I have a 900SS with 32mm Dellortos and it was running fine and suddenly the rear cylinder goes rich. I expected a bad needle and seat or dirt causing the float to hang, but it's not to be. Insides are clean all jets in place and the float is not taking on fuel. I pulled the choke out and had a look and everything seems as it should be. Is there something that I might miss? I have gone over the carb and can't see anything wrong - so I thought I'd see if anybody else has been through this one.
Thanks
Dellorto suddenly gone rich:
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- Cucciolo - the Lil Pup
- Posts: 18
- Joined: Tue Sep 30, 2008 4:56 pm
I had a problem with the choke piston failing to seal properly. A sympton of this was that I could lean off the mixture screw all the way and the cylinder would still run (in fact it ran better!) as fuel was being delivered by the enricher circuit. I cleaned out the choke void with a wooden dowell and very fine wet and dry abrasive paper - same treatment to the choke piston - that solved the problem.
Yep. That problem too. My rubber seal was fine. The plunger was hanging up in the void due a combination of a small burr on the sharp edge and some gunk on the piston. It certainly doesn't hurt to carefully prise out the rubber seal and turn it over. Having said that, i subsequently bought a new pair of plungers for $10 Aussie for the pair. (Apparently you cant buy just the rubber seal)
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- Cucciolo - the Lil Pup
- Posts: 18
- Joined: Tue Sep 30, 2008 4:56 pm
Aha! That sounds right. I took the choke piston out and saw that imprint in the rubber. Also the rubber still seems pliable. I will try turning it over and if that doesn't work then I'll just get a new piston. Thanks as I thought people would tell me to check the float and so on - which I did.
Many thanks and I will report back once it stops raining...
Many thanks and I will report back once it stops raining...