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post #1 of 3 (permalink) Old 05-16-2020, 06:53 PM Thread Starter
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Ltr 450 wont stay running

I have a 2007 ltr 450 that has sat for 4 years and would not start I had alot going on in life and never attended to it. I finally got around to wanting to fix it and started with the valves. I adjusted valves to appropriate clearance and added new fuel and it fired right up right away. It will idle and rev up pretty well for about 60 seconds and dies it will start right back up but wont continue to idle unless it sits for a few then it will idle for about 60 seconds again. Where should I start. Swirl Fuel filter was deleted long ago with a clear inline filter and there is gas going through it.
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post #2 of 3 (permalink) Old 05-17-2020, 07:34 AM
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I had same issue. Mine sat for nearly 5 years but with gas in it, which was a mistake. I replaced the fuel pump, cleaned out the fuel tank, (the area with the original fuel filter), I installed an inline too. That gunk in the fuel system was fn nasty!
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post #3 of 3 (permalink) Old 05-22-2020, 06:29 AM
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Try starting it with the vacuum line off the sensor it runs to under the back left fender or make sure it dont have anything in the vacuum hose, not to sure, my bike don't like to start right now and can't figure it out lol, also with a flat head you should be able to reach your idle air flow screw that is on the left side of throttle body, unscrew about a 1/4 of a turn and see if that helps
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