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01-03-2017, 09:25 PM | #1 |
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Location: Norris Arm NL
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Won't start- please Help
Quick question. Hooked everything up to my motor to make it run today after putting on the newly painted cab. Motor turns over with turn of the key but motor will not catch. Any idea what might be missing? There is one wire now not hooked up that I think could be the cause. I don't have any pictures so I found another similar engine bay online for reference.
I've circled the connection in question. The red wire that comes from the junction and runs to a fused connection, does anyone know what that connection is for? I have not hooked it up but I realize now that it may be a crucial link? Or not? This has me super frustrated so any help would be greatly appreciated
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01-03-2017, 09:53 PM | #2 |
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Re: Won't start- please Help
****UPDATE***************
I have pictures now. You'll see the connection that is not connected which I'm asking about. Thanks again ****EDIT***************** Sorry about the orientation of the pictures
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01-04-2017, 12:16 AM | #3 |
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Re: Won't start- please Help
I think that fuse is the power for the heater/AC blower motor. Other end should go to the fan relay.
Verify that with the ignition on, you have power to the distributor. |
01-04-2017, 12:25 AM | #4 | |
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Re: Won't start- please Help
Quote:
How would I go about checking the power to the distributor?
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01-04-2017, 12:36 AM | #5 |
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Re: Won't start- please Help
Take a test light or volt meter ground one end put the other lead on the ignition coil lead and see if it lights upwork your way back to the ignition switch Its real easy just take your time !Google how to test and its all available better yet buy a manual and it takes you step by step how to trouble shoot
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01-04-2017, 04:52 AM | #6 | ||
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Re: Won't start- please Help
Quote:
If the other half of the fuse holder is missing or not repairable... I'd replace the fuse holder with a 15A Bussman CBC15HB circuit breaker. You'll have to terminate the wires with #10 ring terminals for the 10-12ga wire. If you'd rather put an glass cartridge type fuse holder back in use a Bussman HFB-10 fuse holder. Quote:
If you or the PO upgraded from points to HEI you'll need to replace the 20ga Purple/Black ballast resistor wire from the bulkhead plug to the HEI distributor BAT terminal... If it hasn't already been done. The HEI BAT wire should be much heavier 12ga and the stock color is PINK. Accel makes a BATT/TACH connector for HEI distributors # 170072. You can also get the stock single terminal style HEI BAT connector from Painless # 30809. The ACCEL and GM HEI plugs use Delphi Packard 56 Female terminals. The bulkhead plug uses Delphi Packard 56 Male terminals. I'd extract the terminal from the new connector and from the old ignition wire at the bulkhead plug. Then I'd make a single PINK wire that's as long as the Purple/Black wire you're replacing... with Packard 56 Male on one end and Packard 56 Female on the other. That way you don't have to install a wire with a butt splice in the middle. If you don't have the tooling or patience to roll your own. M&H makes an HEI conversion power wire for the GM A & B-Bodies with the HEI BAT connector on one end and the bare Male Packard 56 on the other. It's M&H Part# 00510. It should work just fine on the 67-75 CK trucks too.
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1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. Last edited by hatzie; 01-04-2017 at 05:39 AM. |
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01-04-2017, 09:29 AM | #7 | |
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Re: Won't start- please Help
Quote:
But the second part of your info has me confused, as the truck is entirely stock. All I've done is take it apart and replace and worn parts. The truck was in my family it's entire life and I can guarantee that the first one to turn a wrench on it for something other than general maintenance was me. I thought the truck had HEI from the factory? Thanks again
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01-04-2017, 12:08 PM | #8 | |
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Re: Won't start- please Help
Quote:
73 & 74 would've come from the factory with breaker points. I had a 50:50 chance of it being a 73 or 74.
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1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. |
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01-04-2017, 01:28 AM | #9 |
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Re: Won't start- please Help
Another question to check: Did you stab the distributor on the correct Top-Dead-Center?
There are two TDCs per revolution on the crankshaft. For the non-firing one, the rotor should be at 11:00 when looking down on it while standing in front of the truck. On the correct, firing TDC, it should be at about 5:00. The end of the first post in this thread tells you how to find the right one. http://67-72chevytrucks.com/vboard/s...d.php?t=689321
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01-04-2017, 09:30 AM | #10 | |
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Re: Won't start- please Help
Quote:
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01-05-2017, 12:42 AM | #11 |
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Re: Won't start- please Help
Do you have a coil mounted on your intake manifold? No coil... you have an HEI. (HEI coil mounted in dist cap) You did not specify which "worn parts" you changed? Did you have the distributor pulled out ? Change the timing chain? The engine requires spark, fuel and to be in time to run. If you never messed with the dist or timing chain, your timing should still be fine. That leaves spark or fuel. Pull a spark plug, reattach to spark plug wire , place plug against clean metal on engine an get a helper to crank engine. If you see plug spark , you have eliminated that. Pour a small amount of gas directly into carb and crank. If engine starts than dies, you are not getting fuel to carb. If you have spark, and have fuel and it still won't run, chances are you have a timing issue. I can explain how you can check this if you like.
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