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2.3L ('83-'97) 2.3 l developed knocking and misfire


ccaissie

5+ Year Member

Joined
Aug 10, 2016
Messages
29
Points
601
Vehicle Year
1993
Transmission
Manual
Noticed lack of power and engine roughness, and then a knocking that I first thought was related to a body part/muffler rattle. Worsened, and I managed to nurse it home. Definitely an engine noise....

Coolant and oil ok, knocks louder with greater throttle, definite misfire on a cylinder, seems smoother at high rpms and light throttle.....

Can't tell yet if it's top end or bottom. What can go in these engines? Just turned 178k, uses no significant oil. Was getting 27mpg.

First check? Pull the easy side plugs? Look for oil or damage? Idle and see which cylinder doesn't heat? Do they have overhead problems? I had a Pinto that had a high rattle knock from the overhead...this isn't that noise.
 

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