Yes the intake leak check intales something like using some type of
combustible gas around the intake hoses and waiting until you hear the motor
rev.  But I still think that it is the junk in the gas tank.  I have read how
to drop a tank in the manual and have done it on Golf and Rabbit pickups so I
don't see how it would be all that hard.  I had to do it on my Rabbit Pickup
and I dropped the tank, got a little gas and put it inside and sloshed it
around to try and stir up any rust and junk on the bottom, then dumped the
gas into a container to use for lighting fires later.  Let me know what
happens because if I am right I want to let my buddy know about it!  Happy
Thanksgiving to you!
Ken Wilford
John 3:16