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Way O/T Cummins L10 GRRRRRRRRRR

B

Bob Bancroft

Well-known Member
Location
Aurora NY
I put maybe 7000 miles a year on this truck/engine. Did a bunch of work on it when I first got it, including new injectors. Just stuck a third one today. The pattern seems to be if I let it reach wide open(approx. 2400 RPM) going down hill with no throttle applied, is when it sticks one.
I buy fuel from a local Ag center who treats the fuel supply for their own use. For a time I added additive also, but still stuck an injector, so quit.
I don't know what to do, unless I go to adding vegetable oil all the time?!
 
We have one at work in a '94 truck with only 34000 miles that was acting up. The fuel injection shop sold me a gallon of stuff made by Stanadyne. It made a big improvement,the truck would hardly run before, skipping and smoking. I filled the fuel filter up with the additive and double dosed the tank and it cleared up quickly. HTH Jf
 
Hi
Try what Johnski said. My friend has a Duramax powered truck that started running like c@#p 2 weeks after buying it.
He was not pleased thinking he needed $4000 of injectors. He did a similar thing and it cleaned out runs fine and don"t need injectors right now. He doses the fuel every tank full now too as a preventative.
Regards Robert
 
Not real familiar with the L10, so don't know what red line is. Drove M11 & N14.
If all you did was stick an injector consider yourself lucky. Letting it run out on a downhill is the surest way to swallow a valve or more. Personally never ran a Cummins over 1900.
Didn't do it myself, but I have seen engines that swallowed valves. Trust me, it isn't pretty.
Sounds like something Lance the welder would have done in his early days when he tried to wreck as much equipment as he could.
Willie
 
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