Lifter question

toroos · **Posted:** Sat Oct 27, 2012 1:58 pm

I just bought the vehicle recently and brought it by green diesel engineering and keith said it sounded like bad rockers. He was right so I changed out all the rockers and lifters. Most of the rollers didnt even roll anymore on the rockers, some had needles missing from the bearings. It makes me wonder if when your doing the timing belt change if you shouldnt just change the rockers at the same time.
Well got the engine back together and heard what sounded like rocker noise so tore it all back apart again. The only thing I notice is that some of the lifters dont have anymore spring in them. These are brand new and only been run for an hour or so. Is this normal?

Thanks
Bill

warp2diesel · **Posted:** Sun Oct 28, 2012 12:25 am

You passageways to the lifters in the cylinder head can be clogged with soot, sludge, or the oil pressure is low (unlikely). Since you just bought it, chances are it was run with the EGR at full force and putting lots of soot into the engine oil that ended up in the passageways clogging them up and starving the lifters. Chances are the oil jets that cool the pistons are clogged up too. I would not be surprised if the oil orifice in the turbo center section is full of soot as well.
The US/Canada version of the CRD gets a much higher dose of EGR. GDE greatly lowers the dose of EGR, ORM & SEGR turn it totally off. I would bet the CRD you just bought had none of these options.
The soot is why I installed a Centrifuge and shut off the EGR so my engine will last. When I change my oil and clean out the Centrifuge, it is packed with soot, even with using the Amsoil oil filter.
You might want to look into an engine flush and talk it over with a Tech who manages a fleet of Diesels that have to run with the full dose of EGR to keep the EPA off their backs. Ask how they clean out the soot that is in the passageways using the flush, or you might be dropping the pan to clean out the oil jets and pulling the head to have it tanked in an aluminum compatible compound.
Then take a preventative measure to get rid of the High Dose EGR, so you don't get another EGR OD.
Good Luck

kjjet · **Posted:** Mon Oct 29, 2012 11:45 am

1. Did you have new oil before the first start up?
2. What Oil type?
3. How long did you run it?
4. When you say the lifters have no spring? How are you testing? after they pump up with Oil they should be harder to compress.
5. Was the engine timed correctly? Cam's pined, Flywheel pinned, Crankshaft timing mark verrified?

These engines sound bad at start up after the rocker/ lifter's are changed. If you verrified everything is correct and new oil. (i perfer 0w-40) then i would start and run up to 2000 RPM for 5 min's to build up oil PSI and smooth things out.

I had this problem. Ended up having a fuel filter leak. SO... check your fuel filter head. Pull the plug on the drivers side of the fuel head and look for fuel wile pumping up the filter. Any fuel at all spells problem. Air would be sucking into the fuel system.

Good luck!

toroos · **Posted:** Mon Oct 29, 2012 12:53 pm

I found some info online that said after they have been run they will be extremly hard to press and that was the case. I put the motor all back together and everything was good for about 3 min. The fuel injector blew an o-ring. I should of replaced those when I had them out. Thanks for the great input everybody.

papaindigo · **Posted:** Mon Oct 29, 2012 1:17 pm

Yep, anytime you pull injectors you need to use new "O" rings and crush washers. Don't forget to check and make sure the little steel "shoe" that the injector hold down presses on is still in the aluminum head. There has been at least one case of a shoe going missing, they are apparently in the head pretty tight but not impossible to dislodge, which causes the hold down to gouge the head and eventually the injector to leak at the base.

Lifter question

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