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garrarni

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Everything posted by garrarni

  1. i tried an aftermarket exhaust for a while - 200cell ports x-pipe & mufflers - and got a bad hesitation at low revs, similar to that described. took the x-pipe off and put the OEM cats back on and all good. found that the x-pipe would be great for track type use, but really spoiled the car as a daily driver.
  2. Cheers JFP, but already replaced, with no luck. rhinking about the whole thing. parts aren't too bad, but no idea what the job would involve time/cost wise from the mechanic
  3. been all over engine with some form of mechanics stethoscope - not water pump etc. noise coming from area of main oil pump. could this be causing it? pressure etc all ok. oil changed regularly.
  4. Thanks for the replays so far. Will pass on to mechanic as it is beyond my skills
  5. Hey. New here. Tried for some help on 911uk in the past, but couldn't get help on one particular thing that is bugging me on my car. Thought I'd see if a more global audience could give me a hand / advice. Many thanks to all for looking. :) My car develops a metallic noise / rattle as it accelerates through 3000rpm. It does this in gear and also in neutral. It doesn't happen when cold, but starts as soon as the water temps start to build. You can drive through it to some extent - ie accelerate quickly through the 3000rpm barrier (it goes by about 3300rpm) or change up below 3000rpm, but it is a little annoying. Through my local specialist, we have tried the following: Change exhaust (it has PSE) and cats - no difference Change oil pressure relief piston - no difference Checked heat shields - all seem tight Change ancillary oil pump - no difference I've read that 997s can do this at around 3000rpm as it is where the variocamplus changes over, but no idea if this true or an excuse. There is a very mild 'lumpiness' to tickover when warm (sparks, coils, MAF etc. all new.) Potentially the variocam stuck on the longer stoke...? Really just clutching at straws here, but anyone that may know a bit more would be much appreciated
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