XJ XJ8 / XJR ( X308 ) 1997 - 2003

Vacuum lines on fuel pressure regulator?

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Old 09-26-2016, 09:35 AM
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Default Vacuum lines on fuel pressure regulator?

2 things...is there a hose that connects to the end of the fuel pressure regulator and where does the J shaped hose under the throttle body connect to...
 
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Old 09-26-2016, 11:19 AM
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Can you see how "question about vacuum hoses" would be a far better title for the thread? When people are searching for info in years to come, do you think your title will be helpful?

Yes, there is a hose that connects from the right hand intake to the FPR. It is for vacuum so that the fuel pressure varies with intake manifold pressure.
 
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Old 09-26-2016, 05:11 PM
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The small elbow shaped hose is cooling system connected. It is directly below the throttle body and is oriented about 45 degrees to the left side of the engine.
A real bear to change after everything is back in place and you discover the hose is leaking ask how i know LOL
 
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Old 09-27-2016, 02:21 AM
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Originally Posted by Mark SF
Can you see how "question about vacuum hoses" would be a far better title for the thread? When people are searching for info in years to come, do you think your title will be helpful?

Yes, there is a hose that connects from the right hand intake to the FPR. It is for vacuum so that the fuel pressure varies with intake manifold pressure.
Right...thanks. And it would just a bit more helpful if you tell where on the right hand intake manifold I might be able to find this hose. Just in case people read this in the years to come, know where it is exactly...
Originally Posted by avern1
The small elbow shaped hose is cooling system connected. It is directly below the throttle body and is oriented about 45 degrees to the left side of the engine.
A real bear to change after everything is back in place and you discover the hose is leaking ask how i know LOL
Oh man thanks I need to get that hose back on the right track quickly then LOL. Where does it hook up to please?
 
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Old 09-27-2016, 07:35 AM
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Attached is the relevant pages from the tech manual for the FPR hoses and the cooling hoses.
 
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Old 09-27-2016, 07:54 AM
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Originally Posted by avern1
Attached is the relevant pages from the tech manual for the FPR hoses and the cooling hoses.
Thank you so much!
 
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