I have a MkIV with a 347 engine with an MSD 6AL ignition system and FAST EZ-EFI-2.0 fuel injection. I've had various EFI and "hiccup problems as detailed in my previous thread
https://www.ffcars.com/forums/17-fac...x-failure.html
The FAST EZ-EFI-2.0 intermittently loses the idle settings - probably once a month for the past 2 years. At partial and full throttle it is fine, but when it loses the idle settings, being at a stop light is a PITA. I've also had "hiccups" in the past year or so where the engine seemed to stop running and then immediately start up again. Only lasted a second at most except for one time where it died for about 5 mins. Then it started up fine.
I've called FAST a number of times, and they always say something different. Not impressed with their support. I've tried things such as shielding the MSD wire to the coil and adding an MSD noise capacitor, but they didn't seem to help. For the "hiccups", some people said a bad ground. I've done some rewiring to hopefully reduce this possibility.
Well, last week, the car died and didn't start up. It was backfiring and sputtering and then nothing. My wife had to tow it home, which was only about 200 yards away luckily. Don't ask how I hooked up the tow strap. It made it home unharmed.
Had good fuel pressure but no spark. Checked the MSD box and it seemed fine. Finally replaced the coil and it fired up right away and has been running fine since!!
I know Bob Cowan had a problem with his coil and carries a spare per this old 2011 post
http://www.clubcobra.com/forums/all-...e-driving.html
So, my questions are
1. Do coils fail that often?
2. Should I carry a spare coil? Reasonably cheap, so that's what I plan to do.
Thanks.