Question about 1993 Toyota Corolla

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How to change fuel filter.

Mechanic tried to open the old fuel filter but he could not open. Can you advise what could be the problem? Should I leave the old one in tact and return the new one?

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  • Toyota Master
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Unless you have a definite problem with the driving of the car, do NOT change the fuel filter. The metal of the filter and the pipes going to it are not the same metal, and they interact negatively with one another; they kind of "weld" themselves toigether...What this means is that if you force the filter off, you WILL damage the threads on the fuel pipe, and you will have to replace it, the pipe from the filter to the fuel tank. If you car is running OK, take the new filter back, and get a refund. Replacing the fuel pipe is a VERY expensive job. Trust me. I unfortunatly have done over 20 of these, for the same reason that you have, and I HATE this job.

Posted on Oct 15, 2008

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Posted on Jan 02, 2017

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What could cause the engine not to stay running after the fuel filter was replaced? Even after fuel pump was replaced?


From remote site, it is hard to tell what is the root cause, and change pump was done in proper order -- you should post the problem before replacing fuel pump.
Here is what I will do, assume you can do a little by yourself.
Changing fuel filter should be easy by disconnect fuel hose (pipe) from the fuel filter . Since ASE mechanic did job in your house, I assume the old fuel filter is still in your hand. Change it back (replace new filter with your older one) to see if your car will work as before. This supposed to be done before replacing the fuel pump.
If older filter works, then you knew the new filter is the root cause. This could be resolved by replacing another new filter. If the problem appear again, leave the new filter in for over night to see if the new filter will work on the next day (you could use exiting new filter to avoid buying another filter, unless you will get a different brand one). If not, the choice is to use older one for a while when trying figure why new filter does not work.

If old filter does not wok either, then something is in forwarding fuel line between fuel filter and fuel ejection system. Then, that section needs to be cleaned. Assume the pressure is measured at connection between forwarding line and fuel filter.

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