Question about 2002 Jeep Grand Cherokee

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Motor ticks a occasionally when started - 2002 Jeep Grand Cherokee

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Most likely a sticking lifter. Try changing the engine oil and adding either lucas additive or marvel oil with the regular oil. Most times it will clear up.
Don't expect it to disappear in one minute though, it took time to get that way. Had one very noisy engine that took using amsoil 0w40 oil and lucas for a year before it totally went away, but it did, and ran another 200K before I got rid of it!!
good luck

Posted on Oct 08, 2009

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2001 Dodge Stratus R/T 3.0L V6. Motor ticks on top end while running. Every couple minutes the ticking goes away and then comes back. Timing belt is original, vehicle has 145,000 miles


A ticking noise at the top of the engine suggest either sticking/worn valve lifters or wear on camshaft lobes.

An oil change won't cure any mechanical wear, but it certainly won't do any harm either..

You can also try adding an additive to the oil. There are additives for 'quietening valve train noise'. The alternative is to remove the camshaft and lifters for inspection/replacement as necessary.

With 145, 000 miles on the clock your engine has done well - but no engine doesn't wear or suffer from the occasional fault. Maintenance such as frequent oil changes negates many problems, but wear and faults do develop.

You have the original rubberised camshaft/timing belt on a 2001 car with 145,000 on the clock? You're living on borrowed time. If that belt snaps your car is history. Scrap value. Change it...

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