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It would be best to change out your pick up tube for one without a screen and install a spin on water separating filter that will pick up any debris's that gets into your system.

My thought is make your problem at an area you can easily access....The filter!


I just had a tank built and the people that built the tank drilled a hole on the backside of the tapered intake on the pickup tube(at the bottom) (link to fuel pick up tube http://www.summitracing.com/parts/tnk-pt-16/overview/ ) so it couldn't pick up big debris and block it off.. I thought this was an awesome idea....They have been building tanks for years....Old school for them!!

Summit also carries the hose nipple for the pick up as well. The pick up tube and nipple will cost you around $30.00.

I wouldn't worry about the threads on your tank. If you bugger them up you can easily clean them out with a $9.00 tap from Amazon. Here is a link to a tap
http://www.amazon.com/Vermont-American-20373-Carbon-Steel/dp/B000GAUZ3Q/ref=sr_1_1?ie=UTF8&qid=1440244665&sr=8-1&keywords=3%2F8+npt+pipe+tap

Also, check and make certain you are not sucking air somewhere along the line between your tank and your motor. That will cause your motor to starve for fuel at top speeds as well.....Been there, done that on that one!

If the problem is a blockage at the tank often your priming bulb will collapse because of the vacuum of the motor pulling fuel on the backside of the blockage.

My .02 cents!

Vance