Question about 2001 Harley Davidson FXST Softail Standard

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Why do i have to change the spark plug every time for mybiketorun

I bought this dirt bike off of someone that ran it 50:1. ever sence i changed it to 32:1 then to 40:1 my bike wont ever start. i have to changed the spark plug to get it to start. ill run it for a while and it will start right back up but if i wait any longer than a half hour it wont start back up. the plug is always a little black. this sucks. what can i do

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50:1 is leaner than the 40:1 and 32:1 is very rich.
If your bike has been run with a 50:1 mix I would do a compression check.It needs to be at least 100psi to run.40:1 is the recomended mix on most 2strokes.

Posted on Jan 04, 2009

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Well i have the same exact bike when i first bought it..it did the same thing i run mine 32:1...50:1 is way too rich i put a bosch platinum 4 in my bike everybody thought that it would be too hot but it's not it is perfect i have'nt had to change my plug in like 6 months and it has more power and more compression..

Posted on Dec 05, 2008

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