Member Jonathan Kay Posted August 23, 2016 Member Share Posted August 23, 2016 Did you tell us the effect on the engine of removing the cap?Jonathan Link to comment Share on other sites More sharing options...
SM25T Posted August 23, 2016 Share Posted August 23, 2016 The very small plastic hose that connects to an 8mm bore rubber hose at the top front of tank by the sender is the fuel return hose from the engine on an injection car. Link to comment Share on other sites More sharing options...
RyCliff Posted August 23, 2016 Author Share Posted August 23, 2016 Oh yeah sorry, lifting the latch on the aero cap then restarting the car seemed to help things until the next time I accelerated and then the jumping started again. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted August 23, 2016 Member Share Posted August 23, 2016 Thanks... but the usual test is to remove the cap while the engine is running and suffering. Immediate improvement gives the diagnosis.Jonathan Link to comment Share on other sites More sharing options...
RyCliff Posted August 23, 2016 Author Share Posted August 23, 2016 Makes sense to carry this out whilst running, will try this next time.Taken a further look at the second breather line and this seems to be some very strange setup./sites/default/files/images/users/32821/Car%20Breather%202.JPGThis is the best photo I can get looking up at the boot floor. The valve is there but then the breather continues above the diff and towards the front of the car.I have the note from TomB on what the setup should be which is a long departure from what I'm seeing. So before I start to cut anything, does anyone understand where this could be going to? The fuel return on the other side of the tank seems to be in place and takes a similar route so I'm left a little perplexed. Link to comment Share on other sites More sharing options...
SM25T Posted August 23, 2016 Share Posted August 23, 2016 Does one of them go to a charcoal canister in the engine bay. Aren't these considered old hat now ... and can be removed ? Link to comment Share on other sites More sharing options...
TomB Posted August 23, 2016 Share Posted August 23, 2016 Thats a different set up to mine. THe curved, ridge one is the handbrake, forget about that. The thin braided one is the flexible brake hose going to the dedion 3-way union. The straight rubber one is the high pressure pump feed to the engine. No idea what the other rubber one is with what looks like a valve. Is that a one way valve? Just a thought - see if you can borrow the older Metro style filler cap and neck and try that? Link to comment Share on other sites More sharing options...
RyCliff Posted August 23, 2016 Author Share Posted August 23, 2016 Will take a look for the charcoal canister but it is heading up to the engine bay. Any idea where abouts it would be and approx. size?This breather I'm pretty sure is the one causing my grief because as soon as I removed it from the filler neck there was an air rush. Link to comment Share on other sites More sharing options...
RyCliff Posted August 23, 2016 Author Share Posted August 23, 2016 Yeah I'm pretty sure it's a one way valve. Once it gets above the diff it's pretty difficult to distinguish which one it is, but I'm assuming it must run down to the engine bay.If I find this grey canister I'll cut it and make the modification from the workshop note you sent through Tom Link to comment Share on other sites More sharing options...
SM25T Posted August 23, 2016 Share Posted August 23, 2016 Check any one way valves are installed the right way round ! Link to comment Share on other sites More sharing options...
SM25T Posted August 23, 2016 Share Posted August 23, 2016 Take the boot floor out from above if you need to in order to trace hoses. Link to comment Share on other sites More sharing options...
RyCliff Posted August 26, 2016 Author Share Posted August 26, 2016 Think I've managed to trace the correct pipe through the transmission tunnel to a large cylinder mounted just in front of the drivers side footwell (rhd). Would this be the canister and if so what's the purpose of the electrical connection on top? Has anyone removed this before? Thanks Ryan Link to comment Share on other sites More sharing options...
RyCliff Posted September 28, 2016 Author Share Posted September 28, 2016 Sorry for the thread resurrection.Think I have this sorted now, removed and refitted the airline into the charcoal canister which seems to have helped. I assume this was blocked up.As for the hunting at idle, I've tried the tps reset and this doesn't seem to have solved much. Could a new one altogether fix this? Link to comment Share on other sites More sharing options...
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