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Help needed with Mystery problem

  • Thread starter Thread starter cardude
  • Start date Start date Nov 13, 2011

cardude

Founding Member
Apr 20, 2000
221
0
0
Portland, OR
Nov 13, 2011
#1
  • Nov 13, 2011
  • #1
I am having a problem where when my 66 mustang is warm and has been running a little while it start bogging down like a fuel or eletrical issue andI need some help.

background:
car has 302 V8 (about 600 miles on rebuild) 3 spd manual
Fuel side: new fuel tank, fuel line (down passenger side), summit 14psi electric pump at the tank, edelbrock 600CFM carb, edelbrock RPM intake, comp cams big cam (dont have specs). all new
Electrical: 720 CC battery, power master 130A one wire (volt reg disconnected), 8mm wires, (tried three different dizzies) currently stock with crane XR-i module. all new

Symptoms:once car has been run for a while (warm) it starts to bog down and dies, kind of a waaawaaaa like its lacking fuel or spark.... the strange thing is it will do it for a while and sometimes will go away after a long struggle trying to limp the car to somewhere safe.

the car runs great cold, and I have changed everything minus the ignition switch. this has been plaguing me for years now and I need to start driving the car as a daily driver.

help me please
 
2

2+2GT

10 Year Member
Apr 25, 2009
3,333
10
79
Southeastern Pennsylvania
Nov 13, 2011
#2
  • Nov 13, 2011
  • #2
I'm surprised you're getting away with that fuel pump, that's about twice the pressure the Edelbrock can handle.

Perhaps your coil is not in good condition. When coils begin to deteriorate, they work poorly when hot.
 

S-Car-Go

Member
Mar 25, 2003
332
0
16
San Jose, CA
Nov 13, 2011
#3
  • Nov 13, 2011
  • #3
+1 for what 2+2 GT said.

You need to regulate down to ~6 psi.
 

PoppyMod

Member
Jun 27, 2010
617
6
19
Severna Park, MD
Nov 13, 2011
#4
  • Nov 13, 2011
  • #4
+3 for the reduction to a 6 pounder PSI. I expect, it's blowing the floats, flooding etc.
 
S

soutex

New Member
Aug 27, 2011
10
0
1
Nov 13, 2011
#5
  • Nov 13, 2011
  • #5
I have it on good authority that 14 psi will bend the floats. Need to get it down to 5-6 psi and hopefully no damage has been done.
 

rbohm

Founding Member
Apr 12, 2002
6,698
550
204
tucson,az
Nov 14, 2011
#6
  • Nov 14, 2011
  • #6
i fully agree with lowering the fuel pressure. for the edelbrock it needs to be below 6psi, in fact it should be between 4.5-5.5psi ideally.

as to the ignition coil, it could be overheating, and when that happens it will cause issues like the one you have now.
 
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