Troubleshooting Gas Gauge, Fuel Float & carb -Suzuki & others

Troubleshooting Gas Gauge Fuel Float & carb -Suzuki & others. When troubleshooting a gas (fuel( gauge that is not working, the first thing to check is the wire going back to the sending unit on the gas tank. Often, either that wire is broken or the connection to the sending unit is corroded. If you ground this wire and have the ignition key on, your fuel (gas) gauge should show full. If is does not read full when you ground the wire to the sending unit, than the gas gauge is likely the problem. Usually the sending unit is the problem versus the gauge. Modern gasoline with harm fuel system components more so than the gasoline of the past, especially if the gasoline sits a while. Modern gasoline has a shorter shelf life than the gasoline of the past. I am showing a float assembly or fuel tank float (sending unit) for a 1985 Suzuki Samurai, Jimny 1300, SJ413 or JA51. I have a Weber Progressive RGM K601 carburetor on this Suzuki. Weber (actually Redline - which is a clone) claims this carburetor will perform better than the Weber 38 and still get better gas mileage than the Weber 32/36. It may be the idle is poor and this likely due to a vacuum leak because either the base of the carburetor and/or adapter is not machined perfectly flat. Also the gasket they use is too thick and a thinner gasket would be more leak proof. Also there is one gasket sealant that works great for carburetors and intake manifolds and that is Permatex high tack spray-a-gasket 99MA part no. 80065. That is only thing I trust. Use the gasket and the sealant, but do not use a thick gasket. From my research the best carburetor for the 1985 Suzuki Samurai Jimny 1300 SJ413 JA51 is the 1974 through 1978(0) Toyota Aisan carb that was found on the 1166cc engine. It performs better than the stock Suzuki Samurai carb and can go up steep hills without flooding. They claim that when using this Aisan carb and a fuel pressure regulator set at 2 1/2 lbs you can climb angles up to 60 degrees, which is very close to tip-over. So it ca handle anything and still gets better gas mileage and performance. It should be part no. TOY250 at nationalcarburetor.com