cbennett@kpmg.com wrote:
> 
> Hi there,
> 
> I have a probem with my 86 Vanagon GL.  It starts right  up, even on the coldest
> mornings, but when it has warmed up, it starts to misfire, running too rich,
> black smoke out the exhaust, and with  no power to pull even the smallest hill.
> But when I turn the motor off and start it up again, it runs fine for awhile,
> and then the misfiring starts again with the black exhaust smoke.
> 
> The vehicle had been setting for about a year, and I thought it might be bad
> gasoline, but after several tanks, it still has the problem.
> 
> Any ideas as to what would cause these effects?
> 
> Charles

Check the Oxygen Sensor.

Larry (I've been wrong once so far today, why not try for twice)