Re: Coil getting too hot causing a rough idle?
[Re: mcat4321]
#2052410
04/12/16 12:26 AM
04/12/16 12:26 AM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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engage the carb power circuit & see what happens. sub in another coil & see what happens.
live every 24 hour block of time like it's your last day on earth
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Re: Coil getting too hot causing a rough idle?
[Re: Belvedere1]
#2052420
04/12/16 12:33 AM
04/12/16 12:33 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Do you guys suppose its possible for an MSD Blaster 2 coil to get too hot and cause the idle to get bad enough to where it feels like there is a cylinder or 2 down? Its mounted on a Performer RPM right in front of the carb, the motor can run up to 210 or so. The idle is great cold and very responsive but when its up to temp and coming to stop at a light it idles down really low and rough and will surge like its trying to pick up the dead cylinder. Coils can and do break down... but it can be a LEAN carb... try a coil.. it made a day and night difference on my junk EDIT I know I wasnt lean.. I was fouling out plugs 
Last edited by MR_P_BODY; 04/12/16 12:37 AM.
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Re: Coil getting too hot causing a rough idle?
[Re: Belvedere1]
#2055486
04/16/16 12:36 PM
04/16/16 12:36 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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If your using a coil that calls for a resister and your not using a resister and running 12v to it.. it will get HOT.. engine heat shouldnt be a issue.. plenty of coils were mounted on the intake.. now days they have 8 coils mounted on the valve covers without issue... even on a HOT heat soak the under hood temps get up to 300*.. and that was on a super hot day on top of black top (117* that day in Death Valley)
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Re: Coil getting too hot causing a rough idle?
[Re: Belvedere1]
#2055540
04/16/16 02:07 PM
04/16/16 02:07 PM
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Joined: Jul 2004
Posts: 19,317
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,317
State of confusion
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I am concerned about heat radiating from the engine causing the coil overheat. I also plan on moving to the inner fender and seeing if that changes anything. Since I moved my coil,ford starter relay and ign. box under the pass. side of the dash, everything last longer and the MSD 6200 box is well over 10 years old..........
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Coil getting too hot causing a rough idle?
[Re: Belvedere1]
#2055671
04/16/16 06:04 PM
04/16/16 06:04 PM
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Joined: Jan 2003
Posts: 75,008
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,008
U.S.S.A.
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Using a ballast resistor, Firecore dist, MSD Blaster 2 coil. Does that coil want a resistor ? does your fuel have 10% ethanol ???
running up my post count some more .
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Re: Coil getting too hot causing a rough idle?
[Re: Belvedere1]
#2055674
04/16/16 06:18 PM
04/16/16 06:18 PM
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Joined: Nov 2011
Posts: 2,154
Its a TRAP!
DARTH V8Я
Oh No!! I just had a moron attack!
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Oh No!! I just had a moron attack!
Joined: Nov 2011
Posts: 2,154
Its a TRAP!
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Sounds like the fuel is boiling.
When it takes more than a sweet mullet to prove you rule at the trailer park..
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