daverclasper Posted September 21, 2020 Report Share Posted September 21, 2020 (edited) Hi. Replaced these recently. I think the one from the valve to the manifold is an inaccurate shape (the overall S type shape is too long) and this is causing a kink. Car has been running richer since I replaced. I assume this is likely to be the reason?. A previous post had a photo of a 13/60 (I think) with the same issue, so other folk, maybe be aware. Thanks, Dave Edited September 21, 2020 by daverclasper Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 21, 2020 Report Share Posted September 21, 2020 any breathing needs a nice free flow you cant run with a blocked nose , the car is just the same can you shorten or similar to reduce the tight kink ?? pete Link to comment Share on other sites More sharing options...
JohnD Posted September 21, 2020 Report Share Posted September 21, 2020 Dave, The function of the PCV (Pressure Control Valve) is to limit the vacuum that sucks crankcase gas into the inlet, to burn it in the engine rather than spew it on the road. It may not work very well if the hose is kinked, but that not going to affect running, certainly not to make it rich. More like, symptoms of high crankcase pressure. This pic shows one on a GT6. It doesn't show well that the PCV is supported by a short bracket, just a length of flat strip, drilled at each end. It's between the base of the Valve and one of the Exhaust manifold studs. You can deal with the kinking S-bend by either lifting the valve by making a longer strip for the bracket , or trimming the ends of the S-bend. Link to comment Share on other sites More sharing options...
NonMember Posted September 21, 2020 Report Share Posted September 21, 2020 57 minutes ago, JohnD said: This pic shows one on a GT6. No, it doesn't. That's a Vitesse engine bay. Link to comment Share on other sites More sharing options...
Colin Lindsay Posted September 22, 2020 Report Share Posted September 22, 2020 Mine kinked badly on the GT6 until I bought silicone versions from the club; since then they've held a very rigid shape with no signs of collapse or distortion. Link to comment Share on other sites More sharing options...
JohnD Posted September 22, 2020 Report Share Posted September 22, 2020 Thank you, Colin your pic illustrates my point far better than the pic I used! Yes, NonMember, I think you are right, but I'm not the only one to make that mistake! See the page I got it from: But looking at that pic a little closer, what is the object, apparently mounted on a stick from the inlet manifold. Here's an enlargement: It resembles a Bosch fuel pump! I've never seen anything like it, there! Link to comment Share on other sites More sharing options...
NonMember Posted September 22, 2020 Report Share Posted September 22, 2020 Yes, I wondered about that "extra". It's too small for a fuel pump but I get what you mean. It doesn't appear to be connected in any useful way - possibly plumbed in to the balance pipe but not connecting to anything. Strange. Link to comment Share on other sites More sharing options...
Peter Truman Posted September 22, 2020 Report Share Posted September 22, 2020 Could it be an anti run on solenoid not wired up but if operational venting to atmosphere when ignition turned off. I have a Lucas one fitted to my Vitesse Mk2 to stop it running on. Mine looks different to yours.. Link to comment Share on other sites More sharing options...
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