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Old 06-22-2008, 04:11 PM   #1
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On occassion .. usually when hot my low idle will pulse.

I seem to have good hp and the engine seems to be running fine.

Just on occasion when I drop to idle speed I hear the engine pulsing.

Any suggestions.

Engine is a 2000 Cummins ISC 330.
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Old 06-22-2008, 04:11 PM   #2
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On occassion .. usually when hot my low idle will pulse.

I seem to have good hp and the engine seems to be running fine.

Just on occasion when I drop to idle speed I hear the engine pulsing.

Any suggestions.

Engine is a 2000 Cummins ISC 330.
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Old 06-23-2008, 03:21 AM   #3
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When were the water/fuel seperator and fuel filter last changed? When was the coolant last changed and at what RPM are you speaking?
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Old 06-23-2008, 09:23 AM   #4
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Full service on all fulids and filters were done last week I was hoping this would take care of it.. .did not.

Idle is about 670 -680 range..
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Old 06-26-2008, 02:17 AM   #5
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on my 350,same problem ,it was a dirty injector. a qt of injector cleaner from flying j corrected the problem.
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