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另外问下换完fuel pump 相当于连pump filter都换了是吧，我看到那是一个总成，包括了filter了是吧？谢谢！

waterdai 写了： 2024年 7月 4日 14:33 工作量太大估计够呛，且我工具也不齐全。那就先看看换fuel pump 怎么样。如果要能进一步确认它不行就更好了

I always prefer to confirm if something is bad before replacing it. Lean code is especially hard to trouble shoot.
Are you talking about a 6 cylinder Camry or 4 cylinder?

To test a fuel pump, you can buy a $20 fuel pressure gauge. It is better to test pump vacuum than pressure. However, pressure is more trivial to hook up. If you do not want to buy a pressure gauge, unhook the fuel line from the injector rail. Put the fuel line opening into a plastic bottle, put the key in ignition. Fuel should start to go into the bottle. Look for any air in the fuel. If you see the fuel being aerated, your pump is shot.

(note that aerated fuel problem can probably be fixed by a pump rebuilt with some new gaskets. You do not really have to replace the pump.)

谢谢！我的车是四缸的，我努力下，谢谢

嗯嗯，我也是希望在动手之前确认这东西一定是有问题的，哈哈

waterdai 写了： 2024年 7月 4日 16:46 谢谢！我的车是四缸的，我努力下，谢谢

Good luck! Some engine has test port on the fuel rail, if you are doing the pressure gauge route, you can try to see if you have a connecter that hooks up to the fuel rail port. I may be able to find documentation for the toyota I4, but I only had some experience with the 6 cylinder 2GR.

seymour 写了： 2024年 7月 4日 18:55 Good luck! Some engine has test port on the fuel rail, if you are doing the pressure gauge route, you can try to see if you have a connecter that hooks up to the fuel rail port. I may be able to find documentation for the toyota I4, but I only had some experience with the 6 cylinder 2GR.

Those newer cars usually don't have the Schrader valve on the fuel rail. Instead they require a special tool to tee into the fuel line to test pressure.