knocking sound coming from motor.
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Thread Starter
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From: San Antonio Tx
knocking sound coming from motor. I started the car yesterday after it sitting for a month or so. it started up pretty good but i did notice the idle was high right at around 1,5k. So i reset the tps and it came down and as soon as i restarted it i heard a knocking sound coming from the passenger side. When rev the motor a bit where the throttle cable is it seems to get louder n faster. It kinda sounds like a woodpecker hitting a tree if that makes any sense. But i have never heard this sound before so im not too sure where to start. Im thinking i should start checking the pushrods but i want to ask before i start taking things apart.
Thanks
Jay
Thanks
Jay
A sound clip would help generously.
But to prematurely say what it might be, the main two things it sounds like are either rod knock or a valve contacting a piston. Both will increase with rpm.
A rod knock usually sounds deeper, with valve contact sounding more like a click or snapping your fingers.
Does the car have an aftermarket cam/springs/pushrods? A bent pushed or broken valvespring could be the culprit, even if stock. thats the easiest/cheapest out of the two to check and fix.
Just pull that valve cover and check the valvesprings first, then the pushrods.
But to prematurely say what it might be, the main two things it sounds like are either rod knock or a valve contacting a piston. Both will increase with rpm.
A rod knock usually sounds deeper, with valve contact sounding more like a click or snapping your fingers.
Does the car have an aftermarket cam/springs/pushrods? A bent pushed or broken valvespring could be the culprit, even if stock. thats the easiest/cheapest out of the two to check and fix.
Just pull that valve cover and check the valvesprings first, then the pushrods.
Thread Starter
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From: San Antonio Tx
It's more of a knock. When I get home I'll get a clip on my iPhone but I don't know if it will come up here. The car has heads n cam that were installed 2 years ago. It's pretty loud but only comes from the passenger header side.
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Thread Starter
TECH Fanatic
iTrader: (2)
Joined: Oct 2002
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From: San Antonio Tx
well i started it when i got home from work & now the noise is gone. Like i said before i havent started that thing in almost close to 2 months. but ill keep an eye on it and see how it acts if i get to drive it this week.
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