Bad coil???

L79racer · 04-26-2015, 02:16 PM

So I'm trying to figure why I lost 3 to 5 mph. Plugs are black that usually are a nice brown. carb is not dumping and my AF meter says super rich. Drop some jets no change. Could the coil not be putting out enough power. I just tested it with meter. Its a digital 6 box with a Blaster HVC ll 8253 coil. It had .07 ohms across primary terminals and .739k ohms from positive terminal to coil post.

Pedigo Perf · 04-26-2015, 03:03 PM

Clean out your high speed air bleeds

GTX JOHN · 04-26-2015, 05:12 PM

I have had the HVC II coils (Red and Blue) malfunction sometimes without
any warning. I would try to borrow a Blue one from someone and try it
a pass. Even when bad........They check OK at MSD trailer but MPH falls
off 5 sometimes more!

L79racer · 04-26-2015, 08:45 PM

Thanks guys. I'll look into the carb and I will borrow a coil from my brother and give it a try. Hopefully thats the problem. I want the mph back.

04-26-2015, 02:16 PM	#1
L79racer Member Join Date: Jan 2005 Location: North Massapequa, NY Posts: 218 Likes: 0 Liked 0 Times in 0 Posts	Bad coil??? So I'm trying to figure why I lost 3 to 5 mph. Plugs are black that usually are a nice brown. carb is not dumping and my AF meter says super rich. Drop some jets no change. Could the coil not be putting out enough power. I just tested it with meter. Its a digital 6 box with a Blaster HVC ll 8253 coil. It had .07 ohms across primary terminals and .739k ohms from positive terminal to coil post.

04-26-2015, 03:03 PM	#2
Pedigo Perf Member Join Date: Feb 2008 Location: Wichita Ks Posts: 383 Likes: 70 Liked 30 Times in 17 Posts	Re: Bad coil??? Clean out your high speed air bleeds

04-26-2015, 05:12 PM	#3
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,719 Likes: 2,765 Liked 2,425 Times in 687 Posts	Re: Bad coil??? I have had the HVC II coils (Red and Blue) malfunction sometimes without any warning. I would try to borrow a Blue one from someone and try it a pass. Even when bad........They check OK at MSD trailer but MPH falls off 5 sometimes more! __________________ John Irving 741 Stock 741 Super Stock

04-26-2015, 08:45 PM	#4
L79racer Member Join Date: Jan 2005 Location: North Massapequa, NY Posts: 218 Likes: 0 Liked 0 Times in 0 Posts	Re: Bad coil??? Thanks guys. I'll look into the carb and I will borrow a coil from my brother and give it a try. Hopefully thats the problem. I want the mph back.