lost all boost pressure
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From: belleview fl
lost all boost pressure I have a 5.3 ttb lost all boost psi while I was driving it .checked all the cold side piping for holes none found .checked blow off valve and it sucks air in the dump port when I rev it up .did my dump valve take a dump or do I have something other going on . 25 in vacume at idle
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From: belleview fl
pulled out on to the street and steeped down on the go pedal and it fell on its face (no boost) not more then 10 min before that I had boost as I left the doc's office . both turbos have no play in shafts wast gates work freely (internal) checked all cold for holes lose joints nothing found
It's definetly something stupid. The same thing happened to me a few weeks ago. One of the couplers came loose from one turbo and I couldn't see it. I had to literally put my hands on it to see it had slipped off. Zero boost means you have a massive leak somewhere, keep looking.
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From: belleview fl
I found out tonight lost a turbo took and presser tested all the cold side no leak looked at turbo's again and found one has a lot of play in and out and up and down so I think one is just blowing threw the other dose that make sence I am lost
When you pressurize the system where does it vent? Can you hear it escaping?
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From: belleview fl
Verify before you do anything. Get a peice of wood or something flat to cover up the inlet of the turbo. Do that and verify it is escaping from there.
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BT= boost tester you pressurize the whole system this way.
How To Make A Boost Leak Tester - YouTube
How To Make A Boost Leak Tester - YouTube
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