Before reading them though I was in the garage asap today.
I set the carbs to factory set-up (I even read the instructions)
Filled with 2 gallons of fresh fuel having checked the filters (I do listen to you) which were clean.
I took the 3 plugs out of the offending side of the engine. #4 was 'unfired' and the other 2 sooty (as in too rich)but firing.
I had found some new plug lead from about the mid 80's with old fashined coper wires down it and an old plug connector about 1973...
Replaced the #4 existing lead and separated as much as possible the three leads.
Cranked it over forgetting to reconnect the linkage between the two carbs (idiot) so it started on one set of acellerator jets.
RAN A DREAM
Not a pop or a f@rt or a bang anywhere.
I waited for it to warm on a 1200 rpm ish tick-over (as per PMO instructions)
Not a sound. The pulses from both side are even and the heat is the same too.
After a few mins blipped the throttle and it sure does spring to life.
Stopped it and took the plugs out. All three running but #4 still not as sooty as 5 and 6 (4/5/6 are the cylinder numbers on that side of the flat 6)
Put back together and tried again.
As before, running a dream and very responsive to a 25% throttle movement blip.
Tided all the leads, made cable-tie separators for now and tried it again.
As before.
I think this is a result.
To the post mortum:(see pic below)
1
Lead separated from the plug top.Plug top taken apart to find the resistor 'slug' rattling in the insulator tube.
2
Looked at the cpeer wire strands in the dist cap ferrul (?) and there i find the cable is not folded over under the copper sleeve but cut short. The ferrul/wire connection must be by the barb cutting through the insulation and into the strands.
I have always folded the wire over and then crimped the ferrul The barb sismply making sure it does not pull off later.
My replacement has the strands soldered to the ferrul for peace of mind. All the other dist ends are the same as this one, so the lot will be changed to the fold and solder method.
So there we are job done at last.
It was always going to be something daft or catastrophic.
Prepping the car now for a weekend at Loton next week.
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Posts: 2239 | From: Wolverhampton | IP: Logged |
I've got a little "trophy" cabinet of things that caused angst, blew up, etc to remind me of the problem solving which makes our hobby so much fun! 
