1980 CB750
I have two cold cylinders, 2&4. 2 plug is dry and looks like it’s not getting spark, looks completely unused. 4 is wet but not firing. Looks like the PO wired the coils directly to the battery through a relay. Not sure thats stock but seems odd.
1. Carbs have been cleaned and have fuel both in bowls and the intakes. The two center seem to have a little bit less fuel in the intakes
2. Checked vacuum with carb sync and all carbs are close to 5-10lbs
3. Valves have been set and are in spec
4. Timing has been checks, no chain slip
5. Spark units units have been checked by swapping them around
6. Pod filters but have been upjetted 10 higher for primary and secondary. Needle shimmed up
7. Compression is good in all 4
8. Spark looks good across all 4, even swapped out the 2&4 coil
Any direction? Looks like a may have 2 issues spark and fuel?
I have two cold cylinders, 2&4. 2 plug is dry and looks like it’s not getting spark, looks completely unused. 4 is wet but not firing. Looks like the PO wired the coils directly to the battery through a relay. Not sure thats stock but seems odd.
1. Carbs have been cleaned and have fuel both in bowls and the intakes. The two center seem to have a little bit less fuel in the intakes
2. Checked vacuum with carb sync and all carbs are close to 5-10lbs
3. Valves have been set and are in spec
4. Timing has been checks, no chain slip
5. Spark units units have been checked by swapping them around
6. Pod filters but have been upjetted 10 higher for primary and secondary. Needle shimmed up
7. Compression is good in all 4
8. Spark looks good across all 4, even swapped out the 2&4 coil
Any direction? Looks like a may have 2 issues spark and fuel?
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