What should the flow rate be coming out of the fuel pump:
A: When you short the safety switch
and
B: When you adjust the throttle while under way
For when the safety switch is shorted, I get a 15 second spurt of gas for every 30 seconds. The rest of the time it appears to be sucking air.
I just tried to purge the line and after running it for a good 20 minutes, long enough to make the (solenoid?) hot, it still does the same thing it's been doing for the last 20 minutes, sucking air half the time & spurting gas half the time. Is this normal? Will this cause problems when I put it into high throttle?
That's what I'm concerned about. It might be enough of a flow rate for low throttle, but not enough for high throttle. Does high throttle cause the pump to suck harder while at the same time allowing the engne to intake more fuel, vs: low throttle causing the pump to suck less fuel? Or is the fuel pump working at a constant pressure and the only dfference is the intake of the fuel into the engine?
Also, what happens with the excess air that's in the fuel line when it gets sucked into the carburetor? Does the carburetor have amechanism to deal with that, or will it cause the engine to perform badly?
If that air shouldn't be in there, how do I get it out? I lost 1/4 of a gallon purging the air I got out. If I left the switch shorted for 2 hours, would the air eventually all get purged out, or would he air pockes in the various twists in the hoses always be there contaminating the fuel. Someone mounted a tank-bypass switch and the water-remover filter so that it's not ontinuous slope down, but it's on a roller-coaster up & down & up & down again. Is this bad for the engine?
Thanks,
LL
A: When you short the safety switch
and
B: When you adjust the throttle while under way
For when the safety switch is shorted, I get a 15 second spurt of gas for every 30 seconds. The rest of the time it appears to be sucking air.
I just tried to purge the line and after running it for a good 20 minutes, long enough to make the (solenoid?) hot, it still does the same thing it's been doing for the last 20 minutes, sucking air half the time & spurting gas half the time. Is this normal? Will this cause problems when I put it into high throttle?
That's what I'm concerned about. It might be enough of a flow rate for low throttle, but not enough for high throttle. Does high throttle cause the pump to suck harder while at the same time allowing the engne to intake more fuel, vs: low throttle causing the pump to suck less fuel? Or is the fuel pump working at a constant pressure and the only dfference is the intake of the fuel into the engine?
Also, what happens with the excess air that's in the fuel line when it gets sucked into the carburetor? Does the carburetor have amechanism to deal with that, or will it cause the engine to perform badly?
If that air shouldn't be in there, how do I get it out? I lost 1/4 of a gallon purging the air I got out. If I left the switch shorted for 2 hours, would the air eventually all get purged out, or would he air pockes in the various twists in the hoses always be there contaminating the fuel. Someone mounted a tank-bypass switch and the water-remover filter so that it's not ontinuous slope down, but it's on a roller-coaster up & down & up & down again. Is this bad for the engine?
Thanks,
LL
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