been trying to track down a few running issues today and made a bit of progress.

 

changed the plugs as it had a set of pfr6b11 s in but this has not improved the idle really.

 

so i made up a pressue tester.

 

first major leak was from the n/s turbo feed (the concitenered section) this is never under boost so i doubt that this will help much.

 

there are no other leaks from the front.

 

there are several at the back-one i think is from the idle valve area which i have removed before so i will take this off again and re seal up.

 

i also noticed a bubbling noise which i guess must be coming from the cam covers as the crank case will be pressurised. i do have a bit of an oil leak from both so i might have to pull the plenum.

 

main problem is overfueling and a slightly rough idle which i was hoping was a bad boost leak but it apears not. all other obvious things have been looked at and delt with (except afm). any other ideas?

 

ps should i loose pressure from the dip stick when doing a boost leak test?

check & clean the PTU & water temp sensor,

 

theres a real good vacuum thread here....

 

 

check each one i would, and double check all the IC pipes are done nice and tight.

 

ive had the same issue, just make sure all the above are sorted, then have a potch with the idle valve (off and clean it, then give a good few turns & see how that goes)

thanks,

 

the ptu and temp sensor are fine. i might replace the temp sensor though as it looks like the original.

 

only leaks are around the back but i gave it a run today and no real improvement.

 

off with the aav etc again.

Throttle position sensor maybe 1 to check also.