Check the wires on the coil, try switching them, i had this exact problem. the wires were on correct as of the diagram but they were actually backwards. its an easy fix if that is the problem, the coin is right on top the engine.
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Re: Starts but will not turn over
If your car ever has a problem turning over but not cranking, think of the 3 main things that make an engine run. Fuel, Air, Spark. If your timing belt is shredded that would be a good cause of not getting it to start. check to see if you have spark going into your spark plugs, you can do this by taking out the spark plug boot and sticking a screw driver in it and laying ontop your engine. When you crank it you should see electrical charges surge the screwdriver. For fuel you would need to take out one of your injectors (still on the fuel rail) and see if fuel comes out. If so you are getting fuel. More than likely you are getting air into your system or else you would not have any compression to crank. But in the instance that it has a sensor to read the air this might be the case. I hope this was a little helpful and if you need mroe assistance please let me know.
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My 1986 jaguar XJ6 was running fine until I took my car in for smog and the people adjusted my vehicle to pass smog. I went to pick the Car up after it passed smog and the vehicle is running as if it has dropped a cylinder, the Car is running rich and sputters when I excelerate. I took it back, and they can't remember what they did or how they adjusted the car. They said the vaccum wasn't right, please send me or show me a vaccum diagram for the XJ6 1986
thats my same problem, did you already found the answer? I change air flow meter, coolant sensor, fuel injectors, change hoses, i take out the charcoal cannister, everything, I dont know if the problem might be a temp sensor, or a thermo time switch, please if you find out let me know cause Im getting crazy. firstname.lastname@example.org
check distributor, try ark the spark from the distributor to an earth in the engine bay, a bolt or something if still nothing, check the coil running to the distributor and trace the wires to the battery, a multimeter or volt meter would be very handy to see if the curcuits are good. make sure spark plugs and leads are good aswell.
Fuel pump is bad or plugged fuel filter it seems. Crack the line from the filter leading towards the engine first. If gas starts squirting out fast, you have good pressue. If not the filter is plugged or a bad pump. How old is the fuel filter by chance? If original its plugged up by now
Not sure if it would be the same problem, but I had a 1986 xj6 that was acting up a few years ago, and it turned out to be that the fuel injectors where not working right. On mine, there was a box in the lower right front the was like a control box for the injectors, and the circuit board started to corrode and make intermittent problems with starting and running. Sorry I could not be more detailed... Good luck.