Hi i did a head gasket on my car all done and back together now nothing changed head off skimmed baco on etc. Now the car will only boost to 10psi it was 20psi. Ideas please i have tried all the pipes to make sure they are correct out of the manual etc. Would the actuater be the problem??? what else controls the boost pressure the length of the bar hasnt changed. Could it be the penny wheel sticking as when i pushed some pressure through the actauter to see if it was working it looked like the bar was bending alot.

Suggestions what to try next i am going to take the actuater off and check the penny moving ok. and whip the exhaust off put a mirror up the back make sure all looks ok and shutting properly in the back.

When i drive the car it doesnt have wastegate chatter like it used to would that be because of me running lest boost.

Cheers

Ian

 

is the amal valve clicking like it should could be loose wire mine had similar fault wiring sorted back to 2bar

 

when does it or is it meant to click do i check the wiring or the amal valve

 

help still needed not resolved!!!

 

With the engine runing wiggle the amel valve plug and see if it clicks pull off and make contact.
also check boost hoses for leaks and loose clips

 

is this the car your trying to sell???

 

fooking hell sussed it out by proccess of elimination. Who would believe it was a split diamphram in the dump valve. dohhhhhhhh. Thanks to all who replied and yes the car is up for sale but might not be soon as the car i wanted maybe sold. I have put it up twice when cars i have wanted have come up etc.

Cheers

Ian

 

Thats why I said check boost hoses. my old one done exact same thing with a tiny split in one of the hoses. was set to 19psi but would hold 10psi and not drop further. well done for finding it mate. a big sigh of relife I bet

 

yeah it was but now gained a missfire doh cozzies for ya

 

constant miss or just on boost?

 

on boost

 

Did you change spark plugs? could be worth a check

 

yes i did and its still there trying a cap next dohhh