Although I haven't utilized my Carbtune yet, I would orient the cylinder sychronizer hose connections L to R order 4,2,1,3.
That's my personal preference.
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Although I haven't utilized my Carbtune yet, I would orient the cylinder sychronizer hose connections L to R order 4,2,1,3.
Check the red wires under the ignition cover. They may have been chafed through their insulation by contact with the spinning Dyna rotor while the engine is running. Not actually touching here. The camera angle makes it look like it is, though.yawjansen wrote: ↑Wed May 19, 2021 1:53 pm Quick update.
Fuel pump is good. I swapped out the whole carb rack for another rebuilt 771A rack. Same problem. 2 and 4 seem not to be providing power. I rode it up and down the driveway a couple passes, no more than 2nd gear. While riding, I blew the new fuse to the Dyna, so there's that...
Guess I'll pull the plugs in 2 and 4 and triple check the gap is good.
What did you discover blew the new fuse to the Dyna?gltriker wrote: ↑Wed May 19, 2021 3:22 pmCheck the red wires under the ignition cover. They may have been chafed through their insulation by contact with the spinning Dyna rotor while the engine is running. Not actually touching here. The camera angle makes it look like it is, though.yawjansen wrote: ↑Wed May 19, 2021 1:53 pm Quick update.
Fuel pump is good. I swapped out the whole carb rack for another rebuilt 771A rack. Same problem. 2 and 4 seem not to be providing power. I rode it up and down the driveway a couple passes, no more than 2nd gear. While riding, I blew the new fuse to the Dyna, so there's that...
Guess I'll pull the plugs in 2 and 4 and triple check the gap is good.
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Yes, a dual outlet ignition coil can fail on one leg, and the other leg will still provide spark. I accidently overheated 2 Dyna ignition coils on my trike with a brief gasoline fire in the stock air filter housing that directed hot combustion gases out the snorkel onto both Dyna ignition coils. Even though there was no external indication they had been exposed to unusually high temperatures, one of them almost immediately failed on the lowest installed position outlet.gltriker wrote: ↑Wed May 19, 2021 4:52 pm Yawjansen!
I remembered you had mentioned a worry about burning the coils out in your first post. Dyna coils?
snipped from your post#5
"Only real concern here is the extended amount of time I had them operating/hot while trying to set points, this was prior to me just installing the Dayna."
Have you actually checked for spark potential at the #2 and 4 cylinders lately? Yes? No?
also snipped from your post#49
"I swapped out the whole carb rack for another rebuilt 771A rack. Same problem. 2 and 4 seem not to be providing power."
Which spout orientation on either Dyna coil leads to the #2 cylinder , and the #4 cylinder?
let's call them Top or Bottom spark plug wire outlet spout orientation on the typically mounted Dyna coils.
A photo of my trike's Dyna coils installed positions and their spark plug wires' routing paths. see my post #52.
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