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Hey Friendly People, I'm after suggestions,
My 100 4 has had heaps done over the last year, Ive done about 5000mls since engine and carbie rebuild (carbies done by sumidel, so done properly), now it has plenty of power , idle is smooth, mixture is great nice light brown plug tips and grey exhaust.....BUT it will run rough at cruise and after a decelleration downhill seems to starve for fuel and dies. If i pull over and try to start it again away it goes after one turn no problem. Like i said power is great, accelerates beautifully so fuel supply and timing (electronic ignition) is ok , if the road is rising it will cruise under load very well.
I have tried blocking off the vac advance , made no difference to anything.
Increased idle speed to 1000 rpm , no difference.
Removed air cleaners, slight improvement but still roughish and stalled after decel.
The timing at the moment is set at tdc i advanced it a tad coz it should be 5-8 deg adv , awfull very rough but again power was good and idle was fine.
No one I have spoken to has any idea what the problem could be and I am at a loss, what else can I try?
My 100 4 has had heaps done over the last year, Ive done about 5000mls since engine and carbie rebuild (carbies done by sumidel, so done properly), now it has plenty of power , idle is smooth, mixture is great nice light brown plug tips and grey exhaust.....BUT it will run rough at cruise and after a decelleration downhill seems to starve for fuel and dies. If i pull over and try to start it again away it goes after one turn no problem. Like i said power is great, accelerates beautifully so fuel supply and timing (electronic ignition) is ok , if the road is rising it will cruise under load very well.
I have tried blocking off the vac advance , made no difference to anything.
Increased idle speed to 1000 rpm , no difference.
Removed air cleaners, slight improvement but still roughish and stalled after decel.
The timing at the moment is set at tdc i advanced it a tad coz it should be 5-8 deg adv , awfull very rough but again power was good and idle was fine.
No one I have spoken to has any idea what the problem could be and I am at a loss, what else can I try?
