jammy-pop 8 Posted September 4, 2020 Report Share Posted September 4, 2020 What is the purpose of this little fiddly horrible pipe which I'm going to have to take the plenum off to refit! Quote Link to post Share on other sites
Yellow and Green 3 Posted September 5, 2020 Report Share Posted September 5, 2020 No need to take the intake off. You can reach under it from the back (towards the front of the car) and get it back on the nipple. Mine is more of a formed hose that makes it a bit easier to install. It’s the manifold vacuum for the fuel pressure regulator. Good luck! Quote Link to post Share on other sites
jammy-pop 8 Posted September 5, 2020 Author Report Share Posted September 5, 2020 Thanks Y and G! I need to buy a new hose as I think it split at the regulator end before. That's why it's lost its shape. What are the effects of not having this pipe connected, any ideas? Steve. Quote Link to post Share on other sites
mike_sekinger 762 Posted September 5, 2020 Report Share Posted September 5, 2020 That's not the right hose arrangement. It should consist of a formed hardened plastic pipe with rubber clamped ends. The pipe is your pressure reference for the fuel regulator. It is a rising rate set-up, so the pressure needs to increase with boost. If you don't have the reference, then you have no increase in pressure. Quote 1996 Esprit V8, 1998 Esprit V8 GT, 1999 Esprit S350 #002 (Esprit GT1 replica project), 1996 Esprit V8 GT1 (chassis 114-001), 1992 Lotus Omega (927E), 1999 Esprit V8SE, 1999 Esprit S350 #032, 1995 Esprit S4s, 1999 Esprit V8 GT (ex-5th Gear project), 1999 Esprit V8SE ('02 rear) 1999 S350 #002 Esprit GT1 replica Link to post Share on other sites
jammy-pop 8 Posted September 5, 2020 Author Report Share Posted September 5, 2020 Thanks Mike, this may be the reason for my misfire at higher revs then 🤔 Will order a replacement pipe. Cheers guys. Steve. Quote Link to post Share on other sites
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.