Trying to start my carbureted 1.7, Electrical help |
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Trying to start my carbureted 1.7, Electrical help |
pastormacman |
Nov 11 2019, 11:21 AM
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#1
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Newbie Group: Members Posts: 28 Joined: 6-July 05 From: Bakersfield, CA Member No.: 4,382 |
Issue: There's no power going to the coil/fuel pump when I turn the key. (you can skip the history and jump down to the ALL CAPS and (IMG:style_emoticons/default/popcorn[1].gif) to see more about the issue)
History: 16 years ago, this was a running 1.7 fuel injected '73 in Bakersfield, CA. I bought it wrecked in the front end, (hood crunched a little, passenger fender dented) A friend straightened the trunk, cut off and welded a replacement fender on and we put on a replacement hood. I had it painted and new tires on it. It was my daily driver for a couple of years. 14 years ago, I got a new daily driver and this sat for a few months. Unbeknownst to me, a critter made it's home around one of the cylinders with mud and leaves. I went to drive it and the cylinder overheated and seized the engine. I bought new cylinders and took it to a friend to replace. Upon removing the engine he discovered that my block was cracked. I found a rebuilt 1.7 down in Los Angeles and bought it to replace the old engine. My mechanic friend was going to work on it in his spare time for me. I had always had trouble with the fuel injection, so I saw this as an opportunity to remove it and replace it with carbs. So he installed the carbs and after he got the engine back in the car, he discovered his dog had eaten the wiring harness (From the relay plate to the alternator/starter) At that point, life happened... kids grew up, I worked a lot and the car sat in that condition in one of the bays in his shop for 10 years. Three years ago, my sons are now teenagers, and I decided I wanted to finish it up and get it out of my friends way. He had kind grown resentful of it being there. I brought it home and put it on jack stands in my garage. I ordered a new wiring harness and tried to finish the car to get it started for my kids to drive. I discovered that through life I had developed a strong case of claustrophobia and it's difficult to get under the car for me. So it has sat for another three years. So I have a new friend who rebuilds VW Bugs who is now helping me.We've gotten all the electrical hooked back up. Removed the gas tank and flushed it out. replaced all the fuel lines, and filters. And got a new battery. Which brings me to the present... (IMG:style_emoticons/default/popcorn[1].gif) ISSUE: WHEN WE TURN THE KEY, THERE'S NO POWER TO THE COIL OR FUEL PUMP. Since we replaced the fuel injection with carburetors, we no longer have the ECU in the car. (in fact, I no longer have the ECU or any of the fuel injection parts anymore, they are long gone at my other friends garage) Not sure if that was a mistake, I thought I didn't need it anymore since the FI was gone. My VW friend is not familiar enough with 914 electrical to find the issue. Could I have a bad relay? I see that there is a port for the white wires from the ECU to connect to the relay panel. Is there a part I need there in place of the ECU wiring? Is this a common issue with a carb replacement? Other electrical things work, (headlights, and whatnot) and if I continue to turn the key, the starter starts to crank, but no power to the coil/fuel pump. Any help would be appreciated. Sorry for the long post. |
pastormacman |
Nov 11 2019, 05:24 PM
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#2
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Newbie Group: Members Posts: 28 Joined: 6-July 05 From: Bakersfield, CA Member No.: 4,382 |
That link to SirAndy's instructions was very helpful. I saved it to my computer for future reference as well. I'm going to wire my fuel pump up according to that diagram. I can see now that my mechanic friend knew that the original wiring would not power the pump and he cut off the fuel pump connector and manually rewired the fuel pump to a ground post and directly to the coil. I see now why that is bad.
I'm also starting to realize that maybe my fuel pump is bad. I tried a second time to connect the positive lead of the fuel pump directly to the positive battery post. I don't hear it pumping, I don't see any movement in the fuel in the clear fuel filter ahead of the pump, and I see nothing come out of the jets in the carb as I pump the throttle cable. I'm thinking my fuel pump is not working. If it's power up, should I hear it pumping? I remember hearing the pump come on all the time before, but that was the old FI pump. |
SirAndy |
Nov 11 2019, 05:27 PM
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#3
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Resident German Group: Admin Posts: 41,961 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
I'm also starting to realize that maybe my fuel pump is bad. I used the CB rotary pump below on my carbed 2056 and it worked much better than the facet pumps (a lot quieter too): https://www.cbperformance.com/product-p/3193.htm (IMG:style_emoticons/default/bye1.gif) |
pastormacman |
Nov 11 2019, 06:04 PM
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#4
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Newbie Group: Members Posts: 28 Joined: 6-July 05 From: Bakersfield, CA Member No.: 4,382 |
I used the CB rotary pump below on my carbed 2056 and it worked much better than the facet pumps (a lot quieter too): https://www.cbperformance.com/product-p/3193.htm (IMG:style_emoticons/default/bye1.gif) I see that this unit comes with a filter already attached (the description says that removal of the attached filter voids the warranty) I'm assuming this whole unit would replace Both the pump and filter I already have right? |
surfdogskier |
Nov 11 2019, 06:08 PM
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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 |
I used the CB rotary pump below on my carbed 2056 and it worked much better than the facet pumps (a lot quieter too): https://www.cbperformance.com/product-p/3193.htm (IMG:style_emoticons/default/bye1.gif) I see that this unit comes with a filter already attached (the description says that removal of the attached filter voids the warranty) I'm assuming this whole unit would replace Both the pump and filter I already have right? That is the same one I put one. Yes, the filter is attached and all one unit. |
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