ForcedTorque said:
BUT we ( people such as myself and 87turbo) could use a little instruction on how to check each part needed to check in order to find a boost leak. How do you check for a boost leak.???????????? While under your hood it's hard to get boost, therefor it won't be leaking while you check. I was reading this post hoping his answers would help me find my problems.
Yes to be fair, I guess I should have included the web site link so you can follow the directions in the post
http://groundsky.co.nz/techinfo/TSRM/05_TC.pdf
If you look at #1 on my post, It says see page TC-8 for instructions on how to test pressure? No pressure?
Go on to #2 and check for a plugged air filter. Go to page TC-7 as it says in #2 A good rule is if you can see light through it when holding it to the sun, it's ok. No light means no air, so replace it.
On to #3. read this!!
http://www.supramania.com/forums/showthread.php?t=9164&highlight=boost+leak+test
There are other ways to check for leaks like pressurizing it on the car with an air tank by capping the ends of the IC system and blowing air in and listening for leaks. There is a how to in here somewhere. A common leak is the hose that attaches the 3000 pipe to the intake manifold...
#4, Someone (I forget whom, sorry) posted a quick and easy way to test for a restricted exhaust that I liked, Just pull the o2 sensor out of the 90 deg elbow and secure it somewhere. Now test drive it real quickly to see if it builds boost like step #1 said to test it.
#5 Exhaust leaks are loud and can usually be heard at idle or under loads.
#6 Excessive play in the shaft can cause the turbo shaft blades to rub on the housing preventing boost, Usually this is pretty loud when it does happened. See page TC-14.
Suprapowaz: Good point. More details are needed.
