Question for you turbo guys
10-31-2008, 07:42 PM
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Question for you turbo guys Well, working on a powerstroke, nothing new to me, but i am chasing down a vgt problem, variable geometry turbo, basically it can change the vanes to increase/decrease the speed and boost output by oil pressure and such.
anyhow on to my question of less expertise, i belive i am dealing with a exhaust leak, the reason is i have a serious lack of boost, almost like the vgt is stuck which is not totally uncomman, but you can manually change the angle, so i do so and the boost just doesnt change at all. so what im asking is if you have a uppipe leak would it be audible like a exhaust manifold leak? i keep hearing different things, and just wanted to talk to some turbo guys with some experience in the situation im dealing with.
thanks luke
anyhow on to my question of less expertise, i belive i am dealing with a exhaust leak, the reason is i have a serious lack of boost, almost like the vgt is stuck which is not totally uncomman, but you can manually change the angle, so i do so and the boost just doesnt change at all. so what im asking is if you have a uppipe leak would it be audible like a exhaust manifold leak? i keep hearing different things, and just wanted to talk to some turbo guys with some experience in the situation im dealing with.
thanks luke
10-31-2008, 08:14 PM
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generally speaking if it sounds like a regular exhaust leak on a n.a car its the dp or turbo flange and if it whistles its the uppipe...also if it has a egt sensor u may want to make sure thats seated correctly
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10-31-2008, 09:14 PM
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get a spray bottle put water and dish soap in and spray all fittings and clamps, if it bubbes............................................ ............................there you go!
10-31-2008, 10:39 PM
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its that simple huh? i figured it was going to be more difficult than that but okay ill give it a shot, preferably with the exhaust not too hot i imagine
11-01-2008, 10:30 AM
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i really would doubt u have a exhast leak and cant hear it check all bolts the turbo is right off the manafold??. . chances are its in ur charge pipe.. get a boost leak tester as u wouldnt really be able to here is leaking. . vgt are bad *** turbos. . fast spool no waste gate. .
11-01-2008, 11:51 AM
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i really would doubt u have a exhast leak and cant hear it check all bolts the turbo is right off the manafold??. . chances are its in ur charge pipe.. get a boost leak tester as u wouldnt really be able to here is leaking. . vgt are bad *** turbos. . fast spool no waste gate. .
