How bad are the early paccar engines?
Discussion in 'Kenworth Forum' started by Thetrashnoob, May 17, 2020.
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Paccar,Cummins, Detroit Volvo,mack. All Trucks have there problem.some people Prefer this engine.some people prefer that engine.it just the luck of the draw.
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Late to the party but I have a 2009 paccar px8 with almost 800k on it and 21480 engine hours. It is just a Cummins 8.3 and they are good little motors. I have a 330 / 1000ftlbs and haul at an average weight of 38k lbs with a 10 speed Eaton. Hasn't need much of anything aside from general maintenance. I am getting ready to do a in frame as she's starting to get some blow by and has a mysterious oil leak in the driver side of the engine block. I'd buy 5 more of these trucks with the px8 if I wanted.
But yeah the px8 or the newer px9 are just the ISC while the px7 is the isb 6.7 -
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Did you pull oil samples regularly? Reason I’m asking, I have a PX8 with 530k on it that showed normal levels on every oil sample up until the last. The aluminum levels jumped drastically. It was sourced as possible piston skirts. Just curious if I’m looking at an in frame at 530k miles and 13850 engine hours.
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Parts and labor ran me right at 16450 including the rods and a new injector that broke in the rear down. Turbo has a out 310k miles on it and doesn't show any major issues either
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