Precat Griff fuel pressure test

[PreCat Griffith]

So in an attempt to diagnose my extended hot start cranking (and overfueling/misfire/sooted plugs), I'm going to measure fuel pressure. Unfortunately the precat Griff doesn't have a valve on the fuel rail, like other models do, so I plan to disconnect the hose at the rail and tee in a pressure gauge ala this kit from Amazon: https://www.amazon.co.uk/dp/B088KDWN8Q/ref=sspa_dk...

Which hose should I tee into, the blue or the yellow?

[Belle427]

Blue is feed yellow is return.
Info on testing here.
https://www.actproducts.co.uk/2011/lucas-14cux-fue...

Edited by Belle427 on Sunday 31st December 07:42

Edited by Belle427 on Sunday 31st December 07:45

[PreCat Griffith]

Thanks. Yes, that's exactly what I was going to follow.