2015 yukon misfire cyl 8 P0300

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

yukon2015

TYF Newbie
Joined
Nov 14, 2022
Posts
8
Reaction score
2
my yukon denali 6.2 2015
misfire light now
In the live daters, cyl 8 is a misfire
And recently, cyl 4
P0300
P0206
P1248

I try
New plug
New Plug wire
New 8 fuel injector
New lifter with spring
Valve cover open and valve movement is good
maybe no damage to wiring

Please help....
 
OP
OP
Y

yukon2015

TYF Newbie
Joined
Nov 14, 2022
Posts
8
Reaction score
2
I ended up replacing the camshafts and lifters.
The camshafts and lifters were shaved. This is what caused the misfire
and Deleted AFM DOD with HP tuner.
Rough idle and strange noises are gone.
I feel like it's off to a bad start though.
I think it needs to be tuned with some kind of HP tuner.
 

Forum statistics

Threads
128,795
Posts
1,805,569
Members
91,779
Latest member
wilburMN
Top