High block learn ????

[chops]

What are the main causes for bl mines is at 150 at. Times the lowest I've seen it is 139 any ideas???

 

[aminga]

Vac Leak

 

[chops]

high bl

I spreyed down the intake with carb spray and no changed in idle

 

[TurboBob]

is this the idle BLM, or cruising?

What MAF, chip, PCV valve?

Are you running valve cover breathers or the stock hose from the valve cover to the turbo?


Bob

 

[turbo nasty]

I had every fiiting fitting on a billet vac block leaking, egr leaking, 3 ports on the intake leaking all at the same time on a engine.

Sprayed carb cleaner, brake cleaner, propane, water, etc and the engine and it never... repeat.....never changed idle etc.

Best way to find the leaks is to psi the intake track after the engine has sat over night and most of the lifters have bled down some. You will not be able to PSI the intake to say 30 psi this way but can achieve 10 or psi on a stock engine. Best to pull teh rocker shafts then you can fully psid teh intake I go to 30 psi.

Once psi'd spray with a soap solution and watch for bubbles.

Thats the only way I found the leaks. IMO if you have a TR it should be done anyway.

Could be the seals on the throttle shaft as well.

 

[turbo nasty]

Heres a good tester

Intake Leak Pressure Tester