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Car problems

Posted by 6TDen <iframe src='https://members5.boardhost.com/classicbikemart/info/user=6TDen' width='330' height='300' border=0 style='border:none;'> on February 2, 2023, 9:48 am

A neighbour of mine has a 1927 car which has a fault causing it to miss,or not at all, fire on one cylinder. The plug appears to be wet, petrol not oil, and he has changed all plugs with no change in the situation. I have suggested checking or changing the lead but can't offer any other advice. Does anyone have any advice which may assist him.
Den

Re: Car problems

Posted by pete__s <iframe src='https://members5.boardhost.com/classicbikemart/info/user=pete__s' width='330' height='300' border=0 style='border:none;'> on February 2, 2023, 10:30 am, in reply to "Car problems"

Valve not sealing? Try a compression test

Re: Car problems

Posted by Hants Ian <iframe src='https://members5.boardhost.com/classicbikemart/info/user=Hants+Ian' width='330' height='300' border=0 style='border:none;'> on February 2, 2023, 10:44 am, in reply to "Re: Car problems"

A 1927 car! What make?

The light at the end of the tunnel maybe an oncoming train

Re: Car problems

Posted by 6TDen <iframe src='https://members5.boardhost.com/classicbikemart/info/user=6TDen' width='330' height='300' border=0 style='border:none;'> on February 2, 2023, 12:27 pm, in reply to "Re: Car problems"

Sunbeam Ian
Den

Re: Car problems

Posted by Beezabryan <iframe src='https://members5.boardhost.com/classicbikemart/info/user=Beezabryan' width='330' height='300' border=0 style='border:none;'> on February 2, 2023, 10:46 am, in reply to "Car problems"

Simple question - Is that wet plug sparking or not ?

BeezaBryan

He knows not where he's going, For the ocean will decide,
Its not the destination, It's the glory of the ride (Edward Monkton, Zen Dog)

Re: Car problems

Posted by Tonupdave <iframe src='https://members5.boardhost.com/classicbikemart/info/user=Tonupdave' width='330' height='300' border=0 style='border:none;'> on February 2, 2023, 11:22 am, in reply to "Re: Car problems"

Distributor thats usually the fault on cars that old ..probably tracking in the cap. I have known it to even be worn bearings in the Distributor

Tonupdave..T.U.D.

Re: Car problems

Very often wear in the dizzy will cause the car to run badly. Try closing the gap on the points and see if it runs. As the car is this old has it got a magneto.

The light at the end of the tunnel maybe an oncoming train

Re: Car problems

Yes, I believe it has a magneto Ian
Den

Re: Car problems

Posted by Lannis <iframe src='https://members5.boardhost.com/classicbikemart/info/user=Lannis' width='330' height='300' border=0 style='border:none;'> on February 2, 2023, 12:58 pm, in reply to "Re: Car problems"

Troubleshooting is

Compression
Ignition
Fuel

in that order. Valve lash check and compression check first. Is it sparking? second.

Lannis

At no time in history have the people forcing other people into compliance been the good guys.

Re: Car problems

I'm sure he said it wasn't Bryan but can't confirm as he is at work at the moment.
Den

Re: Car problems

If that is so Den then it is a case of working backwards through HT cable to dist or mag etc

BeezaBryan

He knows not where he's going, For the ocean will decide,
Its not the destination, It's the glory of the ride (Edward Monkton, Zen Dog)

Re: Car problems

Thanks Bryan and to all who responded, I shall pas the comments on to him.
Den

Re: Car problems

Posted by MadMike <iframe src='https://members5.boardhost.com/classicbikemart/info/user=MadMike' width='330' height='300' border=0 style='border:none;'> on February 2, 2023, 2:10 pm, in reply to "Re: Car problems"

Den just how often does the car get used. Magnetos can lose their magnetism over long periods of inactivity. This becomes a serious problem on an old mag, in which case it needs refurbishing.

Other opinions may be available but this one is always correct.

Re: Car problems

When I was a patrolman with the AA I used to have to deal with on a lot of vintage cars was when the weather warmed up. The biggest problem was magnetos breaking down.Either tracking on the distributor cap, easy to see as black lines. The failure of the rotor arm, usual non start. Like our old bikes armature windings and condenser failing.Is there a spark on all leads if so try closing up the plug gaps a little.

The light at the end of the tunnel maybe an oncoming train

Re: Car problems

Posted by Thumpersloper <iframe src='https://members5.boardhost.com/classicbikemart/info/user=Thumpersloper' width='330' height='300' border=0 style='border:none;'> on February 5, 2023, 11:16 am, in reply to "Car problems"

Check the distributor cap on the magneto.
The brass terminal for that cylinder could be worn or there could be a hairline crack which is causing tracking and loss of spark at the plug. I had exactly the same problem on my 1927 Trojan.

Rocker and Ton-Up Boy/old bugger

Re: Car problems

Thanks I'll pass that on.
Den

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