hello all have any one ever had issues with the diaphragm spliting in the actuater? only im looking for a boost leak and cant seem to find any issues with the hoses.. mine will hold a couple of psi then ya can here the impeller trying to compensate by spining up more then ya here the air leak.. it revs perfect on the drive .. what do ya think

thanks
andy

 

its possible i guess; checked for cracks anywhere on the housing or anything like that?

 

thats because you have an air leak
a split diaphragm in the actuator will cause massive over boost

 

I spoke to Martin Hadland about a similar problem on my car, he said to make a adaptor to take an airline on the front of the turbo. Then pump up the intake system up to about 2bar and listen for the leak.

I did, leak found and fixed

 

thanks for that mate, will have a go in the morn, another thing ive noticed is my boost gauge on tick over does not sit at zero.. it sits at about minus 40


andy

 

I think most turbo cars are on vacuum at idle.

 

yeah, it will do mate until it makes boost when your driving it

 

simon when ya say a adapter to the front of the turbo what part do ya mean mate, im running out of options at the mo cheked everything and cannot find any leak, any pics? if not it looks like this one has me beat and its a trip to arnside motorsport in cumbria as i work about 20 mins away.. well fed up as a guy was gona come and look at it tommorow to buy


andy

 

What I did mate was take the intake pipe off the air filter and slide a capped metal pipe inside, with a tyre valve in the end of it so I could use a compressor to pump the system up to pressure.

I would take the time to make one of these or you might end up paying someone else to spend ages looking for a boost leak.