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My 98 Jeep Grand Cherokee has a clicking noise from the engine. 5.9 liter or 360 cu in motor. I drive it slow and don't beat it. Is this easy to fix? It has 150,000 miles on it.
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My first guess would be a failing valve lifter. They can become weak with age and not able to hold oil pressure. Especially in an engine with that many miles on the clock. If the noise is constant you may be able to find out which cylinder by running a compression test. maybe.
the first grand cherokee laredo was in 1992 . it was all jeep sports back then, the blocks are all the same .you will need to use some of the sensors from the old motor, the distributor and oil sending unit and temp sensor. will be no problem. if I can put a ford ranger motor in a mercury sable your swap is easier
Here is what I would do first.
Get a can of Seafoam Motor Tune. You should be able to find it at any good parts store. Wal-mart may also have it in their auto section. Add 1/2 can to the engine oil. Start the engine and let it run. If it is a stuck hydraulic lifter I have yet to have this not fix it. Once the noise is gone change the oil. Add the other half of the can to the oil and drive it unti the next oil change.
If the noise does not go away I would need to know what engine you have. You should be able to replace lifter without pulling the enigine engine.
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318 ci They don't have the power you are expecting and they are succeptible to coolant leaks. The 4.0 ltr is the way to go for any Jeep. The 4.0 ltr is powerful and very rarely breaks down. I used to work on them for a living and would never purchase a Jeep with a V8
I would not believe any thing some parts store loser told you. Theres not a V8 built that doesnt have hydraulic lifters, unless its some fancy racin engine. It has hydraulic lifters, but unless you dont change your oil every 5k miles and/or use some cheap oil, there should be no problems. You should have a real mechanic look at it, and verify that you have good oil pressure. If it does, I would change the oil and use some MOBIL 1 and drive it, the oil will clean the lifters somewhat. If the eng has low oil pressure, that will need to be addressed.
First, if the noise is from the upper part of the engine and is more of a tapping than a knock, likely you have a problem in the valvetrain, most often a bad lifter or worn rocker arm. If the noise is low, deep inside, the noise is from a bearing. This is generally accompanied by lower than normal oil pressure. Regardless of the underlying cause, correcting the cause will not stop the knock. To do that correctly, the engine needs to be removed and all crankshaft bearings and the crankshaft itself need to be replaced (crank can sometimes be "undercut" and thicker bearing shells can be used depending upon the amount of wear.) If caught very early, sometimes only one bearing can be replaced in-car, but in 99% of all cases I have ever seen, most will fail again, sometimes more severely if done this way.
If you have a connecting rod problem, likely it is not the rod itself that has failed, rather, the crankshaft bearing on that rod or the wristpin. Usually though when either has failed, the knocking is an all the time thing, varying with engine rpm. A good tech can usually tell the difference between the two just by listening. A beraing failure is generally also accompanied by a drop in engine oil pressure as well. not so for a wristpin. An intermittent noise (tapping) can also indicate a valve lifter problem... though a lifter can also make noise during a low oil pressure situation. Lifter noise is heard from the top of the engine, both other noises are from underneath. I would first have a different shop give you a second opinion. If it turns out to be a rod bearing, generally this damages the crankshaft and also sends bearing material throughout the entire engine. To properly repair would require complete teardown and rebuild, or replacement of engine. This does not hold true for lifter or wristpin problems, unless severe, though either can be expensive, even if you do the job yourself.. How long is your powertrain warranty? Definitely get a second opinion before doing anything else!
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
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