Thread: S 2A 2.25 with Solex Carb won't run without choke

Originally Posted by rexhunt

I've got a 2A out on my parent's farm that I've slowly been trying to get up to snuff and using here and there on the farm when it's working. Currently the biggest problem I have with it is that it won't run without at least a tiny bit of choke. We've played with the mixture screw, put new seals through the carb, put a new throttle shaft in, checked the valves, has new points, coil, leads, plugs and it still won't idle without the choke. It doesn't need much but I'm thinking that particularly one it's up to temp that it shouldn't need any choke at all to be running smoothly.

I replaced the throttle shaft as the old one had a bit of wobble that I thought might be causing the problem. The new shaft didn't fix the wobble much so I'm thinking there might be air leaking in through there and causing it to run lean. To test this I was thinking maybe put some putty around the throttle shaft and if it runs better then we'll need to make up some bushings to fix the sloppy housing.

Am I going to be better off getting a zenith clone or something and an adapter, etc. or is it likely I've just missed setting something up correctly?

I was planning on checking the timing statically next time I'm out there. I'd done it before when it was at my place but just to be sure it hasn't changed. I can't use a timing light as idle is currently around 1500rpm according to the cheapo tach that's hooked up the the ignition coil.

Thanks for any help.
Rex

Hi Rex

You can still get rebuild kits for these.

Have a look here;

John Craddock LTD

and here..

Parts - Land Rover Workshop

Cheers Simon

Hmmm, didn't even think to look at the uk guys. I might get that overhaul kit lest one of the jets is screwed up.

Originally Posted by rexhunt

I've got a 2A out on my parent's farm that I've slowly been trying to get up to snuff and using here and there on the farm when it's working. Currently the biggest problem I have with it is that it won't run without at least a tiny bit of choke. We've played with the mixture screw, put new seals through the carb, put a new throttle shaft in, checked the valves, has new points, coil, leads, plugs and it still won't idle without the choke. It doesn't need much but I'm thinking that particularly one it's up to temp that it shouldn't need any choke at all to be running smoothly.

I replaced the throttle shaft as the old one had a bit of wobble that I thought might be causing the problem. The new shaft didn't fix the wobble much so I'm thinking there might be air leaking in through there and causing it to run lean. To test this I was thinking maybe put some putty around the throttle shaft and if it runs better then we'll need to make up some bushings to fix the sloppy housing.

Am I going to be better off getting a zenith clone or something and an adapter, etc. or is it likely I've just missed setting something up correctly?

I was planning on checking the timing statically next time I'm out there. I'd done it before when it was at my place but just to be sure it hasn't changed. I can't use a timing light as idle is currently around 1500rpm according to the cheapo tach that's hooked up the the ignition coil.

Thanks for any help.
Rex

You've never mentioned the idle adjusting screw. Why not?
.W.

Originally Posted by B.S.F.

You've never mentioned the idle adjusting screw. Why not?
.W.

You mean the screw that adjusts the position the the butterfly when the accelerator is released? I didn't think to mention it. With the choke pushed all the way in I can only keep it running by working the accelerator to keep the revs high, then it will stop anyway. Setting the hand throttle to try and replicate the action while being easier to adjust, restart and adjust again ended up with nearly full travel on the hand throttle and it still sopped after 30 seconds or so.

Thanks,
Rex

Kits are available in Australia. This is just one of the companies.

Land Rover Parts - CARBURETTOR REPAIR KIT (SOLEX) - L/ROVER S2+2A (Up to & including engine suffix H)

No connection, just a happy customer.
.W.

Check the sentiment bole in the fuel line for water or dirt or if some one has fitted a line filter replace it . I used to have trouble similar because the fuel tank is under the seat I would get water in the tank when I washed the vehicle . When it played up I would just blow back through the line filter & it would run fine until the next time the tank got low & sucked up more water. Eventually replaced the seal on the filler cap & have not had a problem since. Worth a look .

Sounds like the main jet or one of the realted passages is blocked, or possibly a sticky or maladjusted needle valve as it sounds as if it is getting inadequate fuel through the main circuit.

First thing I would do is give it a thorough clean.

Originally Posted by B.S.F.

Kits are available in Australia. This is just one of the companies.

Land Rover Parts - CARBURETTOR REPAIR KIT (SOLEX) - L/ROVER S2+2A (Up to & including engine suffix H)

No connection, just a happy customer.
.W.

Hmmm. I think I may have ignored that previously because I thought I needed a new throttle shaft. I'll probably pick up that kit and in conjunction with John's suggestion it may be a blocked main jet, replace that and blast some carb cleaner down the associated passages.

Originally Posted by [COLOR=#3E3E3E

1950landy[/COLOR]]Check the sentiment bole in the fuel line for water or dirt or if some one has fitted a line filter replace it . I used to have trouble similar because the fuel tank is under the seat I would get water in the tank when I washed the vehicle . When it played up I would just blow back through the line filter & it would run fine until the next time the tank got low & sucked up more water. Eventually replaced the seal on the filler cap & have not had a problem since. Worth a look .

I've put an inline filter downstream of the pump when I first got the car, not really understanding/trusting the sediment bowl arrangement. It's pretty new still and is see through and not looking dirty at all so I don't think that's part of the problem. Could be proved wrong though.

Cheers,
Rex