you ned to relocate the pump driver off of the injection pump. what
happens on those things is the driver is inadequately cooled by the
pump body and slowly cooks itself. go to www.thedieselpage.com
Install an in-line diesel fuel filter/water separator, like the Racor 645,
between your fuel tank and the electric fuel lift pump. You can choose
between 30micron, 10micron and 2micron filter elements. Check the
www.62-65-dieselpage.com website for advertisers (or do a search on "racor
645" other installation/troubleshooting tips. Good luck.
I believe the worst enemies of a diesel fuel injection pump (and injectors)
are water and foreign particles in the diesel oil, and low lubricity diesel
oil. The fuel filter/water separator installed between the fuel tank and
electric fuel lift pump will address the first two. Your electric fuel lift
pump will also benefit from the filter/separator (some replacement electric
fuel lift pumps will have their warranty voided if no filter is installed
between the pump and the fuel tank).
Franko, that is a valid point with regards to installing a water separator,
good insurance for your fuel system especially the injector tips. But the
problem with the 6.5 pump was identified by Bret, and that is the correct
answer for the 6.5 issue. Too much heat not water in the fuel.
sell it or learn to grin and bear it
it's a known problem and GM offered **free** extended warranties to cover
the pump issues
I had mine changed 2X in 240K km, both under warranty. Sold it when it
started acting up the 3rd time and was out of warranty.
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