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Re: More pump gas trouble ! [Re: 383man] #1476006
07/30/13 01:17 PM
07/30/13 01:17 PM
Joined: Jan 2003
Posts: 27,421
Balt. Md
3
383man Offline OP
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383man  Offline OP
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Joined: Jan 2003
Posts: 27,421
Balt. Md
You can see the cool can by the alt next to the rad in this pic. I put a plastic filter on it to be able to see what the fuel was doing when I had the problem and I also figured it would not be as hot as the metal filter is I normally use there. But when I have this happen it has plenty of fuel to the carb. Ron


Last edited by 383man; 07/30/13 01:18 PM.
Re: More pump gas trouble ! [Re: 383man] #1476007
07/30/13 01:58 PM
07/30/13 01:58 PM
Joined: Jul 2004
Posts: 19,317
State of confusion
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Thumperdart Offline
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Thumperdart  Offline
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State of confusion
What pump r u runnin now............


72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: More pump gas trouble ! [Re: Thumperdart] #1476008
07/30/13 03:08 PM
07/30/13 03:08 PM
Joined: Jan 2003
Posts: 2,931
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Paul_Fancsali Offline
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Todays gas is garbage. There are several brands that will stain the paint less then 30 seconds all are the reform summer blend. Yes the gas is the issue check your gas mileage lately? My gas mileage stinks in summer and gets much better in the winter. By the way I believe your pump is going bad My car did that several years ago and it was the holley pump going bad

Re: More pump gas trouble ! [Re: Paul_Fancsali] #1476009
07/30/13 03:21 PM
07/30/13 03:21 PM
Joined: Jul 2004
Posts: 19,317
State of confusion
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Thumperdart Offline
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Thumperdart  Offline
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Joined: Jul 2004
Posts: 19,317
State of confusion
Quote:

Todays gas is garbage. There are several brands that will stain the paint less then 30 seconds all are the reform summer blend. Yes the gas is the issue check your gas mileage lately? My gas mileage stinks in summer and gets much better in the winter. By the way I believe your pump is going bad My car did that several years ago and it was the holley pump going bad




This is why I asked which pump he was using...........step up to a real capable pump that also can handle exotic fuels or in this case crap. I run the Magnafuel 300 series which is a direct bypass type so no long return runs and it dumps directly into the cell.


72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: More pump gas trouble ! [Re: Thumperdart] #1476010
07/30/13 03:36 PM
07/30/13 03:36 PM
Joined: Apr 2006
Posts: 3,675
Akron, Ohio U.S.A.
roadhazard Offline
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Akron, Ohio U.S.A.
I prefer to bypass mine as close to the carb as possible. Use short feed lines to the carb so the fuel does not have time to heat up before it gets to the bowls.

I can put my hand in the fuel cell and feel the warm fuel out the return. Sometimes, depending on the conditions the outside of my carb actually sweats from the combination of a hot motor and cool fuel

Re: More pump gas trouble ! [Re: roadhazard] #1476011
07/30/13 03:56 PM
07/30/13 03:56 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
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Posts: 52,972
Romeo MI
Quote:

I prefer to bypass mine as close to the carb as possible. Use short feed lines to the carb so the fuel does not have time to heat up before it gets to the bowls.

I can put my hand in the fuel cell and feel the warm fuel out the return. Sometimes, depending on the conditions the outside of my carb actually sweats from the combination of a hot motor and cool fuel




I prefer to do the same on the return line(keep it
close to the carb)... when we first started injection
we returned from the front then a few years later
we changed to a return at the pump.. reason was cost..
we cut cost with no return line... but with higher
fuel pressures you dont run into vapor lock

Re: More pump gas trouble ! [Re: MR_P_BODY] #1476012
07/30/13 05:15 PM
07/30/13 05:15 PM
Joined: Jan 2003
Posts: 32,394
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Quicktree Offline
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Quicktree  Offline
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looking at you set up I don't see any reason for you to have fuel boiling in the carb. when you get done chasing that fuel problem get rid of that stock orange ignition box

Re: More pump gas trouble ! [Re: Quicktree] #1476013
07/30/13 08:24 PM
07/30/13 08:24 PM
Joined: Jan 2003
Posts: 27,421
Balt. Md
3
383man Offline OP
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383man  Offline OP
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I know its not this fuel pump as it did not loose fuel pressure when it happened and the orange box works fine as it did not loose spark either and never has with that orange box. I agree MSD is better but that box has been on our cars since 2000 and never had a problem. I put the plastic filter on early this summer to see what was going on when it did die 3 times and that was a loss of fuel pressure so I ended up replacing that pump early this summer with the Holley red pump I had to see how it worked and it never had a fuel problem again. It was a Firecore pump that cut out early this summer and we are taking care of that. But I wanted to go to the track so I threw a Holley Black pump on with the external reg. Like I said it did not loose fuel pressure yesterday or at all with this pump on it. This is only the first time this has happened this summer. But last summer I had the fuel boiling happen twice. Since then I added the heat shield and a new phenolic spacer which I did at the end of last summer. Thats one of the annoying things is it dont happen all the time as I thought the heat shield helped but yesterday showed me it really did not. Ron

Last edited by 383man; 07/30/13 09:17 PM.
Re: More pump gas trouble ! [Re: 383man] #1476014
07/30/13 09:31 PM
07/30/13 09:31 PM

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Anonymous
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Quote:

I know its not this fuel pump as it did not loose fuel pressure when it happened and the orange box works fine as it did not loose spark either and never has with that orange box. I agree MSD is better but that box has been on our cars since 2000 and never had a problem. I put the plastic filter on early this summer to see what was going on when it did die 3 times and that was a loss of fuel pressure so I ended up replacing that pump early this summer with the Holley red pump I had to see how it worked and it never had a fuel problem again. It was a Firecore pump that cut out early this summer and we are taking care of that. But I wanted to go to the track so I threw a Holley Black pump on with the external reg. Like I said it did not loose fuel pressure yesterday or at all with this pump on it. This is only the first time this has happened this summer. But last summer I had the fuel boiling happen twice. Since then I added the heat shield and a new phenolic spacer which I did at the end of last summer. Thats one of the annoying things is it dont happen all the time as I thought the heat shield helped but yesterday showed me it really did not. Ron




It is hard to imagine it getting that hot that the fuel boils at the carb, but you seem like a very sharp guy that has a handle on it. Hard to believe the top of that inner fender gets that hot as has been suggested. Perhaps try a temp gum to check out your underhood temps in various places underhood ?

Btw, nice sanitary work under the hood, what gears do you run ?

Re: More pump gas trouble ! [Re: ] #1476015
07/30/13 09:36 PM
07/30/13 09:36 PM
Joined: Jan 2003
Posts: 27,421
Balt. Md
3
383man Offline OP
Too Many Posts
383man  Offline OP
Too Many Posts
3

Joined: Jan 2003
Posts: 27,421
Balt. Md
Quote:

Quote:

I know its not this fuel pump as it did not loose fuel pressure when it happened and the orange box works fine as it did not loose spark either and never has with that orange box. I agree MSD is better but that box has been on our cars since 2000 and never had a problem. I put the plastic filter on early this summer to see what was going on when it did die 3 times and that was a loss of fuel pressure so I ended up replacing that pump early this summer with the Holley red pump I had to see how it worked and it never had a fuel problem again. It was a Firecore pump that cut out early this summer and we are taking care of that. But I wanted to go to the track so I threw a Holley Black pump on with the external reg. Like I said it did not loose fuel pressure yesterday or at all with this pump on it. This is only the first time this has happened this summer. But last summer I had the fuel boiling happen twice. Since then I added the heat shield and a new phenolic spacer which I did at the end of last summer. Thats one of the annoying things is it dont happen all the time as I thought the heat shield helped but yesterday showed me it really did not. Ron




It is hard to imagine it getting that hot that the fuel boils at the carb, but you seem like a very sharp guy that has a handle on it. Hard to believe the top of that inner fender gets that hot as has been suggested. Perhaps try a temp gum to check out your underhood temps in various places underhood ?

Btw, nice sanitary work under the hood, what gears do you run ?




Thank you. Sometimes I cant believe how hot the carb feels when the eng is only at 180 to 185. I plan to make about a 20 mile one way run to a cruise spot this weekend and I will have everything ready if it acts up to check it out real close. A temp gun is a good idea and I want to get one anyway. Gears are 4.30's with a 30 x 9 rear tire. At 55 to 60 I run about 3200 RPM. Ron

Re: More pump gas trouble ! [Re: 383man] #1476016
07/30/13 11:25 PM
07/30/13 11:25 PM
Joined: Sep 2007
Posts: 145
NJ
C
cb1289 Offline
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Joined: Sep 2007
Posts: 145
NJ
Ron,
Had the exact same problem on a 65 Satellite big block. Installed a 3/16 vapor return line with approx.060" orifice restriction from thefuel pressure regulator guage port to the fill tube in the rear.Carter electric pump,no mech pump,dual quads then later a 950 Holley.Never ever had the problem again.This info comes from an article many years ago by Richard Ehrenberg in Mopar Action.


62 Dodge Dart Wagon 65 Plymouth Satellite
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