98 v10 no start when cold and it rains

Asked by Sep 04, 2017 at 07:49 PM about the 1999 Ford F-350 Super Duty

Question type: Maintenance & Repair

I have a 1999 winnebago adventurer with a 98 ford v10 6.8L engine, on a
superduty frame.
When it rains, i have  crank no start.
once the sun comes out and things dry up, MH start and runs with no
problem.
I have fuel pressure but no spark.
before I start swapping out parts I fear I may have a short.
in the old days the distributor cap would be suspect, but I have no distributer
cap.
are their parts that would intermittently fail under high humidity conditions?

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