Well I think it is worth a try if I can get a 440 carby that bolts straight on. What do you all think of this theory: Because the inlet manifold is not heated, when it is still cold the vapour condenses on the inside and causes the motor to stall and backfire. The pressure of the backfire then cause...

Has anyone actually put a 440 carburettor on a 340 1.7l ? Tricky? Result?

well I have done the opposite really, I have disabled the cold ait intake so now it only gets warm air and thus no freezing.

Ok, now I am really optimistic. Having had carburetor freezing problems for 2 years (since buying) I have replaced the floater, needle and seat, rebuilt the carby, shaved the base, replaced the thermister and now finally some joy. I have removed the thermostat from the air intake flap so that it doe...

Your dead right there. According to Wikipaedia the 340 is notorius for carburetor problems. I did replace the pre-heater thermistor and now it gets quite hot but only where the small thermister is housed. I have been reading a bit about warm air intakes and cold air intakes. warm air is compolsory i...

1990 and yeah it looks like it might be to the crankcase ventilation. I wonder if i could fit an earlier water heated type because this freezing is driving me mad.

As soon as my warm air intake switches to cold air the carby (solex 28/34) freezes. Do these things open too early when they get old? Also, the hot water circulation in the carburetor base, there is a 3/8" rubber hose coming out but how does the water get in?

Here is the original pre-heater: http://i154.photobucket.com/albums/s253 ... ture-1.jpg Other to come.

Two things: Do you mean the microwave part or the original. How do I attach a jpg?

Ok, I wrecked a junked microwave oven and found a beatifull ceramic resistor with spade connectors. It is designated as 10 Ohm 20 Watt. As predicted, it draws 1.2 amp. I attached it to the carby body and ,believe it or not, it gets rid of the flat spot and stalling after about 5 minutes. My only con...

With a tag like antiekradio i don't doubt you but how do i recognize this component and is 12v ok. What I like about the fan resister idea is that I can control the on/off via the fan.

The Renault number for the float set is as above. I wonder what I can use in stead of the ceramic disc. Maybe a fan resistor.

So what does the thermister do? If it is only a thermal switch that turns off when warm then is there also a heating coil there somewhere? Also, what torque for carby to manifold bolts?

I have made 3 attempts to fix my carburation problem. 1. Used rebuild kit obtained from The Carburettor Exchange in Leighton Buzzard. Did not include electrical heating part. Cost £25 Result: No change. 2. Weighed float set (12g) and bought new float set (6g) from Renaullt (part 77 01 031 047) Cost ...

No but I use the HSS quite often, its a good service. Unfortunately its days are numbered.