Fuel pump help, Please |
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Fuel pump help, Please |
gster |
May 19 2018, 02:55 PM
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#1
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Newbie Group: Members Posts: 11 Joined: 15-April 17 From: canada Member No.: 21,021 Region Association: Canada |
I've installed an Airtex pump on the car as recommended by many.
The car does run but terribly.... I hope I've installed correctly and put the "T" adapter in the right place. The fuel line from the tank goes to the filter then to the pump. The pump output line is then T-eed to the other 2 lines.... Have I got this wrong? Is the filter restricting flow? The car has been sitting awhile and I've put fresh gas in. Otherwise nothing has changed. Any help is appreciated. |
ClayPerrine |
May 19 2018, 03:02 PM
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#2
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Life's been good to me so far..... Group: Admin Posts: 15,454 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille |
There should NOT be a T fitting when using the airtex pump. The brass fitting on the fuel pump should connect to the filter. The other side of the filter should connect to the big line on the tank. The return line from the engine should connect directly to the smaller line on the tank.
If you put in the T fitting, you are dumping fuel pressure. That will make it run terrible. |
gster |
May 19 2018, 03:22 PM
Post
#3
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Newbie Group: Members Posts: 11 Joined: 15-April 17 From: canada Member No.: 21,021 Region Association: Canada |
There should NOT be a T fitting when using the airtex pump. The brass fitting on the fuel pump should connect to the filter. The other side of the filter should connect to the big line on the tank. The return line from the engine should connect directly to the smaller line on the tank. If you put in the T fitting, you are dumping fuel pressure. That will make it run terrible. Thanks for the response but I'm still confused... I've got a pump with an input and and output, understood. There's a third gas line (return) that I need to account for... |
ClayPerrine |
May 19 2018, 03:27 PM
Post
#4
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Life's been good to me so far..... Group: Admin Posts: 15,454 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille |
There should NOT be a T fitting when using the airtex pump. The brass fitting on the fuel pump should connect to the filter. The other side of the filter should connect to the big line on the tank. The return line from the engine should connect directly to the smaller line on the tank. If you put in the T fitting, you are dumping fuel pressure. That will make it run terrible. Thanks for the response but I'm still confused... I've got a pump with an input and and output, understood. There's a third gas line (return) that I need to account for... The input on the pump comes from the tank. The outlet on the pump goes to the pressure line going back to the engine. The return line coming from the motor hooks directly to the tank. Ignore the blue line. Your car won't have it. This diagram should help. (IMG:http://www.914world.com/bbs2/uploads/post-13474-1526745842.gif) |
gster |
May 19 2018, 04:08 PM
Post
#5
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Newbie Group: Members Posts: 11 Joined: 15-April 17 From: canada Member No.: 21,021 Region Association: Canada |
There should NOT be a T fitting when using the airtex pump. The brass fitting on the fuel pump should connect to the filter. The other side of the filter should connect to the big line on the tank. The return line from the engine should connect directly to the smaller line on the tank. If you put in the T fitting, you are dumping fuel pressure. That will make it run terrible. Thanks for the response but I'm still confused... I've got a pump with an input and and output, understood. There's a third gas line (return) that I need to account for... The input on the pump comes from the tank. The outlet on the pump goes to the pressure line going back to the engine. The return line coming from the motor hooks directly to the tank. Ignore the blue line. Your car won't have it. This diagram should help. (IMG:http://www.914world.com/bbs2/uploads/post-13474-1526745842.gif) Ok. I've disconnected the T and plumbed directly to the pump. Car runs good. I still have an orphaned line that's just hanging there. Original pump had 3 spiggots. Appreciate your patience. |
ndfrigi |
May 19 2018, 06:41 PM
Post
#6
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Advanced Member Group: Members Posts: 2,928 Joined: 21-August 11 From: Orange County Member No.: 13,474 Region Association: Southern California |
There should NOT be a T fitting when using the airtex pump. The brass fitting on the fuel pump should connect to the filter. The other side of the filter should connect to the big line on the tank. The return line from the engine should connect directly to the smaller line on the tank. If you put in the T fitting, you are dumping fuel pressure. That will make it run terrible. Thanks for the response but I'm still confused... I've got a pump with an input and and output, understood. There's a third gas line (return) that I need to account for... The input on the pump comes from the tank. The outlet on the pump goes to the pressure line going back to the engine. The return line coming from the motor hooks directly to the tank. Ignore the blue line. Your car won't have it. This diagram should help. (IMG:http://www.914world.com/bbs2/uploads/post-13474-1526745842.gif) Ok. I've disconnected the T and plumbed directly to the pump. Car runs good. I still have an orphaned line that's just hanging there. Original pump had 3 spiggots. Appreciate your patience. I’m sure the T line came is from F.I. line from engine bay (fuel regulator) going back to tank that split: 1 from your original 3 port fuel pump and 1 back to tank return. You can just remove the T line and let the fuel line coming from tunnel return line and directly connect to fuel tank return. Here is a pic how the 3 port fuel pump. |
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