Cummins pyro problems...
Posted in the Cummins Forum
#1 Dec 13, 2010
I have a Cummins 6CTA8.3-M2 in my com. boat that has been running 100 deg f hotter on the pyro. It still runs pretty smooth and still cruises at 20 kts at <2200 rpm. I had the injectors checked and they were OK. I crack each injector line and the rpm drops.
The injector guy said the pre injector fuel pump may be going out.
The only symptom I see is the higher pyro and lower rpm at idle.
The motor temp is normal. Any ideas ??
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