timing questiond

[Pawel66]

You then re-adjust the idle again to specs.

[Berggreen]

Hi Christian,

Thanks for advice, interesting!
Adding more shims under the barometric compensator will also influence the CO level of the idle speed adjustment which should be between 3,5/4,5%.  Do you have experience what the level than should be?

Thanks, Peter

Hi Peter

Yes and CO% 3.5-4.5 if possible, and it does not go out at the end of the warm runnnng program. If it does, I give it a bit richer mixture at idle with the idle mixture screw.

I think the most important is that the mixture is correct in the mid and high rpm range. And this can only be checked by watching the spark plug color, unless you have access to a dyno-field, where you can measure the CO under load.

Also watch out for pinging, indicating a too high advance. But it should’nt be, if you have 8 degrees BDTC at idle (800 RPM).

Cheers,

Christian

[Peter]

Thanks Gents,

I'm going to take a close look at the spark plugs and fuel mixture as it is not the intention to damage the engine.