Great video, thanks. Very informative. It was cool how you showed one cylinder at TDC and one not to show how air can move through the valves and why the cylinder has to be at TDC for the test.
Thanks! The instructions provided were very confusing on this product (I have the same tester). Your video cleared things up perfectly. Great job.....much appreciated! (now I hope my MG vintage race car can score in that 15 to 20% range).
Thanks for sharing this video as my china leak down tool came with No instructions and your clue about about 10-15psi and showing how to set yours up got me going. main hint, plug gauge into attached hose in cyl always LAST.
a friend of mine just recommended doing this on my car. its only running on 3 cylinders and ive done everything i could think of to figure out where its not working. this should definitely tell me where the problem is. thank you for the video!
Very nicely done. Thanks. @red666a . You must have each cylinder you are testing at TDC. That's what he was showing on cyl. #1. It was leaking air because it was not at TDC.
nice if you don't have a borescope to look down there... that is a cool leak down test method if it comes out throttle body /intake manifold it is intake valve ... if it is coming out exhaust it is exhaust valve... provided the leakdown cylinder test is done on each cylinder at top dead center to rule out piston ring or worn bore holes
If you have this tool all you have to do is go to Home Depot and replace the leakage gauge to one that will read 100 psi. The supplied leakage gauge is rated for 10 psi.
I'm going to say that it's most likely the oil drainback line for a catch can setup. The oil return line for the turbo should be on the front side of the engine, and most people run their catch cans on the back, draining to the lower part of the block.
Awesome job! Doing this to my b18c. Sweatin' bullets that I don't have cracked ringlands. If I do, thinking about doing an entire rebuild or do B20V. How do you like the B20V turbo? How are your cylinder walls? I've heard they crack a lot, if I go this route, I will be sleeving the b20. Thanks again!
I tried to post a photobucket link to show you what i was talking about in the other post, but YT doesnt allow for it. Another quick question, was your compressor regulator set that low or was there really more line pressure but the cheapo HF gauge just wounld register it? Thanks
Great video. I have a snap-on eepv309a, I think I need to take it back by the snap-on guy. My leak percentage gauge doesnt rest at 100% when disconnected from evereything for some reason, it's actually past the red by about 1/8" outside of the gauge range. This leads me to wonder if the gauge is now inop and it'll be inaccuarate? @ 1:10 yours is at rest but sitting high (from previous use?), but still in the gauges range. what do you think?
so whenever you do a leak down test on each cylinder, you have to be top dead center? can i use a screw driver to check if im on TDC already? anyways you check for TDC on each cylinder?
I dont think u will ever get 100 seal on rings, there will always be some air escaping the rings, esp when cold and such low psi compared to when the fuel ignites.. more importantly is the exhaust or intake or radiator - u can tape up a hole and leave a tiny hole and spray foamy water over the hole to check for valves leaking, better than trying to listen or feel
Awesome but if it's coming out of the throttle body couldn't it alse be the valves aren't seating properly and need to be adjusted or lapped/polished? And not just bend?
FroztiProductions yes it could be a number of things that have to deal with the intake side of the head. The test is a way of narrowing down the cause of the failure. Then it needs to be further diagnosed by a machine shop.
+TheProPilot warm/operating temp will get the most accurate results. Sometimes this isn't always feasible so you can do it cold, but the results might show a little extra leakage. In any case, you should be close enough to identify a problem. Also, the cylinder you're working on needs to be at TDC on compression stroke.
Hey man if you were to have a bent valve on the exhaust side would you hear it out of the head or would you have to take off exhaust manifold to hear the leak?
