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payback21

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Posts posted by payback21

  1. Top control arm bushes are stuffed. They knock when they are flogged out. The control arms slide on the bolt making the knocking noise. Hence the reason why it does it more over bumps. Mechanical dude will find it when checking suspension.

  2. If there was a vacuum leak it would increase idle revs. My thoughts are....

    Earth wire on the ignitor not earthed, same goes for the one on the coil pack wiring harness

    Check intake pipe from air pod to to the front of turbo turbo. If its sucking air in, idle will be rough as because fuel/air mixture wouldnt be correct

    Check throttle position sensor. May have come loose or got bumped and has moved.

    Last thing and i know this is going to sound dumb, adjust CAS. I have found once before that my wifes 32 had a miss at idle i could never sort it untill i retarded the CAS one day coz it was pinging under load. It fixed the pinging and and the miss went away. The CAS was way to far advanced. I would say this was done by the last person who changed the timing belt.

    Apart from that, theres not to much to mention as you have already tried them. Hope you have some luck.

  3. What have you done to replace the original plumb back system going from the original crossover pipe to turbo intake pipe? Without it being on the engine anymore this will happen. My drift car was doing the same problem until i put all the old cross over pipe and plumb back system back on. The guy before me owning the car removed it. Its all okay now.

    You may need to configure a bov with a plumb back system for your new plenum.

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