Austin Hanischuk
Member
First time poster but I need some help.
2012 6.2L N/A with 122,000km.
I’ve had the truck for nearly 2 years now and up until 6-8 months ago it was a dream come true. As of lately though I’ve been chasing a cylinder 8 misfire (P0308) and misfire at startup (P0316), and on top of that I’ve had overheating issues to the point where the gauge will max out and I have to sit for a few minutes to let it cool off.
Replaced in the last 6 months:
All 16 spark plugs with NGK Iridium
Yellow top battery
Rad cap
Thermostat
And other miscellaneous parts that have nothing to do with spark/cooling.
I’ve tried swapping injectors, coils, and spark plug wires from 8 to 6 and the problem is always in cylinder 8.
Yesterday I checked the DS bank for compression and had
#2-196psi
#4-196psi
#6-184psi
#8-188psi
I know it fluctuates a little but figured 10psi wasn’t enough to cause a misfire.
I’ll add that the P0308 only comes on after the engine has been sitting for more than 8 hours, and I’ve never had it come on during the day, only after I finish my evening shift at 11pm.
ANY suggestions will be strongly considered so please throw anything at me as this has been a 6 month battle and I’m starting to lose faith lol
2012 6.2L N/A with 122,000km.
I’ve had the truck for nearly 2 years now and up until 6-8 months ago it was a dream come true. As of lately though I’ve been chasing a cylinder 8 misfire (P0308) and misfire at startup (P0316), and on top of that I’ve had overheating issues to the point where the gauge will max out and I have to sit for a few minutes to let it cool off.
Replaced in the last 6 months:
All 16 spark plugs with NGK Iridium
Yellow top battery
Rad cap
Thermostat
And other miscellaneous parts that have nothing to do with spark/cooling.
I’ve tried swapping injectors, coils, and spark plug wires from 8 to 6 and the problem is always in cylinder 8.
Yesterday I checked the DS bank for compression and had
#2-196psi
#4-196psi
#6-184psi
#8-188psi
I know it fluctuates a little but figured 10psi wasn’t enough to cause a misfire.
I’ll add that the P0308 only comes on after the engine has been sitting for more than 8 hours, and I’ve never had it come on during the day, only after I finish my evening shift at 11pm.
ANY suggestions will be strongly considered so please throw anything at me as this has been a 6 month battle and I’m starting to lose faith lol