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Old 11-01-2000, 08:41 PM
CJ CJ is offline
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Join Date: Jun 2000
Location: Earth
Posts: 1,318
I have posted this situation several times, but I can not get an answer. I find it hard to believe that I am the only one that has ever had this problem.
Here goes:
My 1991 300D 2.5 has a loud nailing sound only at idle. It has new injectors, timing set electronically, the head was off to measure piston clearance/the rods are not bent & lots of other minor things checked.
When I first start the car in the morning, it is very quiet (quiet for a diesel anyway). Once I hit the gas and then let up so that the car idles again, that is when the nailing starts. The nailing is loud only at idle. While I am driving, it is pretty quiet. The only thing that the four big local MBZ mechanics can tell me is the following:
1. It is definately fuel related.
2. It is nothing to be concerned about or an indicator of a larger problem.
3. Deal with it, the car is fine.
I find it hard to believe that after $1,000 of work NOBODY can seem to figure this out and I am the only person on this board that has ever encountered this.
Any input would be greatly appreciated.
Thanks again for ALL of your help!!!!
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