115 SHO only running on 2 cylinders

[BarneyG]

My 2019 - 115 HP SHO is running on 2 of the 4 cylinders. I've had my injectors professionally cleaned. On reinstallation I noticed that the rough running and no power condition continued. To check the individual cylinders I unplugged each injector and found no change when I unplugged #1 and #4. When I unplugged #2 or #3 the engine stalls.

I switched out the coils packs from #1 and #2 and the condition persists as above. Seems like #1 & #4 are not being told to fire?

 

[boscoe]

Were the injectors cleaned trying to solve a problem?

Is your concern about injectors or ignition coils? I can not tell.

 

[BarneyG]

Thank you for your response.

Yes, I had the injectors cleaned since it seemed to be a fuel issue. Now, after checking each cylinder I've discovered that the #1 & #4 cylinders are not firing. I swapped out the coils and it made no difference.

 

[fitz73222]

Purchase service manual LIT-18616-04-02, best $100 you'll ever spend, very indepth troubleshooting guide

 

[BarneyG]

Thanks