Coolant & Misfire

Hi

The fact :
- 136400 miles on a '03 Venture.
- Run on 5 cylinder for 1 minute after crank. After run fine on 6 cylinders.
- Engine coolant is leaking but I dont know where : there's no smell like a defective IMG.

I get a noticable "P0304: Misfire cylinder #4" with CES blinking under accelerating.
The cylinder #4 is the front middle one : the easiest to check and access.
BTW i change plugs, wire and coil and still the same symptoms.

Any idea : fuel injector ?

Bst rgds

ps : All apologies for my poor "french touch" english :smooch:

Your english is fine.

How did #4 plug look in comparison to the others, was it very clean looking, if so it is burning coolant........

Did you check your post on the "Pontiac" thread?

Did you check your post on the "Pontiac" thread?

Ok thanks
Follow up on Montana forum.