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Author Topic: carb fire  (Read 6656 times)

Offline 1984gmchighserria

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carb fire
« on: January 31, 2010, 07:52:25 am »
What causes a carb fire after the motor shut off?
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Offline Josh454

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Re: carb fire
« Reply #1 on: January 31, 2010, 07:59:03 am »

Your float could have stuck.  Was it a Q-Jet?
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Offline 1984gmchighserria

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Re: carb fire
« Reply #2 on: January 31, 2010, 08:02:54 am »
no its an edlebrock and i am not really familiar with carbs
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Offline VileZambonie

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Re: carb fire
« Reply #3 on: January 31, 2010, 08:30:03 am »
You need a source of ignition...is it backfiring through the intake?
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Offline 1984gmchighserria

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Re: carb fire
« Reply #4 on: January 31, 2010, 08:52:55 am »
yea it does back but only cus of bad gas or so i was told
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Offline VileZambonie

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Re: carb fire
« Reply #5 on: January 31, 2010, 08:54:26 am »
Check your ignition timing, idle speed and check for tune up first.
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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline Irish_Alley

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Re: carb fire
« Reply #6 on: February 01, 2010, 03:31:45 am »
i would imagine it would be your timing would be too advanced. how often does it do this?
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Offline 1984gmchighserria

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Re: carb fire
« Reply #7 on: February 01, 2010, 04:46:27 pm »
it does it very time i turned the motor off.
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Offline Irish_Alley

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Re: carb fire
« Reply #8 on: February 02, 2010, 05:30:12 am »
how does it run when your driving it?
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If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline 1984gmchighserria

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Re: carb fire
« Reply #9 on: February 02, 2010, 09:26:28 pm »
it takes a minute to warm up some times it will stall then once its warmed up itll back fire now and then i was told it was bad gas
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Offline Irish_Alley

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Re: carb fire
« Reply #10 on: February 03, 2010, 02:02:40 am »
backfire out the carb or tail pipe?
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If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline 1984gmchighserria

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Re: carb fire
« Reply #11 on: February 03, 2010, 06:28:56 am »
the left tail pipe only the right side doesnt back fire
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Offline team39763

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Re: carb fire
« Reply #12 on: February 03, 2010, 02:48:34 pm »
My neighbor just went through a similar problem with his 81.  His would run like crap, and after a good warm-up it would idle decent.  We tried an edelbrock, holley, and a demon.  We settled for the 850 Demon since I knew more about it than the Edelbrock.  It would respond to revving 7 out of 10 times.  We took it for a drive and as soon as we came to a stop it stalled and the carb caught on fire.  It did this about 5 times in the one spot while trying to get the truck turned on so we could return to the garage.  A few days later we learned that another neighbor had installed the plug wires wrong(all one place over on the dist.) and he advanced the timing way too much.  Once they fixed that, the truck ran good.
« Last Edit: February 04, 2010, 06:16:36 pm by team39763 »
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Offline Irish_Alley

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Re: carb fire
« Reply #13 on: February 04, 2010, 01:25:46 pm »
x2 on timing it sound like it too advanced the pop out the pipe i have that i just call it a randome pop cause its not something that happends all the time i don't know what causes it
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If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline 1984gmchighserria

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Re: carb fire
« Reply #14 on: February 04, 2010, 09:25:49 pm »
I retarded  the timing and the fire went away but it still pops now and then. i also got and exhaust leak i think or vacumm lines one of the two.
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