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Old 07-08-2022, 05:33 PM   #1
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Cummins injector line crack and failure

I own a 2016 Newmar Ventana 4037 with a Cummins 8.9 L engine with 15000 miles on it the number one injector line cracked driving west on interstate 80 in Iowa spraying fuel all over the motor lucky there was not a fire contacted Cummins and they told me that they have a product improvement on that line and there were not enough incidents with the problem that They have no recall also was informed that I should replace the other five just to be safe
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Old 07-08-2022, 06:58 PM   #2
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Someone at Cummins is blowing smoke up your ___. There has been a TSB on the #1 injector line for years. My son had #1 crack 2 summers ago and had to be towed from death valley to Las Vegas, well over 200 miles.
The year before that, his beat friend cracked #1 on I-95 here in Florida and was towed to Orlando where Cummins up graded all 6 tubes.

My chassis left the factory with the upgraded injector lines already installed. We all have the same motor, just different years
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Old 07-09-2022, 07:49 PM   #3
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Got that recall done 6 years ago on my 2015 8.9. It was just a rubber insulator to reduce vibrations to the fuel line.
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