help required please!!

[lee1989]

Ok thanks will be checking all pipes tomorrow, and yea its been scanned  again and still no fault codes, thinking of having a smoke test done if i cant find a split, also starting to have another problem which is when im excelerating it will stop excelerating for a couple of seconds and then pull off  starting to puzzle me now 

[Dalo Harkin]

I personally think you have a boost leak somewhere. just check all the main pipes from the turbo to the intercooler and back up to the throttle body.

Then check all the smaller ones that attach under the inlet manifold / onto the fuel pressure regulator

[WadGTI]

I would be getting spray bottle of soapy water, let the car idle and spray all the hoses and look for bubbling.

I had issue, could not find any leaks via my degrading eye sight and low and behold, spraying it, I picked on up at least 2 leaks that I checked and thought were fine.

[lee1989]

Finally got time off work to have a look at the car but still struggling to find out whats wrong with it  sprayed and checked all pipes cant see any splits in them, changed the n75 valve again but still not solved it,

Under throttle it seems to loose ALL boost for a couple of seconds and the will pick back    what else could this be as im out of ideas now any help much appreciated thanks

[viperjsy]

have you cheacked the maf

[Dalo Harkin]

clean the throttle body

[barry2366]

i had same problem i changed the maf and the coolent senor as both showed up but still had bad idle, then checked plugs and had slight bit of oil in there and decided to change rocker cover gasket and on removal of rocker cover the gasket was rotted to the core, replaced gasket on friday and since then engine has been running fine might be wurth a look?