Se5 spluttering with heat soak

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Se5 spluttering with heat soak

Post by danterzza » Fri May 18, 2018 6:34 am

My scim runs perfect from cold and even when red hot will run nice but as soon as you turn off and leave it five mins when you restart it it runs lumpy and missfires for a while.

I have stripped the carb, fitted new points and plugs and re set the timing as it was a little out. Is still on a mechanical fuel pump as well.

Any ideas?

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peter freeman
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Se5 spluttering with heat soak

Post by peter freeman » Fri May 18, 2018 7:19 am

Fuel vaporisation.

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Se5 spluttering with heat soak

Post by danterzza » Fri May 18, 2018 10:55 am


What's the best way to cure it?

Insulate the fuel line?

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Se5 spluttering with heat soak

Post by Rev Light » Fri May 18, 2018 11:19 am

Never stop...... :shock:

I had this at the end of last year. Stopped at a garage to refuel after a fast run. Took me 15 or 20 mins to get it restarted.

I am looking forward to resolving this during the summer.

I might try and open the bonnet before I refuel and leave it that way until I have paid. Pretend to check my oil, etc.

Make sure you have the thick spacer between the fuel pump and the engine block - mine is currently missing.

Make sure the choke is fully off when the car is warmed up.


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Se5 spluttering with heat soak

Post by scimjim » Fri May 18, 2018 1:23 pm

Find out what’s changed, they don’t do this as standard.

Check fuel pipe routing, any insulation plates, float height, timing, coolant temp but most importantly don’t forget that most fuel related problems turn out to be electrical :D

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Se5 spluttering with heat soak

Post by Gillsfan » Fri May 18, 2018 1:52 pm

Follow the advice above first. but just incase, a few years ago I had a problem where Rat Rod would start and run fine from cold but wouldn't start from hot. Which turned out to be a knackered coil.


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Se5 spluttering with heat soak

Post by Terry H » Fri May 18, 2018 2:02 pm

I had a similar thing with my Scimitar when trying to start when hot, turned out to be where a PO had put a suppressor on the coil wiring.
Regards Terry H

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