Question about 1997 Nissan Pickup

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Timing chain i had my timing chain replaced but when i accelerate it makes a chattering noise and has no power up hills ..when i take my foot off the gas it stops..is the timing chain not on right or whats the deal??

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It could be that the timing chain is off a tooth, but you can try loosening the distributor and turning it a little and then tighten it back up again and see if it makes a difference. when you turn the distributor your engine speed should increase and you know that you are turning it the right wy. this is known as advancing your timing. if you notice no difference in the engine speed as you turn or adjust the dist. then you may need to adjust your throttle control sensor.

Posted on Oct 09, 2008

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Place a 3 foot 1/4 inch brass rod against the flap at the opening of your ear and push until it closes. Place the other end of the rod against various engine components and listen. The noisy problem will conduct the noise up the rod to your ear and you can hear quite precisely where the problem is. Much safer than laying your ear all over a running engine.

You can also loosen the fan belt and run the engine without alternator or water pump (briefly) to see how that affects the problem. Chatter on start makes me think of starter and Bendix gear problems. Sounds like a 2 person diagnostic team to me; one to start the car and one to listen and probe.

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Good day Sir, I read the posting about 1990 Ford F250 351 5.8 bucking, chattering and no power my truck as same issue. New plugs plug wires distributor fuel pump fuel filter oil pump water pump hear gasket...


If the noise is all the time you were on the right track with the oil pump. I would expect to find the valves and lifters dry for oil.
But if it only makes the noise when you are accelerating, then yes the timing would be suspect.
Did you test the fuel pump pressure after you replaced the pump and filter ?

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Hi,

Timing chains cannot be tightened as such.

However, if you are experiencing chain "chatter", it is possible to reduce this noise by either:

- changing to correct viscosity engine oil
- replacing the chain "tensioner"
- Last resort: removing plastic chain guide inside timing cover (Note: only do this if it does not adversely affect the chain operation.

cheers,


"If this solution has resolved your problem, please be kind enough to leave a testimonial"


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