Just finished rebuild of 7M gte and runs fine, but when trying to set timing, shorting the two pins in the test port has no effect. Timing at idle shows 13 BTDC at max adjustment, so I pulled the CPS and moved one tooth but would then could not adjust enough to run at all. Moved back and runs well, but...13 degrees? This is a JDM engine bored 30 thou, metal head gasket, no EGR, correct ECU and harness. Ideas?
timing doesn't change when shorting pins at test port
- Thread starter rustfarmer
- Start date
I'm having the same issue with my cps. In one position can only get to 0 deg when the adj slot maxs out on bolt. Pull cps and rotate one tooth and now min timing I can get is 12 deg?? Is there any way for the drive gear to not be installed on the cps indexed correctly?
Can the factory exhaust cam gear be installed in different orientations to the cam? Or would the cam have to be off a tooth on the timing belt?
There is 3 spots but the dowel should be in the middle one. If it is off a tad tho it will be off a couple degrees. Retime the belt and them time the cps.
Check engine light does not flash when jumping. Note: new timing belt and I'm sure it is timed correctly.
^ This and what hvyman said. I'll say it (again) too: never attempt timing without first verifying 1) the MIL is flashing and 2) it's not flashing code 51.