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MG MGB Technical - Will run on choke only.

I have not had my car running for 9 months, but it started almost at once when I tried it today. I now find it will only tick over if I have the choke out a quarter turn. there is a new distriburtor and plugs. Any suggestions. P.S I am a novice with cars, but I do enjoy it when I get things working right.
J E Turner

One can assume that the plugs are not the cause - the new dizzy on the other hand might not be firing at the right time for your engine - there are so many variations that even the experienced mechanic can get the timing slightly out. The vacuum advance may not have been replaced or the plastic pipe broken. The air filters may have deteriorated over the laid up period and the fuel in the tank may be rather old etc etc.

I suggest you change the air filters and turn up the wick on each of the carbs as shown in the HB. Check the vacuum advance pipe is airtight by sucking while attached to the dizzy (should hold a vacuum for sometime) or get someome with a strobe to check it at the same time as the dizzy timing. Then check the contact gaps inside and let us know how you got on.

Good luck
RMW

I guess it is either fuel starvation through faulty pump, fuel line blockage, carb jet problem. Maybe air is getting in at some point other than the carb throat and upsetting the fuel flow. Check Vacuum Advance and pipe, Brake servo vacuum pipe, carb throttle spindles.

Did it run OK last week?

Where are you in Leicestershire, I'm here aswell?
Richard Evans

Now had dizzy timing changed, the engine sounds just great, thanks for your suggestions. PS Just put another problem on threads, any suggestions.
J E Turner

This thread was discussed between 27/07/2004 and 01/08/2004

MG MGB Technical index

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