engine knock
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Senior User
Joined: Jan 2004
Posts: 341
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From: Tennessee
engine knock
I have a rebuilt 351w engine and noticed a slight knock. the power steering pump is actually louder than the knock. coulf the valves need adjusting since it is a new engine??? either the valves need adjusting or the lifters are hitting the covers. covers are aluminum and off a 302. any ideas??
Elder User
Joined: Oct 2005
Posts: 677
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Yes valves might need to be adjusted. Probably want to ask on the 302 forum for more info on that....
Here's how you tell if you have a knock.... pull spark plug wires and replace with the engine running.... wear gloves that are good insulators so you dont get zapped.... and go around the distributor cap. If the sound disapears after you pull one of the wires..... you have a knock and need to re-rebuild the engine!
Here's how you tell if you have a knock.... pull spark plug wires and replace with the engine running.... wear gloves that are good insulators so you dont get zapped.... and go around the distributor cap. If the sound disapears after you pull one of the wires..... you have a knock and need to re-rebuild the engine!
Cargo Master
Joined: Sep 2005
Posts: 2,954
Likes: 64
need more info, a knock could be as simple as bad timing or bad gas also.
when do you have the knock? how low a pitch is it? is it a thumping knock or a tinny knock? IS it there at idle, acceleration or deceleration?
when do you have the knock? how low a pitch is it? is it a thumping knock or a tinny knock? IS it there at idle, acceleration or deceleration?
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