reelwell Posted August 10, 2011 Share Posted August 10, 2011 2007 CHN613 460hp 18 fuller 46 meritor air rears. Under load (100,000lb gross) whole truck shakes, above 60 mph grinding growling from transmission area, skipping when accelerating followed by puff of blue smoke. Replaced u-joints, balanced driveshafts, new shocks, replaced and adjusted ride height valve, tires replaced. No sucess, any ideas?. Quote Link to comment https://www.bigmacktrucks.com/topic/20129-power-and-vibration-issues-2007-chn613/ Share on other sites More sharing options...
shortstack Posted August 11, 2011 Share Posted August 11, 2011 Engine misfire?? Quote Link to comment https://www.bigmacktrucks.com/topic/20129-power-and-vibration-issues-2007-chn613/#findComment-83511 Share on other sites More sharing options...
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