Fuel injection relief here!

[OKType3Tim]

My memory can't dredge up the answer and I haven't found a picture: Which bolt does this mount under on the engine?

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'69 Squareback restoration
'69 Fastback restoration
'66 Type34

[Ceckert64]

It mounts under the left front bolt of the oil breather stand.
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1964 sunroof Beetle Restoration "Herbie"
“Joann” 1970 Elm Green Squareback
1972 Sierra Yellow Tin Top Westfalia Camper
“Fitz” 1971 Westfalia Poptop

[OKType3Tim]

Thank you. And there it is in your awesome build thread:

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'69 Squareback restoration
'69 Fastback restoration
'66 Type34

[Ceckert64]

[GeoPMel]

Hi All,
Lots of useful information here! I am currently in the process of fixing up my 1968 Type 3 which belonged to my grandmother. I got it running for the most part but the fuel injection is my last big hurdle. For some reason two fuel injectors, on cylinders 2 and 3 are not getting power. I checked the injectors and they are fine. When I swap the injector power leads to a different cylinder, that becomes the inactive one. Continuity to the harness is good. My best guess is that the ECU is the issue. After inspecting the ECU, the inactive injector plugs are on the same power traces. This is as far as I got and where most of my electrical knowledge ends. Maybe a bad transistor or resistor? Nothing seems fried. Does it seem like I am on the right track or is there a different issue that could cause only two of the injectors to stop working? I really appreciate any input. My roots are with MOPAR so i'm a bit out of my comfort zone here.

Thanks,
George

[Ceckert64]

Look at the connection on the ECU, see if that one is dirty. Look on the wiring connect to make sure the tabs are making a tight contact. Or, you could have a bad ground. On the last picture posted in this thread just above your post, you can see the grounding ring for the FI. Check that all those connections are good. Or the grounds are next to intakes. The injectors fire in pairs so it sounds more like the ECU but either way, check and clean the grounds. sounds like a cool project, good luck with it.
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1964 sunroof Beetle Restoration "Herbie"
“Joann” 1970 Elm Green Squareback
1972 Sierra Yellow Tin Top Westfalia Camper
“Fitz” 1971 Westfalia Poptop

[raygreenwood]

[MarcVoss]

The injectors of Cly 2 & 3 are one group, so they inject at the same time.
Either the connection from the distributor to the ECU is bad, or one triggerpoint is bad. Have the triggers contacs ever been removed? Then maybe a longer screw has been used which will shorten the contact at higher rotation. Testing it while the distributor is removed won‘t show this effect.

Marc
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Best Regards from Germany, the origin country of Volkswagen.

Marc

[GeoPMel]

I really appreciate all of the feedback! I checked my trigger points and the plastic cam followers were worn down to almost nothing. I'm surprised it even ran on two cylinders. I will get some new ones and see if that fixes the issue. When I reinstall them is it best to add some light grease or are they supposed to run dry?

George

[rosevillain]

Grease the shaft. Bosch distributor grease is best, but something that won't fling off.

[Kepler]

I am working on a '70 fastback. It had been sitting in a barn for about 15 years. Unfortunately, the fuel system was not emptied before it was put in storage.

The fuel tank was coated with varnish. I filled it with Simple Green, let it soak for a week, and then blasted it with a pressure washer. Now it is in good shape.

I can't get the fuel pump to work. I let it soak in diesel fuel and then connected it up to the battery. No go. Tried tapping it with a hammer. Still wouldn't work. It looks like I am going to have to get a new fuel pump.

One of the metal fuel lines that runs through the car's channel is plugged. That is my next project. I have found some good posts on how to clean it out.

I am going to replace all of the rubber fuel hoses.

Here is my question: What else can I expect to have to replace given that fuel was never drained? And, will I be able to find these replacement parts?

I am going to get a rebuilt engine and I have the option of going with FI or carburetors. I would prefer to stay with FI, but I am concerned that I may not be able to find replacement parts.

[KTPhil]

Welcome!

Try for FI if possible. You can find replacement parts if you are patient. You probably will need to replace the fuel pressure regulator, so keep an eye out for those in the classifieds.

Consider a more modern pump; search for threads on this; include the words "ford ranger." Many have done this in lieu of rebuilding the original pump. In case you want the original worked on, contact Samba Member (Jim Adney) here as jadney, or email him at [email protected].

I recommend you start your own thread for your work getting your car back on the road.

[Kepler]

Thanks, KTPhil. I am going all in with FI. I appreciate the suggestions...very helpful.

[Mike Fisher]

We have lots of FI parts on our shelves!
Put up a WTB ad for anything you need.
It won't run with a clogged fuel return line. BTDT
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https://imgur.com/user/FisherSquareback/posts
69 FI/AT square Daily Driver
66 sunroof,67,70,71,71,71AT,72,72AT,73 Parts
two 57 oval ragtops sold
'68 Karmann Ghia sold

Society is like stew. If you don't keep it stirred up you end up with a lot of scum on the top! - Russ_Wolfe/Edward Abbey

[ibldrc]

[Bobnotch]

[knewknew]

Perhaps this has been asked before, but I could not find it in the search archive....

Question 1:
Is it ok to use fuel injection system cleaner (ie STP, Gunk, BG, etc.) with these old VW systems? Is there one that is preferred or one that should be avoided?

Question 2:
If using one of these cleaners, is it ok to use in conjunction with a Lead Substitute additive as well?

Thanks!
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1970 Squareback

[Tram]

[KTPhil]

I've used Techron additive with no ill effects. I wait until it's on sale at a FLAPS, otherwise it's pricey.

[knewknew]