All crank no start
#1
I've developed an issue with my XJ6 where if it sits overnight or for about 8-10 hours it just cranks but doesn't start. The fuel pump has been replaced, thinking that was the issue but it's still there.
Once the car is started, it runs fine and will turnover first try if it's shut off.
This has happened twice before I replaced the fuel pump and both times, after letting the car sit for about an hour or so, it starts up just fine and it seems like everything is normal until the next time it sits for more than a few hours.
I've got some ideas as to what it is but I want to try and pin point it. I'm thinking it could be injectors or fuel pressure regulator? Would cold temperature (50/60f) effect injectors?
Injectors came off of a used car 84k miles ago and fuel filter was replaced about the same time. I don't think Fuel pressure regulator has been replaced.
Once the car is started, it runs fine and will turnover first try if it's shut off.
This has happened twice before I replaced the fuel pump and both times, after letting the car sit for about an hour or so, it starts up just fine and it seems like everything is normal until the next time it sits for more than a few hours.
I've got some ideas as to what it is but I want to try and pin point it. I'm thinking it could be injectors or fuel pressure regulator? Would cold temperature (50/60f) effect injectors?
Injectors came off of a used car 84k miles ago and fuel filter was replaced about the same time. I don't think Fuel pressure regulator has been replaced.
Last edited by AlbBolivar; 11-11-2015 at 10:26 PM.
#2
#3
Just replaced fuel filter and now can verify fuel is passing through the filter but there is no fuel going into the regulator (checked by loosening the connections to see if fuel would leak but nothing)
Between the fuel filter and regulator is there only the "rochester valve" (black round ufo looking thing)? I've only read a few things here and there about those but not exactly sure what it does...
Between the fuel filter and regulator is there only the "rochester valve" (black round ufo looking thing)? I've only read a few things here and there about those but not exactly sure what it does...
#4
#5
#6
Just confirmed it was the crankshaft position sensor. Would cold weather or sitting for a about 8-10 hours cause the no start? or was the sensor just on it's way out and intermittently working?
#7
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