right having just changed the plugs and air filter it's now struggling to run, misfires, backfires, farts and pops, when i open the throttle it cuts out.

what the fcuk have i done wrong here, the vac lines,fuel lines are on in the right places fuel tap is on i have checked that i haven't got a plug lead round the wrong way all ok.

Seems to run better when the choke is on, i have made sure the filter box is sitting on the carbs ok and that the rubber rings are tight over the carb tops too.

Iain

If it ran fine before your maintenance then it's something you did. You'll have to go back in there and check your work.

Vac lines may still be wrong, very easy to put one on the wrong spot on the petcock.

Crossed plug wires? One boot not fully on a plug?

Errr pilot error, put the vac line on the petcock in the wrong place, duh. Why have 2 that look the same i will never know.


Thanks


Iain

The one is to allow the actual petcock to vent to atmosphere. ( the air in the diaphram, if you take the petcock apart you will understand and never put the hose there again.)