Intermittent grounding of the coil to cut-off switch wire?
Bob Haskell
AHCA 3000 Mk I registrar
http://www.ciahc.org/registry_3000mk1.php
On 07/16/2015 02:32 PM, Michael Salter wrote:
> I have done the following;
>
> STEPS TAKEN TO FIND RUNNING PROBLEM
>
> This car has an original cap, original wires, original NA8 spark plugs,
> original black coil, original fuel pump. I am determined not to change
> any of these original parts unless I can confirm definitely that that
> item is the source of the problems?it a concours issue!!
>
> After many short trips 10 ? 15 miles etc... the engine started to run
> very badly after 35 odd miles of a longer test drive on a warm but not
> hot day after travelling over a few hundred meters of rough road under
> construction eventually stopping completely as I tried to climb a hill.
> Sounded to be running on 2 cylinders at times. Backfiring through
> exhaust? no throttle response.
>
> Cranked but would not start..Appeared to have spark at the coil wire..
>
> Affer cooling started out again?after 20 odd miles stopped with the same
> symptoms? pulling choke seemed to make no difference.
>
> Could not hear fuelpump ticking but had fuel pressure at the front
> carb??good spark at coil wire?spark at plugs looked thin ?Changed the
> condenser and the rotor and it started reluctantly and ran well for
> about 15 miles then stopped again?.same symptoms?.changed rotor?ran for
> 2 miles same symptoms?
>
> Found ?3 cut? washers under the carb float chamber struts which I think
> could be sealing off the vent slots for the float chambers?
>
> Next day, today, I headed out for another extended drive and the car ran
> perfectly on a similar day for 36 miles then repeated the problem after
> 36 miles and I just managed to nurse it home another 11 miles?.it
> actually died as I approached our driveway and I coasted in with the
> ignition turned off.Nothing would make it start.
>
> Tested the coil 4.6 ohms with no short to ground. Took off the float
> chamber lids and both were full to the correct level. The engine cranked
> but would just not start..
>
> After checking everything I could think of I believe that I have found
> the problem but I don?t have time to do another 36 mile test before
> loading the car to take to Enclave?
>
> What do you think I found?
>
>
> Michael..
>
> --
> /If you can't fix it with a hammer, you've got an electrical problem./
>
>
>
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation $12.75
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
>
> Healeys@autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
>
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/healeys/rchaskell@earthlink.net
>
_______________________________________________
Archive: http://www.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
ox.team.net
|