I just bought a 1990 xlt f/250 4x4 and it ran great on ride home.rinsed motor.nxt day fired it up.blowing dark blue exhaust.so rich my eyes water.chkd plugs&two so far are black why?

Asked by Dec 27, 2014 at 12:15 PM about the 1990 Ford F-250 2 Dr XLT Lariat 4WD Extended Cab LB

Question type: General

I thought it might have
been water on distributor
but there is none what
should I .ck.

1 Answer


Sounds like you might have some bad plug wires that the water caused to short out or maybe water in the distr. But that just a guess. I never use water to wash off a motor any more cause it gives the electrical components hell if they nor perfect and still factory sealed. Might try removing the distr cap and wiping the inside down with a dry rag. At least that's where I would start.

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