Engine flush was amazingly clean. I expected it to be darker. Fresh oil and I have 40 psi at idle, which is right in the middle of the gauge. Lifter is still noisy, so I'll need to keep a watch on that. Two years ago, it would quiet up after driving for 5 minutes. Hopefully it'll do the same this time. Plus, I'll go back to full synthetic after I run with this oil for a bit. That might help. I used dino oil for this round since I was flushing it.
-Rob
I had an old IHC 345 with noisy lifters. I'd toss in a qt of ATF 100 miles before an oil change.
Lifter tick went away after a couple cycles of that.
Is your PCV system functioning ? You really seem to have an unusually bad case of sludge for one of those engines.
Cousin_Eddie (Forum Supporter) said:Is your PCV system functioning ? You really seem to have an unusually bad case of sludge for one of those engines.
I think the sludge is because it's running rich. I don't have any codes, but I think my coolant temp sensor is bad because when I fire it up on cold startup, it idles like normal instead of idling high and then dropping down. I have a new sensor on my bench, but haven't gotten to it yet as I've been chasing other things and just been busy until now. It's next on my list as a "to do" and will probably do the water pump at the same time as it's weeping. Again, just trying to organize the top items first.
-Rob
Those year 4.3s don't have adjustable rocker arms, so if the lifter is weak/failing, it would make noise. Mine (1999) has rocker tapping at cold start, but goes away with oil pressure and warming up. The offending rocker should be a bit looser than the rest.
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