11-29-2011, 02:09 PM
chuzie Wrote:Are you running KOEO and KOER codes?
Is this an exhaust or intake backfire?
Timing or vac would be my first stop after a KOER test.
Don't know enough about the efi to tell you KOEO or KOER - i'll have to figure that one out
![Confused Confused](https://cb4x4.com/images/smilies/confused.png)
Both intake and exhaust backfiring.
'74 Grocery Getter, '73 Project Buggy, '77 Parts Rig
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