The Split Screen Van Club
You are viewing the Split Screen Van Club forum archive.
The forum archive is read-only.

Unfortunately in 2021 the Split Screen Van Club forum suffered a ransomware attack and lots of the forum data was lost.
What threads that have been recovered are now searchable on this site. Some threads may be incomplete and some images are still being recovered.

Forum archive search

Forum Archive > Technical
1

Solex H30/31 problems

Solex H30/31 problems

by CliveG » Wed Sep 16, 2020 7:21 am
Hi everyone,
Picked up my first Split only broke down 3 times on the way home and can't start at all how. It sometimes starts but stalls within a minute or two, it even did this while hot an hour or two into the drive home a strong smell of fuel everytime. I have bought a rebuild kit but this Solex H30/31 carb is a bit of a mistery what is this lever for and should if be floppy, is there supposed to be a spring here?

Thanks for your help.
CliveG
Registered user
Posts: 1
Joined: Tue Sep 15, 2020 4:55 pm

Re: Solex H30/31 problems

by BJ1 » Tue Oct 06, 2020 8:21 am
Looks like a stock H30/31 - the lever is fine. Most likely the needle valve in the float camber is not closing properly, possible due to crud in the fuel lines. Renew the fuel hoses, check the needle valve and remove and clean the idle jet which could also be blocked.

And get rid of that useless pancake air filter. Put a proper original filter back on the bus with a hose from that to the case oil filler otherwise you will always have oil leaks due to high case pressure.
BJ1
SSVC Member
Posts: 3539
Joined: Thu Aug 30, 2007 8:12 pm

Re: Solex H30/31 problems

by DOUGAL » Sat Oct 17, 2020 10:10 am
You also have an aftermarket fuel pump.
Check the fuel pressure to the carburettor. This might be too high.
Can't remember but I think it should be 3 PSI.
DOUGAL
SSVC Member
Posts: 1453
Joined: Thu Apr 06, 2006 3:13 pm

Re: Solex H30/31 problems

by BJ1 » Sat Oct 24, 2020 1:05 pm
DOUGAL wrote: Sat Oct 17, 2020 10:10 am You also have an aftermarket fuel pump.
Check the fuel pressure to the carburettor. This might be too high.
Can't remember but I think it should be 3 PSI.
That pump is fine for H30/31 carb. You only need lower pressure for Weber carbs like ICTs.
BJ1
SSVC Member
Posts: 3539
Joined: Thu Aug 30, 2007 8:12 pm

Re: Solex H30/31 problems

by DOUGAL » Sat Oct 24, 2020 9:10 pm
BJ1 wrote: Sat Oct 24, 2020 1:05 pm
DOUGAL wrote: Sat Oct 17, 2020 10:10 am You also have an aftermarket fuel pump.
Check the fuel pressure to the carburettor. This might be too high.
Can't remember but I think it should be 3 PSI.
That pump is fine for H30/31 carb. You only need lower pressure for Weber carbs like ICTs.
I always thought it had to be 3PSI. Good to know that those pumps are ok.

Cheers,
Gertjan
DOUGAL
SSVC Member
Posts: 1453
Joined: Thu Apr 06, 2006 3:13 pm
1