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Mechanic switched out cracked gas tank and to seals, once all replaced, gas gauge etc.. didn't work, tried sensor, still didn't work, mechanic can't figure out what to donext? Please help!

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Well the pump must be working so i would say he eather left the ground off the fuel sending unit or it was damaged when replaced tank, Should be 4 wires on pump 2 being to operate the pump the other two operates the gague Best of luck to you. Hope this help's some.

Posted on Apr 09, 2011

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I assume you have an EVAP code. A smoke test is what is used to determine if the fuel system has a leak. I would look into another opinion.

Posted on Apr 09, 2011


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Every few minutes the computer tries to vent the tank to the vapor canister and the engine which would be affected by the leaking gasket.
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My gas gauge on my honda civic ex 2000 has been broken since ive had it. it reads at over a full tanks all the time. however the temp gauge next to the gas gauge works perfectly and all the other gauges....

Sorry, but that is the problem and is HIGHLY recomended...

Take it from me, this unit is submersed inside a tank of fuel.
There are electrical wires in there that could have a problem and cause a serious explosion.

The fuel tank will need to be removed, usually this requires draining it first. Once removed, the old float and sending unit are removed, a new one installed and new gasket seal rings replaced.

Totatly worth having it done.

If you cant afford to go ahead and pay the man what he is asking, be careful hiring some shade tree mechanic with less knowledge or experience with it.

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First, fuel tanks don't crack. They are soft and bend.
If the tank is leaking, it's possible that there was a weak seam that opened as the tank was being removed or lifted back into place. Whose fault? no clue as I'd have had to watch the job to know that.
If the area that is leaking shows signs of rust through, it should have been noticed but not always.
Good part though is that it is a common vehicle and there are lots of available tanks to be found in local scrapyards and shouldn't cost much to replace it.

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