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+--- Thread: Constant misfire ?????? (/showthread.php?tid=9472)
Constant misfire ?????? - Bluebird7 - 13-07-2024
As per thread title !!!!!
I simply cannot get my very very very expensive rebuilt engine (coil) to run properly ????
there is a constant misfire, that I can only guess is electrical/ignition ???
I've simply run out of ideas and if it continues ,I'll be throwing a gallon of unleaded over it and a box of swan vestas .
Just changed condenser, still the same, so coil next I guess, what's the best one to fit (6v) ???
Or is anybody near me, West Norfolk, that can pop by for a look ?
RE: Constant misfire ?????? - Nick Salmon - 13-07-2024
Never forget...if you think it is ignition it is probably fuel - and vice versa.
More info needed. Has it ever run properly? What work has been done to the engine? Were all the ancillaries working before being put on the engine?
RE: Constant misfire ?????? - Bluebird7 - 13-07-2024
Hi Nick,
It used to 'fly along' (at Curborough & Kop Hill) , but then started to 'misfire under load', at Kop last year.
The engine needed a rebuild, but I'm still on the 'old' dizzy/coil/etc.
It's now been fitted with a SU, and after the rebuild started 'on the button' & ran OK for 60/70 miles.
but now starts missing only after 2-3 mile ( when warm )???
Only use E5. Any thoughts ???
RE: Constant misfire ?????? - Ruairidh Dunford - 13-07-2024
Did you build it?
RE: Constant misfire ?????? - Ivor Hawkins - 13-07-2024
It sounds like the coil breaking down, what plugs are you using?
RE: Constant misfire ?????? - Bluebird7 - 13-07-2024
Hi Ruairidh,
Wish I had !!!!!!!!!!!!!!!!£££££££££
Hi Ivor, I'm leaning to the coil too, but what one to consider.
Fitted a Distributor Doctor condenser this evening, no change
so must be coil ????
Plugs are D16
RE: Constant misfire ?????? - Ruairidh Dunford - 13-07-2024
Have you spoken to the person who built it?
RE: Constant misfire ?????? - Bluebird7 - 13-07-2024
affirmative !!!
RE: Constant misfire ?????? - Robert Leigh - 13-07-2024
Where are you in 'West Norfolk'? I'm north of Cambridge but I get to March occasionally, and I have been dealing with A7 problems for 65 years.
RE: Constant misfire ?????? - Bluebird7 - 13-07-2024
Hi Robert,
in D/Market, just re-joined A7 Cambridge Club,
We have spoken in the past but never met yet.
Just need to get this car going properly after rebuild.
