[Healeys] Backfire

[Robert Markovich]

A voltage drop can do that. I had that happen on my BN7 and after much searching found that the wires to the ignition switch were loose. Tightening solved the problem. I also prefer the Lucas sport coil to the Pertronix as their coils have been known to fail (mine did on an earlier Healey). And yes, the .035 gap is too wide; go with the factory setting. 


Sent from the all new AOL app for iOS


On Friday, September 19, 2025, 6:42 PM, Richard Antal via Healeys <healeys at autox.team.net> wrote:

Gents,     A few days ago I replaced the sparkplugs, ten years old or more, with six NGK BP5ES plugs gapped to 35, and a Pertronix 3 ohm coil. I've not yet changed the wires, distributor cap or rotor. Today I drove the BJ8 almost 200 miles without incident at speeds up to 60 mph. While going 80 mph on the interstate, over a span of two or three seconds, the car bucked and backfired three times. I immediately dropped the speed to 50 and then gradually back up to 80 with no further backfiring. What could have caused this discomfiting turn of events? Thanks for your thoughts.rich antal_______________________________________________
Support Team.Net http://www.team.net/donate.html
Suggested annual donation  $12.75

Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archive/healeys

Healeys at autox.team.net
http://autox.team.net/mailman/listinfo/healeys

Unsubscribe/Manage: http://autox.team.net/mailman/options/healeys/rmarkovich@aol.com




-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/healeys/attachments/20250920/1b15eed9/attachment.htm>