vapor lock help!!!
- Thread starter ponyboy33
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hw'fihw3rifh
there is a spacer and it is a aluminum intake. also it does it off and on and seems to right its self. frustrating! i have no idea what it could be. changed fuel filter. blew out gas lines. it isnt getting real close to hot objects (gas line) adjusted carb. and timing. it will randomly start doing it and randomly stop.
there is a spacer and it is a aluminum intake. also it does it off and on and seems to right its self. frustrating! i have no idea what it could be. changed fuel filter. blew out gas lines. it isnt getting real close to hot objects (gas line) adjusted carb. and timing. it will randomly start doing it and randomly stop.
the hose from the tank to the steel feed line is NOT pressurized, and just because there is no gas leaking, doesnt mean that air is not being drawn into the system. as i have said i went through this with my 77 olds. no gas was leaking, but the hose was indeed in bad enough shape to allow air to be drawn into the system. as for the sock, just because you blow out the hose into the tank doesnt mean the sock isnt going to pick the junk back up when the pump start to draw a vacuum again. you have to pull the sending unit and check the sock to be sure. you are making false assumptions here.
i really gotta fix this before this weekend 
can anyone help? any ideas? thoughts? when it first acts up it hesitates slightly and if i continue to drive it after it acts up it just gets worse and worse till it constantly does it. u can maintain the same speed you were driving but it wont really let you accelerate through it. it will sometimes just right its self within a minute or so. i am just stumped. 
can anyone help? any ideas? thoughts? when it first acts up it hesitates slightly and if i continue to drive it after it acts up it just gets worse and worse till it constantly does it. u can maintain the same speed you were driving but it wont really let you accelerate through it. it will sometimes just right its self within a minute or so. i am just stumped. 
pabear89
Active Member
Check or replace the 3 rubber fuel lines to insure they are not cracked or loose clamps allowing air in.
1. At the tank
2. Under the drivers side floor
3. From the fuel line to pump
If they are all new, its possable that the tank screen s collecting enough crap to starve the flow to the carb.
1. At the tank
2. Under the drivers side floor
3. From the fuel line to pump
If they are all new, its possable that the tank screen s collecting enough crap to starve the flow to the carb.
take a clean gas can with about 2 gallons of gas. and just have your pump pull from that. if it will do it at idle and at least under a load. See if it is better or same. If the same well its not from the tank up to the pump. Could be pump, could be filter in the carb, could be the carb. or ignition. If it does not act up then you have to start at the sender and work your way forward.
well the accelerator pump is not working in the carburator. would that cause the problem? would rebuilding it fix that problem?
I dont think its really the pump. You would have a reall hard time getting the engine started without it, The pump may not work right if the fuel bowl is empty or partially empty. I am assuming you have a stock carb. You should really take a look and that small piece of screen under the needle seat, if its clogged it will cause an empty bowl.
Platonic Solid
Founding Member
My Vote is your gas is going/gone bad and/or you got crud in your tank, but you don't seem to want to hear that.
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