Check the timing.
The rpms should go up for a few seconds then back down. Tranny should be in neutral when you check the ignition timing.drugal said:With the "Advance" dial set to 10 degrees on the light, the timing reads 11-12 degrees. When I connect Te1 and E1 on the diagnostic plug, the RPMs go up for a few seconds and then down again (should they stay up there? I don't know), and the timing then reads 14 degrees while the RPMs are up.