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Fuel drag & some white exhaust smoke

 
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Old 07-16-2018, 04:50 AM
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Default Fuel drag & some white exhaust smoke







 
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Old 07-16-2018, 04:53 AM
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Old 07-16-2018, 01:15 PM
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For a start fuel pressure is low, should be up around 50lb.
If you rev the engine do those o2 readings start moving or do they stay at-near 0?
If they are not switching at higher RPM, they are shot unless the FT is off by a mile but the car would barely run if fuel trim was off that far.
If they begin to act a little more normal at speed we need to start looking for the lean condition.
 
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Old 07-16-2018, 01:32 PM
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Here are X200 fuel system specifications.




 
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Old 07-17-2018, 12:35 AM
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Default Where do I start ?



 
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Old 07-17-2018, 12:48 AM
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Default new O2 sensors on bank 2 , thou O2 readings are at near zero when driving


Originally Posted by docs427 View Post
For a start fuel pressure is low, should be up around 50lb.
If you rev the engine do those o2 readings start moving or do they stay at-near 0?
If they are not switching at higher RPM, they are shot unless the FT is off by a mile but the car would barely run if fuel trim was off that far.
If they begin to act a little more normal at speed we need to start looking for the lean condition.
 

Last edited by JaguarJacks; 07-17-2018 at 12:49 AM. Reason: Grammar
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Old 07-17-2018, 08:51 AM
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Start with the basics, assuming you have no hard misses,check all vacuum hoses for cracks/ leaks (especially big ones) , check around all intake gaskets for leaks, especially the itvs (the round plastic things on the r/s of the upper intake, about 2.5 inch in diameter). If you haven't done it, change the fuel filter (hopefully this will help that fuel pressure). At this point you are into the whole mess for a 10 dollar filter and an hour or so in time but we have eliminated the common (and easy) causes. Next I would move on to cleaning the MAF sensor ( I only use electronics cleaner for this, some use carb cleaner but I have seen it eat up the film on the sensor). Make sure to clear the codes and fuel trims before road testing so you can see what effect you really have had on the problem. I think you can clear the fuel trim by disconnecting the (-) battery terminal for appx 1/2 hr ( you can tell if it cleared if the LTFT's read 0 when you turn the key back on.) After this we have to get into more serious diagnosing.
 
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Old 07-20-2018, 12:43 AM
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Originally Posted by docs427 View Post
Start with the basics, assuming you have no hard misses,check all vacuum hoses for cracks/ leaks (especially big ones) , check around all intake gaskets for leaks, especially the itvs (the round plastic things on the r/s of the upper intake, about 2.5 inch in diameter). If you haven't done it, change the fuel filter (hopefully this will help that fuel pressure). At this point you are into the whole mess for a 10 dollar filter and an hour or so in time but we have eliminated the common (and easy) causes. Next I would move on to cleaning the MAF sensor ( I only use electronics cleaner for this, some use carb cleaner but I have seen it eat up the film on the sensor). Make sure to clear the codes and fuel trims before road testing so you can see what effect you really have had on the problem. I think you can clear the fuel trim by disconnecting the (-) battery terminal for appx 1/2 hr ( you can tell if it cleared if the LTFT's read 0 when you turn the key back on.) After this we have to get into more serious diagnosing.

 
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Old 07-21-2018, 04:21 PM
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Originally Posted by JaguarJacks View Post




After cleaning the MAF and CTS Sensors the car is kicking and shaking hereís the only 3 pending and 2 stored codes




 
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Old 07-23-2018, 10:11 AM
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[QUOTE=JaguarJacks;1933435]



After cleaning the MAF and CTS Sensors the car is kicking and shaking hereís the only 3 pending and 2 stored codes




Most probably shorted the wires by not letting it dry before reconnecting ...
what do I do ?
 
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Old 08-08-2018, 04:31 AM
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Default The L-shaped vacuum hose underneath the intake

some of us know everything about Jaguars .
 
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Old 12-28-2018, 01:09 AM
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Default SMOG , Plate , and all



Did the gaskets as well
Simply the messed up hoses under the intake manifold , changed the gaskets while I was at it
ps Donít trust the computers !

Went to a local Jagger who knew the exact L shaped cracked hose , for all S-types are one of a kind
(And guess I cleaned that MAF sensor way too thoroughly just to break and replace it )

The moral of the story is ~
Find a Jaguar Specialist for a trouble shoot and go from there
 

Last edited by JaguarJacks; 12-28-2018 at 07:43 AM.
 
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