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914World.com _ 914World Garage _ Fuel Pump Issues - SOLVED?

Posted by: BPic May 16 2020, 06:23 PM

A little background first.

This car is a 72 full rebuild and I bought the engine with carbs from a member. I re-worked the entire harness and everything is working fine with the exception of the fuel pump that was relocated up front.
It worked great and always came on with the key and then it didn't. I pulled the tank checked the power and I have 12 + volts if grounded to the chassis but not with the ground at the pump. I did the grounding mod at the relay board to use the fuel pump relay based on Sir Andy's post. I'm using 914Rubbers new relays.
When it first quit, after checking the voltage I swapped a new relay in and it worked. Then it quit again so I tried several other new relay without any luck. You can hear the relay click so it appears to work. Also when I turn on the hazards that is the relay that clicks on and off with the flashers, I thought this was odd, am I wrong? confused24.gif

What else do I need to check? I'm frustrated as I was getting ready to start the car for the first time in 2.5 years.

Thanks all! I would appreciate any and all advise. So I can get this thing started. beerchug.gif

Posted by: BPic May 17 2020, 07:31 AM

I went to ground at the headlight and pump is now operational.

Posted by: ndfrigi May 17 2020, 10:23 AM

Thanks for sharing and good job fixing it yourself!

Posted by: Superhawk996 May 17 2020, 10:42 AM

smilie_pokal.gif

Let's hear / see it running. Post success to YouTube and embed it here!

Posted by: BPic May 17 2020, 02:36 PM

QUOTE(Superhawk996 @ May 17 2020, 12:42 PM) *

smilie_pokal.gif

Let's hear / see it running. Post success to YouTube and embed it here!


Here you go @http://www.914world.com/bbs2/index.php?showuser=22428

I did a new thread for it as well. But since you asked.

https://youtu.be/8d6uRwdJL_w



Posted by: Superhawk996 May 17 2020, 02:40 PM

QUOTE(BPic @ May 17 2020, 04:36 PM) *

QUOTE(Superhawk996 @ May 17 2020, 12:42 PM) *

smilie_pokal.gif

Let's hear / see it running. Post success to YouTube and embed it here!


Here you go @http://www.914world.com/bbs2/index.php?showuser=22428

I did a new thread for it as well. But since you asked.

https://youtu.be/8d6uRwdJL_w


What an awsome sound. Combination on intake and ticking tappets and exaust. I love air cooled engines!

Thanks for posting.

That must feel awesome to have it firing.

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