VACUUM LEAK,K&N FILTER

[Raj AUDIocee <umdioce0@cc.umanitoba.ca>]

HEY THERE
	THIS IS MY FIRST TIME WRITING IN, THIS DIGEST IS GREAT.
I'M TYPING IN CAPITALS CAUSE MY CAPSLOCK IS STUCK.
	ANYWAYS, IN REGARDS TO THE VACUUM LEAK. I HAVE A 4000S,5 CYL, 1984. THE
CAR, AUDRE, IS IN BRAND NEW CONDITION WITH 90,000 MILES ON IT. WITHOUT
THE OIL FILLER CAP, IT STUMBLES SLIGHTLY, DOES THIS MEAN I STILL HAVE A
VACUUM LEAK.  YESTERDAY, IT MADE NO DIFFERENCE, I MADE SURE EVERYTHING
WAS CONNECTED PROPERLY, AND NOW IT STUMBLES. ALSO FOR THE PAST HALF
YEAR, THE CAR GIVES ME APPROX. 400 KM PER TANK (60 LITRES, CITY). COULD
THIS BE DUE TO THE VACUUM LEAK.
	I AM ALSO LOOKING FOR ANY SIMPLE (AND CHEAP) POWER GAINS.JUST RECENTLY
I CUT OFF THE EXAUST (CAT AND ALL), REPLACED IT WITH 2 1/4' PIPE AND A
GLASS PACKED MUFFLER ON THE END.  MADE A BIG DIFFERENCE ON THE HIGHWAY.
YESTERDAY, I PICKED UP A K&N FILTER AND INSTALLED. IT MADE NO
DIFFERENCE.(I DONT UNDERSTAND!)
	TO FINISH, I AM WONDERING, WHATS THE FINAL WORD ON NOISEY LIFTERS, MINE
ARENT TOO BAD, IT GOES AWAY AFTER AWHILE. I HAVE TRIED DIFFERENT OIL
VISCOSITIES, IT HELPS FOR AWHILE, BUT NOT THE SOLUTION.  IS IT SAFE TO
KEEP DRIVING IT, OR DO I GO INTO THE ENGINE.
	I'D APPRECIATE ANY COMMENTS.

RAJ 'AUDI'OCEE