Knocks When I accelerate

[YoungEazy]

Yesterday my car cut off and after I crank it back up it had a knock in the motor when I accelerate. Anybody know what that could be? My pops thinks I need a new engine. Also, I been have long term problem with it jerking or like its missing when I drive. I just change out my valve cover gasket, spark plug wires and spark plug, and fuel filter.

[bigbird]

1. what engine and millage?

2. codes?

3. does the knocking match the revs or is it a constant rythm?

[JohnGD]

My first guess would be fuel starvation related? How's your fuel pump? May also want to try a bottle of Chevron Techron Fuel Sytem Cleaner (stronger than the fuel injector cleaner).

Then you also might want to check EGR operation. It needs to be working to help reduce combustion temperature. But check the fuel related issues (lean driveability issues) first.

Originally Posted by YoungEazy

Yesterday my car cut off and after I crank it back up it had a knock in the motor when I accelerate. Anybody know what that could be? My pops thinks I need a new engine. Also, I been have long term problem with it jerking or like its missing when I drive. I just change out my valve cover gasket, spark plug wires and spark plug, and fuel filter.

[YoungEazy]

1. 2.2 4cy with 285,000 miles

2. havent check yet

3. it matches the revs

[PortugalFocus]

Originally Posted by YoungEazy

1. 2.2 4cy with 285,000 miles

2. havent check yet

3. it matches the revs

I can't be 100% sure, but when the "knock" matches the revs it sounds like catastrophic failure.

Either rebuild it if you have the knowledge and tools, have someone else rebuild it or get a replacement motor.

[YoungEazy]

yea.......I was afraid of that do you know of any good sites to get engines from

[PortugalFocus]

www.car-part.com

Here you will find a list of local yards with engines in stock. Most offer a decent warranty.

Good Luck!

[CharmCityES]

sounds like the motor has probably given up the ghost...
you got almost 300k out of it which is respectible to say the least