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Question on Small Block.. Weird Problem..
#1688684
10/21/14 06:17 PM
10/21/14 06:17 PM
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Joined: Feb 2008
Posts: 2,648 GA
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OP
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Car is a 70 Challenger with a 360 4V. Has new tank all new lines new filter new holley 600. You can crank it cold and it runs great until it warms up. Once it gets to operating temp it acts like it runs out of gas and shuts off.
I can buy another fuel pump for it but I am wondering why it works fine cold and at temp it quits? Or is it something else? I am wondering what to look at next. I thought taking the non vented cap off would help but it doesn't.
2011 RAM3500
1967 Fastback Barracuda with some go fast goodies.
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Re: Question on Small Block.. Weird Problem..
[Re: Boosted]
#1688687
10/21/14 07:32 PM
10/21/14 07:32 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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I'd idle it in your driveway in drive with ebrake on (watch the temp) till it stalls & with a helper to crank it: IMMEDIATELY (1) see if the coil wire has spark and (2) if the AP still has a stream of gas. Holler back
live every 24 hour block of time like it's your last day on earth
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Re: Question on Small Block.. Weird Problem..
[Re: dogdays]
#1688689
10/21/14 08:22 PM
10/21/14 08:22 PM
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Joined: Feb 2008
Posts: 2,648 GA
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I went out today and cranked it up. 79 degrees here. Let it sit in the driveway for about 3 minutes and started idling down until it shut off.
Tried to crank it and it acted like it wanted to and nope it would not. I let it sit for about 30 minutes and it fired right back up and ran fine again.But I only ran it long enough to get it back in the shop.
Here is a photo of the motor...
2011 RAM3500
1967 Fastback Barracuda with some go fast goodies.
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Re: Question on Small Block.. Weird Problem..
[Re: Boosted]
#1688691
10/21/14 08:41 PM
10/21/14 08:41 PM
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Joined: Jun 2005
Posts: 5,107 Western Md.
skicker
"The Champ"
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"The Champ"
Joined: Jun 2005
Posts: 5,107
Western Md.
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There was something posted a while back about mounting the coil and that some coils were not designed to be mounted certain ways. I see yours is standing up, I'm not positive but I'm thinking some were maybe designed to not be mounted laying down. Regardless I think I would repeat the cycle with starting it and letting it warm up till it shuts off. If it doesn't re-fire swap the coil out and try it asap. Its something small and stupid, your just going to have to swap parts out till you find it. Being that its a Holley double check the float levels to make sure its not dribbling fuel out of the squirters after idling for a period of time.
...FAFO...
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Re: Question on Small Block.. Weird Problem..
[Re: skicker]
#1688692
10/21/14 09:13 PM
10/21/14 09:13 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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When it stalls pop the gas cap and see if it's got vacuum. Use an IR gun to see what the coil temps are. Same with fuel line temps. http://www.harborfreight.com/infrared-thermometer-93984.html
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Question on Small Block.. Weird Problem..
[Re: Supercuda]
#1688693
10/21/14 09:46 PM
10/21/14 09:46 PM
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Joined: Feb 2008
Posts: 2,648 GA
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I am running it without the gas cap on and it is doing it. How hot is to hot for the coil and fuel lines? I have a temp gun..
2011 RAM3500
1967 Fastback Barracuda with some go fast goodies.
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Re: Question on Small Block.. Weird Problem..
[Re: Boosted]
#1688694
10/22/14 12:57 AM
10/22/14 12:57 AM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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Gas starts to boil around 180 degrees F. Less than that for both, much less if you can swing it.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Question on Small Block.. Weird Problem..
[Re: Supercuda]
#1688695
10/22/14 10:07 AM
10/22/14 10:07 AM
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Joined: Feb 2008
Posts: 2,648 GA
Boosted
OP
master
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OP
master
Joined: Feb 2008
Posts: 2,648
GA
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I am going to swap the coil out today for a new one. I know it is getting gas as after it sit for a 30 minutes it took just a a pump of the pedal to crank it back up. Fired right up.. So it did not run out of fuel from the pump and it has a 1/2 tank.
2011 RAM3500
1967 Fastback Barracuda with some go fast goodies.
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Re: Question on Small Block.. Weird Problem..
[Re: Challenger 1]
#1688698
10/22/14 09:54 PM
10/22/14 09:54 PM
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Joined: Feb 2008
Posts: 2,648 GA
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Coil fixed it tonight. Ran for a long time and never shut off. And yes it was an accel coil.. A very old one.lol
2011 RAM3500
1967 Fastback Barracuda with some go fast goodies.
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Re: Question on Small Block.. Weird Problem..
[Re: Boosted]
#1688699
10/23/14 10:15 AM
10/23/14 10:15 AM
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Joined: May 2003
Posts: 15,487 Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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Quote:
Coil fixed it tonight. Ran for a long time and never shut off. And yes it was an accel coil.. A very old one.lol
gald it fixed it. was it a points coil?
so now you got a antique coil for the
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Re: Question on Small Block.. Weird Problem..
[Re: scratchnfotraction]
#1688700
10/23/14 11:07 PM
10/23/14 11:07 PM
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Joined: Feb 2008
Posts: 2,648 GA
Boosted
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OP
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I have not looked it up yet.. I am going to get the car out and drive it some this weekend.. It is finally getting driving weather down here..
2011 RAM3500
1967 Fastback Barracuda with some go fast goodies.
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