captainscarlet Posted January 21, 2013 Share Posted January 21, 2013 Hi, I've joined out of interest and desperation. I have a TRX850 which is a fantastic machine. However over the past few months it has become harder and harder to start and now coughs occasionally but doesn't come alive. Thoughts are - K&N filter I fitted in spring has adversely affected carburation. Choke is causing flooding, but no joy if starting without choke from a rest. Looking at some other posts, my worry is that valve clearance could be a problem - is that a common thing with TRXs? Is there someone in the North-West who knows about these things - any recommended workshops? Thanks, CS Link to comment Share on other sites More sharing options...
Moderator Cynic Posted January 21, 2013 Moderator Share Posted January 21, 2013 Be handy to know your mechanical understanding and where you are. Long time biker etc. Something in the new members would be good. Cant really help with the bike. 2 stroke man myself. Although i nearly bought a blue trx a long time ago. Basically a tdm so plenty of folk on here should be able to put you right. Hope we help..... Link to comment Share on other sites More sharing options...
dt502001 Posted January 21, 2013 Share Posted January 21, 2013 Hi and welcome the list of your problems could go on and on soooooo.Start with the basics new plugs and check spark,confirm the valves aren't tight ( they tighten with age, a compression test or leak down test can be the quick way to check they aren't open) clean the air filter. Clean up the carbs ,,,You didn't include what year your bike is or mileage or how often you ride it?? Link to comment Share on other sites More sharing options...
pilninggas Posted January 21, 2013 Share Posted January 21, 2013 probably worn emulsion tubes. also be aware that big twin needs good coils and leads. best to introduce here and ask for help in one of the discussion areas. Link to comment Share on other sites More sharing options...
Moderator Airhead Posted January 21, 2013 Moderator Share Posted January 21, 2013 yeh i'd go for the worn emulsion tubes suggestion capt, have a look at them you may see the bore looking a bit oval shaped? Link to comment Share on other sites More sharing options...
blackhat250 Posted January 21, 2013 Share Posted January 21, 2013 Bit of a Mysteron this one ,,,,, 1 Link to comment Share on other sites More sharing options...
captainscarlet Posted January 24, 2013 Author Share Posted January 24, 2013 Thanks for the replies so far. I expected the subject of emulsion tubes might come up. My mechanical knowledge is reasonable, I'm in my 50s and never really grew up. The TRX is an "S" reg, about 30K on the clock, used regularly until it let me down at work. Currently has K&N filter fitted, Micron race pipes which are rather fruity ;-) Doesn't drink oil the way some TRXs and TDMs do. What are the general views on changing emulsion tubes - not for the faint hearted or straightforward? Can I check Valve clearances with the engine in situ or does it have to come out (I have no workshop). Great to have some support. Thanks, the Captain. Link to comment Share on other sites More sharing options...
captainscarlet Posted February 12, 2013 Author Share Posted February 12, 2013 Latest update - I've checked the plugs - they're dry after trying to start and there's a good spark when I turn her over, so not flooding, not ignition. Took the tank off and the fuel tap started misbehaving, dribbling everywhere which it shouldn't if there's no vacuum. Possible issue - fuel not getting through? Can Trixies suffer blocked fuel taps? I know it was dribbling, but if that's as much as gets through it would never fill the carbs. Anyway, will get one on order. Checked the K&N & re-seated it. Still not starting :-( S.I.G. The Captain. Link to comment Share on other sites More sharing options...
Moderator Airhead Posted February 12, 2013 Moderator Share Posted February 12, 2013 suck on the vacuum pipe if you want to check the flow captain Link to comment Share on other sites More sharing options...
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