my 1997 xj6 doesnt start when the engine is cold but if i spray some starter spray in she will start and then after reaching normal temperature i can turn it off and she will start right back up normally, i changed the spark plugs, and the idle control valve, i have no check engine light, nothing of the sorta i also changed the fuel filter. its the 4L inline 6 any idea let me know guys thanks i also started the same thread in a different forum
https://www.jaguarforums.com/forum/x...ke-cold-56326/

i just posted it up in here also because i need this fixed and the jag is my daily and i really would like to get this fixed. thanks guys!

 

Be carefull with that starter spray, you run the risk of melting the pistons!

Other than the above I can't help, sorry.

 

tudski, what I want you to try is wen you are starting the car cold, rotate the key to the RUN position (but not to the START position yet) and then pause there for 5 seconds or so. Now, rotate the key to the START position to attempt to start the engine. Does the engine start now? If yes, then you are most likely looking at a bad fuel pump. If the motor still doesn't want to start, give the gas pedal a quick move before attempting to start the car. It may be that you have some buildup there and it is just enough to keep the engine from running. The only other thing that I cold possibly think of is your crankshaft position sensor is starting to go and due to how it is failing, the ECU can not see the position of the crankshaft and therefore doesn't know where to put the first sparks. By adding the starter fluid, it will auto combust, giving the engine enough speed that it can make a useable signal from the crankshaft sensor.

 

ill let you guys know right now, if it starts how u said if not i should be looking at a new crankshaft sensor?

 

well guys nope she didnt start how u suggested.

 

Tudski, you can check the functionality of the crankshaft sensor. What you will need to do is to remove the sensor off of the side of the engine and then using a multimeter, set it to the 2 VDC scale and connect the leads to the 2 pins on the sensor. Now, holding the sensor still, pass a large metal object close to the end of the sensor. You should see the multimeter jump up. The amount is relative to how close you are to the sensor (closer is better, but not too close, hate to see you damage the sensor), the speed at which the steel passes by (faster gives a better jump, but also makes it harder to get it close), and then a larger piece of steel will give a bigger jump (more steel, more weight, harder to control). I tend to use a good size screw driver. That is fairly common, has the necessary amount of metal in it, and can be controlled pretty easy.

 

Very clever !

Cheers
DD

 

thermo, can you point me to the crankshaft sensor on this car? i have no idea where it is i was told on the right hand side of the engine but not sure where.

 

tudski, you will need to jack up the passenger side of the car. Look behind the passenger side wheel to find the crankshaft pulley. Then look on the firewall side of the engine there. You should see an electrical connector there with a 2 wire plug attached to it. That is your crankshaft speed sensor.

 

okay i will check it in the morning, something else that one of my friends dad brought to my attention, is that iv been using regular gas, and this calls for premium, is this possibly the problem?

 

Nope !


Cheers
DD