REllerby Posted August 22, 2015 Report Share Posted August 22, 2015 Evening all, I'm sure I'm not the 1st person to query this, but having recently purchased a TR6 I am struggling with engine/exhaust/fuel fumes in the cockpit, so much so, that we end up with streaming eyes and headaches etc. The boot seal has been replaced, the exhaust changed to a standard and the grommets sealed if looking flaky - what else do you suggest? Quote Link to post Share on other sites
OAF939M Posted August 22, 2015 Report Share Posted August 22, 2015 There are a lot of posts on this but not sure how you search. I had the same problem ,then it just went away ,but I do have a CO monitor in the car. I think I had a loose silencer, we fixed it and OK since. Quote Link to post Share on other sites
REllerby Posted August 22, 2015 Author Report Share Posted August 22, 2015 It's a bit of a bugger - exhaust has been checked and rear box changed to make it standard - I think it must be coming from the front as opposed to the back, but don't know where to start apart from sealing flaky grommets! Quote Link to post Share on other sites
grumpy2 Posted August 22, 2015 Report Share Posted August 22, 2015 teres a good chance its due to aerodynamics, try to borrow a windbreak and see if that help, I have one on mine and have no exhaust/engine fumes in the cockpit. where are you? Quote Link to post Share on other sites
REllerby Posted August 22, 2015 Author Report Share Posted August 22, 2015 Tried that too - mahoosive bit of cardboard taped to the rollbar! 15 miles north of Ipswich Quote Link to post Share on other sites
RogerH Posted August 22, 2015 Report Share Posted August 22, 2015 Do you put any additives in the fuel tank (octane booster etc). This can really smell and bring on the headaches. Roger Quote Link to post Share on other sites
JJC Posted August 22, 2015 Report Share Posted August 22, 2015 There have been many posts on this problem over the years. Anyone who keeps old TRActions will even find an article by me moaning about the smell. Some things seem to make it worse. If your car hasn't been set up by someone who knows what they're doing then the odds are it will be fumey. A recent thread suggested that exhaust systems that don't exit close to the edge of the car may have a problem. When our 6 goes back together I'll be replacing the "sports" exhaust with something that exits at the edge. JJC Quote Link to post Share on other sites
ShaunC Posted August 22, 2015 Report Share Posted August 22, 2015 Mine was coming from the exhaust manifold gasket. Worth checking the fixings for correct tightness. Also, block any holes from the engine bay to the cockpit to eliminate. Shaun. Quote Link to post Share on other sites
barkerwilliams Posted August 22, 2015 Report Share Posted August 22, 2015 Hi, I recently started the thread; TR6 Exhaust fumes / airflows over bodywork; for similar reasons to yours, fumes, headaches etc. However I, and others on that thread have twin exhausts nearer the centre line of the car than the original rear box. In the end I fitted a behind seat deflector and two curved exhaust trims to throw the exhaust down and outwards and the fumes exit 75mm further back from the bumper. My exhaust fumes were coming straight over the centre line of the top of the boot lid drawn in by the low pressure created by the windscreen. The SS exhaust trims I fitted off Ebay were less than £5 each, So if you have no exhaust leaks (get someone to restrict exhaust with engine running whilst you check for leaks) try a curved exhaust trim of the correct size to fit over your exhaust. Can't say they look as stylish as the original but the car is no longer trying to kill me with the fumes, and it's nice not to have a headache. If you need any further info please don't hesitate to ask me. Alan Quote Link to post Share on other sites
Peter Cobbold Posted August 22, 2015 Report Share Posted August 22, 2015 +1 with Shaun for exhaust gaskets:- manifold/head, manifold/pipes, pipe joints alongside gearbox. If the engine blow-by is directed into a catch tank, there too. Peter Quote Link to post Share on other sites
Guest ntc Posted August 22, 2015 Report Share Posted August 22, 2015 (edited) The engine is a leaking or b knackered or not set up right simples. Edited August 22, 2015 by ntc Quote Link to post Share on other sites
peejay4A Posted August 22, 2015 Report Share Posted August 22, 2015 +1 with Neil. Compression test first. Quote Link to post Share on other sites
foster461 Posted August 23, 2015 Report Share Posted August 23, 2015 You didnt mention if you were experiencing this only with the top and windows up or if it is also a problem with the top down. Stan Quote Link to post Share on other sites
REllerby Posted August 23, 2015 Author Report Share Posted August 23, 2015 Lots of similar problems to mine - restrict exhaust flow to check for leaks and then a rolling road to set the car up may be the next step - any suggestions for someone near to Ipswich that does this? Your thoughts/comments are appreciated! Quote Link to post Share on other sites
REllerby Posted August 23, 2015 Author Report Share Posted August 23, 2015 And it doesn't seem to make any difference if the top is up or down........ Quote Link to post Share on other sites
Steves_TR6 Posted August 23, 2015 Report Share Posted August 23, 2015 (edited) If it's bad with the top up then does this not indicate fumes getting into the car through the bulkhead, gearbox seals/ floor ? Steve Edited August 23, 2015 by SDerbyshire Quote Link to post Share on other sites
RogerH Posted August 23, 2015 Report Share Posted August 23, 2015 Hi Steve, I was thinking something similar. The back of the TR6 is rather square and causes quite a turbulence in the airflow. With the roof down there is a significant backwash causing the airflow to move forwards. You see this a lot on convertibles - drivers hair (if any) blowing forwards. With the roof up then this airflow is calmed down a great deal and should send most of the gases back away from the car. So if it is coming in with the roof up then the engine bay and exhaust piping must be a serious contender for a good inspection. Or .... a Surrey top. Roger Quote Link to post Share on other sites
Cew Posted August 23, 2015 Report Share Posted August 23, 2015 Lots of similar problems to mine - restrict exhaust flow to check for leaks and then a rolling road to set the car up may be the next step - any suggestions for someone near to Ipswich that does this? Your thoughts/comments are appreciated Clive Manvers at Elmswell is your best bet for diagnosis, not sure is he has a rolling road but he certainly knows the cars. Quote Link to post Share on other sites
DaveR Posted August 23, 2015 Report Share Posted August 23, 2015 This is not an uncommon problem with the small chassis Triumphs. After you are happy the exhaust manifold and system are not blowing there can be a couple of causes. A flaky gearbox cover either not being sealed and or broken letting in fumes. The rear exhaust pipe being short and fumes being sucked back into the car. Just my thoughts. Dave Quote Link to post Share on other sites
Clarkey Posted August 23, 2015 Report Share Posted August 23, 2015 Hi REllerby. It might not be exhaust fumes. it was vaporising glycol from the antifreeze as this was dripping onto the hot manifold I had a similar issue a few years ago. Check the heater return pipe hasn't started leaking, it runs the length of the engine and is just above the manifold. open the bonnet, start the car and check to see if you can either see or hear the antifreeze dripping on the manifold. might be worth a check Quote Link to post Share on other sites
cotswold Posted October 1, 2015 Report Share Posted October 1, 2015 Hmmm I actually now went looking for leaks under the bonnet. The previous owner has replaced the long pipe thing with three air filters bolted on the injector housing and has mini air filters attached to the rocker cover breathers and one of the is smoking blue oil fumes that are pungent (I have a bag with the old bits in). I am hoping against hope that I have not bought a car with an engine that has broken rings or valves as it is also misfiring on one cylinder. Does anyone know a good mechanic in the Cotswolds area that is just a guy and not a huge company that has to maintain expensive PR (saw an advert for Cotswold Classics and realised their premesis must cost £1000s a day and the money has to come from somewhere!). Any recommendations welcome. Thanks Charles Quote Link to post Share on other sites
whatmore179 Posted October 1, 2015 Report Share Posted October 1, 2015 Try Maynard Motorsport at Unit 10/Merretts Mill/Bath Rd, Stroud GL5 5EX 01453 833185 Speak to Mark Alex or Martin. They will tell you where you are with the engine. They also have a rolling road. Steve Quote Link to post Share on other sites
CONCRETE24 Posted October 1, 2015 Report Share Posted October 1, 2015 Hmmm I actually now went looking for leaks under the bonnet. The previous owner has replaced the long pipe thing with three air filters bolted on the injector housing and has mini air filters attached to the rocker cover breathers and one of the is smoking blue oil fumes that are pungent (I have a bag with the old bits in). Charles Hi Charles, That's an interesting observation (about the rocker cover breather). For info; the biggest reduction in fumes I have managed in my 6 so far was to fix a weeping breather pipe between the flame trap (you are missing) and the rocker cover. It was old and cracked around the pipe clip - just enough to drop a bit of oil onto the exhaust manifold! Took ages to track it down - but big improvement. I still have a bit of an exhaust smell - but I think the burning oil was the main problem. Anyway , if you can actually see blue fumes - very low cost and easy to do away with the filter and stick the flame trap in. Hope it helps, Michael Quote Link to post Share on other sites
cotswold Posted October 2, 2015 Report Share Posted October 2, 2015 Thanks guys will see what I can do over the weekend.... Quote Link to post Share on other sites
Denis Posted October 4, 2015 Report Share Posted October 4, 2015 No one has mentioned why the back of the TR6 is painted BLACK !...It wasn't done to look nice! Check out the back of any flat back Van or Truck that hasn't been washed for a while...it'll be dirty with exhaust deposits! Quote Link to post Share on other sites
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