tickover probs

[KEV 5 GT]

hey fellas I seem to be having probs with my tickover the car runs fine but every now and again the tickover drops and it wants to cut out and sometimes does anyone have any ideas as to what the cause is ?

[stu21t]

Try cleaning the idle jet .
Big round brass screw on the drivers side of the carb.
Take it out and give it a clean, I sprayed carb cleaner on mine. Don't lose the O ring.

[KEV 5 GT]

ive gave it a carb clean and a blow through mate with air would this cause intermittent idel as and when it wants to ?

[Trevhib]

If it's a little bit of crap that's getting caught up intermittently, yes.

Maybe have a look at your mixture screw and seal?

[KEV 5 GT]

what am I looking for with the mixture screw ? leaks it seems like the o ring is ok and quite a tight fit

[Trevhib]

Sounds like it's ok then.

[Trevhib]

I remember folk on here cleaning out idle jets and the problem not going away until they'd done it 3-4 times over.

Not saying that's the case here but it's worth keeping in mind as you search about for the cause.

I'd do a search on idle problems.

[Trevhib]

https://www.rtoc.org/boards/showthread.php?t=30230

[KEV 5 GT]

thanks trev I shall give it a read

[Leloby]

I've had loads of similar problems and it's always down to the idle jet with me. If the jet is clean, it's clean. It's more down to the seal. The oring you see on eBay is too thick and it never screws in the same way twice. In fact, 2 original carbs I've removed have had square section orings and not round. I'd recommend getting a slightly smaller oring from the assorted oring box you get in a £1 shop. Stretch it over the step on the jet holder and screw in hard. If the jet is clean and you do this then you can eliminate it from the equation.

[KEV 5 GT]

changed idel jet from another carb and I think ive sorted it now touch wood

[Xabi1973]

New poster! (less than 10 posts)

Hi, I've just had the same problem. Overhauled my carb and found the idle mixture screw had snapped off at the end. Replaced it and all gaskets/seals. Started car and set-up idle mixture and tick over, it was running like a dream. 2 weeks later I was coming up to a roundabout and dipped the clutch and the engine just cut out. Engine started ok but would not idle. It was also a little lumpy in the 1000-1500 rpm range. Took out the idle jet and cleaned even though it didn't look dirty and put back in. Running like a dream again!

[Trevhib]