J2fast wrote:Booztd 3 wrote:Well where is the air going?
The way the boost leak test works is that it seals on either the back of the intake valves, or the front of the exhaust valves. Air always coming out the exhaust indicates a problem with an exhaust valve for example. Also pull your dipstick when you're doing the test and see if you've got a bunch of air coming out the crankcase. If you can't build any pressure and there's no boost leak connection (coupler, clamp, etc) thats noticeable then I'd start looking into the engine.
hhhhmmm.... not that im jumping to conclusions but trying to see worse case, you think the head could be something wrong in there? but im going to redo all air lines and retest it and make sure 50 more times before taking it apart but its crasy that it cant even go past 1 psi on the tester but it can hold 20 psi on the street.
Well, like i said - The air you're pumping into it with a compressor has to be going somewhere. What is the regulator on your compressor set to? I never dial it down I just keep it turned up.
How much more than 20psi does it hold on the street? Loading on the dyno and loading on the street are almost never the same so I can see a delta existing between the two.
I dont want you to jump to conclusions either, or get worried that there's an issue with your engine. However, anytime I've ever boost leak tested an engine, even the smallest leaks were VERY evident to the ear. They may have been a pain in the a** to get to, but they were very easy to hear.