Misfire possibly caused by timing chain issue

[Rusty Rivets]

Would a lose or stretched timing chain cause a misfire in cylinder 1? I have a 2002 Jeep tj sport. The engine makes a slight rattle noise.

 

[Jerry Bransford]

Exactly what brand and model spark plugs are installed?

 

[pagrey]

Check the chain, it takes two minutes, then you can move on to finding the problem. Put wrench on the crankshaft and turn it back and forth, if the chain is worn enough you will hear and feel the slack before it starts moving the cam. Mine was toast and I did not get a code. It did make noise and caused a rough idle.

 

[Rusty Rivets]

Exactly what brand and model spark plugs are installed?

@Jerry Bransford spark plugs are champion copper plus

 

[Rusty Rivets]

Check the chain, it takes two minutes, then you can move on to finding the problem. Put wrench on the crankshaft and turn it back and forth, if the chain is worn enough you will hear and feel the slack before it starts moving the cam. Mine was toast and I did not get a code. It did make noise and caused a rough idle.

Thank you kindly, I’m going to do this.