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Sooted plugs on R51
Sooted plugs on R51
I have a 1939 R51 with Bing 1/22/61-62's from the R51/2.
It keeps sooting both plugs up though after a very short while (minutes). I've checked the points gap (0.4mm) changed the coil, condenser and plugs. I've tried reducing the jet sizes but this hasn't helped.
The only things I haven't changed are the HT leads and the points. One plug sooting up could indicate a problem with a single carb but both makes me think is a spark issue?
If it makes a difference both carbs have the schutzschraube.
Any ideas?
Thanks
John
I have never owned anything
So that's just my .02
92 R100RT/69 R69S
2004 Aprilia Atlantic 500cc single cylinder Scooter
83 Honda V65 Magna, fastest production bike in1983
2015 Can Am Spider SE6 1,688 miles
2018 Moto Guzzi V711 Special
sooted up when hot
I've replaced coil, condenser and plugs. Next to check is points, rotor and leads - hopefully this weekend.
Regards,
John
I only lived in England for 5
92 R100RT/69 R69S
2004 Aprilia Atlantic 500cc single cylinder Scooter
83 Honda V65 Magna, fastest production bike in1983
2015 Can Am Spider SE6 1,688 miles
2018 Moto Guzzi V711 Special
Update
New plugs this weekend too, it idled but the engine was missing when on throttle and sooted the plugs up within minutes.
I dropped the needles a notch which seemed to make a difference and it idled a lot better. I ran out of time (British weather) and didn't get a chance to ride it out on the road. I'll double check resistance through the leads and cap this weekend to see if I have a rotor/cap/lead related issue.
Regards,
Update - Resolved
Regards
John