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Showing results for tags 'cold running'.
Hi All, Hope you're all well. So here is my problem, spitfire 1500 1976, when its warm, its great runs really well, but from cold its rough, won't accelerate properly etc. As it warms up it stays the same rough running until a few minutes after maximum temperature is reached ie the thermostat opens, then a few minutes after further running all is well. It starts OK on choke with small amount of accelerator pedal etc. The timing is 10 BTD, dwell is good (yep still on points but will replace later with a spark rite unit). The carbs are balanced and the mixture set as per book and colour tune checked (plugs a little black after a good run, not too much, I think this maybe old piston rings leaking a little oil, but no smoke out of the exhaust). Is it me just not remembering how things were in the past ??