Check the fuel pump you could hear a hissing sound when you turn the ignition on but have the engine off have somebody with you and if you dont hear its your fuel pump other thing is your relay have the check after that just in case your pump fine
Have someone turn on the key while you stand at the rear of the vehicle by the gas fill... If your fuel pump kicks on,you wheel hear a humming noise coming from the gas tank if your fuel pump is operating correctly.. Before removing the fuel pump to check it out or replace..Check all of your relays,and make sure the fuel pump wasn't shut down by any safety over ride functions your vehicle may be equipped with...
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If you do not have a vacuum leak in a hose. then check the idle air control because this is what regulates the idle and sends this info to computer. You may have to take it off to clean it or replace if bad. Good-Day!
With out starting the jeep turn the key forward with the window down and see if you hear a wherlling or humming sound coming out of your gas tank, that is the sound of the fuel pump kicking on if you do not here that then it is fuel pump related, then check fuel pump fuse,relay or safty shut of swich. or you could have to replace the fuel fillter if you do here the sound out of the fuel tank.
The vacuum hose you removed may be the cause considering it allows the fuel pressure regulator to operate properly, replace the vacuum hose and be sure all vacuum lines are in good condition.
Ford focus can have a timing belt about to break,have it checked,and replace it ,if it breaks,it will not start,and it will cost you.The valves in the engine will be bent if the timing belt breaks.
i'm assuming you fixed the hose. you have to do a pressure test to make sure fuel is getting to engine. my book says to remove fuel filter cap and have someone turn the key to on position (engine not running) while you listen at the fuel filter opening. you should hear a whirring sound for a couple seconds. if you don't hear any thing check the fuse.if thats ok, check the relay.
First from the fuel tank in side the fuel tank there is filter remove the screws on the top where the fuel gauge fitted when you remove gauge you can see fillter that is one sometimes blocked.
Next if you check fuel filter it is ok, but nissan sunny has fuel filter inside the caburator where fitted fuel pipe from the fillter clean that filler.
ather thiing is check your connections any leak or loose.
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