Question about 2002 Jeep Grand Cherokee

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Type of oil that is reccomended

I have a loud knocking coming from the engine. I was told it might be the oil i am using, just wondering what type of oil i should be using?

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You can try louc oil trement and 4 qurt of 10/40 oil . witch brand is up to you . haveloleen is good

Posted on Jun 24, 2009

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2001 Lincoln Town Car Sig. .. loud knocking noise and the noise speeds up when reved or driven? what do you think is the problem? I had an oil change using 10/40 but the noise is still the same? can it be...


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First when was the engine tuned up last ? is it using oil ? How many miles are on the engine. The knock you are hearing is it up top or louder under the car. Need more information. you could spin the oil filter off and cut it apart and see whats on the paper part of the filter. if there are metal flakes then you have something failing inside the engine.

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Hi i got a fordka 2005 model. it overheats really quickly but am still able to use the heating as it is still hot. theres a knocking noise coming from the engine. oil is also fine


Hi
it sounds like the thermostat is broken, do not keep diving it as it will destroy the engine, is the knocking more like a ticking sound? or a loud bang type knock?

take off the oil cap and check for any yellow gunk, if you see that then the head gasket has gone, sometimes you can still drive them for a few weeks before you see this but do take a look.

hope this helps
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Trying to figure out where the knocking is coming from, on engine


It all depends how loud the knock is. A tapping valve can be caused by low oil level, or dirty oil. Topping up or changing oil will solve the problem. A really loud valve tapping is abnormal. Cars sometimes make what you call a spark knock when accelerating hard. Extremely loud knock coming from deep within the engine is a bad sign, which means the engine has failed. Further examination would reveal metallic residue on the dipstick.

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