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07-13-2011, 08:00 PM
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#1 |
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Registered User
Join Date: Feb 2011
Location: wichita ks
Posts: 28
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I'm Stumped!!
i was driving my 72 around looking at houses. It was aroung 105 out and now i know not to drive when its that hot. I have a 454 bbc in it. Got home fine. But when i went to start it again to put it back it the garage it wouldn't start. just cranking like a mother. Figured vapor lock right? Wrong! it cooled down and still no start. Took two plugs out which look okay to me and touched them to bolts and no spark. I have hei so i figured the modual is fried. changed it and the rotor. Still no spark. Its just cranking?!!!!! I'm rather frustrated. please shed some light. I have new summit racing 90 degree wires. Surely all the plugs didn't go bad. I just don't know.
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07-13-2011, 08:03 PM
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#2 |
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Registered User
Join Date: Dec 2007
Location: Nanaimo B.C.
Posts: 604
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Re: I'm Stumped!!
check for power to the hei and also the fuses.
__________________
I was hooked on these trucks since 1982 when I drove my budys fathers 1968 Custum GMC 396 automatic dana 60 rear with a power lock diff what a ride more fun then we will we can ever tell!! |
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07-13-2011, 08:32 PM
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#3 |
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Registered User
Join Date: Feb 2011
Location: wichita ks
Posts: 28
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Re: I'm Stumped!!
the fuses look fine. How do check for power to the hei?
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07-13-2011, 09:00 PM
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#4 |
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Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Re: I'm Stumped!!
There should be 12 volts to the distributor with the ignition on. Measure the voltage at the terminal on the distributor cap marked "ignition". There should not be a fuse in the wiring circuit for the ignition wire leading to the distributor. If you have power then check the reluctor coil with an ohm meter. It should read approximately 750 ohms. I f no reading or open, then it should be replaced.
Jim
__________________
1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC |
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07-14-2011, 09:20 AM
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#5 |
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Registered User
Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 2,144
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Re: I'm Stumped!!
Is the rotor turning? May have sheared the distributor gear or something. If not, are the rockers moving?
__________________
'83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project |
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07-14-2011, 12:55 PM
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#6 |
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Senior Member
 
Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,886
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Re: I'm Stumped!!
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07-14-2011, 01:21 PM
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#7 |
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Registered User
Join Date: Jun 2003
Location: Simi Valley
Posts: 145
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Re: I'm Stumped!!
I had the same thing happen while I was driving a few weeks ago at night. At first I thought I was out of gas. Went and put 5 gallons of fuel in and would just turn over. I ended up having my wife pull my truck home....The next day I pulled the fuel line and checked to see if my fuel pump was working....it did.....I then pulled the main wire to the HEI from the ignition. at first I didn't have anything and then for some reason it was giving me the full 12v....I reinstalled the wire and it started.....no problems since.
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www.cardomain.com/id/pooz911 |
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