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Found 4 results

  1. dvderlm

    idle rpm

    Is it better to idle at 1050 rpm with 15:1 AFR or 950rpm with 14.2:1 AFR ?
  2. My Mk2f failed the MOT today (on emissions), which after all the work I've done on it the last year was a bit deflating to say the least. However the numbers are a bit mental: CO: 12.22% (Fail 0.3) HC: 996ppm (Fail 200) Lambda: 0.669 (Fail 0.97-1.03) My guess from the massive CO readings is a virtually non-existent cat (it looks original to me, certainly very old). Unplugging the lambda sensor on idle does nothing so perhaps that died too? So perhaps I've been used to this rich running for a bit too long and it never was fixed in the first place.
  3. So I was talking with an independent (non stealership) auto mechanic about my 2000 Polo and told him what a lovely little car it was with a cute little 999cc engine and telling him how good it ran now that I've chucked away about half a ton of plastic and hoses from under the bonnet and he assured me that there's pretty much no chance this car would ever pass it's next MOT because it would fail on emissions even if the engine were brand new as the factory made it because the new MOT rules are basically designed to fail all cars more than an hour and a half old so you're forced to either buy a
  4. Gave my bready a bit of an Italian tuneup a few weeks back and since then there has been an intermittent ticking from the engine bay when warmed up - loud enough to be heard inside the cabin but obviously much louder when under the hood. I traced it by ear (as much as you can with these slightly paranoid goose chases) to that little green valve attached to the back of the engine bay. It has a couple of hoses going to it (one black, one transparent), both of which go to that cansiter on the bottom-left of the bay and an electrical connection. The ticking noise can be 'felt' through the pipes cl
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