69 Chevy points to HEI troubles - The 1947 - Present Chevrolet & GMC Truck Message Board Network

williars · 05-30-2004, 05:42 PM

I pulled my 69 out today. She turns over just fine, but acts like it has no spark. I pulled the #1 plug, and there is "some" spark, but not what I believe there should be. I pulled the battery lead off the distributor and there is 12.4 volts with the key on...and only 8.6 volts when it is cranking. Is that correct? Any suggestions? Thanks.

crazy longhorn · 05-30-2004, 05:52 PM

yup, you need to clip out the resistor wire(white cloth), & remove the yellow wire from the starter. If you look at the fuse box, you will find a spot that says IGN unfused.....you can run a wire from there to feed the dist(it will be full batter voltage). i would go 10 or 12 guage wire , & route through a grommet on the firewall. some guys add a circuit breaker or fuse to the line. Good luck,crazyL

williars · 05-30-2004, 06:20 PM

I just ran a wire straight from the battery to the battery input on the HEI. I still only get 8.5 volts in the crank position. I get the full 12+ with the switch one. Maybe the battery is bad??? Thanks Ryan

Sweet72 · 05-30-2004, 09:59 PM

Maybe your battery has a weak cell, have it checked (saw today that autozone does this for free) before you replace it. My first thought was that you didn't remove the resistor wire for the old points style ignition too. Check the voltage at the battery while in the start position, if it's a full 12V and you have 8.5 at the other end of the wire then you have a problem with the hei bat. wire or connections. Maybe corrosion or a bad crimp etc. Good luck. Hey, I see you're in Waldorf not too far from here.
-Sam

*Slams_58* · 05-30-2004, 10:15 PM

We jsut finished doing this..we ran a 12 guage wire to the unfused plug ont he fuse box...worked like a charm!

05-30-2004, 05:52 PM	#2
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,403	yup, you need to clip out the resistor wire(white cloth), & remove the yellow wire from the starter. If you look at the fuse box, you will find a spot that says IGN unfused.....you can run a wire from there to feed the dist(it will be full batter voltage). i would go 10 or 12 guage wire , & route through a grommet on the firewall. some guys add a circuit breaker or fuse to the line. Good luck,crazyL __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....

05-30-2004, 06:20 PM	#3
williars Registered User Join Date: Mar 2004 Location: Waldorf, Maryland Posts: 23	12 volts I just ran a wire straight from the battery to the battery input on the HEI. I still only get 8.5 volts in the crank position. I get the full 12+ with the switch one. Maybe the battery is bad??? Thanks Ryan __________________ Ryan 69 Camaro 396 Yenko Clone 71 Cheyenne SWB 402 69 C-10 Stepside 454 4speed 83 Scottsdale Stepside 350/Auto 99 Mustang GT In the works: 67 Chevy II Nostalgia Straight Axle Blown 427

05-30-2004, 09:59 PM	#4
Sweet72 Registered User Join Date: Nov 2003 Location: Alexandria, VA Posts: 1,534	Maybe your battery has a weak cell, have it checked (saw today that autozone does this for free) before you replace it. My first thought was that you didn't remove the resistor wire for the old points style ignition too. Check the voltage at the battery while in the start position, if it's a full 12V and you have 8.5 at the other end of the wire then you have a problem with the hei bat. wire or connections. Maybe corrosion or a bad crimp etc. Good luck. Hey, I see you're in Waldorf not too far from here. -Sam __________________ '72 GMC SWB C1500 Custom, frame-off in progress. 383 SBC, 9:1CR, Comp Cams XE262H, Scat internal balanced crank, Eagle SIR 6" rods, Keith Black dish pistons, Dart Iron Eagle 72/180 heads, Weiand Stealth intake, Stewart stage I water pump, Holley 4bbl vac sec, TH350 with B&M Shift Improver Kit. 12 bolt positraction.

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

05-30-2004, 05:42 PM	#1
williars Registered User Join Date: Mar 2004 Location: Waldorf, Maryland Posts: 23	69 Chevy points to HEI troubles I pulled my 69 out today. She turns over just fine, but acts like it has no spark. I pulled the #1 plug, and there is "some" spark, but not what I believe there should be. I pulled the battery lead off the distributor and there is 12.4 volts with the key on...and only 8.6 volts when it is cranking. Is that correct? Any suggestions? Thanks. __________________ Ryan 69 Camaro 396 Yenko Clone 71 Cheyenne SWB 402 69 C-10 Stepside 454 4speed 83 Scottsdale Stepside 350/Auto 99 Mustang GT In the works: 67 Chevy II Nostalgia Straight Axle Blown 427

05-30-2004, 10:15 PM	#5
Slams_58 Account Suspended Join Date: May 2002 Location: I let ya know as soon as I know Posts: 3,593	We jsut finished doing this..we ran a 12 guage wire to the unfused plug ont he fuse box...worked like a charm!



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.