Date: Fri, 04 Jul 2003 11:44:39 -0400 From: wysiwyg.docnopsamspring.com Subject: Re: Classic 900 Turbo engine fumes...?
nope i'm not kidding and if you read the post you will see that i have discsussed the vent system as well as the drain holes. both are a potential problem. think about it. with the sun roof back and with the aerodynamic vacuam over the top of the car the drain tubes are a likely place for a pull of air off the rear of the car. if you don't think the vacuam exists try spraying some air freshener up the drain tube with the sunroof closed. don't spray it anywhere else. then drive down the road at 60 mph and open the sunroof. you will smell the air freshener inside the car when it gets sucked inside by the vacuam. this tube won't vent moisture up but it sure gets the vapors. most are pulled right back out the open top. but you will smell the scent. as for the bosch plugs.. i had a problem with the number one piston on one of my saabs. seems it got a hole burnt in it. i prefer the bosch plug as i do feel that the ngk contributed to this problem. Grunff wrote: > wysiwyg.docnopsamspring.com wrote: > > aerodynamically the 900 pulls a vacuam on the roof as the air passes over the > > > > roof and the rear of the car is in a constant state of vacuam if the car is > > moving. to see this observe another 900 on a misty day as it speeds by you. > > you will see the effects of the aero design. when you open the sun roof this > > vacuam is shifted to the interior which has several air flow hoses that feed > > to the interior, both for ventalation as well as drainage for the sun roof. > > if you look underneath the car around the rear axle you will see these nubs > > of rubber tubing hanging out of the bottom of the body. two things could be > > happening to cause the vapors to get back to the interior. 1) these hoses > > could be clogged, pinched or rotted in two, which would change the > > ventalation aerodynamics. > > You're kidding, right? You don't seriously believe that the > drain holes are there for ventilation purposes?? > > > rear of the car to be sucked back inside. the reason it smells like it is > > coming in through the sun roof is because it's being sucked out through the > > sunroof and that's where your head happens to be. as for the bad smell on > > decelleration it is most likely that you are burning rich, or have a bad > > front main seal (firewall side of the engine) run a couple of tanks of amoco > > ultra premium gas and use an injector cleaner in each tank (maybe three > > tanks) this should clean up the injectors, replace the plugs (use only bosch) > > OEM is NGK, and most people including myself have found that > NGK's outperform Bosch plugs on saab turbo engines. > > -- > Grunff
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