Engine or transmission knock / rattle upon acceleration under load. Only occurs when driving, not in neutral / park . Once noise starts and vehicle starts moving, I can stop or start rattle/ knock noise by pressing brake pedal. Occurs mainly under load @ approx 2500-3500 rpm.
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Not sure on model but to me sounds like its a dodgey valve lifter when the seals start to go they cannot hold the oil and when there under pressure they basically empty them selves hence when you turn the engine off and restart you get a rattle sound untill the valve fills again as long as the cars running ok leave it untill you have to replace them unless there easy to do sone are sone are a pain
if the knocking is occurring while vehicle is in motion it can be a driveshaft cv joint bad..if it occurs while not moving but in gear, it could be the exhaust rattleing under the car..may also be the front end suspension bushings worn..
Yes, it COULD be a timing chain rattling, but again, your guess is probably better than mine at this point.
Without the ability to hear the noise it is impossible to say. Noises can be very difficult to locate when you are standing right in front of the vehicle. It is completely unachievable to perform this task remotely.
Are you sure it is coming from the engine and not the transmission? Or maybe even the exhaust? It is not likely for a timing chain noise to go away as a reult of putting the transmission in gear.
As for the misfire, when does it occur? is it at idle? Is it when you are accelerating (putting the engine under a load? Does it only misfire at high speeds? Much more info needed here.
Get the engine mounts checked. A bad mount may allow part of the engine to lie on a body or frame part, allowing engine vibrations to become very loud. Torquing of the engine (under load) can cause the same type problems.
I had the same problem! I crawled underneath the car and discovered that a heat shield on the exhaust header pipe was corroded and rattling against the exhaust pipe. (Before the muffler) I removed the portion and clamps and solved the problem. Give it a try.
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