Hi Guys,

Here in Colorado we have emissions testing (opacity) yearly with 35% the upper range. Last year with a tired motor the results were in the 6-7% range. This year after a head gasket replacement, new valve seals and guides the results are in the 45-55% range.

I am thinking some adjustment is necessary to "lean" the fuel consumption. Would timing or some other adjustment affect opacity? The car runs great with very little smoke so I am surprised at these results.

Any suggestions?

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2001 E320
1991 350SD 265,000 - SOLD
2000 VW Beetle 1.8Turbo - restored
1997 E320 - SOLD
1988 190E - SOLD
1969 Mustang - SOLD