Re: Vapor Lock
[Re: cornet684me]
#837020
10/27/10 12:53 AM
10/27/10 12:53 AM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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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
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Re: Vapor Lock
[Re: RapidRobert]
#837022
10/27/10 01:24 AM
10/27/10 01:24 AM
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Joined: Feb 2005
Posts: 5,221 Branson, Mo.
joedust451
super gas
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super gas
Joined: Feb 2005
Posts: 5,221
Branson, Mo.
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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.
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Re: Vapor Lock
[Re: cornet684me]
#837024
10/27/10 09:13 AM
10/27/10 09:13 AM
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Joined: Feb 2005
Posts: 28,312 Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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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.
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Re: Vapor Lock
[Re: RapidRobert]
#837026
10/27/10 10:31 AM
10/27/10 10:31 AM
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Joined: Feb 2005
Posts: 5,221 Branson, Mo.
joedust451
super gas
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super gas
Joined: Feb 2005
Posts: 5,221
Branson, Mo.
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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.
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Re: Vapor Lock
[Re: cornet684me]
#837027
10/27/10 11:04 AM
10/27/10 11:04 AM
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Joined: Jan 2003
Posts: 2,072 Cambridge, Ontario, Canada
CUDAJAS
top fuel
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top fuel
Joined: Jan 2003
Posts: 2,072
Cambridge, Ontario, Canada
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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.
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Re: Vapor Lock
[Re: CUDAJAS]
#837028
10/27/10 11:38 AM
10/27/10 11:38 AM
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Joined: Jan 2010
Posts: 329 Orange Park, FL
MRHWS
enthusiast
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enthusiast
Joined: Jan 2010
Posts: 329
Orange Park, FL
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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
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Re: Vapor Lock
[Re: cornet684me]
#837031
10/27/10 04:16 PM
10/27/10 04:16 PM
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Joined: Jan 2003
Posts: 75,005 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,005
U.S.S.A.
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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 .
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Re: Vapor Lock
[Re: RapidRobert]
#837033
10/27/10 09:43 PM
10/27/10 09:43 PM
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Joined: Dec 2007
Posts: 1,639 Brandon, Ms
cornet684me
OP
top fuel
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OP
top fuel
Joined: Dec 2007
Posts: 1,639
Brandon, Ms
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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?
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Re: Vapor Lock
[Re: 68jim]
#837036
10/27/10 10:34 PM
10/27/10 10:34 PM
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Joined: Dec 2007
Posts: 1,639 Brandon, Ms
cornet684me
OP
top fuel
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OP
top fuel
Joined: Dec 2007
Posts: 1,639
Brandon, Ms
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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
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Re: Vapor Lock
[Re: joedust451]
#837038
10/27/10 10:45 PM
10/27/10 10:45 PM
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Joined: Dec 2007
Posts: 1,639 Brandon, Ms
cornet684me
OP
top fuel
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OP
top fuel
Joined: Dec 2007
Posts: 1,639
Brandon, Ms
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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
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