• Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

Fuel problem

  • Thread starter Thread starter raleighstang65
  • Start date Start date Jul 21, 2008

raleighstang65

Member
Jan 19, 2007
170
0
16
Wake Forest, NC
Jul 21, 2008
#1
  • Jul 21, 2008
  • #1
Was driving last Friday and pulled away from a stop sign when the engine started chugging and bogged down (ran fine up to this point). Pulled over and put it in park, started idling ok again but when I turned around to head back home it started chugging again, no matter how much gas I gave it it wanted to die. Luckily I was only a few blocks from home when it finally died and I couldn't get it to start again.
Basically it looks like the carb is not getting any fuel at all. With the choke wide open and manually working the throttle, I don't see any fuel spraying out of the jets. I was able to spray starter fluid in there and got it to start off that but dies when it burns all the fluid.
The fuel pump is new, and I have a new fuel filter between the pump and the carb. My fuel gauge isn't working so I double checked the tank with a string and nut to make sure I have gas in the tank (high tech I know!).
Car has been running great lately, no signs of anything going wrong.
Would it be normal if the fuel filter is clogged to just completely stop the flow of fuel? I know there is a little bit of crud in the gas tank, when I pulled the sender last year there was a little bit of junk that drained out but not bad.
What do you guys think? Fuel filter? Fuel pump? Something else entirely? If it's the filter should I think about replacing the gas tank since it clogged up a new filter after maybe 100 miles of driving?
 
D

D.Hearne

New Member
Sep 29, 2000
11,730
6
0
south louisiana
Jul 21, 2008
#2
  • Jul 21, 2008
  • #2
Change the fuel filter first, bet it's plugged with red mud.(rust)
 
S

STSFCTN67

Member
Feb 5, 2003
450
0
16
Denver, CO
Jul 21, 2008
#3
  • Jul 21, 2008
  • #3
yes, the filter can clog completely and kill the engine. It is worth it to clean out the tank. Mine was full of newspapers, rocks, and papertowels when I purhcased the car 6 years ago. Drain the tank clean it out and blow your fileters out.
 

rbohm

Founding Member
Apr 12, 2002
6,698
550
204
tucson,az
Jul 21, 2008
#4
  • Jul 21, 2008
  • #4
start with the easy stuff;

give the float bowl a rap with a screwdriver near the fuel inlet as you might have a stuck float.

next replace the fuel filter, it probably needs it anyway.

third check fuel pump output before the fuel filter, it is still possible to have a bad pump diaphram.

fourth check your fuel lines for proximity to high heat sources like exhaust pipes. you may be developing a vapor lock problem.

fifth check your fuel lines for clogging as you may have one either partially of fully clogged.
 

jlangholzj

Mustang Master
Oct 23, 2006
248
31
93
MI
Jul 21, 2008
#5
  • Jul 21, 2008
  • #5
rbohm said:
start with the easy stuff;

give the float bowl a rap with a screwdriver near the fuel inlet as you might have a stuck float.

next replace the fuel filter, it probably needs it anyway.

third check fuel pump output before the fuel filter, it is still possible to have a bad pump diaphram.

fourth check your fuel lines for proximity to high heat sources like exhaust pipes. you may be developing a vapor lock problem.

fifth check your fuel lines for clogging as you may have one either partially of fully clogged.
Click to expand...



+1 on that,

one more thing tho, if that still weilds nothing, pull off the pump and look at your fuel pump excentric, after i put my cam in, mine came loose and I had the same problem you did, no fuel whatsoever.


good luck!

-john
 

raleighstang65

Member
Jan 19, 2007
170
0
16
Wake Forest, NC
Jul 22, 2008
#6
  • Jul 22, 2008
  • #6
Thanks guys! Will keep you posted!
 
You must log in or register to reply here.

Similar threads

E
Pats antiitheft-bypass (ez fix)
  • ETindall
  • May 19, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
0
Views
59
1996 - 2004 SN95 Mustang -General/Talk- May 19, 2026
ETindall
E
S
Need help asap
  • shaggyman65
  • Dec 24, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
2
Views
262
1996 - 2004 SN95 Mustang -General/Talk- Dec 24, 2025
shaggyman65
S
M
01 mustang 3.8 fuel pressure issue
  • Mhaley2006
  • May 29, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
4
Views
219
1996 - 2004 SN95 Mustang -General/Talk- Sunday at 2:52 PM
JohnKay
J
L
1997 V6 Starting issue
  • leanzik04
  • Mar 20, 2026
  • SN95 V6 Mustang Tech
Replies
3
Views
253
SN95 V6 Mustang Tech Mar 20, 2026
Noobz347
F
2004 Mustang GT – Fuel Pump Not Priming
  • Fayio
  • Apr 22, 2026
  • SN95 4.6L Mustang Tech
Replies
7
Views
327
SN95 4.6L Mustang Tech Apr 27, 2026
n0v8or
N
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?