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#1
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Surging at high RPM
My 1991 350SDL started surging at high RPM. By that I mean it starts surging around 3250 rpm and has a hard time building rpms beyond that point. It acts like it hits a rev limiter. It will but slowly and it doesn't like it.
It is not very often that I rev it that high but I had to merge on the highway yesterday and I noticed it. I'm thinking that I'm running out of fuel. I changed both of the fuel filters today and I didn't see much improvement if any. Lift pump going?? Suggestions?? |
#2
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If you believe it is a fuel supply issue you have a Fuel Tank Screen, a Fuel Pressure Relief/Overflow Valve and of course the Fuel Supply/Lift Pump.
There is 2 threads on rebuilding the type fo Fuel Supply/Lift Pump that you have. My notes are kind of messed up but I think this might be one of the threads. 606 Fuel/Lift Pump Rebuild OM606 Fuel Pump Rebuild - PeachParts Mercedes ShopForum Some of the Fuel Pressure Relief/Overflow are said to have a plastic piece inside of them that warps or fractures. There should be a ball bearing, the plastic piece and a spring inside. Is the turbo boost pressure reaching the ALDA and is it the correct boost pressure?
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84 300D, 82 Volvo 244Gl Diesel |
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