Motor has always run fine but last time out would not start. Believe its a fuel problem and have read the topic on how to change the filter inside the VST. One noticeable difference is when the key is turned to the on position (not trying to start) you normally here a pump noise kick on for 5-10 seconds. Sound seems to be coming from the VST. I am not currently getting that sound when the key is turned on.

Anyone have a suggestion or had experience with a similar problem?