I’m a 20+ year fb owner and I am currently stumped.

I just acquired a 1980 that quit running one day on the previous owner. Got a good deal

1: verified compression, 3 good pulses from each rotor
2: has fuel, pump works
3: tried priming it, suspecting it was a fuel issue
4: discovered “no spark”
5: battery connections sucked, redid them, no success
6: verified power going to the coils
7: verified all 3 fusible links ok and engine fuse ok
8: swapper igniter connectors to test for a bad igniter
9:swapped coil wires to test for a bad coil
10: verified timing with a static setting
11: cap and rotor look good

all my spare parts (dizzy, igniters, etc are all FB)

Many May recognize me for my supercharged gslse

Im really stumped with this



​​​​​​​any other suggestions please

 

I had a similar issue on my 85 and it ended up being a chewed wire for the ground to the coils. I found it near the ecu. I repaired the wire and I once again had spark. Have you gone through and checked the ground connections? I can always look in my 1980 FSM wiring diagram after work and send you some pictures of the circuitof you'd like.

 

1) no mention of new plugs. After a winters storage, my 80 SA would not start in spring. Replaced pretty much everything electric, but plugs - which "looked" fine. No go. New plugs: Boom.
2) condition of battery CABLES? If original, or unknown age, these can create all sorts of grief. If you do not know their history, replace...

Stu A
80GS
AZ