 Fuel Pump Troubleshooting, How Do I Hot wire the Pump? |
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| Steve_R |
 May 4 2014, 10:38 PM
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#1
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Member  Group: Members Posts: 68 Joined: 8-August 12 From: San Diego, CA Member No.: 14,777 Region Association: None  |
I'm having some trouble starting my 73 1.7 FI engine after a rebuild.
I suspect it is a fuel delivery problem. When I crank the starter the engine fires up but quits as soon as I return the key to the on (run) position. The pump runs for about 2 seconds when the key is turned on. So, I would like to trouble shoot the fuel pump. I have a pressure gauge and I would like to hot wire the fuel pump so it stays on all of the time. What pins to I jumper on the relay board to make the fuel pump continuously run while I run the engine. I found this fuel pump trouble shooting link. However I can't seem to navigate beyond the first page. http://members.rennlist.com/pbanders/FPChecklist_frame.htm Thanks, |
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| Thestigz06 |
May 4 2014, 10:48 PM
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#2
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Aspiring Jarhead Group: Members Posts: 238 Joined: 22-February 11 From: Temecula, CA Member No.: 12,749 Region Association: Southern California |
A good temporary fix is to run a wire off a hot post on your coil through the tins. As for the fuel pump cutting out you possibly need to replace the relay for the fuel pump. Hope this helps!
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| bperry |
May 5 2014, 01:06 AM
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#3
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Lurker Group: Members Posts: 477 Joined: 16-February 04 From: Dallas, Tx Member No.: 1,661 |
FuelPump wiring
--- bill |
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| TheCabinetmaker |
May 5 2014, 04:34 AM
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#4
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I drive my car everyday Group: Members Posts: 8,300 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
Most common cause of no start after rebuild is getting t the fuel lines crossed in the engine n bay. I've done it myself even when they were marked.
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| 914itis |
May 5 2014, 06:50 AM
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#5
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Advanced Member Group: Members Posts: 2,892 Joined: 9-October 10 From: New York City Member No.: 12,256 Region Association: North East States |
QUOTE(Steve_R @ May 5 2014, 12:38 AM)  I'm having some trouble starting my 73 1.7 FI engine after a rebuild. I suspect it is a fuel delivery problem. When I crank the starter the engine fires up but quits as soon as I return the key to the on (run) position. The pump runs for about 2 seconds when the key is turned on. So, I would like to trouble shoot the fuel pump. I have a pressure gauge and I would like to hot wire the fuel pump so it stays on all of the time. What pins to I jumper on the relay board to make the fuel pump continuously run while I run the engine. I found this fuel pump trouble shooting link. However I can't seem to navigate beyond the first page. http://members.rennlist.com/pbanders/FPChecklist_frame.htm Thanks, It is normal for the pump to prime for two seconds then stops when you turn the key on. |
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| r_towle |
May 5 2014, 07:12 AM
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#6
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Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States 
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QUOTE(The Cabinetmaker @ May 5 2014, 06:34 AM) Most common cause of no start after rebuild is getting t the fuel lines crossed in the engine n bay. I've done it myself even when they were marked. (IMG:style_emoticons/default/agree.gif) It will do exactly what you stated when you cross the lines. If the pump fires up when you turn the key to start it, the pump wiring is correct and the pump works. |
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