7 replies to this topic

[westpark15]

Model:neon
Year:1991
Description of problem (please be as in depth as possible):
well the problem only seems to happen every now and then.
but when i switch the enigne offt the car trys to start back up again
does anyone know what could be causing this probelm ?
and how to solve it
thanks nigel


Any non-standard parts that might be involved with the problem?

[Ouster]

That'll be called "run-on" - the fuel is being ignited without the spark. Is the car running rich? Have you checked the timing?

[satvinder]

as said this is run on. Normaly timings out. May aswell check valve clearence. My mini does this because is runnig way to rich due to a incorrect needle.

[westpark15]

yes the car is running abit rich at the moment
and also i havent checked the timing
whats the best way to solve it ??

[Ouster]

Get a strobe light on the case, adjust as per Haynes.

[Marky Tizz]

My car runs on sometimes if you've been thrashing it about for a little while, even though the mix/timing are spot on. Had it tuned several times by different people and it still does it.
we call it a "cold" and use it as a sign that she's enjoyed herself

[alicetheauto]

Can also be where carbon has built up in the cylinder head, which glows red hot where the engine has been running. When you turn off the engine, all you are doing is stopping the spark, and as the carbon is glowing it still ignites the petrol from the mechanical fuel pump (pumping still as the engine is still turning over). Sometimes it can just even be carbon on the plugs, so take them out and give them a clean if they are dirty?

[RG_16]

this happened to my parents' mini still not too sure why
probably running too rich but we just ignored it then about a month later
the car broke down and wouldnt start again.
When we took the engine apart the valve seats had been burnt due to
overfueling meaning we had to replace the whole cylinder head