If you have one of these motors, and you have an occasional issue with a sticking injector, you might want to take care of it sooner rather than later!
We have guy with a DD15 that acted up once a few months ago. Very rough start, acted like one cylinder was dead. The shop was unable to track down or replicate the problem to figure out which injector caused the problem. Fast forward to this week. He had a hard time getting it to fire off, and when it did, it ran away. RPM peaked @3050, and shutting off the key had zero effect. Pulling codes showed that high rpm and low rail pressure occurred at the same time, pointing to an injector stuck open, and the runaway was due to excess fuel dumped in the cylinder.
Truck seemed to run fine afterwards, but come to find out, that kind of RPM pretty much requires cam replacement. The lobes are pressed on the shaft, and can twist on the shaft at those super-high revs. So, he basically doubled the cost of his repair by not pulling the injectors after the first incident. Bill is around $10K.
Heads up! DD13/15 sticking injectors
Discussion in 'Trucks [ Eighteen Wheelers ]' started by Hammer166, Jan 26, 2017.
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