Rich

for those with Series MM sidevalve cars produced between September 1948 and February 1953
Johnno
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Rich

Postby Johnno » Sun May 10, 2020 2:42 pm

Hi all,still having problems with rough running on my ‘52 side valve.Rebuilt carb,reground all valves and all valve springs are same length.Tappets set at 17 thou timing checked.Compression roughly equal on all cylinders.Trouble with initial starting and then engine ‘hunts’.What else can I do?
Thanks,John.
Power to your Pistons,Johnnydoome.

JOWETTJAVELIN
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Re: Rich

Postby JOWETTJAVELIN » Sun May 10, 2020 4:06 pm

Taking it the correct needle was fitted to the carb and correctly centred I would check the jet isn't sticking. These old H type carbs with the cork glands can sometimes cause the jet to stick down, not returning when you dispense with the choke.
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Johnno
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Re: Rich

Postby Johnno » Tue May 12, 2020 1:18 pm

All correct,centred and not sticking,big spark,timing checked.Now not starting at all.
Power to your Pistons,Johnnydoome.

RobThomas
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Re: Rich

Postby RobThomas » Tue May 12, 2020 8:32 pm

Bob weight come loose in the distributor?
Cardiff, UK

Johnno
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Re: Rich

Postby Johnno » Thu May 14, 2020 2:49 pm

Checked that this morning Rob,all ok.
It will start instantly with a whiff of easy start but the cuts out.Does this point to carburettor? I can see nothing wrong with it though.
Power to your Pistons,Johnnydoome.

RobThomas
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Re: Rich

Postby RobThomas » Fri May 15, 2020 5:57 pm

Might possibly be crudded up at the bottom of the float chamber where it leads up to the needle. Can you lift out the brass float? It does sound like a lack of fuel getting through. Does the piston visibly rise when it first fires?
Cardiff, UK

Johnno
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Re: Rich

Postby Johnno » Sat May 16, 2020 7:06 am

Thanks for reply Rob,the carburettor is spotless in and out.Jet centred correctly and piston free.Just can’t see anything wrong anywhere.Despair time now.
Power to your Pistons,Johnnydoome.

Johnno
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Re: Rich

Postby Johnno » Mon May 18, 2020 2:41 pm

Well,here’s a thing.Thought I would try once again.Half choke,couple of tickles on the float and,,,,,,,,,,fired up and ticked over perfectly! My car is not named Maggie Mae for nothing! Apologies girls but most women/ girls are slightly temperamental.I’ll just sit back and wait for the flack.
Thanks to all who took the trouble to try and help.
Power to your Pistons,Johnnydoome.


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