 Hate me, I converted to carbs. Question about priming |
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| surfdogskier |
 Oct 22 2019, 02:14 PM
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#1
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Member  Group: Members Posts: 164 Joined: 20-May 16 From: East TN Member No.: 20,019 Region Association: None  |
I finally had my fill of FI and ripped out the entire fuel injection in 30 minutes. I was finally able to clean my engine out nice Installed dual weber carbs. I'm going to hold on to my fuel injection if I ever change my mind or sell.
Question. I installed a new low pressure fuel pump so my lines are empty. When I turn the key, I can't hear it like my FI fuel pump. What is the best way to prime these when they are new? Everything is hooked up except for the throttle cable. Should I disconnect the fuel lines to get the air out of lines. I do not know if these are vacuumed or not is why I am asking. |
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| GregAmy |
Oct 22 2019, 09:01 PM
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#2
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Advanced Member Group: Members Posts: 2,418 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States 
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Post how you have it wired?
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| surfdogskier |
Oct 23 2019, 07:50 AM
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#3
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Member Group: Members Posts: 164 Joined: 20-May 16 From: East TN Member No.: 20,019 Region Association: None |
QUOTE(GregAmy @ Oct 22 2019, 11:01 PM)  Post how you have it wired? I have it wired the same way my FI distributor wires were. |
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| GregAmy |
Oct 23 2019, 08:35 AM
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#4
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Advanced Member Group: Members Posts: 2,418 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States
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QUOTE(surfdogskier @ Oct 23 2019, 09:50 AM) QUOTE(GregAmy @ Oct 22 2019, 11:01 PM) Post how you have it wired? I have it wired the same way my FI distributor wires were. Your FI fuel pump wires were energized/grounded by the FI ECU via the relay plate. No worky for carbs. |
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| surfdogskier |
Oct 23 2019, 08:52 AM
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#5
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Member Group: Members Posts: 164 Joined: 20-May 16 From: East TN Member No.: 20,019 Region Association: None |
QUOTE(GregAmy @ Oct 23 2019, 10:35 AM) QUOTE(surfdogskier @ Oct 23 2019, 09:50 AM) QUOTE(GregAmy @ Oct 22 2019, 11:01 PM) Post how you have it wired? I have it wired the same way my FI distributor wires were. Your FI fuel pump wires were energized/grounded by the FI ECU via the relay plate. No worky for carbs. I know. I did the SirAndy info for converting over to carbs with the extra ground wire. My pump runs now when the ignition is turned and cranking. However, it doesn't want to shut off when the key is turned off. I have the pull the plug off the no. 4 pin. http://www.914world.com/specs/SirAndyCarbFuelPumpRelay.php |
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| GregAmy |
Oct 23 2019, 09:40 AM
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#6
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Advanced Member Group: Members Posts: 2,418 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States
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Edited noon for errors.
QUOTE(surfdogskier @ Oct 23 2019, 10:52 AM) I know. I did the SirAndy info for converting over to carbs with the extra ground wire. My pump runs now when the ignition is turned and cranking. However, it doesn't want to shut off when the key is turned off. I have the pull the plug off the no. 4 pin. http://www.914world.com/specs/SirAndyCarbFuelPumpRelay.php That doesn't make sense. Per that link and its accompanying photo, you're actually grounding the T4b III circuit, "third" wire, which grounds the fuel pump relay solenoid, closing the circuit for the power side of the fuel pump. The power side of the fuel pump circuit comes from fuse S13, which is energized directly from the battery. That's why the pump comes on. The fuel pump relay gets actuated by power through the power supply relay (PSR). The PSR is only hot with the key on, through fuse S9. If your fuel pump is running with the key on, then that implies to me that there's an issue with your PSR circuit or your fuel pump circuit. For reference, T4b-IV ("fourth" wire, bottom left in that photo) gets power when the ignition switch is in the "Start" position. If you ground that terminal it'll short circuit during cranking. Unless I'm misunderstanding something? Note that these are based off of my 1974 electrical diagrams. |
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Posts in this topic
surfdogskier Hate me, I converted to carbs. Question about priming Oct 22 2019, 02:14 PM
GregAmy What carbs?
Is the pump actually running when you... Oct 22 2019, 02:24 PM
914_teener
What carbs?
Is the pump actually running when yo... Oct 22 2019, 02:29 PM porschetub No need to remove lines,if setup right it will sel... Oct 22 2019, 02:33 PM ndfrigi I think you just used the stock wire for fuel pump... Oct 22 2019, 02:42 PM surfdogskier I did not change the setup with the wires to the e... Oct 22 2019, 03:11 PM bbrock
I did not change the setup with the wires to the ... Oct 22 2019, 04:16 PM surfdogskier
I did not change the setup with the wires to the... Oct 22 2019, 04:18 PM porschetub
I did not change the setup with the wires to the ... Oct 22 2019, 04:47 PM rhodyguy What type of pump did you install? Rotary or facet... Oct 22 2019, 03:47 PM surfdogskier
What type of pump did you install? Rotary or face... Oct 22 2019, 04:03 PM Rand The pressure is VERY different. Like 30psi vs 5. H... Oct 22 2019, 03:54 PM surfdogskier
The pressure is VERY different. Like 30psi vs 5. ... Oct 22 2019, 04:06 PM rhodyguy If not done do Andy's ground wire between the ... Oct 22 2019, 04:12 PM Rand "Dr 914" is here to sell you parts. You ... Oct 22 2019, 04:16 PM surfdogskier
"Dr 914" is here to sell you parts. You... Oct 22 2019, 07:03 PM Rand I still want an explanation to why MPS was even br... Oct 22 2019, 04:26 PM surfdogskier
I still want an explanation to why MPS was even b... Oct 22 2019, 04:48 PM rhodyguy Yes. No pump power right now. Oct 22 2019, 04:33 PM surfdogskier Ok, I connected the 4 pin to the ground as mention... Oct 22 2019, 04:53 PM bbrock Did you set the float levels on both carbs when yo... Oct 22 2019, 05:58 PM rhodyguy Model of distributor? Go through the setup procedu... Oct 22 2019, 06:56 PM surfdogskier
Model of distributor? Go through the setup proced... Oct 22 2019, 07:09 PM surfdogskier I am now thinking my timing is off. I am getting... Oct 22 2019, 07:11 PM thelogo Carbs are king :poke: Oct 22 2019, 07:50 PM sixnotfour 180 out Oct 22 2019, 08:12 PM rhodyguy The Dansk from pelican is the quivelent of a 009? ... Oct 23 2019, 07:15 AM surfdogskier
The Dansk from pelican is the quivelent of a 009?... Oct 23 2019, 07:49 AM rhodyguy No. 1, 4, 3, 2. Review chapter 3 of your Haynes. Oct 23 2019, 08:11 AM surfdogskier
No. 1, 4, 3, 2. Review chapter 3 of your Haynes.
... Oct 23 2019, 08:53 AM sixnotfour
go by the picture Oct 23 2019, 09:48 AM GregAmy
go by the picture
With key on and pump runnin... Oct 23 2019, 10:02 AM surfdogskier
go by the picture
With key on and pump runni... Oct 23 2019, 11:32 AM GregAmy
Fuel pump relay pulled, pump goes off.
Power supp... Oct 23 2019, 11:39 AM Gatornapper #1 - you need this jumper on your relay board (low... Oct 23 2019, 10:12 AM surfdogskier
#1 - you need this jumper on your relay board (lo... Oct 23 2019, 06:11 PM Literati914
"Dr 914" is here to sell you parts. Yo... Oct 23 2019, 01:11 PM surfdogskier I will work on the fuel pump not shutting off afte... Oct 23 2019, 01:35 PM rhodyguy Figure out where TDC on cyl #1 is. Use the engine ... Oct 23 2019, 02:08 PM surfdogskier
Figure out where TDC on cyl #1 is. Use the engine... Oct 23 2019, 02:58 PM sixnotfour
the ground needs to be #3 not #4 as before mentio... Oct 23 2019, 02:22 PM sixnotfour
the ground needs to be #3 not #4 as before menti... Oct 23 2019, 06:48 PM injunmort sounds like you need to static time engine from th... Oct 23 2019, 03:18 PM IronHillRestorations Did you turn your engine over to TDC#1 before you ... Oct 23 2019, 04:10 PM surfdogskier
Did you turn your engine over to TDC#1 before you... Oct 23 2019, 04:57 PM surfdogskier
Did you turn your engine over to TDC#1 before you... Oct 23 2019, 04:58 PM surfdogskier I found the TDC on my fan. Saw where my rotor but... Oct 23 2019, 06:08 PM dlee6204
I found the TDC on my fan. Saw where my rotor bu... Oct 23 2019, 06:24 PM surfdogskier
I found the TDC on my fan. Saw where my rotor b... Oct 23 2019, 07:33 PM rhodyguy Where on the cap did #1 wind up? Normally it would... Oct 23 2019, 07:21 PM surfdogskier
Where on the cap did #1 wind up? Normally it woul... Oct 23 2019, 08:38 PM |
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