I like Max's theory, should be pretty easy to test too, if its running a
little rough does it have good peel out power? If the fuel pump was getting
weak or you had crud on the intake it should shudder and act bad on high
demand...
Based on my history with Ford I'm going to guess you've got an electronic
module fixing to fail.
-Curt
On Wednesday, June 6, 2018, 10:33:34 AM EDT, Meade Dillon via Mercedes
<mercedes@okiebenz.com> wrote:
Fuel or ignition, so here's a couple general ideas, but I don't know
anything specific about your model truck.
If it has a distributor and coil, perhaps the coil got hot and wasn't
putting out good spark?
May the fuel filter(s) are due for a change, getting plugged up during the
high fuel consumption and then if you let it set, the sediment drops off
the filter elements and allows enough fuel flow for smooth running?
Maybe the fuel pump(s) are getting weak, and when they get too hot after
the extended use, pressure is not sufficient for smooth running?
-------------
Max
Charleston SC
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