Question about Jaguar XJ8
Car will not start sometimes no fuel or presure present in fuel rail after waiting a half an hour or so it starts on first try and runs great
You are dealing with a intermittent fuel pump problem can be the pump itself or bad connections. Here is the main concern for the fuel pump to turn on the ECM must recieve a RPM signal from the crank position sensor this signal must be recieved at the ECM greater than 250 RPM if it is not the fuel pump will not turn on. The use of a labscope works here or a generic scan tool with live data will show this. This problem necessarily gives engine codes.
Posted on Feb 24, 2012
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Posted on Jan 02, 2017
SOURCE: can't find fuel filter
The fuel filter is located above the rear axle on the driver's side. The easiest way to replace it is to break the fuel line nut loose on the side nearest the wheel and screw it all the way off (you may have a small amount of gasoline come out of the filter, so have a container handy). Then break the fuel line nut loose on the inlet side (farthest away from the wheel well) by using your wrench to turn the entire fuel filter using the nut that is part of the filter on the side nearest the wheel well. Reinstalling the filter is just the reverse of this procedure. Be sure to check that the O-rings inside the nuts are good and don't overtighten the filter or you might cut the O-rings and the filter connections will leak
Posted on Apr 13, 2009
First thing to check is the radiator cap seal. If it is not sealing properly, the water will boil off and then soon, the anti freeze will begin to disappear. Clean the metal surfaces and gasket and make sure it is tight ---or buy a new cap --but make sure there is a seal. If that doesn't cure it, you may have a head gasket leak that blows the coolant (anti freeze) into one cylinder. If that cylinder is tight, the coolant will only evaporate in the heat and be blown out the exhaust --not entering the oil pan. Check your exhaust when you start up. You may see white smoke, or even liquid, exiting the exhaust pipe, indicating a blown head gasket (then engine may run rough, too). If this is the case, there are reasonably inexpensive cures for this in some cases.
Posted on Jul 09, 2009
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