We did continue to have some issues with the truck. It would have a rumble in the idle at times, or a hiccup pulling at 1500 rpms. It was a saga, but we ended up replacing all of the injectors with some rebuilds out of florida. They were $150 each vs $550 for cummins. These slowly went bad on us in short order. So then we replaced these with $250 rebuilds out of CA. So far so good. We have 1 more that should be replaced. We check them using an laser thermometer. Start the truck, and shoot the temp on the manifold where the manifold meets the head. The faulty injector would tend to be 10 to 30 degrees far. cooler. Sometimes that would not show up until we pulled the truck. After letting the exhaust manifold stabilize shoot the temps the same way.
Another place to check is where the injector pigtail enters the rocker box to the injector. I replaced all of them just to eliminate that from the equation.
Good Luck. Merry Christmas
t800 w/n14 celect derates power
Discussion in 'Trucks [ Eighteen Wheelers ]' started by montanafarmer, Feb 1, 2010.
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