1311
Жыл бұрын
That sort of test will only show you if its bad. In college we tested them under water to find all the leaks. That is the short engine. That will pick up the small leaks.
@VintageEngineRepairs
Жыл бұрын
Pressure tests will often hide an oil seal leak in 2 strokes as the sealing lip gets pushed down and onto the crankshaft. The vacuum test is the correct test to do for an oil seal. That’s certainly not something you want to do under water - or with any water for that matter.
@rolfgrosseholz1311
Жыл бұрын
@@VintageEngineRepairs I was trying to cover all leaks. The one under water i was talking about in college picked up a defect in the cylinder casting. Little bubbles coming out at 5 psi. Others had leaks at crankcase bolts on Victa engines etc.
@01bonny790
5 ай бұрын
I understand the soapy water to check for leaks under pressure, but how do you determine the source of vacuum leak? You mentioned light oil, do you start dripping oil around possible leak points and watch for when the vacuum gauge stops dropping? Loved the video, it took a lot of the mystery out of performing the tests!
@VintageEngineRepairs
5 ай бұрын
Thanks for the kind words, the only place that will leak under vacuum and not always under pressure are the seals. Therefore, yes very thin oil, or better yet 2 stroke fuel and oil mix. :)
@01bonny790
5 ай бұрын
Thank you so much, that's very helpful. I've been around engines for decades, but I'm new to 2 strokes and channels like yours make it fun to learn, cheers
@BSSMALLENGINES
Жыл бұрын
Great video Tom
@VintageEngineRepairs
Жыл бұрын
Thanks Brandon!
@almclean4835
Жыл бұрын
Great video Tom,
@VintageEngineRepairs
Жыл бұрын
Thanks Al!
@Ivan27arg
15 күн бұрын
Great video. the pistón are in BDC?
@VintageEngineRepairs
15 күн бұрын
Hey, thanks! It doesn’t matter as the pressure will push the piston down and if it doesn’t it passes the rings anyway :)
@RayofallTrades
Жыл бұрын
Very well done video my friend
@VintageEngineRepairs
Жыл бұрын
Thank you!
@justinf1343
6 ай бұрын
Thanks for sharing. Will this be the same for a 2 stroke stone saw, that I don't think has oil inside the crankcase. Well, at least I have not seen anyone mention draining oil when replacing crank bearings.
@VintageEngineRepairs
6 ай бұрын
As far as I am aware, concrete saws are 2 strokes, same principles, yes! :)
@vinopan5374
Жыл бұрын
Excellent video, at 3:53 min you say 15psi I believe you mean 15 in Hg, correct?
@VintageEngineRepairs
Жыл бұрын
Spot on, my apologies - thanks for the correction!
@wow344wow
11 ай бұрын
Hi V E R, thank you for this very informative video. Can you please advise on a good budget vacuum/pressure with dial unit that is suitable to read small 2/4 stroke engine's. I have 4 small engines but cannot afford the 8500 unfortunately.
@VintageEngineRepairs
11 ай бұрын
Hey, glad you enjoyed it! Look on eBay :) one that does pressure and vac is important! Hope it helps :)
@dousuke1979
4 ай бұрын
whats the thing that you screw in the cylinder instead of a spark plug called?
@VintageEngineRepairs
4 ай бұрын
I made it :) kzitem.info/news/bejne/uKuhtW2Xnahhlqgsi=twwu8TiJfI3Wn0ih
@sypher0101
Жыл бұрын
I'm a little confused about the vacuum test. You did a pressure test first which passed, meaning there's no leaks, including past the piston rings, correct? If so, how does a vacuum test via the spark plug test the oil seals, if the rings tested ok? Why wouldn't the vacuum remain in the cylinder and not suck from the area around the crankshaft?
@VintageEngineRepairs
Жыл бұрын
Because it passes through the transfers :) also past the rings too! Thanks for commenting 👍👍
@Gssmallenginerepair
Жыл бұрын
Hello sir, could you do a video with the engine on the machine. Like how would you block off the exhaust port of the shroud is still on the engine? Let’s say a stihl weedeater? Thx
@VintageEngineRepairs
Жыл бұрын
You can’t you need to take the cowling off to get to the muffler :) thanks for watching!
@Gssmallenginerepair
Жыл бұрын
@@VintageEngineRepairs ty sir.
@Gssmallenginerepair
Жыл бұрын
Great video. Do you have to remove the engine like you have it there?
@VintageEngineRepairs
Жыл бұрын
Thanks! You don’t have to, you can just block the ports, if it holds then great. If you find it’s leaking, then stripping parts off to get access to the leak is necessary.
@Gssmallenginerepair
Жыл бұрын
@@VintageEngineRepairs thx for the reply. Could you tell me what size barb and thread size is the fitting. Like 1/4 x 1/4? Thx
@bretthaas4606
Жыл бұрын
Can you seal it off from the other side of the carburetor? I did on a weed eater and found that the shaft for the butterfly valve was leaking air. The weed eater runs okay but I’ve had issues keeping the air/fuel adjustment consistent.
@VintageEngineRepairs
Жыл бұрын
There will be a very slight leak even from a good throttle shaft, but it should be minimal. That can mess up the reading, pressure test that separately :)
@facundopereyra8455
9 ай бұрын
Can i use this to see if there is a air leak around crank seals?
@VintageEngineRepairs
9 ай бұрын
That’s correct yes.
@bullitanaconda
8 ай бұрын
Im curious to know how did you do the spark plug connection
@VintageEngineRepairs
8 ай бұрын
Hey, i did a video on it :) kzitem.info/news/bejne/uKuhtW2Xnahhlqgsi=QkFspQVWau82cYl8
@ODWALLA123
Жыл бұрын
I Appreciate You !
@VintageEngineRepairs
Жыл бұрын
I appreciate you haha thanks for watching and commenting :)
@baileybattistuzzi5651
Жыл бұрын
Hey tom, How did you make the spark plug for pressure testing ?
@VintageEngineRepairs
Жыл бұрын
Just cut the crimp off the metal spark plug, remove it from the porcelain and then add a barb, glued in place wjth epoxy and add an o-ring
@gabrielx2389
11 ай бұрын
hi, I'd like to know how you make the adapter, will you make a video for it ?
@VintageEngineRepairs
11 ай бұрын
I have already :) have a look through my videos 👍
@gabrielx2389
11 ай бұрын
@@VintageEngineRepairs thank you my friend
@mattheww7671
Жыл бұрын
Great video thank you
@VintageEngineRepairs
Жыл бұрын
You’re welcome :)
@rockyholt4060
Жыл бұрын
Where can I get one of those spark plug adapters?
@VintageEngineRepairs
Жыл бұрын
You just make them :) I’ll do a video!
@ricks5984
7 ай бұрын
In addition, maybe a smoke test to seek out any leaks??
@VintageEngineRepairs
7 ай бұрын
That is more for a leak down test, the pressures are way too low to show any smoke dissipation. Unless you some how pumped smoke in to the engine maybe!!! As a point of reference, a leak down test (with smoke) is normally done at around 100 psi, a pressure and vac test around 5psi.
@tobesmith7632
Жыл бұрын
I don't know about going through the spark plug hole to check. the pressure And vacuum. That cylinder he's going to hold 150 PSI..
@VintageEngineRepairs
Жыл бұрын
You’re confusing compression and pressure there. Yep I like to test through the spark plug hole if possible.
@xx3868
10 ай бұрын
Worse if your engine sort of runs ok but shuts down after 10-20 mins hot and fuel system is ok?? Drove me crazy till i realized the coil was de- laminating and shorting when HOT! I guess to test you could put a hair dryer on the coil and watch the resistance go down a bit? and then suddenly short out!!
@VintageEngineRepairs
10 ай бұрын
Thanks for sharing :) yes a classic coil issue! Or a failing condenser in the old machines
@jeannettehyppolite9912
Жыл бұрын
Good!
@kwinngeer9070
6 ай бұрын
what tool did you use?
@VintageEngineRepairs
6 ай бұрын
Here you go :) Mityvac Pressure & Vacuum Tester - amzn.to/3vysI3V
Пікірлер: 128