Re: Losing power at acceleration making noise from timing...
Hi just replaced water pump, timing chain and plugs. 1st initial test proved that timing was off. 2nd attempt re-aligned chain and now dashboard is displaying check engine and VOC. I have a 2004 Nissan Maxima
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The growling noise that you are hearing when you accelerate is likely caused by a problem with your timing chain. The timing chain is a critical component in the engine that helps to synchronize the movement of the pistons and the camshafts. If the timing chain is loose or damaged, it can cause a growling or rattling noise, especially when the engine is under load. This can be a serious issue because a faulty timing chain can cause the engine to misfire or even fail. If you are hearing this noise, it is recommended that you have your vehicle checked by a mechanic as soon as possible to diagnose and repair the problem.
no engine noise is normal if it wasn't there on purchase
could be tappet or hydraulic adjuster worn out
run the fault codes for the other problem
Kia Sportage runs a timing chain so the noise and engine performance problems could be from a worn / slack timing chain
pinging ( detonation) is from lean mixture ( white smoke)( heated oxygen sensor/s in the exhaust manifold /s), incorrect ignition timing
The lack of power could be a valve timing problem from the advance mechanism being faulty
best to have the fault codes read to determine the problem area first
Well the code is a random miss rather than a specific cylinder.
The noise could be a cam or timing chain problem which would also cause running problems.
Check your oil. If oil is too low, it makes a rattling noise in acceleration. Also, be careful that it isn't your timing chain. The timing chain, once it's starting to fail, will make that noise as well.
Any abnormal noise coming from the engine needs to be investigated dealt with before it causes you extra problems and expense. If you have a worn and sloppy timing chain it will effect your valve timing and ignition timing and can possibly skip a tooth and then run really roughly so that could be your problem. But you say you have two cylinders not firing right, with the timing chain they would all be bad so it could be something else. With the engine idling take off one plug lead at a time and note the change in engine sound. If no change this is a the bad cylinder. If the two bad cylinders are adjacent you may have a blown head gasket (look for a milky residue in the oil, foaming in the radiator and overheating). Once you have tried this report back with your results and you can get more help.
I hate to tell you this but it soundes like it's in the differential. Take your bolts off your pumpkin and have some one rock the truck. I bet you have a lot of play and what you are hearing is the ring gear in there . It probabley has to much play in the two gears
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