1998 Suzuki DT 200 wont start after long layup

[mikeydof3]

hello all new to the forum and the forum thing so going to give it a try i have a 1998 suzuki dt200tclw2000281 been in the family since new and it has never let me down now after a long layup maybe 3or4 years it wont start up so i think the gas went bad and found the fuel filter was clogged with leaves i cleaned it out and have new gas flowing thru to the low pressure pumps and the high pressure pump but have not pressure tested it yet and now going to work on the fuel rail and injectors and have not checked the spark yet i had read on one of the posts here if you used starting fluid it would start and i was wondering if that was true if the fuel injectors were clogged and the motor does turn over like it would normally want to start thank you for any input you might have

[Solarman]

Cleaning the fuel system is the first step. I can't imagine getting leaves in fuel filter, just seams impossible?
After cleaning the filters, clean all the lines, pay attention to what the insides of the fuel lines look like. If any of the lines are degrading (from ethanol fuel), all the lines should be replaced (if you don't, you will have to do the entire cleaning again due to black sooty deposits from those degrading lines).
The VST will need to be cleaned, there is an in- line-filter at the bottom of the VST that goes to the high pressure pump (clean that screen).
Then with clean fuel, plus fuel cleaning additive, disconnect the fuel line coming back to the VST from the top of the fuel rail, place that hose into a glass jar, pump bulb then turn key on (not start) for a few seconds. This will flush new fuel through entire system. If glass jar shows any contaminated fuel, repeat a second time just for a couple seconds each time.
I don't think injectors are that bad, but may be good to clean them.
Remember, always put water (muffs) on impeller anytime you're turning flywheel, it relies on water for lubrication.

You should never need starting fluid. Once your fuel system is clean you shouldn't need it.

Good luck, post back when able, let us know how the work is going.