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Old July 1st, 2013, 05:47 PM   #1
chuck202003
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Default 1978 460 Hard starting when hot

I have a 1978 460 in my mud truck. It starts up no problem when the engine is cold. Soon as I put some heat to it and try to restart it, it acts like the battery is dead. I have had 3 different batteries in it (2 of them brand new). Just put a new starter in it. I have jumper cables hooked to me for a jump and it just rolls really slow. But soon as the motor cools off it starts right up no problem. Any idea what the problem is?
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Old July 1st, 2013, 05:54 PM   #2
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Sounds like the starter is getting hot and drawing too many amps.
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Old July 1st, 2013, 06:12 PM   #3
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timing?
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Old July 1st, 2013, 06:17 PM   #4
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I had the timing set to stock, Just advanced it and still doing the same thing. For the starter I dont know why that would be heating up.
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Old July 1st, 2013, 06:25 PM   #5
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Quote:
Originally Posted by chuck202003 View Post
I had the timing set to stock, Just advanced it and still doing the same thing. For the starter I dont know why that would be heating up.
Does your headers/exhaust run close to the starter?
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Old July 1st, 2013, 06:29 PM   #6
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Nope I have pulling headers on it that come straight out the hood.
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Old July 1st, 2013, 06:39 PM   #7
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Maybe the timing is too far advanced. Or a bad cable ? I had one that was corroded inside the insulation but looked new.
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Old July 1st, 2013, 06:44 PM   #8
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Ok, they are a small guage also and get really hot when I am cranking. Maybe I will get some bigger cables.
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Old July 1st, 2013, 07:04 PM   #9
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That's where I would start now that you say the cables are getting hot. Change them out for some 00 gauge cable and you should be good.
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Old July 1st, 2013, 09:34 PM   #10
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Even 00 gauge may be excessive. Just get some new cables from napa and check the difference.
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Old July 13th, 2013, 11:13 PM   #11
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I think its the timing chain. If its never been replaced, could be that. The older ford V8s had the lower gear coated with plastic which over time started to fall apart.
Had it happen to me times past when I was into early mustangs and pickups.
one way to check is to pop the distributor cap off and rotate the crank by hand.
No slop in the chain, rotor will turn as soon as you rotate the crank.
if there is slop/stretched chain, crank will rotate a little then the rotor will begin to turn with the crank....
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