I keep getting a misfire on cylinder 4 and I put in new plugs and wires and I'm still getting a misfire under load typically going uphill. Next I'll try the coil. My main question is how do I know which cylinder is # 4 in case I need to do an injector?

My buddies Impreza 97 had a misfire when under load, the coil was bad.

For some reason I can't remember which one it is, it's a rear cylinder (closer to the seats) and whichever plug is further back. i'm pretty sure its passenger side

#4 is left-side, rear. 

 

Most likely on of the following:

Injector

Coil pack

Timing tensioner is on that side

Tight valves - but I think 96 is still HLAs so that would not be possible

If you have a 2.2 (since it's not an OB),, the last choice is a burnt exhaust valve,

 

O.

Edited August 8, 20169 yr by ocei77