XJ XJ8 / XJR ( X308 ) 1997 - 2003

Help! 1998 xj8 VDP won't start

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Old 07-27-2009, 02:12 PM
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Old 07-27-2009, 05:54 PM
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Mike, I would tell you to connect up a fuel pressure gauge to the car and see if you are getting any fuel pressure. With the engine not running but the fuel pump going, you should be up around 40-50 psi. If the engine does run, then the pressure will drop to the 30-40 psi range. If the pressure remains down at 0 psi (or less than 20 psi), then you have either a bad fuel pump or a wiring issue associated with the fuel pump. If you are up in the 40 psi range, then you have bad gas.

I am placing money on bad gas. You may want to try a bottle of dry gas, but how well that works will be a function of how much water is in the tank. If you are in a place that has recently gotten a lot of rain, it is possible that the underground tanks have gotten water in them and now you are going to be getting a full tank of water, not gas. While uncommon, it can happen.
 
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