Help with code 36

[actionjack]

Cousins 06 Apex GT was serviced immediately before trip to Canada. After a few days riding code 36 popped up. While at Valinouet (no thanks to the dopes there who wouldn't let us pull in the garage) I took it apart and cleaned a very small smudge from the electric plug to the coil on #4 and that cleared it up for a couple days until he went wide open again for a few miles on a lake. He ran pretty much all day with intermittent spark in at least #4. Should we be looking for a wire issue, a coil issue, coil plug, spark plug? I assume that plug must be fouled.

Thanks in advance.

 

[TBay Sledhead]

Change plugs, swap coils with either 1 or 3. If it shows up there it,s the coil. If not wiring or ecu.

 

[actionjack]

Logical! Thanks

 

[apex4]

hi..isnt that code 36...not fault code 36.....fault code is for coils...code 36 diaogonstic is for injector #1 do you find out the problem