Replaced the fuel lift pump on my Cummins ISL
On my first day back in the US after three weeks in Canada my ISL started acting like it was starved for fuel... not wanting to make more than 50% power even on small hills. Pulled over and changed th...
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6000 miles and almost a year later... still running fine although I do not hear the lift pump running for 30 seconds after I turn the key on???
