I HAVE A FUEL STARVATION PROBLEM WITH MY TRIUMPH TROPY 900, WHAT COULD BE THE PROBLEM

Your description indicates a serious fuel starvation problem but a very weak spark could cause or aggravate the condition.

its mostly fuel blockage,starvation.blocked jets,fuel tap filter chocked,or loose wire on ignition wiring,bad earth on battery lead,

I would start by checking for kinks in the vacuum hose. The situation you describe would usually result in a low vacuum situation and if the hose is kinked, this could lead to the problem you describe. There could be a problem with the tap itself and a good place to look for more info is at www.triumphrat.net, the Triumph owner's forum.

If the bike has an electric fuel pump, it may be failing at times. Check fuel pressure to confirm. Hope this helps!

Have you checked your fuel floats ,You may be suffering from high speed fuel starvation .try adjusting you floats to allow the maximum fuel into your carbs with out over flowing .You could also check to compression on the cylinders ,you may have a compression problem at high speed ,and this will cause hunting untill your engine gathers momentum and drives through it .

Its a carbonation problem or ignition problem.

Google " motorcycle salvage triumph " You should be able to find what you need there, and save some cash as well!

Pleas rate this answer. Thanks massierva! :)

First, I would check all the usual suspects. Roll over valve, fuel petcock, vacuum line to petcock, fuel cap vent, fuel filters(all three), coils, crank sensor, sparkplug HT wires and caps. All electical connections(side stand switch, clutch switch, ignition switch, engine cutoff switch). Battery condition. Wireing harness around the headstock(broken wires due to pushing/pulling on harness). Also check the plug for the alarm unit located in front of the battery box. Corosion in the plug can cause an intermitent short on the gray with green-dot wire that goes to the Igniter(there is a wire that loops around on the back side of the plug). Check all these things before throwing money at it. Also, the Igniter can be tested at a Triumph dealer. Baxter Cycle (www.baxtercycle.com) would be a good source for used parts from breakers. I've heard of someone that has rebuilt Igniters to swap, but I'll have to search for them again, I think in the UK or Europe. Hope this helps.