misfiring on driver side cylinders

[Hobert]

 

[DRLexpress]

View attachment 449089

Thanks for posting this. Don't need it now but downloaded and saved for future use.

 

[irarb01]

hey yall quick update grounds seem ok only thing i have found is my short term fuel bank is through the roof looking at it with a scan tool it’s around 80/90

 

[justirv]

so one thing i noticed is if i let the car warm up it will stop missing if it’s cold it will miss slightly at idle and will miss heavy under load. once its a little bit warm it will run fine under load.

Intake manifold gasket shrinkage could be the problem. When the engine warms, expansion helps "re-seal" it... possibly getting un-metered air when cold.

 

[irarb01]

Intake manifold gasket shrinkage could be the problem. When the engine warms, expansion helps "re-seal" it... possibly getting un-metered air when cold.

i tightened my intake found one loose still didn’t change noticed black
soot on my tail pipe and w sulfur smell from my exhaust some times i’m wondering if my cat failed when my previous motor blew the head gasket

 

[justirv]

i tightened my intake found one loose still didn’t change noticed black
soot on my tail pipe and w sulfur smell from my exhaust some times i’m wondering if my cat failed when my previous motor blew the head gasket

Not so much bolt tightening, but actual gasket shrinkage. Smoke check (when stone cold) or use your choice of (safe) aerosol spray to see if your idle speed changes when you spray the area with engine running.

 

[KerryBoehm]

On my 07 there is a common ground for the coils on each side. Mine corroded bad and lost all spark on the passenger bank. Really have to hunt for it but it's a round eyelet on the side of the block.