Question about 1999 Jeep Grand Cherokee

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I have a 1999 Jeep Grand Cherokee Limited that is making a rattling/ticking noise under the hood and I cannot figure out what it is! We did an oil change and added Rislone, it quieted it some but not completely so we did another oil change using synthetic blend oil and added Sea Foam and Lucas Oil Stabilizer and no change. It makes the noise upon starting it but stops after you hit second gear. Any ideas what this could be? It's not getting louder, not smoking, not burning oil or transmission fluid, oil pressure looks good sitting just above 40, doesn't get hot. 4.7 L V8 engine. Any help would be appreciated, thanks!!

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How many miles on it,sounds like lifter noise which is normal for high mileage jeeps,but if you have over 140k it is not a good idea to run synthetic oils as they are thinner than conv oil and it might start to consume oil.

Posted on Sep 27, 2009

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