XJ XJ8 / XJR ( X308 ) 1997 - 2003

fuel pressure test

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Old 07-31-2010, 02:17 PM
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Default fuel pressure test

can some one tell me where the port is, on a 99Vdp, to check the fuel pressure?
My car wont turn over.
Strong crank and only starts if I spray starting fluid in the air intake.
have cleaned TC, checked all connections, relays and fuses.
assuming it is fuel pump but I cant find the stupid port to check it!
I do wear reading glasses but my vision isnt that bad.
 
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Old 07-31-2010, 07:01 PM
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Rear of the right fuel rail.
 
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Old 07-31-2010, 09:27 PM
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Default fuel pump

Once again, thank you, found it.
borrowed pressure gauge from autozone {free with deposit}
will test tomorrow. afraid it is pump. not expensive but labor intense.
If I have no pressure I will double check relays and fuses first
 
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Old 12-04-2010, 09:02 PM
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Default 2001 supercharged VDP crank no start wheres the fuel rail valve

I also can't find the valve for a fuel pressure test. Would it be in a similar location on a 2001 Model year supercharged motor. I replace both fuel pumps and strainers within the last 15000 miles. I don't want to pay to have it done again. The good news is that it died in my driveway this time. The bad news is that its 30 degrees and snowing. I pulled the black shroud that covers the area near the throttle body. I'm sure my frustration isn't improving my vision. I saw two caps that I am positive are for the A/C, one had a massive hose with a large port and then a smaller blue capped on labeled low pressure. Again I am positive these are A/C ports.
 
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Old 12-04-2010, 11:01 PM
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The 'R' cars have the Schrader valve at the right front, I think.
 
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Old 12-05-2010, 06:27 PM
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Default Fuel rail schrader valve located for R motor

Located on the left front of the engine. On the left bank of the supercharger there are what appear to be three cooling hoses which connect at the front. Underneath those there are two wiring connectors and a ribbed line that connects to the valve cover. Below all of this is a blue cap which is the port. I had to use the Ford adapter which came with my pressure tester. Complete PITA to connect to. Also I broke that ribbed line which appears to let air travel through it. Anybody have an idea of what its for and what it connects to? I might just splice it until I can figure out what it takes to replace it.
 
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