MGMC

iTrader: (46)

ive been chasing a exhaust leak on my own for the past couple days with no luck. ive double and triple checked all my piping and well, everything is tight. i finally get a buddy to sit in and give it a rev while im underneath and the sound is coming out my exhaust. its not the motor, its the typical sewing machine sound under the hood. DOC put the scan tool on and theres no knock or anything. Is the turbo going out? its making about 4psi less than normal and instead of a smooth whistle its a choppy machine gun whistle. i pulled my filter off and the turbine spins freely without hitting the housing. ive pretty much ruled out everything else, i just need some conformation from you turbo experts.

thanks,

-mike

98Z28CobraKiller

iTrader: (17)

How about a hotside exhaust leak (between the turbo and the heads)?

daniel6718

iTrader: (36)

thats what i was thinking...check between head and header...and near turbo...if u cant find it exactly use a piece of paper and see if the air comming out will blow on it

MGMC

iTrader: (46)

the only thing i haven't tq checked is the turbo mount. ill head out and do that. i know the log and drivers header are good though.

MGMC

iTrader: (46)

1 loose mount bolt and a spark plug wire was intermittent. ******* gremlins.....thanks for the help fellas, trucks good to go