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Originally Posted by stevebfl
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If you think about that, you will see that the amount of fuel used in each stroke is quite small. It won't spurt. Even if the airflow plate is held way down the flow will be small.
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With the greatest respect to Steve.....I take issue with the statement that there is little fuel flow even with the air flap pushed down.
With most CIS system operating with the correct pressure,
there is enough fuel coming out of the injectors to support 200 hp.to 400 hp.
Without the injector lines installed on the fuel head the amount of fuel will be more than enough to support ignition of the fuel.
Personally, I do not suggest our friend just allow raw fuel flow freely out of the fuel head without doing something about the risk of fire.
There also exists the accumulator pressure in the system. Rupture of this supply with a flame present will generate more heat
due to the fuel spraying without you being able to stop it.
Ask me how I know !
Cranking the engine and then cracking an injector line is usually enough to see if fuel pressure is present.
Pressing down on the air flap checking for resistance will also tell if pressure is being built up
I would never encourage someone to 'raw fuel flow test' a system due to the chance of fire.
But there again, I rode a motorcycle at 206 mph too....!
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