Question about 1999 Jeep Grand Cherokee

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4.0 130000miles pinging, sounds like from the bottom end. no metal in filter. collapsed lifter maybe? no metal in filter has me puzzled.1999 cherokee,auto

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  • Jeep Master
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Check timing/timing chain.

Posted on Sep 24, 2009

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2001 Seat Leon S, 1595CC Petrol, 5DR, Manual, engine sounds like diesel engine. what possible problems?


change your oil now and once you take off the oil filter look for metal shavings if there are take it to a trusted mechanic asap

Dec 17, 2014 | Seat Cars & Trucks

1 Answer

I have a 97 chevy 5.7 vortec it knocks when cold but goes away when it warms up my truck is running lean which is causing a few other problems and ive done some research and im getting it could be bearings...


all of the problems you mentioned will be there when warm. bearing noise gets worse as the oil thins out and the oil pressure will be lower than normal. Collapsed lifter will indicate with a problem misfiring and will be there all the time. Piston slap will be more evident at lower than required idle rpms. Some knocks can be from loose valve seat inserts but then again that will show up as an occasional misfire and will progressively get worse. Check that the oil filter you are using has a non-return valve built into it to retain oil in the top end when stationary. The knock may be until oil pressure is built up. El cheapo filters mostly do not have the valve. check the viscosity of the oil you are using as you may have to go up a grade.
use a mechanics stethoscope to pinpoint where the noise is coming from. Some failing bearings (idler,water pump,alternator etc) will knock for a while until they warm up

Nov 14, 2014 | Cars & Trucks

1 Answer

Why does my motor have a pinging sound


You did not mention when this pinging occurs (all the time? idle? lugging under load?). If it is in fact in the engine, it is most likely a timing issue which can get complicated because it could be caused by a problem with the distributor, timing chain or chain tensioner, one or more faulty engine sensors, etc.

However, there are other causes of this noise. Most pinging noises at idle or low RPMs are not usually in the motor itself but rather from rotating parts that periodically touch something, and often happen when something comes loose or is bent, bearings get worn, or something made it into the engine compartment that shouldn't be there (a tool, a rock, etc.). Typical examples are worn out HVAC fan, cooling fan or AC compressor clutch bearings; a cooling fan blade touching metal or a loose shield; and so on. If this is the case, you should try to locate exactly where this noise is coming from - a stethoscope from an auto parts store may help.

Aug 02, 2014 | 1999 GMC Jimmy

1 Answer

Have a 1999 firebird, new oil change the oil pressure is fine but when its time for it again the oil pressure drops below 60psi and now when i start it, it makes a tapping sound then goes away, can i drive...


First unless some one put a high pressure oil pump in it, you shouldn't be getting 60lbs of pressure. You might want to replace the oil sending unit to see what your pressure really is. Listen to see where the tapping is coming from, top or bottom of the engine. If it,s the top then it's a lifter/s. this can be caused by wear or a collapsed lifter. Wear can be adjusted out. collapsed lifters are usually dirty. they can be cleaned while the engine is running, ask your mechanic. If the noise is coming from the bottom , then your bearings are wearing out. this is an engine over haul or time for a different engine. Oil breaks down and looses viscosity (thickness of the oil) this is why the pressure goes down. You can drive your car to get the oil change. I would suggest an oil treatment be added to your car if you have really high miles.

Feb 11, 2011 | 1999 Pontiac Firebird

1 Answer

2005 mercury grand marquis sounds like collapsed lifter or lifters passenger side front also knocking from sounds to be cat convertor


collapsed lifters are definately a possibility, what usually happens is the oil filter gets sucked in and restrics oil flow to the top end... change you filter, make sure the fluid it full, and see if that makes your vehicle sound any better.

Dec 08, 2010 | Mercury Grand Marquis Cars & Trucks

3 Answers

Engine ticking, The engine has a tick in it sounds like a lifter possibly. The car has 208000 miles on it.


SOUND LIKE WORN LIFTERS OR DIRT TRAPPED LIFTERS.YOU CAN TRY CHANGE ENGINE OIL AND FILTER.YOU CAN PUT A BOTTLE OF LIFTER QUIETNER.BLEND SOME IN CRANKCASE DONT OVERFILL.IT WILL CLEAN AND FREE UP LIFTERS.IF LIFTERS STILL NOISEY.YOU HAVE TO REPLACE CAMSHAFT + LIFTERS + BEARINGS DEPEND ON HOW BAD WORN.

Jun 02, 2010 | 2000 Chrysler Concorde

1 Answer

Metalic tapping sound coming from #6 cylinder, increases as rpm increases


possibly a collapsed valve lifter.. intake manifold must be removed to replace it... to confirm.. remove the valve cover and see if the rockers can be compressed by hand..if so probably the lifter

Jul 13, 2009 | 2003 Pontiac Aztek

1 Answer

2000 olds van 3.4l engine started ticking Top end? Started suddenly last weekend. 220 000 klicks. timing belt slipped a tooth???


sounds to me maybe a sticky lifter and not building up with oil pressure,try adding 2 quarts of clean diesel fuel to your oil and let idle for about 10-15 minutes,if the ticking stops then change the oil and filter,then it was the lifter not building up with oil pressure

May 08, 2009 | 1999 Chevrolet Lumina

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