M884 FUEL SYSTEM PROBLEM

From: Mel Miller (nourmahal@worldnet.att.net)
Date: Mon Jan 19 2004 - 11:05:27 PST


Howdy List,

I hope someone can help with my fuel system problem. I have a stock
military 318 engine in my 1977 M884 pickup. I recently replaced the
Carter carburetor with the military Holley carburetor. The fuel pump is
relatively new and flow rate and pressure exceed specifications.
Ignition and timing are set properly and firing properly. The plugs are
clean and a uniform gray. When I run it every day or every other day
everything is OK. If I let it sit for a week or so and then crank it it
will run for a few seconds and then die. no amount of cranking will get
it going.

Careful inspection reveals a dry float bowl, dry inline fuel filter dry
fuel pump and dry line back to the tank. I have never seen a situation
where fuel siphons back into a tank from a float bowl. This has happened
twice now. A mechanic who specialises in Dodges says that he had to
pressurize the tank to get the fuel back to the fuel pump.

All ideas gratefully explored.

TIA,

Mel Miller
Corpus Christi, TX
361-937-3317
M725
M884
86 VW Doppelkabin Drop Side Diesel PU (OD)



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