on vro fuel pump systems what does the pusle limter do?

[Bob427]

whats this part used for and why do they sell a replacement

do they ever go bad

thanks Bob

 

[Joe Reeves]

Re: on vro fuel pump systems what does the pusle limter do?

The only time I've ever replaced one is when replacing the VRO pump.

It restricts the strength of the pulse to a certain point.

It prevents crankcase flame from reaching the VRO.

 

[Bob427]

Re: on vro fuel pump systems what does the pusle limter do?

so basicly its just a restricter and you can see right through it

 

[guitman32]

Re: on vro fuel pump systems what does the pusle limter do?

The little elbow that connects the pulse limiter to the block was cracking on my outboard, so I replaced it and inspected the pulse limiter...it looked fine off an '89 engine.

Also of note is that there are two colors (a blue and a red) if I remember correctly...the newer one is the blue one.

Yes you can see light shining through it...

 

[Dhadley]

Re: on vro fuel pump systems what does the pusle limter do?

The very early ones had a mesh, like a Brillow pad, in them. Then they used a thin piece of metal to block the flame which still allows the pulse to reach the diaphram.