August 06, 2020, 08:47:53 AM

Author Topic: Well crap, dropped a cylinder today.  (Read 920 times)

Offline Cobranut

Re: Well crap, dropped a cylinder today.
« Reply #15 on: May 08, 2020, 07:26:33 PM »
I talked to Matt Cramer about it some time ago. He said they didn't do it because it risks a lean burn from leftover fuel on the wall. It's not a 100% off.
Maybe they've added it recently but I didn't see it when I looked not too long ago. <3 months.

He advised running a CAT and anything more than retard and rich was a bad idea. Obviously. Ha

No CAT's here. ;-)

That makes sense, though I'd think if you cut spark and fuel on the same cylinders that wouldn't be a problem.
I know most pre-DBW OEM's use fuel cut for rpm limit, and they don't seem to suffer from lean mixtures.
1995 FD, 7.0 Liter stroked LS3, T56, 8.8, Samberg kit.

Offline Cobranut

Re: Well crap, dropped a cylinder today.
« Reply #16 on: July 19, 2020, 01:01:30 AM »
Finally had to move the FD to get my Focus on the lift. (Hit a highway gator coming home from Alabama  >:().
When I moved it back I took the opportunity to troubleshoot the problem.
Long story short, the #4 coil is bad.
I bought these on eBay, and I guess it's possible they're counterfeit, but they did come in ACDelco boxes and look legit to me.
Anyone else had a bad experience with these D585 coils?

Thanks,
David
1995 FD, 7.0 Liter stroked LS3, T56, 8.8, Samberg kit.

Offline paul_3rdgen

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Re: Well crap, dropped a cylinder today.
« Reply #17 on: July 19, 2020, 04:09:52 PM »
That sucks, but that’s good news!  Simple fix. 


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Offline digitalsolo

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Re: Well crap, dropped a cylinder today.
« Reply #18 on: July 19, 2020, 04:59:07 PM »
Yeah, annoying but good news!

I've never seen a dead OEM coil that wasn't physically damaged, but I'm pretty sure all man-made parts are capable of failure.  :D
Blake MF'ing McBride
1988 Mazda RX7 - Turbo LS1/T56/ProEFI/8.8/Not Slow...   sold.
1965 Mustang Coupe - TT Coyote, TR6060, modern brakes/suspension...  project car
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Offline Cobranut

Re: Well crap, dropped a cylinder today.
« Reply #19 on: July 19, 2020, 10:30:48 PM »
Yeah, annoying but good news!

I've never seen a dead OEM coil that wasn't physically damaged, but I'm pretty sure all man-made parts are capable of failure.  :D

That's what I was thinking, which was the reason I went with ACDelco instead of aftermarket.
The vendor I bought these from is no longer on eBay, and another ad for the same coils had a few bad reviews regarding failure, so I'm a little suspicious.

I ordered two more from another vendor.  I'll test both and keep the extra as a spare.

Thanks guys.
1995 FD, 7.0 Liter stroked LS3, T56, 8.8, Samberg kit.

Offline wickedrx7

Re: Well crap, dropped a cylinder today.
« Reply #20 on: July 20, 2020, 08:17:44 AM »
I never buy anything “new” on eBay. Too many fakes out there.

1993 Touring, 2012 L99, T-56, Ronnin 8.8, Ohlins, Speedhut, Samberg and lots of custom parts
Build Thread - http://www.norotors.com/index.php?topic=19354.0
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Offline freeskier7791

Re: Well crap, dropped a cylinder today.
« Reply #21 on: July 31, 2020, 05:59:07 AM »
glad you got it figured out, I think coils can just go bad from time to time, had a friend lose 2 coils on his dragster, brand new holley units
https://www.youtube.com/thedriftingdad
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Offline Cobranut

Re: Well crap, dropped a cylinder today.
« Reply #22 on: July 31, 2020, 08:09:32 PM »
glad you got it figured out, I think coils can just go bad from time to time, had a friend lose 2 coils on his dragster, brand new holley units

I received the new coils about a week ago, but I'm working on my daily driver Focus.
A car hit a truck tire carcass and kicked it up into my front end. Tore up the bumper, fog lights, and a bunch of plastic stuff, plus a few dents, and the radiator and A/C condenser.  (Both were bent and the mounts cracked, but fortunately didn't leak, since I was about 300 miles from home in 95 degree weather when it happened.)

Someday I'll get back to the FD.  ::)
1995 FD, 7.0 Liter stroked LS3, T56, 8.8, Samberg kit.