missfire on acceleration

[incastag]

my friend's stag has started to missfire on acceleration. this happens more when the engine has warmed up. we have changed plugs, leads, dist cap, coil and we have also checked fuel supply, including filter, fuel pipes. the carbs have new jets, any ideas?

Thanks Graham

[John Wright]

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Sounds like fuel starvation. Check the fuel filter andfuel pump. Is it worse with a nearlyempty tank (pump has to lift fuel higher)?

[stustag]

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Hi

Sound like dirty or failing needle valves AAU4547 or if electronic ignition check the chopper is not crack/damaged?

Stuart

[incastag]

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thanks john,will fill tank and see if there is any improvement ,will also investigate fuel pump.we have already changed filter

[incastag]

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have checked the chopper that looks ok , will look into new needle valves we suspect the lumination and are going to swop the distributor for one with points just to eliminate that, many thanks will let you know how we get on.