The Triumph Dolomite Club - Discussion Forum

The Number One Club for owners of Triumph's range of small saloons from the 1960s and 1970s.
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PostPosted: Thu May 31, 2018 4:44 pm 
Fitted a new distributor and electronic ignition, my timing was 4 degrees after TDC it is now back to 10 degrees before TDC my problem is it still runs poorly hard to start and when I accelerate it sort of judders I have had a couple of short runs but its just not right, ideas, please.


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PostPosted: Thu May 31, 2018 4:59 pm 
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Location: newton abbot, south devon
Cheap Chinese distributor? £23 ignition unit? Before I go on about my loathing for them, how was it running beforehand? What engine are you working with?


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PostPosted: Thu May 31, 2018 5:19 pm 
1500HL, it was running about the same.


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PostPosted: Thu Jun 21, 2018 12:39 pm 
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Joined: Tue Oct 03, 2006 5:52 pm
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Location: Halifax, West Yorkshire
I've moved the thread here because it is a technical question.

to the OP: Have you tried advancing the timing. 10 degrees before TDC is just a starting point and was for 4 star petrol. What grade of fuel are you using? It might run better with 98 RON fuel such as Shell V Power.

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Meetings take place on the first Wednesday of the month at 8.00pm at The Old Brickworks, Wakefield Road, Drighlington, Bradford, BD11 1EA

1972 Dolomite 1850 auto (NYE 751L - Now for sale)
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PostPosted: Thu Jun 21, 2018 2:56 pm 
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Location: Nr Kenilworth
Sounds like its running on 3 cylinders. If it idles pull the plug leads of the plugs one at a time and see if theres one cylinder that doesnt change ie doesnt reduce rpm. If you find a suspect cylinder check the plug and lead to it and maybe do a compression tesat with all plugs removed (remove + leads from the coil for that test)

Tony

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PostPosted: Thu Jun 21, 2018 3:15 pm 
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Location: Filey, North Yorkshire
What colour are the plugs after it's been running? Are any of them wet? Black? Clean?

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