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Re: Vapor Lock [Re: cornet684me] #837020
10/27/10 12:53 AM
10/27/10 12:53 AM
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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RapidRobert Offline
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Lincoln Nebraska
Quote:

do you think this gas is the problem?


YES but do finish checking the line back to the tank since your already partway into it there. If the line is good get the tank empty then add 5 gallons of non gasahol pump gas or even several gallons of race gas. we're down to (I hope) the E10 or the rear line/sender. EDIT I may have spoke too soon as if it is vapor locking due to E10 it is happening so fast. Do continue the test where you are at at the pump inlet w the jar of gas & let it get good & hot as that's where it is going to be heated is up front which'll make the E10 act up if it is the prob then move the jar to the rear. I'll see you tomorrow.

Last edited by RapidRobert; 10/27/10 01:02 AM.

live every 24 hour block of time like it's your last day on earth
Re: Vapor Lock [Re: RapidRobert] #837021
10/27/10 01:02 AM
10/27/10 01:02 AM
Joined: Dec 2007
Posts: 1,639
Brandon, Ms
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cornet684me Offline OP
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Brandon, Ms
wow Robert, i have heard all the talk about the gas, and i will go get 5 gallons of real gas, i will test the hard line etc. tommorrow and post my findings

thanks

Re: Vapor Lock [Re: RapidRobert] #837022
10/27/10 01:24 AM
10/27/10 01:24 AM
Joined: Feb 2005
Posts: 5,221
Branson, Mo.
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joedust451 Offline
super gas
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Branson, Mo.
I have to disagree on the ethanol theory being the problem in this case, ALL of our station have ethanol in it & my car doesn't starve for gas at all, what it does do is after running a good 10-15 minutes around town is the pressure on my gauge will start flucuating (drifting) around, but then it'll return, is it the GAS, IDK, but even under these situations it'll run out fine under WOT through all gears.

I think his pump is either "sucking air" somewhere or theres a restriction, OR the pump rod is mushroomed because he mentioned he never took it out & looked (unless i missed something).

Another thing i thought of & it happened to me is, the short rubber hose that goes from the tank sending unit too the hardline was kinked, had another car that the hose was so soft the suction from the mech. pump was making it callapse. These are things to check. I'll bet anything "once" you find the problem its going to end up being something you over-looked & simple.

Its not rocket sience, you have a clear path for fluid to flow through, then you have a pump that sucks & pushes the fluid, pretty simple really.

Check the hard line & let us know what you find.

1 more thing, did you ever try running it without the gas cap on???

Last edited by joedust451; 10/27/10 01:25 AM.

75 Duster, 451 10.87 @ 123.58 NA 97 Z28 6sp., 12.01 @ 115 on a 100 shot 71 Swinger. 360 magnum. 12.58 @ 105 78 cutlass, 469 BBC. 12.70 @ 108 on street tires. http://www.youtube.com/watch?v=Z2kqNmMfheU
Re: Vapor Lock [Re: joedust451] #837023
10/27/10 07:57 AM
10/27/10 07:57 AM
Joined: Nov 2004
Posts: 843
Suffolk,VA
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ireland383 Offline
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Suffolk,VA
Pull the rod out already!

Re: Vapor Lock [Re: cornet684me] #837024
10/27/10 09:13 AM
10/27/10 09:13 AM
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1 Offline
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Cincinnati, Ohio
Quote:

here is pic of the sending unit, the inter gas tank is perfect, no rust and no dirt, no need to replace the tank,




Did you blow thru the pickup with your mouth to see if that dirty screen is open. There white in color when there new.

Re: Vapor Lock [Re: joedust451] #837025
10/27/10 09:31 AM
10/27/10 09:31 AM
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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RapidRobert Offline
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Quote:

I'll bet anything "once" you find the problem its going to end up being something you over-looked & simple.


Yeah we're gonna be shakin our heads when we find it, k.i.s.s. rarely fails. Plus Randy's neighbor lady wont know how to handle all the peace & quiet.


live every 24 hour block of time like it's your last day on earth
Re: Vapor Lock [Re: RapidRobert] #837026
10/27/10 10:31 AM
10/27/10 10:31 AM
Joined: Feb 2005
Posts: 5,221
Branson, Mo.
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joedust451 Offline
super gas
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Branson, Mo.
Quote:

Quote:

I'll bet anything "once" you find the problem its going to end up being something you over-looked & simple.


Yeah we're gonna be shakin our heads when we find it, k.i.s.s. rarely fails. Plus Randy's neighbor lady wont know how to handle all the peace & quiet.






75 Duster, 451 10.87 @ 123.58 NA 97 Z28 6sp., 12.01 @ 115 on a 100 shot 71 Swinger. 360 magnum. 12.58 @ 105 78 cutlass, 469 BBC. 12.70 @ 108 on street tires. http://www.youtube.com/watch?v=Z2kqNmMfheU
Re: Vapor Lock [Re: cornet684me] #837027
10/27/10 11:04 AM
10/27/10 11:04 AM
Joined: Jan 2003
Posts: 2,072
Cambridge, Ontario, Canada
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CUDAJAS Offline
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Cambridge, Ontario, Canada
Quote:

heres the new set up on carb




I know I am jumping in late here, but that line on the carb looks like it is closed up quite a bit...this might be contributing to the problem, not allowing enough gas to get to the carb.

just a thought.

Re: Vapor Lock [Re: CUDAJAS] #837028
10/27/10 11:38 AM
10/27/10 11:38 AM
Joined: Jan 2010
Posts: 329
Orange Park, FL
MRHWS Offline
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Orange Park, FL
You stated you have a 3/8 rubber line to the carb, but do you have a 3/8 sender and 3/8 metal fuel line?


1973 Charger SE 1974 Charger Rallye 440 Aztec 2008 Charger SRT8
Re: Vapor Lock [Re: ireland383] #837029
10/27/10 01:40 PM
10/27/10 01:40 PM
Joined: May 2006
Posts: 1,374
North Central Indiana
C-Tech Offline
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North Central Indiana
Quote:

Pull the rod out already!




Feeding your fuel pump from an external source shoud have eliminated the lines tank ect. the run time is not long enough for vapor lock it sounds too me like a fuel delivery issue.


Kevin
Re: Vapor Lock [Re: cornet684me] #837030
10/27/10 01:41 PM
10/27/10 01:41 PM
Joined: May 2006
Posts: 1,374
North Central Indiana
C-Tech Offline
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North Central Indiana
Quote:

i checked the rod when i put the new pump on, it did look mushroomed, however i did not take it out and measure it


If it looked mushroomed its more then likley bad


Kevin
Re: Vapor Lock [Re: cornet684me] #837031
10/27/10 04:16 PM
10/27/10 04:16 PM
Joined: Jan 2003
Posts: 75,005
U.S.S.A.
JohnRR Offline
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U.S.S.A.
Quote:

i checked the rod when i put the new pump on, it did look mushroomed, however i did not take it out and measure it





The end of the rod that goes bad you can not see unless you pull it from the block or pull out the cam and push it up .


Re: Vapor Lock [Re: C-Tech] #837032
10/27/10 09:38 PM
10/27/10 09:38 PM
Joined: Dec 2007
Posts: 1,639
Brandon, Ms
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cornet684me Offline OP
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sorry, i meant to say, it did not look mushroomed, it looked fine, sorry for the confusion

Re: Vapor Lock [Re: RapidRobert] #837033
10/27/10 09:43 PM
10/27/10 09:43 PM
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Brandon, Ms
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cornet684me Offline OP
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okay, i think i am getting close, i have the tank out, everything looks fine, the gas nice and pretty color, the sending unit is fine, i had disconnected the line coming from the tank to test the fuel pump yesterday, i went to hook the hard line coming from the tank back to fuel pump to test the line at the tank, the gas was coming out a orange color, i have included a pic. of the gas that come out of the line from the hard line from the tank, it is orange, what does this mean?
rusted line from the tank?

6271959-002.jpg (34 downloads)
Re: Vapor Lock [Re: MRHWS] #837034
10/27/10 09:45 PM
10/27/10 09:45 PM
Joined: Dec 2007
Posts: 1,639
Brandon, Ms
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cornet684me Offline OP
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Brandon, Ms
i have redone all the fuel line, i have 5/16 line from the tank to fuel pump and from fuel pump to carb, i have a steel line from the fuel pump up to the fuel filter, then a small rubble line with the fuel connecting to the hard line on carb

Re: Vapor Lock [Re: JohnRR] #837035
10/27/10 09:47 PM
10/27/10 09:47 PM
Joined: Dec 2007
Posts: 1,639
Brandon, Ms
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cornet684me Offline OP
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i shined a light in the fuel pump hole and the rod seem to be fine and put my finger on it and it seem to fine

Re: Vapor Lock [Re: 68jim] #837036
10/27/10 10:34 PM
10/27/10 10:34 PM
Joined: Dec 2007
Posts: 1,639
Brandon, Ms
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cornet684me Offline OP
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Brandon, Ms
hey Jim, i am going to check this, i do see that the hard line from the tank stops on the frame rail and has rubber hose connected to the fuel pump and it still has the factory connector and not a clamp that i can tighten, this may be my problem, it may be heating up and allow the air to enter the line, i will check this, i am really confused about the orange gas
thanks

Re: Vapor Lock [Re: CUDAJAS] #837037
10/27/10 10:36 PM
10/27/10 10:36 PM
Joined: Dec 2007
Posts: 1,639
Brandon, Ms
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cornet684me Offline OP
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Brandon, Ms
the problem i am having is fuel coming into to the fuel filter, the fuel filter wld go empty, do you think the line on the carb wld cause this?

Re: Vapor Lock [Re: joedust451] #837038
10/27/10 10:45 PM
10/27/10 10:45 PM
Joined: Dec 2007
Posts: 1,639
Brandon, Ms
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cornet684me Offline OP
top fuel
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Brandon, Ms
hey Joe, i did test the system with the fuel cap off and it still ran out of gas in the fuel filter, i think it is sucking air from of the rubber hoses too, i do think that i need to replace the hard line from the tank though? and i am going to replace the small rubber lines and make sure all have the clamps you can tighten up
good
thanks

Re: Vapor Lock [Re: cornet684me] #837039
10/27/10 11:15 PM
10/27/10 11:15 PM
Joined: Feb 2005
Posts: 5,221
Branson, Mo.
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joedust451 Offline
super gas
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Joined: Feb 2005
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Branson, Mo.
The orange gas is not good, its very possibly rust, At this point its very hard to really determine what could be going on, sounds like you most likely have more then 1 issue going on.


75 Duster, 451 10.87 @ 123.58 NA 97 Z28 6sp., 12.01 @ 115 on a 100 shot 71 Swinger. 360 magnum. 12.58 @ 105 78 cutlass, 469 BBC. 12.70 @ 108 on street tires. http://www.youtube.com/watch?v=Z2kqNmMfheU
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