4given
CB750 New member
Yes I have read on this forum
Yes I have googled other forums as well
Yes I have found similar topics
Ok
I have a 75 cb750 motor(told it belonged to John Soliday)
Dyna electric ignition, Accel coils/wires, Nkg plugs, 7A carbs,
So what's going on is
#3 doesn't always fire and never at idle
I've gone through my carbs even put on a freshly rebuilt loaner set, I am getting fuel
With no change
Have swapped plugs and wires,
Even re wired coils so as to fire 1/4 off 2/3 and vise versa, I am getting spark
No change
Compression is 155-165 across all 4
At idle #3 only warms up if i go ride it it well sometimes fire in 2nd gear rpms aournd 6k rpm
And ALMOST always in 3rd & 4th gear 5-6k rpm
I'd say carbs but even after cleaning mine it didn't help so I put on a set my friend just rebuilt with no luck either
I adjusted valve .002/.003 had some noise so buddy that I got it from said it's got a preformance cam and to set it .003/.004
I did no change
Driving me nuts
If any buddy thanks the can help I'll even give you my cell# so we can talk
Thanks fellas
Yes I have googled other forums as well
Yes I have found similar topics
Ok
I have a 75 cb750 motor(told it belonged to John Soliday)
Dyna electric ignition, Accel coils/wires, Nkg plugs, 7A carbs,
So what's going on is
#3 doesn't always fire and never at idle
I've gone through my carbs even put on a freshly rebuilt loaner set, I am getting fuel
With no change
Have swapped plugs and wires,
Even re wired coils so as to fire 1/4 off 2/3 and vise versa, I am getting spark
No change
Compression is 155-165 across all 4
At idle #3 only warms up if i go ride it it well sometimes fire in 2nd gear rpms aournd 6k rpm
And ALMOST always in 3rd & 4th gear 5-6k rpm
I'd say carbs but even after cleaning mine it didn't help so I put on a set my friend just rebuilt with no luck either
I adjusted valve .002/.003 had some noise so buddy that I got it from said it's got a preformance cam and to set it .003/.004
I did no change
Driving me nuts
If any buddy thanks the can help I'll even give you my cell# so we can talk
Thanks fellas