With the top up, door windows open, side windows out, and back window up, exhaust fumes are being pulled into the cab area. Even with a bikini top I sometimes get fumes. The exhaust system is intact with no leaks. I realize that the air flow over the windshield makes the cab pressure lower and pulls in the exhaust, but I'm sure others have had this problem. This is an 89 4.2 with carb. which makes it stink more than injection. Any suggestions for a cure would be greatly appreciated.

the beauty of jeeping.. i am gonna guess that your exhaust pipe comes straight out the back. if thats the case, a cheap exhaust pipe tip will fix the fumage. go to your local parts store and buy one of the slant cut tips to throw on. angle it down and to the outside.. voila... no more fumes.. i.ve owned many jeeps, and they all had the same problem with the back open. 5 or 6 bucks, and no more headaches

J ust
E mpty
E very
P ocket

thats right.. you want that exhaust to come out the rear corners... angled outwards... anything straight out the back.. will be sucked in... mine work great.. only time you smell it.. is when you sit still.. and the wind blows it in.. [img]/wwwthreads_images/icons/smile.gif[/img]

http://www.jeepgod.net

84 CJ-7 401/T-18/D20/D44/D60w/4.10&Detriots/YJ frame & tub/35x16x15 Boggers
<font color=orange>survival is instinct, but living takes guts</font color=orange>

Yep just got my new exhaust finished today. The fumes were one of the problems with the old one. The old pipe exited straight out the back with a slight turn down. If you rode for five minutes you smelled like fumes all day. The new pipe exits out the side, just about at the corner. Just on the ride home from the muffler shop I could tell a difference. I still get a little whiff, but it is only when slowing down and I think the air is not moving fast enough to pull the fumes away. Have your pipe run to the side I think you'll be much happier.
BMB

There is a thread on the Zuk BBS about this as well, only they're mentioning running a hard top with no rear door.

Zuks have a problem when people cut the very end off the exhaust pipe, which normally runs out the rear and to the side.

Was your exhaust modified at the end at all, which would reroute the flow?

JEEPN
Winter Harbor, Maine
'81 CJ-8 Scrambled, It's a Jeep, Chevy, IHC kinda thing!
'88.5 Zuki, 5" Calmini, Locked, Swamped, Rolled, and just generally broken in right!