68 Mustang, need some help
06-13-2018, 12:36 PM
#1
Thread Starter
Join Date: Dec 2017
Location: Missouri
Posts: 6
68 Mustang, need some help
I've got a 68 convertible that was my dad's baby. When he passed away I brought the car home from out state. It had and still has issues with the brakes so I had it in my garage for almost a year and started it up just fine once in a while until last fall when it stopped starting out of nowhere.
Its not getting fuel to the carb, I've switched out the pump, blown out the lines, changed the filter, tried running from an external fuel source, nothing has worked. Can anyone give me a new direction to try to get it running? Any help is appreciated.
Its not getting fuel to the carb, I've switched out the pump, blown out the lines, changed the filter, tried running from an external fuel source, nothing has worked. Can anyone give me a new direction to try to get it running? Any help is appreciated.
imp
06-14-2018, 09:14 AM
#4
2nd Gear Member
Join Date: Apr 2014
Location: PA
Posts: 424
What do you mean you ran from an external fuel source and still don't have fuel in the carb? A piece of hose from a gas can connected to the carb input doesn't fill the carb? Then the float is stuck or the float valve is sealed to the inlet.
06-14-2018, 02:22 PM
#5
Banned
Join Date: Jan 2018
Location: Pennsylvania
Posts: 2,327
The fuel jets in the carb could be clogged. It's not funny at all, if the carb is dry.
Before cranking, put the fuel pedal to the floor, this will open up the secondaries,
then crank, wait 2 seconds, and then pump the fuel pedal to and from the floor, for
another a five or so seconds. Stop cranking, now, go see if any fuel got into the carb...
IF the float stuck upward, full bowl, then the fuel is cut off from the carb. Usually
they stick downward, and allow too much fuel over that much time of sitting.
Personally, I never had one stick closed. Even on my motorcycles, they stuck
down, and fuel ran out the over-flow hoses...
Before cranking, put the fuel pedal to the floor, this will open up the secondaries,
then crank, wait 2 seconds, and then pump the fuel pedal to and from the floor, for
another a five or so seconds. Stop cranking, now, go see if any fuel got into the carb...
IF the float stuck upward, full bowl, then the fuel is cut off from the carb. Usually
they stick downward, and allow too much fuel over that much time of sitting.
Personally, I never had one stick closed. Even on my motorcycles, they stuck
down, and fuel ran out the over-flow hoses...
06-14-2018, 06:00 PM
#6
Thread Starter
Join Date: Dec 2017
Location: Missouri
Posts: 6
I had the gas running from a can to the pump.
06-14-2018, 06:02 PM
#7
Thread Starter
Join Date: Dec 2017
Location: Missouri
Posts: 6
The fuel jets in the carb could be clogged. It's not funny at all, if the carb is dry.
Before cranking, put the fuel pedal to the floor, this will open up the secondaries,
then crank, wait 2 seconds, and then pump the fuel pedal to and from the floor, for
another a five or so seconds. Stop cranking, now, go see if any fuel got into the carb...
IF the float stuck upward, full bowl, then the fuel is cut off from the carb. Usually
they stick downward, and allow too much fuel over that much time of sitting.
Personally, I never had one stick closed. Even on my motorcycles, they stuck
down, and fuel ran out the over-flow hoses...
Before cranking, put the fuel pedal to the floor, this will open up the secondaries,
then crank, wait 2 seconds, and then pump the fuel pedal to and from the floor, for
another a five or so seconds. Stop cranking, now, go see if any fuel got into the carb...
IF the float stuck upward, full bowl, then the fuel is cut off from the carb. Usually
they stick downward, and allow too much fuel over that much time of sitting.
Personally, I never had one stick closed. Even on my motorcycles, they stuck
down, and fuel ran out the over-flow hoses...
06-20-2018, 08:39 AM
#8
2nd Gear Member
Join Date: Apr 2014
Location: PA
Posts: 424
If you did not get fuel out of the fuel pump, it ain't working. Mechanical fuel pump or electric? You do not need the fuel hose connected to the carb to get fuel out of the pump.
Mechanical pump: Diaphragm shot, fuel line plugged, fuel tank empty, fuel tank plugged
Electrical: check pump is running when ignition is on. if so pump bad and all of the above. If not running check wiring and cut-off if it has one. If it does not have a cutoff, when the pump is fixed insure to install one.
Many times I have rapped the carb on all sorts of equipment to free up a stuck float needle. Especially the rubber tipped ones which swell and stick in the orifice and especially if sitting for years.
Mechanical pump: Diaphragm shot, fuel line plugged, fuel tank empty, fuel tank plugged
Electrical: check pump is running when ignition is on. if so pump bad and all of the above. If not running check wiring and cut-off if it has one. If it does not have a cutoff, when the pump is fixed insure to install one.
Many times I have rapped the carb on all sorts of equipment to free up a stuck float needle. Especially the rubber tipped ones which swell and stick in the orifice and especially if sitting for years.
06-23-2018, 05:24 AM
#9
1st Gear Member
Join Date: Feb 2018
Location: Massachusetts
Posts: 61
take off the fuel line at the pump that goes back to the tank, blow threw it and have someone listen for bubbles in the tank, if no bubbles, it's a clogged line or a hole in the line or sender pickup. If you hear bubbles, see if you can suck fuel threw the line. If you can hook it back to the pump, take off the line that goes to the carb and crank the engine. You should get a real good flow of fuel. if not the pump is NG. If you do it probably has a stuck needle in the carb.