ISM CM870- fuel pressure

[swenlarson]

Hi all- update on this one.

Wanted to investigate fuel pump assembly along with shutdown solenoid. Unit was crusty/rusty (due to this being a truck with a salt/sand spreader). Once overall condition was clear (bolts frozen for solenoid and other parts looking ready to disintegrate) discussed options with customer and he decided to replace pump assembly with a REMAN unit. This unit included a new shutdown solenoid.

After multiple test drives with a gauge hooked up pressure pretty much stayed around 225-250 and low power issue is now gone.

I am not sure if was a weak solenoid or the pump itself but the pump and the solenoid were very corroded, in poor condition from a visual standpoint and obviously one of the two items was the cause of the problem.

This one appears to be FIXED.

Swen