Fuel Output Test

mreinsmith

Petty Officer 3rd Class
Joined
Jun 15, 2008
Messages
82
To test the fuel output, I took the following steps.

1 - I removed the fuel hose from the carbs
2 - I pumped the primer bulb and got full flow through the hose.
3 - I started the engine and the fuel output through the hose was far less than full flow (about a 1/4 the output) and it was pulsing.

From what I understand, pulsing is somewhat normal as long as it isn't spitting air,is that correct?

The other thing is the amount of flow, I wouldn't expect it to be as much as when you pump the primer, but what flow should i get?

I have the kit for the new pump on the way, I'll replace that and check it again. But I'd like to know what to expect from a "known good" pump.

Thanks

M
 

roscoe

Supreme Mariner
Joined
Oct 30, 2002
Messages
21,667
Re: Fuel Output Test

2-4 psi

it increases as rpm increase

you can rebuild for under $20
 
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