Non starting Griff working again!

[Peter66]

For reference to other users. I had a problem that my Griff 4.3 didn't start. It cranked, but apparently did not get a spark/ignition. I first bought a new ignition amp. No change. I started to suspect and fear the immobilizer. I have the old Gemini and key fob system. They are two separate systems with a terribly complicated wiring. Then I read in the recent Chim PH article about a connector close to the ignition coil. Mine doesn't have this, but looking more around I discovered another connector at the back between the bulkhead and dipstick. I must have accidentally pulled it off when I checked the oil level! The connector goes back into the loom of the AFM.
Problem solved I hoped, but alas it still didn't start. Then I changed back to my old ignition amp, because the replacement was found via cross reference. It runs!
I hope this helps others. Be careful with the ignition amp. Although they look the same, apparently there are internal differences! And watch out disconnecting connectors when checking your oil!

Peter

[Peter66]

An update. Tried to drive it today and it would only run when I pressed the pedal and kept it around 2000 RPM. Otherwise it would stall. Restarting afterwards was difficult.
It turned out that I reversed the ignition amp leads to the distributor. I thought it was an AC-signal, but apparently it does matter how you connect the magnetic sensor to the amplifier! Now it runs sweet, better than before. Better throttle response as well. It used to run a bit rough/uneven. I suspect it was related to the earth of the amplifier. Strange that the amp and its wiring is so critical.

Peter