after 5 years... trying to start

1300 driver. Will start but fails to want to idle/run. Revs nice and cleanly but just will not idle. Was fine when put into storage!

Likely cause? Have refilled tank with fresh petrol and added some Redex to help clear carbon deposits out of carb. Fuel def getting to carb. Cleaned plugs, replaced condensor and reset points - still no joy  

Any help guys?

cheers

It's either;

* a blocked idle jet (so the fuel comes through on throttle but not on the idle circuit).

* badly setup carburettor

or (my bet is)

* no positive feed getting to the carburettors fuel cut-off valve

Hello dubbydrummer,

Have you tried re-setting the idle speed using the throttle-stop screw and the idle mixture using the idle-bypass screw and idle-mixture screw (I assume it's a Solex Pierburg Carburettor) ?

Andy

Steve_Matthews said

or (my bet is)

* no positive feed getting to the carburettors fuel cut-off valve

Steve - mine too now you come to mention it  

Andy

cheers for the info lads - have checked listed stuff. Fuel cut-off valve getting  nearly 12V with ignition on, carb (solex) set-up as when previously running well. Just don't wanna start and run.

Driving me mad!!

anyone got a GT motor up for grabs     Gotta be easier…

dubbydrummer said

anyone got a GT motor up for grabs     Gotta be easier…

If you'd asked me two months ago…

Think there is one on clubpolo at the moment.

dubbydrummer said

have checked listed stuff. Fuel cut-off valve getting  nearly 12V with ignition on, carb (solex) set-up as when previously running well.

dubbydrummer,

OK so you're getting 12V at the cut-off solenoid - but is it 'clicking' in and out (test by pulling the connection off whilst the ignition is on) - it should then 'click' as it shuts. No 'click' = not open = no fuel at idle.

I understand that the settings were OK when it went into storage, but try tweaking the throttle stop screw clockwise a half-turn and see if that makes a difference.

If still no luck then take the idle mixture screw out and have a look/clean and then re-adjust.

Andy

cheers - have tried what you recommended and all funtioning as it should - this is causing me great pain in the neck!

seems crazy    

So you can drive it, but as soon as you let the engine try to idle with no throttle and not on the overrun it stalls? Worth checking your points gap and condition, these are tempremental things and the wrong gap caused my 1.1 to do the same thing although only after hot starts.

Cheers