Fuel system help?
FTE Legend
Joined: Nov 2015
Posts: 30,855
Likes: 4,105
From: Angier, NC
Do you have 2 tanks?
Do you have a switch on the dash for 2 tanks?
How many hoses go to it, looks like only 2 from the picture but could have 1 we cant see?
What do the hoses we can see come from and go to?
The wire clip looks like it is broken and the wire could be pulled out is there power to that wire?
Dave ----
Do you have a switch on the dash for 2 tanks?
How many hoses go to it, looks like only 2 from the picture but could have 1 we cant see?
What do the hoses we can see come from and go to?
The wire clip looks like it is broken and the wire could be pulled out is there power to that wire?
Dave ----
Thread Starter
|
Mountain Pass
Joined: Jul 2020
Posts: 155
Likes: 7
yes I have two tanks one in the rear and on the side and yes I have a switch on the right side of the heater control
FTE Legend
Joined: Nov 2015
Posts: 30,855
Likes: 4,105
From: Angier, NC
AWAS it is the tank switching valve.
It would have 3 hoses on it.
1 in from each tank = 2
and 1 out to the fuel pump on the side of the motor then on to the carb = #3
If you check for power it will only have power if on the front / side tank and not have power when on the rear tank.
That is how my 81 F100 Flare side works. Last week I was running on the front / side tank, had 210 miles on it and the gauge was still on 3/4 when it should have been empty.
Quick flip to the rear tank and saw it at 1/4. The valve defaults to the rear tank with no power. I had a short and blew the fuse and why it had no power.
The gauge part is in the dash switch and why it was still showing the front / side tank level when on that tank.
Dave ----
It would have 3 hoses on it.
1 in from each tank = 2
and 1 out to the fuel pump on the side of the motor then on to the carb = #3
If you check for power it will only have power if on the front / side tank and not have power when on the rear tank.
That is how my 81 F100 Flare side works. Last week I was running on the front / side tank, had 210 miles on it and the gauge was still on 3/4 when it should have been empty.
Quick flip to the rear tank and saw it at 1/4. The valve defaults to the rear tank with no power. I had a short and blew the fuse and why it had no power.
The gauge part is in the dash switch and why it was still showing the front / side tank level when on that tank.
Dave ----
Thread Starter
|
Mountain Pass
Joined: Jul 2020
Posts: 155
Likes: 7
AWAS it is the tank switching valve.
It would have 3 hoses on it.
1 in from each tank = 2
and 1 out to the fuel pump on the side of the motor then on to the carb = #3
If you check for power it will only have power if on the front / side tank and not have power when on the rear tank.
That is how my 81 F100 Flare side works. Last week I was running on the front / side tank, had 210 miles on it and the gauge was still on 3/4 when it should have been empty.
Quick flip to the rear tank and saw it at 1/4. The valve defaults to the rear tank with no power. I had a short and blew the fuse and why it had no power.
The gauge part is in the dash switch and why it was still showing the front / side tank level when on that tank.
Dave ----
It would have 3 hoses on it.
1 in from each tank = 2
and 1 out to the fuel pump on the side of the motor then on to the carb = #3
If you check for power it will only have power if on the front / side tank and not have power when on the rear tank.
That is how my 81 F100 Flare side works. Last week I was running on the front / side tank, had 210 miles on it and the gauge was still on 3/4 when it should have been empty.
Quick flip to the rear tank and saw it at 1/4. The valve defaults to the rear tank with no power. I had a short and blew the fuse and why it had no power.
The gauge part is in the dash switch and why it was still showing the front / side tank level when on that tank.
Dave ----
Thread
Thread Starter
Forum
Replies
Last Post
vc10786
Fuel Injection, Carburetion & Fuel System
3
Aug 28, 2020 11:52 PM
vc10786
Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460)
3
Aug 28, 2019 04:02 PM
Tenn01PSD350
1999 - 2003 7.3L Power Stroke Diesel
121
May 3, 2007 05:52 PM
