XJ XJ8 / XJR ( X308 ) 1997 - 2003

White smoke and fuel smell

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Old Mar 5, 2025 | 11:11 PM
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Default White smoke and fuel smell

Hello unfortunately it's been 2 days I notice fuel smell and I saw White from the exhaust pipe it's not that much but you can see it I don't have codes except the abs which is obviously not related to it , could it be the fuel pressure regulator? Or stuck open fuel injector? Car been parked for about a month I don't want to throw parts without knowing the issue I'm thinking about the oxygen sensor but don't know from where to start
 
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Old Mar 6, 2025 | 09:09 AM
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A stuck injector or fuel pressure regulator could cause the fuel smell. White smoke might just be condensation, but check for coolant loss. Start by inspecting fuel lines, checking fuel trims with an OBD scanner, and testing injectors for leaks.
 
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Old Mar 6, 2025 | 09:40 AM
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It matters for how long the white smoke is evident. If it is evident only after initial
start up and then recedes, it may be nothing more than water condensation in the
exhaust. if it becomes more evident when accelerating after the engine is warm,
then there may be other issues, such as injectors or coils. However issues along
those lines usually produce misfires, which you did not notate.
 
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Old Mar 6, 2025 | 08:29 PM
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Originally Posted by RandyS
It matters for how long the white smoke is evident. If it is evident only after initial
start up and then recedes, it may be nothing more than water condensation in the
exhaust. if it becomes more evident when accelerating after the engine is warm,
then there may be other issues, such as injectors or coils. However issues along
those lines usually produce misfires, which you did not notate.
Didn't see any misfiring code I will replace the fuel filter first
Then will pull the injectors I think it's the fuel regulator
 
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