My Engine won't stop !

[robinofsherwood]

When I turn the engine off it turns over a couple of times gives a couple of death rattles and dies. Is this something I should worry about or is it part of the charm of owning a 45 year old woody ?

[chrisryder]

tickover could be set too fast.

or it's running too rich.

or it's running too hot (most likely in this weather if it's only just started happening).

[bmcecosse]

It's 'running on' caused by something glowing red inside one or more combustion chambers and thus able to sustain Ignition after you have switched off the sparks. As above -could be retarded ignition/rich mixture/general hot engine. You can try putting your foot down on the acc pedal/changing brand of petrol/advancing the timing till it 'pinks' and then retard v slightly/weaken the mixture (check plug colour - are they brown/black?)/fit a new set of plugs (Champion N9Y are good for a standard engine, or try N7Y)/fit a lower value thermostat....... or just live with it......

[simmitc]

Just for healthy debate, I've seen the problem with timing too advanced and mixture too weak. Best thing is a general service and set everything to correct parameters. Check the coolant!

[MarkyB]

Mixture too weak will do it, burns too hot.

[bmcecosse]

But needs rich mix to leave carbon in the chamber to glow red.... I did suggest a plug colour check....

[robinofsherwood]

Thanks guys for the advice. Much to ponder and lots of tinkering when I get home at the weekend.[frame][/frame]