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Help! 78 280z


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Again what is your fuel pressure from the supply line in the engine compartment.. Have you checked it with a gage?? You can buy one

(100 PSI) at Home Depot or auto store and the hardwear for it's install.. Get a T fitting and 2 hose barps the same size as the rubber fuel line..

(If you don't know the size of the rubber fuel line cut a 1/2 " off of the end were it attaches to the engine take it with you) Also get 2 hose clamps and a piece of rubber fuel line about a foot long to install and leave on the Fuel pressure gage you have just made for future use.

To install attach supple line to gage hose barp and clamp,, attach new rubber line to were supply line goes on engine and clamp.. While cranking

see what pressure you have.. You can pinch (vise grips) off the new rubber line, crank engine and see dead head pressure. You can do same as last test but keep holding the fuel line see if it bleeds off pressure if it drops right away the check valve on the fuel pump is bad..

You can also use alittle starter fluid to start eng and check pressures.. Looking for 36psi.. You have checked for 12 volts/power at the fuel pump and a ground while cranking right?? If you don't have it get it before you go on. Let us know what the pressures are..

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alright I'll let you know in the next couple days, I am also putting down a concrete sidewalk on the side of the house. I am not sure exactly how to test the voltage on the fuel pump... I've never done anything like it, so I need a how-to for someone who is extremely dumb and knows no jargon lol, I have an ohm-meter (or thats how my dad calls it) and I have a battery charger with a couple different settings with different amount of amps.

 

I dont think that getting the pressure gauge will do anything because at the moment its getting about 0 PSI :P I am suprised it ran that one time now that I took the line to the engine off... it trickles out after ab out 8 seconds of cranking it. I will replace the fuel pump because i am pretty sure that is bad now. But I will test it out with the voltage thing just to learn how to do it, is there a really good guide on doing it that I can find?

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To test get a 12V test light look like a screwdriver with a point and a light in the handle and a wire from the handle..or a mutimeter set on like 25 volts DC.. ground the black wire (-) and put red (+) or the point of the

test light on the wire to the pump..You might have to break the sealant

over the nuts on the pump. You can reseal them later.. Crank eng and check for ight or 12V at the pump. If you don't have it move forward in the car.. fuel relay or other items..Do you have a service manual. get one.. you can down load and print off the wires for your car here..

http://www.autozone.com/az/cds/en_us/0900823d/80/1d/1d/80/0900823d801d1d80/repairInfoPages.htm

You can pull the small black/yellow wire off the starter while testing it will keep the starter from engaging/turning while you have the key in the start

position..will save the batt power..

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