From: Mel Miller (nourmahal@worldnet.att.net)
Date: Sat May 01 2004 - 21:15:20 PDT
Howdy List,
This mileage thread gives me a good excuse to share the results of my
problem resolution process with my 1977 M884.
Some may remember a while back that I was having problems with fuel not
staying in the float chamber if the truck sat a few days without use.
The fuel pump, although appearing to be relatively new and putting out
decent volume when diverted to a catch can, was unable to push fuel past
the filter into the carb. Many people sent in suggestions centered on
stopped up fuel lines/ fuel tank unvented, etc. I replaced the Carter
Carb with a NOS late style Holly. That did not help. Finally I turned
the problem over to my NAPA store mechanics. It turned out that the fuel
pump was bad - it would pump when disconnected from the filter but would
not develop pressure. Secondly, the NOS Holley seals were so dried out
that fuel was draining out of the float chamber. I told them to rebuild
the carb with new gaskets and replace the fuel pump. Now I am back to
13 - 15mpg on the highway not towing anything but with a good tune up
and fresh Champion Plugs and HD plug wires.
YMMV,
Mel Miller
Corpus Christi, TX
361-937-3317
M725
M884
86 VW Doppelkabin Drop Side Diesel PU (OD)
On Saturday, May 1, 2004, at 10:42 PM, Movnmanj1@aol.com wrote:
> I am getting about 7-8 mpg pulling 6000#'s. Have you changed the
> carb, tuneup, etc.? Perhaps a brake dragging? Something is terribly
> wrong, I should think. Are there any other M880 users that can
> contribute? We got to get this fixed!!
>
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