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09-03-2014, 09:24 AM
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CC Member
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Join Date: May 2014
Cobra Make, Engine:
Posts: 41
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Not Ranked
starting a warm 351 , crank won't start
i drive it 3-4 miles shut it off & go to start it 10 min. later just crank's wont fire , if i let it sit for 20 min. or so it starts & i can shut it off & re starts . 3 times this wk. a bit scary ! any idea ? it is a 351 W with mallory dist. & jacobs ing.
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09-03-2014, 12:14 PM
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CC Member
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Join Date: May 2006
Location: Portland,
OR
Cobra Make, Engine: ERA FIA, 1964 289->Webers
Posts: 3,689
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Not Ranked
Could be the starter getting too hot. When it cools a bit, it spins. Heard of this a number of times. Often when the exhaust is too close to the starter. If this is the case, it may be that the starter has air passing over it when driving, keeping it a bit cooler.
__________________
ERA FIA 2088
Last edited by *13*; 09-03-2014 at 12:16 PM..
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09-03-2014, 12:44 PM
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CC Member
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Join Date: Sep 2013
Location: Sparta,
nj
Cobra Make, Engine: Backdraft 1048
Posts: 270
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Not Ranked
If it cranks it's not a starter issue maybe it's the coil so I would check for spark when it occurs.
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Gary
Backdraft 1048
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09-03-2014, 12:53 PM
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CC Member
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Join Date: May 2001
Location: California,
Ca
Cobra Make, Engine: NAF 289 Slabside Early Comp Car with 289 Webers and all the goodies. Cancelling the efforts of several Priuses
Posts: 6,592
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Not Ranked
Look at the field coil/light emitting diode module inside the distributor.
Most likely the above, electronics do not like heat.
__________________
Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way 
Last edited by Rick Parker; 09-27-2014 at 03:05 PM..
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09-03-2014, 04:22 PM
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CC Member
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Join Date: May 2014
Cobra Make, Engine:
Posts: 41
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Not Ranked
it crank's no spark !
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09-03-2014, 06:28 PM
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Senior Club Cobra Member
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Join Date: May 2001
Location: Florence,
AL
Cobra Make, Engine: RCR GT 40 & 1966 Fairlane 390 5 speed
Posts: 4,511
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Not Ranked
no spark, I would look at the coil.
could be fuel filter. Maybe fuel pump.
__________________
''Life's tough.....it's even tougher if you're stupid.'' ~ John Wayne
"Happiness Is A Belt-Fed Weapon"
life's goal should be; "to be smarter than inanimate objects"
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09-26-2014, 09:20 PM
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CC Member
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Join Date: Jun 2005
Location: Belleville, 15 miles East of St Louis MO,
IL
Cobra Make, Engine: Classic 427, I purchased it May 2005, the kit was bought in 1991. I'm not sure when it was completed! Installed GMPP Connect & Cruise 376/525 with T-56 S/M 3.55 gears about 2 years ago! 1/4 miles is with old setup!
Posts: 281
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Not Ranked
Mallory Dist for sure unless your spark box is to near heat! The GMPP 572/620 I had ate MSD modules like candy! When they went bad it WOULD NOT start when hot, let it cool and it would fire right up. Got rid of the distributor module and put an old 6AL in the glove box and never had another problem!
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Al
I want to do right, Just not right NOW!
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09-26-2014, 11:39 PM
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CC Member
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Join Date: Apr 2012
Location: Bay Area (Peninsula),
CA
Cobra Make, Engine: ERA 427, 427/487 side-oiler
Posts: 1,248
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Not Ranked
I had this problem as well when I first got my Cobra on the road. It turned out to be heat soak boiling the fuel in the carb and lines and likely creating vapor lock. The solution was to add a 1/4" phenolic spacer between the carb and intake, and also to insulate the fuel lines with fiberglass/reflective wrap from McMaster-Carr. Solved the problem.
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09-27-2014, 12:21 AM
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CC Member
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Join Date: Jun 2005
Location: Belleville, 15 miles East of St Louis MO,
IL
Cobra Make, Engine: Classic 427, I purchased it May 2005, the kit was bought in 1991. I'm not sure when it was completed! Installed GMPP Connect & Cruise 376/525 with T-56 S/M 3.55 gears about 2 years ago! 1/4 miles is with old setup!
Posts: 281
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Not Ranked
Simple test fuel or spark, pour a cap of fuel in the carb! Or move the throttle and see if it's getting a shot of fuel, if it's getting fuel and don't start it's spark!
:-)
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Al
I want to do right, Just not right NOW!
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09-27-2014, 02:12 AM
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CC Member
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Join Date: Jul 2005
Location: Carpentersville,IL & Maricopa,,
AZ
Cobra Make, Engine: ACE, 351W, 3550 Tremec, Raging(?) Red W/ White Stripe.
Posts: 2,082
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Not Ranked
In his post #5, he already said, " cranks, no spark"!!! 
Ralph 
__________________
SPEED WAS HIGH - WEATHER WAS NOT - TIRES WERE WET - X MARKS THE SPOT
Burma Shave 
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09-27-2014, 05:55 AM
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CC Member
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Join Date: Jun 2005
Location: Belleville, 15 miles East of St Louis MO,
IL
Cobra Make, Engine: Classic 427, I purchased it May 2005, the kit was bought in 1991. I'm not sure when it was completed! Installed GMPP Connect & Cruise 376/525 with T-56 S/M 3.55 gears about 2 years ago! 1/4 miles is with old setup!
Posts: 281
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Not Ranked
^^Yes he did!^^
I guess I was having a "senior moment" on that second post? 
DISTRIBUTOR MODULE!
__________________
Al
I want to do right, Just not right NOW!
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09-27-2014, 03:29 PM
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CC Member
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Join Date: Jul 2014
Location: Youngstown,
Oh
Cobra Make, Engine: Classic427 351w
Posts: 80
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Not Ranked
Quote:
Originally Posted by bigh
i drive it 3-4 miles shut it off & go to start it 10 min. later just crank's wont fire , if i let it sit for 20 min. or so it starts & i can shut it off & re starts . 3 times this wk. a bit scary ! any idea ? it is a 351 W with mallory dist. & jacobs ing.
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Possibly carb flooding? Try holding the gas pedal to the floor while cranking. Old school start up on carbureted engines. |
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