Hi all
Setting up a new engine in a just about completed HZ.
Engine is running an Accel dizzy with a magnetic pickup driving a Crane Hi-6 ignition module.
Set the initial timing by disconnecting the vacuum advance from dizzy. Intial timing set at 8 degrees.
Engine runs and accelerates perfectly.
Once initial was set, then went and connected vacuum advance to dizzy. Vacuum comes from the "Timed Spark Vacuum source" on a 650 vac sec Holley.
I also tried full manifold vacuum.
Once the vacuum is connected, engine idles just as before, but as soon as the throttle is touched engine almost stalls and starts backfiring. Is not happy at all.
Anyone got any ideas of where to start looking?
It has been mentioned to me that the "phasing" of the dizzy may be wrong. I don't know what this means. Can anyone shed light on that?
Cheers
Roy
Setting up a new engine in a just about completed HZ.
Engine is running an Accel dizzy with a magnetic pickup driving a Crane Hi-6 ignition module.
Set the initial timing by disconnecting the vacuum advance from dizzy. Intial timing set at 8 degrees.
Engine runs and accelerates perfectly.
Once initial was set, then went and connected vacuum advance to dizzy. Vacuum comes from the "Timed Spark Vacuum source" on a 650 vac sec Holley.
I also tried full manifold vacuum.
Once the vacuum is connected, engine idles just as before, but as soon as the throttle is touched engine almost stalls and starts backfiring. Is not happy at all.
Anyone got any ideas of where to start looking?
It has been mentioned to me that the "phasing" of the dizzy may be wrong. I don't know what this means. Can anyone shed light on that?
Cheers
Roy