GreenGiant2 Posted May 5, 2010 Share Posted May 5, 2010 MACK 300L WITH 193,000 MILES , PUMP HAS NEVER BEEN TOUCHED. SEEM TO WANT TO HUNT AND PULSE WHEN RUNNING DOWN THE ROAD UNDER NO LOAD, BUT WHEN PUT UNDER LOAD IT SEEMS TO GO AWAY ONLY TO RETURN WITH NO LOAD AGAIN. WAS WONDERING IF THIS IS A PROBLEM IN THE PUMP OR IS THIS JUST IN THE LINKAGE WITH THE TRUCK BEING OLDER. TRUCK IS A 1989, I HAVE BEEN NOTICING THIS MORE AND MORE OVER RECENT YEARS. DOES ANYONE HAVE ANY IDEAS. THANKSGG2 Quote We the unwilling, Lead by the unqualified, are doing the impossible, for the ungrateful. Link to comment Share on other sites More sharing options...
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