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the correct way is to use a professional injector cleaning machine. the machine has its own fuel tank filled with a fuel and cleaner mixture, your fuel lines in your case has a quick springlock connection that disconnects your fuel system and machine supplies your engine with a concentrated cleaner and fuel. a loop is connected to your open fuel hoses that just circulates you fuel back to your fuel tank. the machine will clean injectors in most cases in 20 minutes some need more time, a professional will also clean throttle body to remove all carbon build up,fuel filter should be changed. when done correctly you will notice smooth idle,instant pickup and general power,and fuel mileage slight increase machine is 5000.00 dollars so find a shop that has a snap-on machine. average list price is 125.00 for service with throttle body cleaned,fuel filter extra but important

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Q: How do you clean fuel injectors 97 expedetion?
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