Rob_Mitchell Posted March 9, 2011 Share Posted March 9, 2011 been stripping the engine bay out and left this pipe but whats it for? and where does it go, i have not got under the car yet but thought i would pop a the question on here... i have a feeling its a fuel pipe Quote Link to comment Share on other sites More sharing options...
imi Posted March 9, 2011 Share Posted March 9, 2011 looks like one of the three from the charcoal canister (fuel) Quote Link to comment Share on other sites More sharing options...
Rob_Mitchell Posted March 9, 2011 Author Share Posted March 9, 2011 yeah thats what i thought, can i just pull it out as i have no need for the canister? or do i have to blank something off? i thought its only a breather Quote Link to comment Share on other sites More sharing options...
David P Posted March 9, 2011 Share Posted March 9, 2011 (edited) If it's the breather pipe, then remove it completely and blank it off at the tank end. Charcoal canister removal Edited March 9, 2011 by David P (see edit history) Quote Link to comment Share on other sites More sharing options...
hodge Posted March 9, 2011 Share Posted March 9, 2011 It's a breather from the fuel tank to the charcoal canister. When you fit your new fuel lines, remove it from the tank, pull it out and vent the tank behind the car. If the charcoal canister isn't in place it's just engine bay clutter lol. Quote Link to comment Share on other sites More sharing options...
David P Posted March 9, 2011 Share Posted March 9, 2011 (edited) DO NOT vent the pipe out of the back. The Supra tank and fuel pump are designed to work with 2psi, the fuel cap is also a pressure relief valve. Just do what is say's in the link, Charcoal canister removal any other old wives tale plumbing system WILL cause issues. Edited March 9, 2011 by David P (see edit history) Quote Link to comment Share on other sites More sharing options...
hodge Posted March 9, 2011 Share Posted March 9, 2011 DO NOT vent the pipe out of the back. The Supra tank and fuel pump are designed to work with 2psi, the fuel cap is also a pressure relief valve. Just do what is say's in the link, Charcoal canister removal any other old wives tale plumbing system WILL cause issues. No it won't. When removing the charcoal canister the pipe is just vented anyway. I've done loads of these and non have has issues. Wether you vent it at the front of the car or the back of the car doesn't matter a shit, it's still vented. Quote Link to comment Share on other sites More sharing options...
David P Posted March 9, 2011 Share Posted March 9, 2011 You just can't help some folks. Quote Link to comment Share on other sites More sharing options...
hodge Posted March 9, 2011 Share Posted March 9, 2011 You just can't help some folks. What's that supposed to mean?????? Quote Link to comment Share on other sites More sharing options...
David P Posted March 9, 2011 Share Posted March 9, 2011 (edited) You have implied that you have disregarded this information and intend to carry on regardless. It means exactly what it says. The link takes you to the back end of a thread that exposes issues that others have experienced from leaving this pipe open and the reasons why this is the correct way to do it. It's easier too. Edited March 9, 2011 by David P (see edit history) Quote Link to comment Share on other sites More sharing options...
hodge Posted March 9, 2011 Share Posted March 9, 2011 It wasn't me who asked the question for a start so the carrying on regardless comment doesn't really apply. I've disregarded the information because IMO it's wrong, simples. The pipe is intended as a vent/breather for the fuel tank. A breather is a breather. That's just like saying I've put an aftermarket plenum on and gone single so I'll block off the crank breathers on the cam covers. Are these your own views and opinions or do you actually have someone credible in this technical field to back this up. Quote Link to comment Share on other sites More sharing options...
scotty71 Posted March 9, 2011 Share Posted March 9, 2011 hash pipe Quote Link to comment Share on other sites More sharing options...
hodge Posted March 9, 2011 Share Posted March 9, 2011 hash pipe Good call scotty Quote Link to comment Share on other sites More sharing options...
David P Posted March 9, 2011 Share Posted March 9, 2011 (edited) It's not rocket science, the information is in the Workshop Manual. As I have explained and you have ignored twice before, the fuel tank and pump are designed to work at +2psi and the fuel cap is a 2psi pressure relief valve. Leaving the tank to charcoal filter breather pipe open ended, leaves the tank and pump without pressure, and smelly/flammable petrol fumes wafting around. Prove me wrong and I will buy you a pint. Edited March 9, 2011 by David P (see edit history) Quote Link to comment Share on other sites More sharing options...
Bailey. Posted March 9, 2011 Share Posted March 9, 2011 Quote Link to comment Share on other sites More sharing options...
hodge Posted March 9, 2011 Share Posted March 9, 2011 Rocket science, lmao. I love that fraise. It discribes so many things lol. I havnt ignored anything I just don't agree that's all. Are you seriously concerned about 2 PSI?? I'm sure I'm not. As far as I'm concerned, as soon as I turn on my ignition my FP gauge says 3.5 bar. I'm happy with that. As for a petrol smell I've never had that problem on any of the cars I've done. I was under the assumption that this pipe led to the canister to releave pressure when you open your petrol cap. With fuel sloshing about in a totally sealed tank pressure will increase due to fumes. This pipe stops you getting showered with fuel when you remove your petrol cap. If I'm wrong I'm wrong, then fair play to ya but like I've said every car I've done has never had an issue such with it. I only like sprite I don't drink lol. Quote Link to comment Share on other sites More sharing options...
David P Posted March 9, 2011 Share Posted March 9, 2011 The charcoal cannister removes petrol fumes from relieved tank pressure and magically turns them into water which drips out of the drain pipe, yet maintains the tank pressure at 2psi. With or without the charcoal filter the fuel cap relieves tank pressure at 2psi, it just gets a little more relieving to do without the charcoal cannister letting some through. Mine's a pint of real ale please. Quote Link to comment Share on other sites More sharing options...
hodge Posted March 9, 2011 Share Posted March 9, 2011 Ok then drinks on me. Now let's chat about tidying up engine bays, I know shit loads about that. Quote Link to comment Share on other sites More sharing options...
David P Posted March 9, 2011 Share Posted March 9, 2011 Until I have everything nailed under the bonnet and proven reliable, I am more interested in getting it going with clear access to all of it rather than hiding it. That might get done once I have nothing better to do. Quote Link to comment Share on other sites More sharing options...
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