Hi folks, long time, no visit from me.

A friend has an 01 no turbo impreza with a p0301 code. The engine has about 20k on it since complete rebuild and until yesterday has been perfect. I know it's a cylinder 1 misfire, just trying to give him some advice for fixing it as he is to far away. 

The car runs fine at freeway speeds but when you slow down to a stop it almost dies. He swapped plug wires and plugs, but no change. Compression is 150 on #1.

Any ideas would be great, and by the way, hes not very mechanical and hes nowhere near somewhere to take it to get checked.

 

Thanks

Dp

First things that I would try:

- Switch #1 spark-plug with adjacent. Still get the same code?

- Switch #1 spark-plug wire with adjacent. Still get the same code?

Do these sequentially, not both at the same time. Otherwise you can't tell which one made a change.

Have him look in FSM here: http://jdmfsm.info/Auto/Japan/Subaru/

Look under DTC code 301 and follow procedures.

 O.

Switched plugs and wires, still the same. Put in new coil pack and all good.