MG Sports Cars

engine swaps and other performance upgrades, plus "factory" and Costello V8s

Go to Thread: PreviousNext
Go to: Forum ListMessage ListNew TopicLog In


Citron
Stephen DeGroat
Lugoff, SC
(365 posts)

Registered:
10/23/2007 09:43PM

Main British Car:
1970 MGBGT V6, 7004R, AC, matching trailer 3.1 liter

Fuel pick up
Posted by: Citron
Date: March 05, 2013 04:38PM

My 70 BGT will not pick up the last 2-3 gallons of fuel. So I put a later model float assembly in, the kind with a pick up line. It does get the gas that the built in will not get.
Problem: Before installation I wired up the float assy and it would run the gauge just fine. When I put 4 gallons of gas in the tank, the gauge reads about 1/16 of a tank.
Is it possible that the float is hitting the old pick up line?
If so, how do I fix that?

Steve


ex-tyke
Graham Creswick
Chatham, Ontario, Canada
(1095 posts)

Registered:
10/25/2007 11:17AM

Main British Car:
1976 MGB Ford 302

authors avatar
Re: Fuel pick up
Posted by: ex-tyke
Date: March 06, 2013 11:57AM

Is it possible to remove the filler pipe/hose and insert an inspection mirror for a peak?
While your at it, you can check resistance values of the sender to ensure operating condition......10 to 35 ohms for full tank and 210 to 270 ohms for empty (info courtesy of 'MGB Electrical Systems' by Rick Astley)


Citron
Stephen DeGroat
Lugoff, SC
(365 posts)

Registered:
10/23/2007 09:43PM

Main British Car:
1970 MGBGT V6, 7004R, AC, matching trailer 3.1 liter

Re: Fuel pick up
Posted by: Citron
Date: March 06, 2013 01:01PM

The ohms are correct.
I will try to see throught the filler, but I feel sure the new float is fouling the old pick up tube.

thanks Graham

Steve


Citron
Stephen DeGroat
Lugoff, SC
(365 posts)

Registered:
10/23/2007 09:43PM

Main British Car:
1970 MGBGT V6, 7004R, AC, matching trailer 3.1 liter

Re: Fuel pick up
Posted by: Citron
Date: March 07, 2013 03:45PM

Fixed.
Here is what I did.
Drained the tank again. Took the new float out and looked in again. Reached in with a long pry bar and pried the inner end of the pick up line loose from the bracket. I was hoping that I could just bend it out of the way. Oh no. It then flopped around in the tank, but would not come loose.
I used a coat hanger and looped it around the line and pulled it over to the hole. Then.... ready.... I cut it off with a hack saw blade.
Took the longer piece out and shoved the short piece out of the way.
I put the whole thing back together and put in 5 gal of gas. Now it read 1/8 tank. Real progress.
Emptied the tank again. Did some measuring and found that the bracket that held the old pick up line in the center of the tank was fouling the new float.
Long pry bar again and bent that down flat.
Now it works. 5 Gal now reads just shy of 1/2 tank.

Steve


MGBV8
Carl Floyd
Kingsport, TN
(3832 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB, Buick 215

authors avatar
Re: Fuel pick up
Posted by: MGBV8
Date: March 07, 2013 10:13PM

Heh, I knew you'd get it!


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5870 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: Fuel pick up
Posted by: BlownMGB-V8
Date: March 08, 2013 08:54AM

Man. No way I'd have known to do all that. Glad you got it fixed.

Jim


Sorry, only registered users may post in this forum.