Help with a diagnosis

"Sampsonite24-Earth's Least Likeliest Hero" (sampsonite24) 05/12/2018 at 09:58 • Filed to: None

0

7

Pictured:Not Mine. I don’t have an SS

Just wanted to get oppos input. The cobalt has devolped a misfire in cylinder 3. But it only happens at slow speeds and low revs. We have tried simple things like fuel injector cleaner but nothing’s worked so far. Also switching coil packs between cylinders still nets the same cylinder 3 misfire. So any ideaS?

RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars > Sampsonite24-Earth's Least Likeliest Hero 05/12/2018 at 10:02

1

If it’s the same issue on the same cylinder, could be the plug?

Khalbali > Sampsonite24-Earth's Least Likeliest Hero 05/12/2018 at 10:06

2

Ywah I always start by swapping the plug with one cylinder and the coil with a different one, so if cylinder 3 is missing then swap coil with 4 and plug with 2.

Ash78, voting early and often > Sampsonite24-Earth's Least Likeliest Hero 05/12/2018 at 10:11

4

Ditto swapping plugs. Or just changing them, since they’re cheap.

Full of the sound of the Gran Fury, signifying nothing. > Sampsonite24-Earth's Least Likeliest Hero 05/12/2018 at 10:18

1

Try swapping injectors. That’s how I pinpointed the problem on the Windscar.

Sampsonite24-Earth's Least Likeliest Hero > Ash78, voting early and often 05/12/2018 at 10:19

0

yeah i might have to pick a couple up

Dash-doorhandle-6 cyl none the richer > Sampsonite24-Earth's Least Likeliest Hero 05/12/2018 at 10:52

2

check all your grounds. especially from the head to rad support. spent 900 dollars hunting for this was a rotten ground cable, but required close inspection.

coqui70 > Sampsonite24-Earth's Least Likeliest Hero 05/12/2018 at 23:10

1

GM product this is normal.