Fuel Pump Pulsator

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Sep 21, 2006 | 05:35 PM

Randy93

Thread Starter

Melting Slicks

Joined: Feb 2005

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From: Sebastian Florida

St. Jude Donor '06

Fuel Pump Pulsator

I was reading about how these can stop fuel pressure loss and vibration, but how does it work?
Also, does my car have one?
I looked in the Helms index and did not see it listed.

Sep 21, 2006 | 05:44 PM

RRT vette

Le Mans Master

Joined: Feb 2006

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From: Louisiana

Yes, your 93 has one. It reduces the fuel pressure variations that occur as the fuel injectors open and close, and to reduce operating noise.

Sep 22, 2006 | 12:53 AM

raisinbran

Instructor

Joined: Feb 2006

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From: rowlett tx

I replaced mine when my fuel pressure would drop off pretty quickly after shutting the engine down. Held the pressure for hours with the new one!

Sep 22, 2006 | 08:45 AM

RRT vette

Le Mans Master

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From: Louisiana

Quote:

Originally Posted by raisinbran

I replaced mine when my fuel pressure would drop off pretty quickly after shutting the engine down. Held the pressure for hours with the new one!

these is one of the item the FSM states will cause a decrease in fuel pressure after the pump turns off.

Sep 22, 2006 | 09:34 AM

kopbet89c4

Safety Car

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From: Poop land

I took mine off and used a rubber hose in place of it after changing my fuel pump. Without the pulsator, you can hear a lot more ticking from the injectors.

Sep 22, 2006 | 09:52 AM

mikey whipreck

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Quote:

Originally Posted by kopbet89c4

I took mine off and used a rubber hose in place of it after changing my fuel pump. Without the pulsator, you can hear a lot more ticking from the injectors.

Isn't that hard on the injectors (water-hammer effect)?

Sep 22, 2006 | 10:01 AM

Randy93

Thread Starter

Melting Slicks

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From: Sebastian Florida

St. Jude Donor '06

Is it inside the tank?

Sep 22, 2006 | 10:08 AM

kopbet89c4

Safety Car

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From: Poop land

Quote:

Originally Posted by mikey whipreck

Isn't that hard on the injectors (water-hammer effect)?

Probably would be more effective in knocking out deposits or impurities which sometimes cause injectors to fail. I like hearing my injectors knowing they are working all right.