Posted by 55 50 Ron on March 30, 2022 at 17:37:58 from (216.114.224.141):
Asking for clues as to what to check for on an IH Maxxforce truck engine (actually in a school bus) that won't idle very well. It hunts up and down in RPM when it should hold steady at about 700 RPM. The hunting is from about 500 to 650 RPM. If is is accelerated to about 1000 RPM it smooths out reasonably well.
Thanks for any clues. (I'm not a diesel engine mechanic)
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