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Old 07-08-2015, 03:07 PM #1
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Gas leak around fuel pump on top of gas tank
2000 Toyota 4Runner SR5 3.4 V6

I discovered a small amount of gas leaking from the top of my gas tank around the fuel pump. The previous owner replaced the fuel tank 5 years ago with a tank from a 1998 4Runner. The car turns over fine so Im assuming the pump itself is working fine. Somehow the seal around the pump is not. Is there a replacement gasket I can buy to seal the pump into the tank? Or could I get some silicon sealer or something and just spread that around the edge of the pump?
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Old 07-08-2015, 03:56 PM #2
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First determine that it really is the rubber gasket between the plate and the tank that has lost integrity. No rotten/rusted fuel lines/hoses in the area?
As I recall, the gasket is available as a separate part; check one of the online Toyota parts dealers that has the parts drawings to see it/price it.
Camelback Toyota says it's $9.49.
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Old 07-08-2015, 03:59 PM #3
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Quote:
Originally Posted by pluton View Post
First determine that it really is the rubber gasket between the plate and the tank that has lost integrity. No rotten/rusted fuel lines/hoses in the area?
As I recall, the gasket is available as a separate part; check one of the online Toyota parts dealers that has the parts drawings to see it/price it.
I wasn't sure if there was a gasket or not. All my fuel lines look to be in good shape to me.
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Old 07-08-2015, 05:12 PM #4
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There is an access panel under the carpet drivers side rear seat. It is used to unplug the fuel pump/sending unit, but is a great window to see what is really leaking.

My leaks were the fuel return and sending lines. Swapped the fuel sending unit bracket and new rubber gasket out. I did have to drop the tank.
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Old 07-08-2015, 11:20 PM #5
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77169-60010 gasket, fuel suction
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Old 07-09-2015, 08:51 AM #6
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9 times out of 10 it's the metal lines coming out of the pump that are rusted and leaking. Very common problem, just went through that on my Trooper.
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