Hi all ,
First of all , sorry for my bad english, but i'm french , my english is sort of ..... Basic!! ;-)
after several years without any problems , several years reading posts here ,
Seems that hard times are coming ,
Last month , had a big problem , the engine has quit !
I was on neutral, had a rev at about 4500 rpm , and the engine has " naturally" stopped when rev down ..... And never start again .
I have change the ckps sensor , but still not start
It smells fuel, and we have spark .
If i insist on the starter , we have sort of misfire / backfire but absolutely no start .
Have you any idea ?
We maybe think about a problem of ckps target ?
Could it be a timing offset ?
We have checked the camshaft position sensor with the camshafts position , and looks like there is no offset between them ..... ( in regard of this post where we clearly see the offset :
https://www.jaguarforums.com/forum/x...-chain-156571/
Have you any idea ?
What is the process to check the timing cranckshaft /camshaft ?
Is a target offset possible ??
Is there a way to check the target position of the ckps ?
Is there a repair manual available ?
As you probably know i live in new caledonia , lost island in south pacific , and jaguar service is simply inexistant !...... Bad luck
Thanks for your help !

Vincent from new caledonia

 

To clarify, you revved the engine to about 4500 in neutral and it shut down? Was there any unusual noise from the engine when that happened?

 

No strange noise , ....... Just shut off ..... :-(

 

The misfire/backfire does make it sound like a timing or bent valve issue. I see you are following the thread by dfieldsend which may be of help. A compression check would be useful at this point.

 

hi all ,
first thanks to rj for helping me.
finally found the problem , after a few research , we found that there is no mechanical problems inside the engine , chains were tight , camshaft on the right position ......
so decided to go a bit deeper and checked the harmonic balancer...and finally found that the woodruff key was broken.......so timing was completely off......
; have done this morning a bit shopping , the woodruff key of course , but also all new belts (pulley already changed 2 years ago ) all necessary for classical service , front oil seal crankshaft (small leak) , all camshaft cover seals.......

thanks !
Vincent from new caledonia

 

Thanks for following up. Good luck in getting it all sorted. By "(pulley already changed 2 years ago )" do you mean an idler? Or did you renew the crank damper 2 yrs ago? If you meant the idler, then as long as you are down for a bit, you may want to send that crank damper off for a rebuild.