Liquifire 340 flooding problem

Deleted User · Post by **Deleted User** » Thu Jun 08, 2006 5:30 am

Hey all

I have a 1976 Liquifre 340 flooding problem. I bought the sled a while ago but just got around to messing with it. I knew of the problem when I bought the sled. It runs good but when you let the sled sit for more than a day it will flood itself. So much so that you cannot start it. Its all I can do to pull it over. But when you clear the cylinders it will start right up. There is a fuel shutoff valve on the main line but either way open or closed it will still flood itself. I have a couple of ideas of what it could be. Just wondering if anyone else has had a similar experience.

Thanks
Nick

400brian · Post by **400brian** » Thu Jun 08, 2006 2:50 pm

This problem has been talked about a lot here. Apparently your fuel valve is not shutting off properly. Also, the fuel inlet valve in the carb (the needle and seat ) is not shutting off tight, and allowing fuel to run into the case.

Clean, repair, or replace.

harleysportster · Post by **harleysportster** » Thu Jun 08, 2006 6:54 pm

This is also a good oportunity to clean the carbs since you will have them apart to replace the needle/seat. You can test the needle/seats if you have a small hand-held air pump with a gage on it. Hook up the air hose to the fuel inlet, turn the carb upside down and inflat to about 5-7 lbs. If it will not hold the air, they need replaced. Many vendors sell a carb testing tool for this purpose.

JDFanPa · Post by **JDFanPa** » Fri Jun 09, 2006 10:11 pm

You know what they say about learning something new everyday. Thanks for the tip Harley

Deleted User · Post by **Deleted User** » Mon Jun 12, 2006 11:18 am

I took apart the carburetors the other day and I do have a few questions.

1.How do you get the float arm off? So I can get the needle and seat out?
2.I want to buy a rebuild kit/needle and seat but I have no idea what carbs it has on it.
3.Anyone have the proper jetting/specs for the carb

I tried to use the search feature but I came up short.

I appreciate all the info.
Thanks Nick

I am sure I will have a few more questions before I am done. LOL

harleysportster · Post by **harleysportster** » Mon Jun 12, 2006 12:12 pm

The float arm is held in place by a shaft that has a light press-in fit. Tap it towards the end with the wide head using a small punch and hammer. Once the press-in fit comes loose, the shaft will come right out. The type of carb is a alumimun spigot type Mikuni carb. The needle/seat will unscrew from the base of the carb. The size of the seat should be stamped on it. The jetting specs can be found in the FAQ section of this forum.