Twin dellortos struggling past 3500rpm
First up is engine spec.
1720cc
244 cam
accuspark blue coil ballast and vacuum distributor
accuspark plugs
twin 40 dellortos
choke 32
mains 140
emulsion 777.5
air corrector 110
thats all info I have at moment.
engine starts no problem, pulls nicely and and feels good up to and sitting at 3000rpm.
start pulling past it and I get hesitation and stuttering, having to back off to about 2000rpm to let it settle and then it will sit at 3000rpm again no problem. Try pulling past it and it will repeat.
facet pump with king filter pressure was at 3psi. Increased to 4 psi and no change.
any opinions on what it could be? Fuel starvation?
had a read about needle valves but don’t know what size should be right.
i will just add I did pull over on one occasion because fuel smell and fuel was dripping out trumpets
3 and 4. Turned everything off for a while and that hasn’t happened since. Maybe stuck needle valve?
thank you
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Re: Twin dellortos struggling past 3500rpm
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