You could do the oldtime cleanup method we used 50 years ago- - - - -soak the pickup tube in gasoline, set it outside in the dirt, and toss a match at it. All the sludge turns into nice easy-to-remove ash. Remove the pickup screen first, so it doesn't burn away. This procedure also works on sludged-up road draft tubes.
Jerry

Last edited by Hotrod Lincoln; 03/14/2010 4:16 AM.
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!