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What is the P.S.I. of the fuel prior to the injection unit?

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Should be around 2.5

Posted on Nov 10, 2013

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Posted on Jan 02, 2017

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How to connect the fuel liunes and wherethe fuel lines connect on the fuel pump for 2004 chevy cavalier


Your Cav has Fuel Injection, therefore the electric fuel pump is inside the tank. uel injection units require much more pressure than a manual pump can deliver.

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1996 gmc seirra


These have a central port injection system. The central port injection is very finicky on fuel pressure. Spec off the top of my head is 58-60 psi. As little as 1 psi under minimum spec is enough for the vehicle not to start. You first step is to accurately measure fuel pressure with a good fuel pressure gauge. I'll see if I can't round up the actual spec for you in the mean time. Let me know if you have any questions and I'll do my best to answer them. Thank you for using FixYa.com!

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95 Nissan Maxima with fuel injection issue.


Could be battery, starter or coolant sensor.

It is hard to understand / get across engine noises with words so difficult to diagnose over the net but try to push start the car and let me know if it starts ok with a push. Also, maybe try a jump start, preferably using a circuit protector if you have one.
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Engine will not fire immediately when key engaged unless accelerater pumped prior to key engagment, already changed fuel filter twice


Sounds like the fuel pressure regulator is allowing the fuel pressure to bleed down. While sitting (key off) it should hold about 30 psi of fuel pressure to keep the system primed. When it bleeds down it causes an extended start, you sometimes have to cycle the key a couple of time before it will start. If this is the case then replace fuel pressure regulator. FYI pumping the accelerator on a fuel injected vehicle does not prime the system.

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My 1984 toyota corolla ran out of gas now it wont idle


Quick explanation of your fuel system:

An automotive fuel system consists of everything between the fuel tank and the carburetor or fuel injection unit. This includes the tank itself, all the lines, one or more fuel filters, a fuel pump (mechanical, electric, or both), and the carburetor or fuel injection unit.
With the exception of the carburetor or fuel injection unit, the fuel system is quite simple in operation. Fuel is drawn or pumped from the tank through the fuel line by the fuel pump, which forces it through the fuel filter, and from there to the carburetor/injection unit where it is distributed to the cylinders.

So with that info...try first to clean your spark plugs.
Next, replace your fuel filter.
After that, depending on a carburetor/fuel injection, try an additive that cleans the injectors. For the carburetor, try a half of can of what is called "Seafoam". It comes in a metal can available everywhere, including Walmart. It is worth the $6-8 and also will "dry" out your fuel from water. Very good product.

After that, get back to us and let us know how your Toyota is running.

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1998 Ford 460 Fuel injected Bounder Motorhome engine light proble


Plug the computer on to the port located under the dash on the drivers side to get a code reading. It sounds like a 02 sensor about to go bad. If you get a 700 area code, its a transmission sensor code.

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2001 chevy k1500


THE FUEL PUMP IS LOCATED IN THE FUEL TANK. IF IT IS WORKING YOU WILL BE ABLE TO HEAR IT SQUEALING WHEN THE KEY IS TURNED TO THE RUN POSITION PRIOR TO ACTUALLY STARTING THE VEHICLE. IT WILL BE A HIGH PITCH. IF NOT THEN THAT WOULD BE A STARTING POINT. ALSO FUEL INJECTED CARS HAVE A COLD START ENRICHMENT VALVE THAT COULD BE THE PROBLEM. THIS VALVE CAUSES A MOMENTARY FUEL RICH SITUATION SO THE ENGINE CAN START. IT IS BASICALLY A CHOKE FOR FUEL INJECTED ENGINES.

Jan 24, 2009 | 2001 Chevrolet Silverado 2500HD

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