Zephian
Newbie
Hello,
as the topic says I have a 97 k2500 suburban with the 454 7.4l.
Running great, just smogged it, then BOOM check engine light several hours after smog check.
Looked in the to check engine light with my handy OBDII bluetooth adapter and Torque Pro.
P1345.
I narrowed it down to the cam offset/retard. Had to purchase a different app to monitor these values (Dash Command + advanced GM PIDs)
I was at -16 degrees at +1k RPM. Rough idle, weak start.
Loosened the distributor hold down bolt, turned it counter clockwise as far as I could (Spark plug is against the intake plenum ) and only gained 2 degrees.
I am now at -14.
Is it possible my distributor jumped a tooth? Should I just pull the distributor, advance it one tooth and check again? Or is my distributor shot and needs replacement?
Thanks for any input.
as the topic says I have a 97 k2500 suburban with the 454 7.4l.
Running great, just smogged it, then BOOM check engine light several hours after smog check.
Looked in the to check engine light with my handy OBDII bluetooth adapter and Torque Pro.
P1345.
I narrowed it down to the cam offset/retard. Had to purchase a different app to monitor these values (Dash Command + advanced GM PIDs)
I was at -16 degrees at +1k RPM. Rough idle, weak start.
Loosened the distributor hold down bolt, turned it counter clockwise as far as I could (Spark plug is against the intake plenum ) and only gained 2 degrees.
I am now at -14.
Is it possible my distributor jumped a tooth? Should I just pull the distributor, advance it one tooth and check again? Or is my distributor shot and needs replacement?
Thanks for any input.