peter moffatt Posted March 17, 2008 Report Share Posted March 17, 2008 I posted this topic on the forum 2/3years ago. But unfortunately my TR5 still suffers with severe petrol smells in the boot area and also in the cockpit. On numerous occasions I have checked and double checked all the unions etc and I cannot trace any leaks at all. My car is fitted with a Bosch fuel pump underneath the n/s outer boot floor and all the fuel pipes fitted are new. I have tried 3/4 petrol tank sender unit gaskets, retightened all unions again and again. I am aware that these problems were noted when these cars were new. Can anyone help I am getting desperate. Many thanks Peter Quote Link to post Share on other sites
stuart Posted March 17, 2008 Report Share Posted March 17, 2008 I posted this topic on the forum 2/3years ago. But unfortunately my TR5 still suffers with severe petrol smells in the boot area and also in the cockpit. On numerous occasions I have checked and double checked all the unions etc and I cannot trace any leaks at all.My car is fitted with a Bosch fuel pump underneath the n/s outer boot floor and all the fuel pipes fitted are new. I have tried 3/4 petrol tank sender unit gaskets, retightened all unions again and again. I am aware that these problems were noted when these cars were new. Can anyone help I am getting desperate. Many thanks Peter Peter I take it you have checked the condition of the large piece of hose between filler cap and tank as I have known them replaced with the wrong type of hose. Stuart. Quote Link to post Share on other sites
peter moffatt Posted March 17, 2008 Author Report Share Posted March 17, 2008 Peter I take it you have checked the condition of the large piece of hose between filler cap and tank as I have known them replaced with the wrong type of hose.Stuart. Yes Stuart. I fitted a new one supplied by Revington Cheers Peter Quote Link to post Share on other sites
Guest Wyn Posted March 17, 2008 Report Share Posted March 17, 2008 For what it's worth Peter, I have exactly the same problem. Wyn Quote Link to post Share on other sites
johnny250 Posted March 17, 2008 Report Share Posted March 17, 2008 I posted this topic on the forum 2/3years ago. But unfortunately my TR5 still suffers with severe petrol smells in the boot area and also in the cockpit. On numerous occasions I have checked and double checked all the unions etc and I cannot trace any leaks at all.My car is fitted with a Bosch fuel pump underneath the n/s outer boot floor and all the fuel pipes fitted are new. I have tried 3/4 petrol tank sender unit gaskets, retightened all unions again and again. I am aware that these problems were noted when these cars were new. Can anyone help I am getting desperate. Many thanks Peter I get a whiff in my 250 too.... and was looking for the vent pipe....there isn't one.... and its an original magnetic monza filler? how does the tank breathe on a TR5 and 250? john Quote Link to post Share on other sites
stuart Posted March 17, 2008 Report Share Posted March 17, 2008 I get a whiff in my 250 too.... and was looking for the vent pipe....there isn't one.... and its an original magnetic monza filler? how does the tank breathe on a TR5 and 250? john They should breathe through the cap as it should be vented. Not sure what a magnetic monza is as thats not standard. Stuart. Quote Link to post Share on other sites
PILKIE Posted March 17, 2008 Report Share Posted March 17, 2008 (edited) To all of you with a whiff!!!! From the car that is !! I have noted at autojumbles,that on some cap units there is a breather or overflow exit pipe on the main metal section that sits in the bodywork! My cap does not have this! And there is no pipe for it to fit to either!! It has a very small hole in the sprung seal section that acts as the breather. I wonder if any of your caps have this exit/overflow pipe and that is where the fumes are coming from?, as its not connected to anything ??? Edited March 17, 2008 by PILKIE Quote Link to post Share on other sites
johnny250 Posted March 17, 2008 Report Share Posted March 17, 2008 They should breathe through the cap as it should be vented. Not sure what a magnetic monza is as thats not standard.Stuart. it is standard on the 250 I think Stuart, john Quote Link to post Share on other sites
Bill Bourne Posted March 17, 2008 Report Share Posted March 17, 2008 I had this problem as well. Took me ages to find it. 1st left open all the boot area and put kitchen towel around every joint and left them there whilst I drove around for a week. Nothing. Then a bit of talcolm powder. Nothing. I changed the wire clips on the petrol filler hose to jubilee type/industrial worm fixings. Nothing. I changed back to the normal rubber hose, rather than the kevlar type. So it could have been a combination of things, but I eventually I found what I think was the cause. The sender unit fitting was smelling. Took the tank out - took the sender unit out, filed the facings dead flat, new gasket, and some petrol sealant - Wellseal - bingo. No smell (that is after allowing the car to air for a couple of days). I still get a slight smell from the filler cap as you would expect as the UK versions vent from 2 little holes in the back of the cap, but it's not noticeable anymore. I think the USA filler caps are vented by a seperate pipe, taken out and down to the bottom of the car. - Well that was my experience - I hope it helps. Bill Quote Link to post Share on other sites
Brett Posted March 18, 2008 Report Share Posted March 18, 2008 (edited) Well it may be more of a teaser than a help, but I had the same problem, and I gave my TR5 to our swiss Triumph specialist here: Garage Messmer. He fitted his own system of Bosch fuel pump located under the rear wheelarch (outside boot), retaining the original Lucas filter in the boot, changed all the petrol pipes, and now there is no more petrol smell in the boot at all! So, there is hope... Edited March 18, 2008 by Brett Quote Link to post Share on other sites
North London Mike Posted March 18, 2008 Report Share Posted March 18, 2008 but I eventually I found what I think was the cause. The sender unit fitting was smelling. Took the tank out - took the sender unit out, filed the facings dead flat, new gasket, and some petrol sealant - Wellseal - bingo. No smell (that is after allowing the car to air for a couple of days). Bill Same as Bill's story.....I sealed mine in place with gasket sealent, doesn't look nice but did the job and its behind panel. Saved stipping it all out Seems like a common problem Quote Link to post Share on other sites
Tom Fremont Posted March 18, 2008 Report Share Posted March 18, 2008 To confirm what those who have won the battle say: it shouldn't and needn't be. What is lost through the filler cap vent cannot be significant as they all have them ( though later U.S. TR6s have a carbon cannister circuit to handle even this trivial amount ). This is different from the issue of exhaust fumes making their way into the cockpit - I don't know if we ever came up with a definitive answer to this one, but I'm happy neither of mine suffer from it now Quote Link to post Share on other sites
Peter Douglas Winn Posted March 21, 2008 Report Share Posted March 21, 2008 Usually the smell from the boot is out-gasing of the petrol through the wall of the fuel pipes. With the old petrol this did not happen but with the new super stuff you got problems. So get yourself PTFE lined hose pipes. I wonder whats going to happen in 2009 when they introduce the new petrol with 10% bio fuel. It is so aggressive eats everything. Quote Link to post Share on other sites
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