ENGINE ONLY STARTS WITH STARTING FLUID FREE

Because of this, a new engine may be hard to start for the first time. When you rebuild an engine all the parts are new and rough and don't really know each other very well. This, in turn, will clear the excess gasoline out of the engine. That means only air, and no gas is drawn into the engine. This creates a zero vacuum condition in the throat of the carburetor. If you put on the choke or enriching circuit and find that you have put too much extra gas into the engine, flooding it, you can clear the engine by opening the throttles wide open and cranking the engine. My Norton 750cc twin would always start within three kicks using this method. Now open the throttle about 1/8 of a turn and kick. With your thumbs, push the float plunger on the side of the carb (also called a float tickler) down and hold it down till your thumbs become wet with gasoline. Turn the gas and ignition on but don't put on the choke. Older British twins like Norton, Triumph, and BSA require a staring drill that is just a bit different. You will just have to experiment with each engine. Perhaps open the throttle a bit more or less. As an engine ages and piles up the miles you may need to vary the starting drill just a bit. Some carbs will have both a choke and a float plunger. Then open the throttle about 1/8 to 1/4 and then kick or hit the button.

If you have a carburetor that only has a float plunger, you will need to hold the plunger down till the carb floods.

Sometimes, the choke lever will have a spot to attach a cable too. The choke can be operated by a lever or a cable. Turn on the ignition and fuel, put on the choke, open the carburetor throttle 1/8 to 1/4 and hit the starter button or kick start the engine.

If you have a choke type carburetor the starting drill is this.

Sometimes the plunger will be activated by a lever or a cable. If you open the throttle any it will prevent the enriching circuit from working properly. Turn on the ignition and fuel, pull the enriching lever or plunger, leave the throttle closed, and hit the starter button or kick start the engine.

If you have an enriching circuit type carburetor the starting drill is this.

Motorcycle carburetors have either an enriching circuit, a choke or a float plunger. Because a cold engine doesn't vaporize gas as well as a hot one, you must put in a larger quantity of fuel to get enough vaporized gasoline to start the engine. A hot engine quickly vaporizes fuel from the carb. For this reason most engines require a richer then normal fuel mixture to start from cold. Fortunately, we usually do not have to start our bikes at forty below but we do have to start our engines when they are cold.

In fact, you can put a lit match out in it. Bush pilots who have crashed in the Arctic report that gasoline will not start a fire in forty below zero temperatures. The colder the engine is, the harder it is for gasoline to vaporize. Gas will not burn unless it is in a vapor form. The reason for this is that cold gas does not vaporize well. Each engine has a starting procedure or drill. It should be easy, but sometimes it isn't.

ENGINE ONLY STARTS WITH STARTING FLUID FREE

I would suspect Fuel pump issue, be its FREE to test TPSĬlear Flooded engine is a good thing to know about for testing other things as wellĪnd I use it every morning to start my high mile 4.Starting an engine. So if TPS was shorted or its wires, so sending 4.5-5.0v to computer with key on.then no injectors when cranking, but injectors would start to work if you used starting fluid, RPMs above 400 If RPMs should go above 400 then computer exits clear flooded engine mode and injectors start working, engine cranking speed is 200rpms If engine is at 0 RPMs(off), and TPS is at 4.5-5.0volts(WOT) the computer starts Clear Flooded engine mode, which means it leaves spark on but turns fuel injectors OFF, to.clear a flooded engine when you crank it over TPS normally sends back under 1 volt when throttle is closed, and 4.5volts when throttle is Wide Open(WOT) Unplug the TPS(throttle position sensor) 3 wire connector and see if it starts on its ownĪll fuel injected engines have a 'Clear Flooded Engine' Mode in their computer

Engine only starts with starting fluid