Hi, I have a 1750 Alfa Romeo nord engine in my Roadster. The idle is really rough and appears to be only running on cylinders 1 and 2. Seems ok once I open the throttle a fair bit.
I have pulled the plug leads on these cylinders while running and it makes no difference to the idle. There is a good spark when I put a spare plug in the lead.
I have also tried blocking each inlet with my hand, no difference.
I have tried spraying starter fluid in also, no difference.
Adjusting the mixture screws does nothing.
Plugs on all four cylinders will eventually foul with soot and rear wheel behind exhaust outlet will get a bit sooty after a run.
The carbs are 40 DCOE 32.
Carbs are a still bit of Black Magic to me so any suggestions welcome.
I have pulled the plug leads on these cylinders while running and it makes no difference to the idle. There is a good spark when I put a spare plug in the lead.
I have also tried blocking each inlet with my hand, no difference.
I have tried spraying starter fluid in also, no difference.
Adjusting the mixture screws does nothing.
Plugs on all four cylinders will eventually foul with soot and rear wheel behind exhaust outlet will get a bit sooty after a run.
The carbs are 40 DCOE 32.
Carbs are a still bit of Black Magic to me so any suggestions welcome.
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