Question about 2001 Jeep Cherokee
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Posted on Jan 02, 2017
sounds like the lifters losed prime! here is a little trick that ive learned add a half off quirt off transmission fluid to the oil to prime the lifter
Posted on Nov 30, 2008
SOURCE: 2002 Concorde valves tapping
How long has it been from oil change. Have you checked Oil pressure? If filter is old and dirty fluid needs to warm to be thin enough to get enough volume to valve train. If oil pump is getting weak it will not pump sufficient fluid to valves at low RPM. First change oil and filter. After that make sure pressure is in spec's.
Posted on Jan 26, 2009
Before adjusting the valves, 1. check the oil level 2. use an engine cleaner that you add to the oil (berryman's or equivalent) and run thru the engine for 30 minutes 3. change oil and filter 4 run and check for tappet noise. This may improve things without opening things up.
Posted on Jun 11, 2009
The cleaners such as rislone etc.....need to be left in and run in the engine for a few days to a few weeks. You can run two cans at once.
You can also run a thicker oil such as 15w40 to see if that helps.
If none of the above makes a difference you may have a blocked oil passage or a crack in a oil passage lowering oil pressure to the lifters.
If it is "lifters" and not just one lifter allowing to much clearance in the valve train you may indeed have a blockage or crack.
If it is just one it may be a mechanical lifter defect and it may need replacing.
The above assumes all oil changes were done on time with high quality oil.
The cheap cleaning method is 25% gas and 75% oil put into the crankcase and run that for 20 mins.
Posted on Oct 20, 2009
When you hear some tapping, that's why you need -valve adjustments. At 137,000miles you probably need more than that to continue your trouble-free drives.
Posted on Nov 12, 2009
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