B8136 Posted July 10, 2006 Share Posted July 10, 2006 I have a problem that I am unable to remedy. My E-9 has a leak somewhere between the turbo and the combustion chamber. The problem only shows up when are on the high side of the transmission and in a good pull. You can watch the boost pressure guage go from arond 23 psi to no more that 10, sometimes 0 boost. The entire time that that you have this reduction in boost you can hear the whistling sound of an air leak. You can change the tone of the air leak with the throttle. Now if you were to stop or coast in nuetral for a few seconds the leak will seal itself off. You can keep it from blowing off by keeping the boost under 20 psi on the high side of the transmission. It has become aggravating.I have aired up the the entire system to 33 psi and no leaks. Actually held the pressure. This is from the intake on the turbo.There is no wastegate on the turbo.I have replaced all the 0-rings in the system and changed the gaskets on the air plenum.I have disconnected the hoses and checked them out I have replace the band clamps on the hoses.I have not changed the hoses because the held alot more pressure than the engine will make.Now it seems it would be easy to find. Somedays it's pretty good other days it makes you want to park the truck. I've just about run out of ideas. Any help would be appreciated. Quote Link to comment Share on other sites More sharing options...
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