Exhaust leak = decrease in boost?
my boost pattern is at 0.5-0.4-0.5 bar dats bellow the normal 8 psi for the primary and causes the secondary to not turn on...
i know i have an exhaust leak somewhere between the dp and the turbo... i can hear a tik tik tik sound complementing the idle rythm... so can an exhaust leak affect or decrease boost?? i dont see how, so enlighten me... :D |
No but a clogged cat can cause boost problems.
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It shouldn't be able to, unless the leak is between the housing and the turbo manifold.
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tighten the bolts on the dp down...if you still have that sound then check all bolts on the turbos. I had exactly the same problem as you on my old set of turbos (though my boost varied from yours a bit...click click click). I had to take the turbos off and tighten everything up. There is a bolt on your dp that will be a real bitch to reach without doing a teardown.
First I tightened down the dp...which helped some...it sputtered a lot less. I had to pull the turbos to tighten all the bolts as well. toadman had the same problem the same week I did. He replaced his gaskets on his dp as well as a few vacuum hoses that were cracked. j j |
Yep. I had a cracked exhaust manifold and replaced it. I still snug the DP bolts about once every 6 months. They do lose tension from vibration and heating/cooling.
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Originally posted by FormerPorscheGuy No but a clogged cat can cause boost problems. |
first thing first... i have a gutted cat ;) so i guess my boost pattern is not from the exhaust leak... hmmm got to start looking else where.
Artguy: how did you tightened the bolts?? i have the crappy torque wrench... and im not sure how accurate the readings are! When i put back my turbo in august, it was all fine tho... is it a common problem the bolts loses tensions?? or should i get new bolts for turbo manifold, turbo and dp?? Tanx |
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