Question about Cars & Trucks
Truck started running rough loud valve noises.Have 90,000 on rebuilt engine. Good oil pressure not over heating. Pulled driver side valve cover #4 valve is extremely lose, 3/8 or more play.Can i replace the cam and lifters.
Check pushrods , a bent one could do this . if not that probably bad cam . remove and replace cam and lifters it can probably be done without removing engine.
Posted on Dec 05, 2012
Why can't you adjust the rocker arms?
Posted on Dec 05, 2012
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Posted on Jan 02, 2017
SOURCE: loses oil pressure
Have u verified the oil pressure with a mechanical guage? this may just be a sending unit, if the engine had no pressure the lifters would be rattling like crazy at idle.
Posted on Dec 28, 2008
one hydrolic lifter taps after I just spend 2,000 dollers to rebuild the heads they put all new parts on everything. I whant to know if the single hydrolice lifters can be replaced without pulling the head back off. could it be replaced by just pulling the valve cover 2002 dogde entrepid
Posted on Oct 04, 2009
put half a litre of diesel in the oil and three second squirt of fariy liquid ,no cheap stuff allowed ,run for about a week and drain oil,then with the new oil in ,using the cheapest diesel oil you can get repeat again with diesel and fairy ,by this time they should have quitened down a lot,then change oil again using a diesel oil for a turbo truck change filter as well and then change oil every 6000 miles and a filter every third oil change
Posted on Jan 12, 2010
As far as I know all hydraulic lifters can go bad, collapes or stick. And yours are definately hydraulic lifters, rollered yes, which will make them more durable, but they can go bad. The machine shop should have down a leak-down test on the lifters. That is the only way to determine if the lifters are good. I would check that you have proper oil pressure, I'm sure you do. I bought a "rebuilt head" for a Saturn DOHC engine, and the machine shop never did a leak down test on the lifters, and I had the samething happening.
Posted on Mar 17, 2010
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