Search found 1185 matches

by Durango2k
Thu Apr 01, 2021 10:47 pm
Forum: Technical
Topic: Float level ? S1 4.2 does not start
Replies: 49
Views: 1573
Germany

Re: Float level ? S1 4.2 does not start

That would be SAE20W50, then ?

Carsten
by Durango2k
Thu Apr 01, 2021 5:52 pm
Forum: Technical
Topic: Float level ? S1 4.2 does not start
Replies: 49
Views: 1573
Germany

Re: Float level ? S1 4.2 does not start

I have the weber tool / for the SM...I‘ll use it.

Currently I have ATF in the carbs, and not SU‘s own oil. And I‘ll check for the 1.5 mm jet height below the bridge.

Carsten
by Durango2k
Wed Mar 31, 2021 6:45 am
Forum: Welcome!
Topic: New Frog eater
Replies: 7
Views: 581
Germany

Re: New Frog eater

:yeahthat:
by Durango2k
Tue Mar 30, 2021 6:45 pm
Forum: Welcome!
Topic: New Frog eater
Replies: 7
Views: 581
Germany

Re: New Frog eater

Ha,

Ici c‘est un autre Citroen SM...vive Robert Opron !

Carsten (allemand)
by Durango2k
Fri Mar 26, 2021 6:32 pm
Forum: Technical
Topic: Float level ? S1 4.2 does not start
Replies: 49
Views: 1573
Germany

Re: Float level ? S1 4.2 does not start

Tried to start it today, and it did not - until I unscrewed the dampers on the domes. Then instant success. What would be a remedy for this - where to look ? Does it mean „worn pistons“ so „not enough vacuum“ above them ? Or too strong springs, or anything else I should look at ? I drove it today on...
by Durango2k
Sun Mar 21, 2021 6:25 pm
Forum: Technical
Topic: Float level ? S1 4.2 does not start
Replies: 49
Views: 1573
Germany

Re: Float level ? S1 4.2 does not start

Here‘s the U1 photo I promised. Hope it gets through. These are longer I think, and the tip is different to the UM. I tried to measure the diameter on top and tip, and they differ as well. https://i.postimg.cc/66gc22cj/A6-A15-F33-4853-4-C2-F-A16-B-D96-A140-C9-F44.jpg https://i.postimg.cc/02SfpkH8/F6...
by Durango2k
Sun Mar 21, 2021 6:09 pm
Forum: Technical
Topic: Float level ? S1 4.2 does not start
Replies: 49
Views: 1573
Germany

Re: Float level ? S1 4.2 does not start

Okay, so now I think I have to adjust it better. I do have a colortune, and of course it is a 3 carb setup, each carb serving two cyls. First - I think - I say I should warm it up by running, say, 5 minutes in idle outside, checking the fan comes up ? I have the lawnmower blade fan with the original...
by Durango2k
Sun Mar 21, 2021 5:45 pm
Forum: Technical
Topic: Float level ? S1 4.2 does not start
Replies: 49
Views: 1573
Germany

Re: Float level ? S1 4.2 does not start

Success ! I swapped the needles for an old set of UM I found in a small plastic container (someone must have given me those I don‘t recall, because I also found my old set), I put the springs back, checked everything another 5 times. Then I pumped out the old fuel via a short hose behind the fuel fi...
by Durango2k
Sun Mar 21, 2021 1:52 pm
Forum: Technical
Topic: Float level ? S1 4.2 does not start
Replies: 49
Views: 1573
Germany

Re: Float level ? S1 4.2 does not start

It never ran since I owned it. I bought a complete wreck in 2008.

The needle is not UI. It is U1. I‘ll take better pictures. And I‘ll compare the U1
(as I possibly can...) with the old needles I took out in early 2009.

Carsten
by Durango2k
Sun Mar 21, 2021 11:33 am
Forum: Technical
Topic: Float level ? S1 4.2 does not start
Replies: 49
Views: 1573
Germany

Re: Float level ? S1 4.2 does not star

.... regarding springs and needles, I just want to rule out anything that might sum up. A bit old fuel here, too thick needle there, add a weak battery... and thats it. More google found AUC 2107 as part number which is light blue/black, 4.5 oz at 3,875=98 mm. That would 127 grams, I get 110 at 98 m...
by Durango2k
Sun Mar 21, 2021 11:32 am
Forum: Technical
Topic: Float level ? S1 4.2 does not start
Replies: 49
Views: 1573
Germany

Re: Float level ? S1 4.2 does not start

Oh and did I say I do all the testing without the air filter + plenum ? Maybe that is needed because it richens up the mixture, because it is harder to suck air / more fuel comes out ?

Carsten
by Durango2k
Sun Mar 21, 2021 11:15 am
Forum: Technical
Topic: Float level ? S1 4.2 does not start
Replies: 49
Views: 1573
Germany

Re: Float level ? S1 4.2 does not start

Whilst at home, after tomato + mozarella, I checked the SU springs. I don‘t know which color / force vs length values I need, I thought red, but just found SC parts show black/ blue... anyway, I tested as if they were red springs: The length of a red spring should be 2 5/8 which is 66.7 mm, at 4.5 o...
by Durango2k
Sun Mar 21, 2021 8:25 am
Forum: Technical
Topic: Float level ? S1 4.2 does not start
Replies: 49
Views: 1573
Germany

Re: Float level ? S1 4.2 does not start

Fluel age is indeed 3 or so years. I can try to swap that of course, and put this stuff into the Traction, it will eat that no mourning....
by Durango2k
Sun Mar 21, 2021 7:57 am
Forum: Technical
Topic: Float level ? S1 4.2 does not start
Replies: 49
Views: 1573
Germany

Re: Float level ? S1 4.2 does not start

I did a complete rebuild 9 yrs ago....they never ran. It was the first I did after the car arrived. I bought a repair kit from Joe Curto, changed the floats (checked them again yesterday). So, I am very certain to meet all the requirements. I can see that when I crank the engine (no windshield fitte...
by Durango2k
Sat Mar 20, 2021 10:40 pm
Forum: Technical
Topic: Float level ? S1 4.2 does not start
Replies: 49
Views: 1573
Germany

Re: Float level ? S1 4.2 does not start

OK setting needles: I did: - loosen the setscrew in piston - use 0.40 mm feeler gauge in nut on needle - push needle into piston until blocked by feeler gauge - from memory they don´t have a "shoulder", just a slot which fits the 0.40mm feeler blade - tighten setscrew. Should I continue with the U1 ...
by Durango2k
Sat Mar 20, 2021 9:16 pm
Forum: Technical
Topic: Float level ? S1 4.2 does not start
Replies: 49
Views: 1573
Germany

Re: Float level ? S1 4.2 does not start

I have now been there, and found a few things. - one of the float levels was way out- I set them all to 11 mm, and I now have fuel on all thre around 2 mm below the bridge level. - I found one thick idle screw was out by 3 turns not 2 - the needles are stamped U1, not UM. They are all new, iirc from...
by Durango2k
Sat Mar 20, 2021 4:32 pm
Forum: Technical
Topic: Float level ? S1 4.2 does not start
Replies: 49
Views: 1573
Germany

Re: Float level ? S1 4.2 does not start

Given the size of the compartment, is a uranium batterie needed, then ?

The one I have cannot do that. Buy a Red Top 4.2 first ?

Maybe I put my Diesel E (class) next to it and use my 25 mm solid wires ?

Carsten
by Durango2k
Sat Mar 20, 2021 11:43 am
Forum: Technical
Topic: Float level ? S1 4.2 does not start
Replies: 49
Views: 1573
Germany

Re: Float level ? S1 4.2 does not start

.... does anyone have the spring parameters for the large damper spring in the dome ? I remember last time I noticed that the centre piston did move up and down a bit, some mm, when it ran on spray for 5 seconds, but the outer two did not. Maybe a good idea to compress them to a certain hight and me...
by Durango2k
Sat Mar 20, 2021 11:25 am
Forum: Technical
Topic: Float level ? S1 4.2 does not start
Replies: 49
Views: 1573
Germany

Re: Float level ? S1 4.2 does not start

It never really ran after full rebuild. It runs on spray - my son said it my also be timing far off, because spray is more flameable / more tolerant. But where do you start.. iirc I set it it to -10 (per book), then turned the dissi until spark 6 (frontmost) just fired and thats it. That should do i...
by Durango2k
Sat Mar 20, 2021 10:21 am
Forum: Technical
Topic: Float level ? S1 4.2 does not start
Replies: 49
Views: 1573
Germany

Re: Float level ? S1 4.2 does not start

Ok, I‘ll re- read them... have them somewhere here as well.

Carsten