JHZR2
Staff member
My 1991 MB 300D 2.5 Turbo has a lifter tick. It’s coming from under there, not the injection pump or anywhere else. The engine runs smooth and perfect. Starts easy in the coldest conditions. Smooth and good for 35MPG+.
Engine is clean.
Injectors were recently rebalanced and pop pressure set, didn’t change the noise. Again, car runs beautifully. Only has 233k miles.
We did try to find play in any lifters by turning the engine and trying to press them. No luck.
So I’m going to pull the cam, and check/change the lifters. I imported some from the UK because none of the euro places in the USA can seem to source.
The FSM is pretty clear on how to remove the cam. Not a big deal I don’t think.
But I’ve never done it before. I think some of this may help @supton too…
- should I soak the lifters in motor oil before installation? Maybe even force it in?
- what do you make of this instruction:
Maybe it’s because I’m literate that I can’t really figure the photos. Not sure what’s the difference between a happy and sad sound. So I rev the engine a bit and then listen…. Ok? How do I discriminate?
- should I use some assembly lube on the cam, bearings on the cam, etc? Lubricate 105 grease? Permatex red assembly lube oil? Something else?
- what else do I need to know?
Thanks!
Engine is clean.
Injectors were recently rebalanced and pop pressure set, didn’t change the noise. Again, car runs beautifully. Only has 233k miles.
We did try to find play in any lifters by turning the engine and trying to press them. No luck.
So I’m going to pull the cam, and check/change the lifters. I imported some from the UK because none of the euro places in the USA can seem to source.
The FSM is pretty clear on how to remove the cam. Not a big deal I don’t think.
But I’ve never done it before. I think some of this may help @supton too…
- should I soak the lifters in motor oil before installation? Maybe even force it in?
- what do you make of this instruction:
Maybe it’s because I’m literate that I can’t really figure the photos. Not sure what’s the difference between a happy and sad sound. So I rev the engine a bit and then listen…. Ok? How do I discriminate?
- should I use some assembly lube on the cam, bearings on the cam, etc? Lubricate 105 grease? Permatex red assembly lube oil? Something else?
- what else do I need to know?
Thanks!
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