saddletramp
New member
Hello all,
I have a 1984 R100 RT. It has the Seibenrock Power kit. I've been running into a few gremlins and looking for ideas and what to check.
The bike would not rev beyond 5000 rpm. In neutral, it would go past but stumbled from 4500 to 6200 then picked up again after. After noticing the bean can was in dire need of servicing, I decided to swap to the Alpha v4 ignition (Hall sensor and ignition module). After, the bike was revving nicely and I got the carbs sync'd. The next morning, went to take it for a ride, would not start. Stumbled and would only fire on left cylinder. Removed right plug, noted plug wet with fuel. Tested the ignition coil, showed open, replaced both coils. I have compression on both cylinders, within 3 psi of each other. Removed front cover, made sure timiing mark were correct. Reassemble, still does not fire on right cylinder. Removed cylinder head and inspected, nothing out of the ordinary present. Swapped carbs left to right to check if possibly a fueling issue. Would not fire on either cylinder. I have spark on both cylinders when the plugs are grounded outside the cylinders.
I disassembled the carburetors and removed all the jets and brass fittings, soaked overnight and then used wire files to make sure there was no varnish or clogs. I never quite trusted the plain spray type cleaners. I have fuel refilling the float bowls and the floats move freely. When I raise the floats, fuel stops. The diaphragms are new as well.
So to recap:
Carbs cleaned when engine was assembled (600 miles ago.)
New Plugs
New NGK Wires
New Alpha v4 Ignition system
New Bosch Ignition Coils
Timing set
Valve clearance set
Compression checked
I'm at a loss here as it seems like the spark is being snuffed somehow. Perhaps too much fuel? I tried to lean it out and still will not fire. I am leaning towards an issue with the carburetors themselves but, my experience with them is rather limited.
Thanks in advanced!
I have a 1984 R100 RT. It has the Seibenrock Power kit. I've been running into a few gremlins and looking for ideas and what to check.
The bike would not rev beyond 5000 rpm. In neutral, it would go past but stumbled from 4500 to 6200 then picked up again after. After noticing the bean can was in dire need of servicing, I decided to swap to the Alpha v4 ignition (Hall sensor and ignition module). After, the bike was revving nicely and I got the carbs sync'd. The next morning, went to take it for a ride, would not start. Stumbled and would only fire on left cylinder. Removed right plug, noted plug wet with fuel. Tested the ignition coil, showed open, replaced both coils. I have compression on both cylinders, within 3 psi of each other. Removed front cover, made sure timiing mark were correct. Reassemble, still does not fire on right cylinder. Removed cylinder head and inspected, nothing out of the ordinary present. Swapped carbs left to right to check if possibly a fueling issue. Would not fire on either cylinder. I have spark on both cylinders when the plugs are grounded outside the cylinders.
I disassembled the carburetors and removed all the jets and brass fittings, soaked overnight and then used wire files to make sure there was no varnish or clogs. I never quite trusted the plain spray type cleaners. I have fuel refilling the float bowls and the floats move freely. When I raise the floats, fuel stops. The diaphragms are new as well.
So to recap:
Carbs cleaned when engine was assembled (600 miles ago.)
New Plugs
New NGK Wires
New Alpha v4 Ignition system
New Bosch Ignition Coils
Timing set
Valve clearance set
Compression checked
I'm at a loss here as it seems like the spark is being snuffed somehow. Perhaps too much fuel? I tried to lean it out and still will not fire. I am leaning towards an issue with the carburetors themselves but, my experience with them is rather limited.
Thanks in advanced!