1996 Triumph Adventurer 900 Troubles

Hi
Here’s what I’m running into. I put the original needles in with the c clip in slot 2 as recommended by mikuni. Have good spark, gas in the float bowl but can’t get it to start. Carbs have been fully cleaned and new floats, pressure tested and held pressure. Cleaned the coil connectors and the spark plugs. I did have it running a couple of weeks ago and it ran but only on cylinders 2 & 3. Temp check on exhaust. Cylinder 1 70 degrees and 2 & 3 400 degrees. 2 & 3 was shooting out black smoke and flames with loud backfire. Now after every thing I’ve done today it still will not start. 16k miles. Any help or advise would be greatly appreciated. Thx in advance.

 

Hi,
I’ve only used rec fuel with Techron additive. So shouldn’t be gummed up.

 

Hi
That’s what I’ve done. All new parts oem triumph from euro cycle in Vegas. New floats, complete cleaning. Pressure testing of the floats. Float levels to spec. New carb to head rubber mounts. Made sure all the tiny holes were cleaned with a torch tip cleaner. Ordering new stick coil conversion kit. New air filter and all carb gasket kits all oem. Can’t think of much else. Battery is new plus on a tender. Plus synced the carbs.

 

Hi
Torch tip cleaner and was extremely careful cleaning emulsion tubes. Put new pilot and main jets from triumph but didn’t work as well as the originals. It ran great when I parked it in November. Did have it running but like I mentioned black smoke and flames when it backfired on 2 & 3 but no fire on 1 when I started it two weeks ago.

 

I’ll give that a try. Thank you.

 

Hi
I’m going to take it to a shop and let them diagnose it for me. Thx for the info. Plus has over 16k miles on it.