88red4cyl Posted July 22, 2008 Report Share Posted July 22, 2008 This is on my 99.. I've noticed at stoplights smoke rising from the exhaust when I look in my mirror.. Looks like really light grey smoke... It's not coolant from what I can tell.. The exhaust doesn't smell sweet, and I'm not losing coolant... Best way to describe it is when it's cold outside and the cars running, and you see smoke coming from the exhaust.. It's like that, except it's not cold outside.. Any ideas what's causing this? Quote Link to comment Share on other sites More sharing options...
EviLette Posted July 22, 2008 Report Share Posted July 22, 2008 Umm... running rich, maybe? Or carbon buildup brekaing loose and getting urnt off. Quote Link to comment Share on other sites More sharing options...
IRONDOG442 Posted July 22, 2008 Report Share Posted July 22, 2008 Did you put in an oil hungry LX-5 andn ot tell me about it! To make my car run faster this is what I did. The best EVAR fishing pole mod !! Quote Link to comment Share on other sites More sharing options...
MonteCarloDude Posted July 22, 2008 Report Share Posted July 22, 2008 LMAO!! Quote Link to comment Share on other sites More sharing options...
ManicMechanic Posted July 22, 2008 Report Share Posted July 22, 2008 Did you put in an oil hungry LX-5 andn ot tell me about it! To make my car run faster this is what I did. The best EVAR fishing pole mod !! I want those wheels. Anyway Will. I'd do a compression test. Quote Link to comment Share on other sites More sharing options...
88red4cyl Posted July 22, 2008 Author Report Share Posted July 22, 2008 Did you put in an oil hungry LX-5 andn ot tell me about it! To make my car run faster this is what I did. The best EVAR fishing pole mod !! I want those wheels. Anyway Will. I'd do a compression test. It didn't smell like oil in the exhaust.. Just seems to do it until the car gets to operating temp, and then it stops.. You can rev the hell out of it, and it won't blow a blue cloud or anything.. Or was there something else you were thinking of withthe compression test? Quote Link to comment Share on other sites More sharing options...
rockfangd Posted July 23, 2008 Report Share Posted July 23, 2008 it sounds like condensation in the exhaust. do you run 87 or 89>? Quote Link to comment Share on other sites More sharing options...
88red4cyl Posted July 23, 2008 Author Report Share Posted July 23, 2008 I run 87.. Quote Link to comment Share on other sites More sharing options...
alphagtp Posted July 23, 2008 Report Share Posted July 23, 2008 it sounds like condensation in the exhaust. do you run 87 or 89>? yep, condesation is my guess Quote Link to comment Share on other sites More sharing options...
88red4cyl Posted July 23, 2008 Author Report Share Posted July 23, 2008 What would make that much condensation? My 95 doesn't do that... Quote Link to comment Share on other sites More sharing options...
AWeb80 Posted July 23, 2008 Report Share Posted July 23, 2008 is your 99 the same one w/ horrible MPG's? Quote Link to comment Share on other sites More sharing options...
Drummer Posted July 23, 2008 Report Share Posted July 23, 2008 My Z34 did that with a hollowed cat Quote Link to comment Share on other sites More sharing options...
Regal_GS_1989 Posted July 23, 2008 Report Share Posted July 23, 2008 I noticed that my 89 with no cat shows a lot more condensation in the exhaust than my 2000 with the cat. Same with my truck, which has no cat. I wouldn't worry about it. Also, the air is usually a lot denser and humid first thing in the morning, so that can also contribute to that. Quote Link to comment Share on other sites More sharing options...
88red4cyl Posted July 23, 2008 Author Report Share Posted July 23, 2008 is your 99 the same one w/ horrible MPG's? Yep, it's the one getting 12 mpg... I made a thread about the map sensor.. I think I have a vac. leak around the base of it.. I put up a pic in that thread showing a gap around the base of the sensor, which I'm trying to figure out if the gap is supposed to be there, or if somethings warped.. Quote Link to comment Share on other sites More sharing options...
88red4cyl Posted July 23, 2008 Author Report Share Posted July 23, 2008 Also, the air is usually a lot denser and humid first thing in the morning, so that can also contribute to that. Yeah.. It does it even when it's the middle of the day and 90° out too.. Pretty much anytime it's been sitting for a while.. I'm sure it's just condensation, but I just don't see how it's getting that much in there... I have noticed also that the exhaust seems to get hot really fast.. I'll drive up to work (like a three minute drive) and it sounds like I made a day long trip on the interstate when I park it. Quote Link to comment Share on other sites More sharing options...
AWeb80 Posted July 23, 2008 Report Share Posted July 23, 2008 I Bet The Cat Is Doomed. See If It Looks Red At Night....On A Got Night And It Has Been Running. It Might Glow A Bit Quote Link to comment Share on other sites More sharing options...
88red4cyl Posted July 23, 2008 Author Report Share Posted July 23, 2008 I Bet The Cat Is Doomed. See If It Looks Red At Night....On A Got Night And It Has Been Running. It Might Glow A Bit Would that make the car run hotter by any chance? Quote Link to comment Share on other sites More sharing options...
AWeb80 Posted July 23, 2008 Report Share Posted July 23, 2008 If Your Cat Is Clogged, The Exhaust Will Heat Up Quickly And Possibly Glow Faintly In A Dark Night. Quote Link to comment Share on other sites More sharing options...
88red4cyl Posted July 23, 2008 Author Report Share Posted July 23, 2008 The Exhaust Will Heat Up Quickly And Possibly Glow Faintly In A Dark Night. It definetely seems to heat up very quickly, like i said in another post, although I don't have any way of temping it... I'll take it for a spin tonight and see if it glows or not.. Quote Link to comment Share on other sites More sharing options...
AWeb80 Posted July 23, 2008 Report Share Posted July 23, 2008 Go To A Dark Spot And Shut Your Lights Of So It Is As Dark As Possible, Put It In Park And Rev It Up While Looking Underneath. Quote Link to comment Share on other sites More sharing options...
1990lumina Posted July 24, 2008 Report Share Posted July 24, 2008 I Bet The Cat Is Doomed. See If It Looks Red At Night....On A Got Night And It Has Been Running. It Might Glow A Bit Would that make the car run hotter by any chance? Yes a plugged cat 9if bad enough) will cause the motor to run a lot hotter. Exhaust gases can't get out fast enough because there is too much pressure and they'll stick around and heat everything up. Quote Link to comment Share on other sites More sharing options...
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