Hey all, got a question

I have a bone stock '06 2500 with 20k on the clock and have had the Jacobs exhaust brake dealer installed in April of this year. Truck has been doing great until recently. Always have been using Howes Diesel treat from the start, and Meaner cleaner at least once a month. I have already replaced the fuel filter twice, going to the same dealer all the time for oil and filters, just so they know I'm not using other parts, other than Mopar. Always use the 7 micron filters.

Anyway, just recently, I have noticed that when I start my truck when its dead cold, engine idles fine, no abnormal noise. Only after it warms up to full operating temperature do I notice a somewhat loud tick, and the engine doens't idle quite so smooth. Kinda like a real slight chugging noise. Oil level has been staying the same, although, my coolant level has been dropping ever so slightly recently. Otherwise, no white smoke, even at startup, and no engine problems at driving speeds.

I took it to the dealer last week and they did the injector kill test, said number 4 was getting weak. Also said they replaced it, but I wonder.Unfortunately, the dealer was closed by the time I picked it up, so now, its still doing the same thing.

It sounds almost like valve noise, what's the possibly at this mileage of a loose rocker arm, burnt valve, spring or something, since I do have the exhaust brake?

Any suggestions would be greatly appreciated.

Thanks,

Chris

 

you could adjust the valve to eliminate that as a potential culprit... it's easy to do with the right tools and there is a DIY link for it at the top of the forum.

 

there's no reason at all to go to the dealer to have them only use Mopar products. Fleetguard is the filtration of choice and is a Cummins company. I think Mopar filters are also made by Fleetguard but, I don't believe they have the same low micron filtration. The 7 micron filter you mentioned should be a 5 micron. If the dealer is installing those you should get it elsewhere. The 7 micron isn't used anymore. You are allow to use any lubrication and filtering products you want.

It's possible like Steve said that your valves could use to be adjusted but, if you have already had to replace one injector... it's realy likely you have others with problems. Injector tick and valve clatter can be very similar in sound but, knowing which one is which takes a good ear.

 

and another thing to mention is that when I did my valves... oops, when I had Jr do my valves it quieted the motor down significantly. some of the valves were at the upper limit of the spec, I put them in the center of the spec and was real happy with them.

 

I've got 160K on my 02 with an exhaust brake that I use all the time and my valves are still all good, so I doubt with that low of mileage you would have one that is bad. Like what was said, it is really easy to check/adjust them, and even if you have no tools you can get everything you need fairly cheap.