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osevr6

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  1. Update Update I put up with it over the winter, but took the plunge and bought a new fuel pump (£75). Fitted it last weekend, and YES! Misfire is gone!!! Pulls cleanly from 1000-2000 rpm in 5th, just like I remember! Engine also runs cooler (?) So, a few pointers - If the fuel pump relay is really hot, the pump is shot. With the new pump (not a genuine one), relay is cold. The old fuel gauge sender was an unrecognised part number (1HO 919 673G) - add £40 for a new sender (1HO 919 673F) to fit to new pump. The aftermarket pump is a poor fit - I reckon it may come loose. Get used to the smell
  2. Finally, I tried the new new fuel pump relay. Looks like the misfire has gone. I suspect the fuel pump is on it's way out - looks like that's going to be the next job!
  3. So it continues... Fitted a new coilpack, ticks over much more smoothly now. However, misfire under load is still there!!! I have also tried a new fuel pump relay, had to wait for the old one to cool before I could remove it - it was hot, hot, hot (Is that normal?) Strange thing is that it wouldn't run with the new relay. I've exchanged it, but not tried it yet, I'll keep you all posted. Thanks again for all of the ideas etc.
  4. Thanks for all the comments so far. Took the fuel pump relay apart yesterday and cleaned the contacts as suggested. Today the car is a bit better, only misfires at maybe less than 2000rpm when in 4/5th. Sort of a stutter and then clears and pulls cleanly. I remember the fuel pump was getting noisy, and now it's quitened down. Maybe it's pulling a lot of current, 'cos it's on it's way out. Would explain the improvement with the cleaned relay, perhaps? As for the hall sensor, wouldn't vag-com have shown a fault?
  5. Ok, so I have a misfire. Nothing much at first, but getting worse. It happens mostly at low revs/high gear and when the engine is warmed up. I've changed the leads (twice) and the plugs (no.6 was fouled). Vag-com shows no errors. I tried the water spray on the coilpack at night, couldn't see any arcing, but misfire was terrible and the coilpack has a crack along the front edge. So, do I take the plunge and get another coilpack? Or is the no.6 fouled plug a sign of something more sinister? If it is coilpack problems, does anyone recommend Probe? £95 + postage on ebay seems good to me.
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