2002 cadillac diville misfiring 1 and 6
 

Help i have replaced the coils the plugs and boots and still a p0300 misfire code 1 and 6 is there and it will go away when i stomp the gas but come back at idle the car has 110k on it

RE: 2002 cadillac diville misfiring 1 and 6
 

What did the plugs look like on those cylinders?
Have you checked compression yet?

RE: 2002 cadillac diville misfiring 1 and 6
 

the caddy dealer said that it needed head gaskets the plugs were white

RE: 2002 cadillac diville misfiring 1 and 6
 

The only other thing i could think of would be an injector issue.
I would swap #2and#6 to see if the misfire moves.
But if a compression check turned up a head gasket problem, then thats that.