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x96
V4 Fanatic

Spain
415 Posts

Posted - 27 May 2018 :  17:49:31 Show Profile Reply with Quote
Time to repair the driver lock. The barrel twisted freely, it was enough to add a plastic washer





Héctor

Edited by - x96 on 27 May 2018 17:49:58
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x96
V4 Fanatic

Spain
415 Posts

Posted - 27 May 2018 :  17:52:48 Show Profile Reply with Quote
And to restore the fuel sender.



It looks very rusted but the steel is strength enough to continue working.





Héctor

Edited by - x96 on 27 May 2018 18:03:21
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x96
V4 Fanatic

Spain
415 Posts

Posted - 27 May 2018 :  17:56:05 Show Profile Reply with Quote






Héctor
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x96
V4 Fanatic

Spain
415 Posts

Posted - 27 May 2018 :  18:02:19 Show Profile Reply with Quote
The circuit for the warning light was corroded at the end. I added solder wire



and an additional wire to improve the earth contact.



The rust was removed with sand paper and converted with rust converter.



Héctor
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x96
V4 Fanatic

Spain
415 Posts

Posted - 23 Oct 2018 :  18:48:19 Show Profile Reply with Quote
This weekend I worked a bit on the car and was very productive, finally I solved the solex carb problem.

The problem was simplier than expected, nothing related with vacuum, I discovered that the calibrated pin was missing, now I remember that something fell down while cleaning the carb and at that moment I didn’t realize it was that important pin. For this reason too much petrol was arriving to the main barrel.

It’s crazy how much time I’ve employed to arrive to this point but It was difficult for me to accept that an incorrect vacuum was there, at end a carb is not that complex. I prefered to continue searching for, in other words, just a very stubborn head.

In any case I have changed the solex and put another from two in better condition that Melle offered me for free, thanks mate.

Now I have another two carbs for parts and a nice idle. I will adjust it correctly when I can drive the car.







I can jump to the next problem, the gears.

Héctor
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melle
V4 Guru

United Kingdom
3830 Posts

Posted - 23 Oct 2018 :  21:04:04 Show Profile Reply with Quote
Glad you got it sorted!

www.saabv4.com
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x96
V4 Fanatic

Spain
415 Posts

Posted - 21 Feb 2023 :  14:12:36 Show Profile Reply with Quote
Four years without posting, it's time to update.

Finally the solex didn't work. It was correct what I did on it removing the vacuum leaks and adding the mixture rod but the main problem remained, it continues flooding and now I'm very sure the problem is the booster. In the carb tank there is a booster valve that opens under big vaccum caused by strong acceleration and I think if this valve doesn't keep close in normal situations floods the engine.
But before I arrive to this guess I changed the carb for a weber 32/36 DGAV that is almost plug and play.

[/url]



Héctor
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Derek
V4 Guru

United Kingdom
2187 Posts

Posted - 22 Feb 2023 :  12:45:16 Show Profile Reply with Quote
The picture might show a test set-up but I think that is a pusher pump and should be under the back seat close to the tank. These run at about 4 to 4.5 psi. When the electric pump is in the engine bay a puller pump should be used. These run at about 1.5psi. In the pic the pump would be feeding the carb with about 4psi, maybe more, and the needle valve won't like that. When the float drops and the needle opens it is likely to squirt in too much fuel and cause flooding. Yes, check the float levels too.
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UK_Sub
V4 Guru

United Kingdom
2555 Posts

Posted - 23 Feb 2023 :  10:20:14 Show Profile Reply with Quote
I've got a Facet pump under the back seat that runs at 1.5psi, which is prefectly OK.

The filter in the photo above, might be slowing that pressure down a bit perhaps.
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x96
V4 Fanatic

Spain
415 Posts

Posted - 28 Feb 2023 :  16:23:58 Show Profile Reply with Quote
Thanks for the comments, very helpful because there are several malfunctioning happening at the same time that gets me crazy. I had changed the points and condensor that probably didn't work but the fuel delivery had also issues. That is why I have put the electrical for testing.
I bought This electrical pump time ago thinking it was low pressure for carburators. I don't like that much for its complexity and danger but the mechanical is not working properly, after a while running, it stops giving fuel. I have openned it and looked ok.











Héctor
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Woody
V4 Guru

United Kingdom
2758 Posts

Posted - 28 Feb 2023 :  23:05:03 Show Profile Reply with Quote
Internals of fuel pump need cleaning out, ensure the rubber seals are seating correctly.
Can you get to the one the other side? Might be prudent to place a fuel filter between fuel tank and the fuel pump.
What powers this pump as it seems to be placed on the engine block in place of the mechanical type and the pushrod
being removed.
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Derek
V4 Guru

United Kingdom
2187 Posts

Posted - 01 Mar 2023 :  13:32:02 Show Profile Reply with Quote
There are many posts here about the pump push rod. It is hardened at one end. Tends to look a bit yellow due to the hardening. This end has to run on the cam. If reversed the non hardened end can wear. The rod is then shorter and will work the pump diaphragm less. You will find the proper length on one of the previous posts. Do a search.
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melle
V4 Guru

United Kingdom
3830 Posts

Posted - 01 Mar 2023 :  17:44:42 Show Profile Reply with Quote
Also: make sure the gasket between the block and the pump isn't too thick. I've never had much luck with aftermarket mechanical pumps, apart an from Effbe one, which was excellent.

www.saabv4.com
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x96
V4 Fanatic

Spain
415 Posts

Posted - 03 Mar 2023 :  13:27:55 Show Profile Reply with Quote
I didn't notice I could dismantle more the pump

I will check again the rod and the internal of the pump. I did the gasket myself as I lost the old one but it is made of thin paper and when screwed, I notice a pressure to the pump, meaning the rod is pushing.

It was a bit dirty inside but it was working with a tank full of debris and rust with a filter in between that could not filter everything, in fact, I thought it was partially clogged.

I have checked the pressure of the pump but I never used the tester and I don't know if I'm doing correctly or if it works as it should.

When connected and pump running, it slighly has 0,2 bar and when the hose is folded arrives up to 0,6 bars.





https://youtu.be/UeiwJDzXj7U

It doesn't seem to have a high pressure.

Héctor

Edited by - x96 on 03 Mar 2023 13:31:39
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Derek
V4 Guru

United Kingdom
2187 Posts

Posted - 03 Mar 2023 :  20:03:39 Show Profile Reply with Quote
Video shows the pump to be giving very strong pressure. Picture shows about 10 psi when 1.5-2 psi is about right.
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