How to create your own boost leak tester under $8 dollars & how to test for boost leaks! 

Crazy how things have gotten so expensive!!

What is a decent air compressor on a budget.

@Brandon Weiss I have the craftsman 150psi 6gal pancake compressor and it works pretty good. I got mine for about $100 + another 20 or 30 for hoses etc. It works great for this kind of thing or airing up tires using an air blower and more light to medium duty stuff, just don’t expect to run a impact or anything large like that on it. Most grinders and cut off wheels are recommended to use on a larger compressor because of air capacity and run time but I have a cheap harbor freight angle grinder that works pretty decent on mine.

2023 this setup will cost you close to $30, still cheaper than buying a premade kit

@@drsnowmon These basic parts are that expensive now 🤔

Glad it helped!

Raanan Harrison worth it bro!

How did it go?

Glad it helped!!!

How is your tester working out sir

My god we’ve been robbed 🫨

just bought it. was $15 lol

​@evancraig11 must be in a very LCOL area then. Just spent $24, didn't even get valve stems yet and I'm only in MI.

Thanks!

You are so welcome!

Thank you! Cheers!

❤H

Hope you find it michael!

Pressure is pressure.

Hmmm I wouldn't know :/

They got 3 inch

@@michaelbenson6775 3" inner diameter, not outer (at least at home Depot, Lowes, and Ace)

For anyone in my situation, I ended up buying a 3" O.D. section of exhaust tubing, and used a hole saw to make a cap for it and welded it up. Worked great. Though I discovered you have to vacuum test your vacuum actuator to properly diagnose function, as that ended up being my issue.

I removed it cleaned everything up just in case and put it back on as tight as I thought would be safe and then tested again. If it's still leaking keep tightening. Be careful not to bend anything those clamps are very strong and could bend your piping.

Any Vacuum or boost leak should be taken care of! It doesn't matter if it's small or big.

unfortunately no.. Let me know if you find out what it was..

@@ChrisGoorbarry EGR vacuum line was off.

You could. Also drive to the gas station and use the air compressor there. 🤷‍♂️

You could also soap water the whole thing first then crank away on a bike tire pump for bubbles 🤣 Probably wont find the really small leaks that present only under high pressure though 🤔

lmaoo that's all of us haha

Find a pvc end cap in the diameter of your intake piping. Then drill/mount the Schrader valve to it. If the pvc is the same diameter as your cone air filter, you won't have to buy a coupler.

Thanks

From the video it is obvious he connected the adapter to the intake of the turbo (which normaly connects to the air filter hose), the turbo output is usually placed bellow the intake. It shouldn't make any difference I guess, beyond that it is probably easier to connect it to the intake of the turbo rather to the output hose of the turbo. The inlet engine valves "should" be all closed when the engine is shut down, since the last compression stroke that finally stops the engine should prevent that piston from reaching it's TDC, making all other pistons somewhere "in between" their TDC and BDC positions. Based on this, there should be no place for air to go from the point of connection to the turbo, except for the leaks of course ;) I am not 100% sure about this second part though, perhaps somebody here could verify it?

The intake valves will always be closed when the exhaust valves are open and vise versa.

@@austinsherwood7188there is a moment where both intake and exhaust valve is open at the same time, it’s when the piston is at the top dead center (not ignition time)

Thanks for the replies! So I talked to a company that manufactures a similar but more fancy version of these, and they said the valves shouldn't both be open (may depend on vehicle). They said start by removing the oil cap and going up to 5 psi, see if there are big leaks, and if so, try putting the cap on and seeing (carefully) if pressure builds up (indicating a bad pcv valve). If all is good, keep going up to 10, then 15. Nice looking units they sell at turboboostleaktesters

You wouldn’t be able to tighten the cap

The turbo my guy

2”PVC plug

Yes it would

Gas station 50¢ air compressor. Easy

Not anymore bro lol I got em all in all like 35-40

Back when I made this video yes lol

Tire Valve Stems

A boost leak test is a vacuum test. It's the same thing.

Putting air pressure where there should be a vacuum will give you the same answer you’re looking for… where is air escaping

You just basically said its not air, its oxygen

@@syniister7055 yeah you’re right. Take all the pressure out of your tires and set them to 35 in of vacuum instead of 35 pounds of pressure and let me know how that works for you in a dynamic situation lmao.

@@jcbenson01 they're not equal in this regard. The terms boost leak and vacuum leak mean the same thing. Either the engine is in vacuum or pressurized under boost. If air is escaping, you're testing for leaks within that closed system, and therefore testing for a vacuum leak. AND a boost leak, simultaneously.