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 2Likes
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2
Post By vector1
12-03-2013, 04:06 PM
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CC Member
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Join Date: Aug 2010
Location: como,
IT
Cobra Make, Engine: cobra
Posts: 21
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Not Ranked
carburator fire
hi, i have this problem. my car run good, but last week i went to start and it didn't start. it make some fire from carburator and don't start. engine is 351w stroke 393 and caruburator is a demon. Regards
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12-03-2013, 04:25 PM
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CC Member
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Join Date: Dec 2004
Location: Kansas City,
KS
Cobra Make, Engine: jbl
Posts: 2,291
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Not Ranked
sometimes they'll do that, if you have the cleaner off make sure you have a shirt or rag handy to smother the fire. if it hasn't been started before, make sure you have enough ignition advance.
as long as it didn't look like this, you're still in the ballgame.
Video Working on an Engine Fail - YouTube |
12-04-2013, 07:17 AM
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Senior Club Cobra Member
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Join Date: Dec 2001
Location: Shasta Lake,
CA
Cobra Make, Engine:
Posts: 26,599
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Not Ranked
If it ran good last week, did you make any adjustments or do anything to the carburetor or timing? Did it backfire when the fire started?
Ron  |
12-04-2013, 08:57 AM
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CC Member
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Join Date: Jan 2005
Location: Rancho Cucamonga,
ca
Cobra Make, Engine: SPF 239
Posts: 820
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Not Ranked
You might want to check the ignition advance mechanism and make sure its not stuck in the advanced position
Jason
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12-07-2013, 09:25 AM
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CC Member
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Join Date: Aug 2010
Location: como,
IT
Cobra Make, Engine: cobra
Posts: 21
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Not Ranked
ok thank. this week i try to see the ignition.
ciao a tutti
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12-07-2013, 09:52 AM
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CC Member
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Join Date: Aug 2007
Location: Carlsbad,
Ca
Cobra Make, Engine: SPF 2932 with 438 Lykins Motorsports engine. Previous owner of FFR 5452.
Posts: 2,616
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Not Ranked
That's why they're called Demons. They breathe fire.
I know, I know, not helping.
__________________
Jim
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12-28-2013, 10:42 AM
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CC Member
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Join Date: Aug 2010
Location: como,
IT
Cobra Make, Engine: cobra
Posts: 21
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Not Ranked
hi guy,
today i repair my car. i change the demon carburator with holley carburator 750cfm. the car start but it is to early because the exhaust pipes became red. i try with stroboscopic gun and the engine run at 3000rpm about 18 degree, is correct?
thank a lot
Ciao da Norberto
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12-28-2013, 10:54 AM
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CC Member
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Join Date: Jan 2011
Cobra Make, Engine: AK427 BB Chevy454
Posts: 86
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Not Ranked
Hi Norberto, you should be between 36-40 deg at 3k rpm!
Mark
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AK427 Chevy 454ci 550BHP smokin! 
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12-28-2013, 11:06 AM
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CC Member
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Join Date: Aug 2010
Location: como,
IT
Cobra Make, Engine: cobra
Posts: 21
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Not Ranked
Hi Mark,
ok i can try. now with these carburator the minimu rpm is 800/900rpm. how many deg at 800rpm?
Norberto
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12-28-2013, 12:04 PM
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CC Member
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Join Date: Oct 2003
Posts: 4,078
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Between 12 and 14 degrees at about 1000 rpm.
__________________
Chas.
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12-30-2013, 10:48 AM
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CC Member
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Join Date: Aug 2010
Location: como,
IT
Cobra Make, Engine: cobra
Posts: 21
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Not Ranked
ok thanks a lot. i will can try
regards,
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12-30-2013, 11:14 AM
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Senior CC Premier Member
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Join Date: Nov 2004
Location: SoCal,
CA
Cobra Make, Engine: CSX #4xxx with CSX 482; David Kee Toploader
Posts: 3,574
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Not Ranked
Mechanical or vacuum advance on the distributor? Either way, sounds like something is stuck and not allowing it to advance as it should. The numbers in the posts above should be pretty close to what you want.
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All that's stopping you now Son, is blind-raging fear.......
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12-30-2013, 11:35 AM
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CC Member
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Join Date: Apr 2005
Location: Tucson,
AZ
Cobra Make, Engine:
Posts: 5,391
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Not Ranked
When I was a kid, I was at our local drag strip and saw a car catch fire. Flames were coming out of the hood scoop. One of the mechanics stuck his bare hand in the scoop to smother the carb. I guess his hand was less important than the carb.
His dedication kind of impressed me.
Larry
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