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gas leak / long cranking

  • Thread starter Thread starter 67rcks
  • Start date Start date Oct 28, 2011
6

67rcks

Member
Feb 20, 2008
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Oct 28, 2011
#1
  • Oct 28, 2011
  • #1
It takes a long cranking to start the v8 if it has been parked for a long time (over 1-2 weeks). The fuel falls all the way to the gas tank. Is it typical for mustangs/carbed engines? Do I have to look for a leak or another solution (e.g. pump with manual prime - do you know of any?)
 

Realmongo

I prefer to be called "Evil Genius"
Founding Member
Oct 10, 2001
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Western Mass
Oct 28, 2011
#2
  • Oct 28, 2011
  • #2
That's pretty common. In addition to the 2 classics, I even have that problem with the 84 GT.
 

CarMichael Angelo

my rearend will smell so minty fresh,
15 Year Member
Nov 29, 1999
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Birmingham, al
Oct 28, 2011
#3
  • Oct 28, 2011
  • #3
67rcks said:
It takes a long cranking to start the v8 if it has been parked for a long time (over 1-2 weeks). The fuel falls all the way to the gas tank. Is it typical for mustangs/carbed engines? Do I have to look for a leak or another solution (e.g. pump with manual prime - do you know of any?)
Click to expand...

Gas should stay in the carb's float bowl from the last time it was ran.So unless all of the fuel is leaking from the bowl, (where it'd either be all over the engine, or down the throat of the carb) there should always be enough fuel there to get it to start like it was yesterday. The next time you let it sit for that long, take off the air cleaner and operate the throttle linkage while looking down the throat of the carb, ...you should see/smell the gas that comes out of the accelerator pump that primes the engine. You could get an electric pump, tie it into a switched circuit, add a 30 amp relay and block off the mechanical one. The pump reprimes everytime you turn the key.
 
6

67rcks

Member
Feb 20, 2008
373
0
17
Oct 28, 2011
#4
  • Oct 28, 2011
  • #4
fuel leaks back to the fuel tank
(not off the engine through carb floats etc - if that happened nobody would ever asked if it is ok!)
 

Realmongo

I prefer to be called "Evil Genius"
Founding Member
Oct 10, 2001
2,468
86
99
Western Mass
Oct 28, 2011
#5
  • Oct 28, 2011
  • #5
It's a combination of fuel settling back into the tank and what's in the fuel bowl evaporating during the 1-2 weeks of down time.
 
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