Question about 2009 Dodge Caliber

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Top end engine noise-valve train?

Do I have a timing chain or a belt? sounds like valve train noise in top half of motor engine has 70k on it

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You may be coming up on the maintenance interval for a new Belt, but I would imagine that this vehicle has VVT, variable valve timing, and that you may need an adjustment on that as well.
Valve noise is most likely what you are hearing.

Posted on Apr 08, 2015

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Posted on Jan 02, 2017

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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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Tons of possibilities. If it has enough mileage (or a problem) and a timing chain (4.0L has a chain, 4.7L has a belt, not sure on the 5.7L), you can get an odd rattle from a timing chain tensioner that has gone south (revving creates more centrifugal force, pushing the chain outward, and you hear either link noise due to slackness or the chain slapping against something). That, or a much more serious valve train issue, should be the worst possibilities, but I would start by getting one of those 'stethoscope' tools and having someone rev the engine up and down while you (very carefully!) place it on different parts until you isolate the source of the noise. I wouldn't let that go for very long, though. If it is in the valve train or timing chain, it can get more expensive in a hurry. Hope not, for your sake.

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Sounds like timing chain. There's a service bulletin on this problem... Go to http://www.hmaservice.com/ and register (Vehicle by VIN).. then you'll have access to manuals, service bulletins, wiring diagrams, etc. Please remembe to RATE my response.... Thanks.

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If it is a ticking noise, it will more than likely be a valve train issue.
If a knocking noise, piston or crankshaft related problem.

Attached is a web site that you can listen to a piston slap which is a known issue for your 4.3.
Listen to the noise and see if it sounds similar to your problem. A piston slap will generally sound as though it is coming from the central area of the engine.
Listen to the recording and let me know.
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