[W126 Coupe] rough idle

[Doug Gavin]

Dan Landiss wrote:

> on 8/11/2007 4:31 PM Doug Gavin wrote:

>> {much clipped for brevity}

>> this slight idle roughness is annoying but I have my limits to cost 

>> vs tolerance at the moment. Sooner or later I'll pony up the bucks to 

>> make it right and all will be at peace.

>

> Curiously enough, I got rid of 90% of my rough idle feel by gapping 

> the spark plugs out to 0.045" - 0.050" (call it 1.2 mm).

>

Thanks Dan, that's low tech/low cost and worth a try.

Doug