1997 Triumph Trident 900 Logo
Robert Bromley
Robert Bromley Posted on Dec 23, 2012
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Triumph trophy 900 carb 1997 starting problem. sometimes the ****** just will not start it turns over back fires turns over and starts, sometimes starts second turn. has had new coils fitted tappets a

Triumph trophy 900 carb 1997 starting problem. sometimes the bugger just will not start it turns over back fires turns over and starts, sometimes starts second turn. has had new coils fitted tappets adjusted could it be the pick up??? its beginning to drive me mad. HELP

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  • Posted on Dec 23, 2012
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Hmm sounds to me your Carburetor needs cleaning, check your intake might be just a bad air filter, also change you spark plugs and make sure they are on proper adjustment. that what i did when i have that problem... hope it help

3 Related Answers

DoubleClutch

Greg O'Day

  • 376 Answers
  • Posted on Sep 30, 2009

SOURCE: triumph 900 trophy, fires on two cylinders, third fires on &off

Its a carbonation problem or ignition problem.

Testimonial: "thanks i know this it was finding it ,have sorted it ,was a coil braking down ."

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Anonymous

  • 280 Answers
  • Posted on Jan 24, 2010

SOURCE: 1993 Triumph Trophy 900 Help I need the Carb main

is this a 3 or 4 cylinder engine - can you give the exact cc, i have some data but not sure if its right.

ahlidap1961

Francisco Padilha

  • 81 Answers
  • Posted on Oct 20, 2011

SOURCE: triumph tiger 900 will not start. press the

Hi Check the security switches : side stand, neutral ; maybe one of them is faulty and sometimes cuts the power to your starter. Usualy a good cleaning with a degreaser spray (brakes cleaner) is enought to solve the problem.
Good luck ( by the way I've got a sprint 900 myself- same engine- great bykes)
Francisco

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I'm not too familiar with Triumphs but assuming your bike has carbs and not fuel injection, then it is time to clean the fuel system. Remove the water trap bowl at the bottom of the petcock, (gas valve). Is there any water or trash in the bowl? Drain a cup of gas from the tank. Is there any water or trash in the cup? Dump it, clean it and re-mount it, ( not all bikes have a water trap bowl ). Install an in-line fuel filter.

For each carb > Drain the carburetor. There should be a screw on the lower side of the carb float bowl. Remove the screw then replace it after the fuel drains. Turn the gas back on and wait a minute for the carb to fill with gas. Install a new stock NGK spark plugs and start the engine. If the bike doesn't start and run properly then shut off the gas and remove the carburetor from the engine.

Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Remove the idle screw and the air screw on the outside throat of the carb and spray into the screw holes as well.
< < READ CLOSELY > >
Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two screws down. Only screw these in until they LIGHTLY seat. Now turn each screw one and one half turns outward. Put the rest of the carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine. This process should get you back on the road.

You may want to go to a richer main jet. If the jet is (for example) a 178 then change to a 180 or 182. This should fix the top end problem. Do this only if cleaning the carbs doesn't work.

Please rate this solution. Thanks!
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Apr 20, 2009 • 1996 Triumph Trophy 900
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