Troubleshooting a couple issues (my starting issue, plus some acceleration issues that have started to pop up), and took fuel pressure readings in a number of different situations. Can someone let me know if anything looks out of whack? I took pressure by bridging into the CSI hose off the fuel rail. Thank you!

Cranking: 36 PSI
Idle in Park: 29 PSI
Idle in gear: 30 PSI
Rev engine in park: 32 PSI
Idle, with fuel regulator vacuum unplugged: 38 PSI

Overall it seems to stay really consistent at 30 PSI when running...that seems a little low but because it doesn't dip down (starvation) when I floor the accelerator my guess is that there's nothing to worry about here.

I appreciate your thoughts!

With regards,
Benjamin

 

The only spec Jaguar gives is 36 PSI while cranking so, as far as that goes, you're OK

However, I recall (it's been many years) a much closer range under various running and driving conditions. Something more like 34-38 PSI. So, your results seem a bit low.

Let's hear what others have to say.

Cheers
DD