rollingthunder1994 Posted December 6, 2004 Report Share Posted December 6, 2004 Hey Guy's, I had my 94 STS since June 04. I never planted the gas pedal, just every day normal driving. The car does not smoke, burn oil or leak. The other day on the parkway i decided to puch it. The car took off like a rocket with 106,400.00 miles on it when i looked in the mirror, i saw smoke in the back. I immediatly let up off the gas thinking i F----- something up. Smoke gone! Do you guy's think it just needed to be blown out? At idle i checked for smoke, and there was none, it idles and drives fine. The person i brought it from babied the car and never pushed it. Link to comment Share on other sites More sharing options...
JimD Posted December 6, 2004 Report Share Posted December 6, 2004 Keep doing WOT repeatedly until you no longer see a cloud in the mirror. You are blowing out many years accumulation of carbon. It's actually possible to enjoy this maneuver!! Jim Drive your car. Use your cell phone. CHOOSE ONE ! Link to comment Share on other sites More sharing options...
chazglenn3 Posted December 7, 2004 Report Share Posted December 7, 2004 First time I did mine you would have thought I blew the engine! Big ugly cloud. 4-5 wide open throttle blasts later, clean as a whistle. If I don't get at least one in per week, the next time gives a small cloud. Sure is fun Charles Charles Link to comment Share on other sites More sharing options...
Scotty Posted December 7, 2004 Report Share Posted December 7, 2004 That happened a lot when I first got my car so much so I did the same thing as you and posted a message about it, its clean now... Do some WOTs.. Link to comment Share on other sites More sharing options...
JasonA Posted December 7, 2004 Report Share Posted December 7, 2004 If you're getting black smoke, you're driving it too easy...as others have mentioned. The Northstar is a high-performance engine and needs to be spun up to stay clean. Kind of like asking a sprinter to walk a 100-m race. You'd get "crusty" too. I'm doing a fuel mileage run with this tank (currently 22.7 mpg, exclusively in-town driving), but needed to get a pesky Saturn with pimp lights off my tail the other day. I saw a trace of some dusting, but expected it because I've been babying it lately for the fuel mileage. Jason(2001 STS, White Diamond) "When you turn your car on...does it return the favor?" Link to comment Share on other sites More sharing options...
an01sts Posted December 7, 2004 Report Share Posted December 7, 2004 I bought mine new. It's not like I never gave it a stretch, but I wasn't major agressive on the throttle for the first 15 to 20k. You know, let it wrap up 3.5 to 4k, occasionally a little higher. When I would go the the occasionaly rpm, the smoke poured out of the car in embarrasing porpotions. At about 30k, she was really loosening up showing signifigant power increase. Naturally, with the engine breaking in, it was hard not to stomp on it, and it still smoked, and it smoked for about 10k. It has 65k now and sees a lot of wot. By the way, it doesn't even dust, let alone smoke, and it runs better now that it did at 30k. The Northstar is designed to run hard. I probally should have been pounding the dog crap out of it a long time ago. I don't do it everyday, but I try to do a wot everytime I drive it. Link to comment Share on other sites More sharing options...
ByStorm Posted December 8, 2004 Report Share Posted December 8, 2004 Please excuse my ingnorance but, what does "WOT'" mean? ByStorm Link to comment Share on other sites More sharing options...
EldoEsq. Posted December 8, 2004 Report Share Posted December 8, 2004 Wide Open Throttle Link to comment Share on other sites More sharing options...
tjtjwdad Posted December 9, 2004 Report Share Posted December 9, 2004 Like you folks I try to do them when ever I can. here in the Northwest it can get a little squarelly at times. I like to put mine in second gear at around 40 MPH or so and then stand on it until 65-70 MPH and then let the engine slow the car and trpeat several times. I'll tell ya' with these 300 HP cars you can really feel that torgue when you stand on it at 55-60 MPH in second gear. Definately some torque steer. Jim Link to comment Share on other sites More sharing options...
chazglenn3 Posted December 9, 2004 Report Share Posted December 9, 2004 I'm in the Northwest also, Jim. Where are you? Charles Charles Link to comment Share on other sites More sharing options...
tjtjwdad Posted December 9, 2004 Report Share Posted December 9, 2004 I live in Poulsbo on the Kitsap Pennisula. I commute weekly to Portland. Jim Link to comment Share on other sites More sharing options...
chazglenn3 Posted December 10, 2004 Report Share Posted December 10, 2004 That is probably a nice drive in the Caddy! I am in NE Tacoma, or as I like to call it "suburban Federal Way". My commute only takes me as far as Sea-Tac Airport, but I still love driving the Caddy! Charles Charles Link to comment Share on other sites More sharing options...
tjtjwdad Posted December 10, 2004 Report Share Posted December 10, 2004 It's a real hoot when I'm getting on I-5 from highway 16. I gotta keep one eye open for the WSP. The revenues are down. Jim Link to comment Share on other sites More sharing options...
Oldgamer Posted December 12, 2004 Report Share Posted December 12, 2004 You guys lucky to have WOT done. I just dream of it. At first, I drive in a city the most of the time (so I need to WOT it even more!). When I use NJ Turnpike to get my sister's I have a car full of people (mom, stepfather, wife...) and I don't wanna scare them to death. And I'm not talking about traffic... Link to comment Share on other sites More sharing options...
tjtjwdad Posted December 13, 2004 Report Share Posted December 13, 2004 It's fun but even here you have to choose when and when not to do it (such as when the DUI enforcements teams are out). WOT's are real addicting. Yea ... my fuel mileage goes to hell, but so what! I find it quite amazing the torque on these 300 HP motors up in the RPM range. Jim Link to comment Share on other sites More sharing options...
Brian in AZ Posted December 13, 2004 Report Share Posted December 13, 2004 Hey just another post to add some "concrete fact" to this string... Yeah, you should run the car hard maybe once a week to keep carbon build up from happening. It can cause a detonation-like sound known as carbon rap. It has also been the reason my EGR (electrical and EXPENSIVE) has stuck shut from build up. You should only do this when using good gas and with good oil in the car, but many have recommended putting the car in a first gear from a slow rolling start and goin WOT until 70mph. The shift is very hard and will literaly blow out the carbon when you shift. Same thing everyone else is sayin, but I figured Id let you know some good guide lines. Make sure you have good belts too..they'll snap in a sec. if they are damaged with that type of shift. That was fun. Do it a few times a month and your small engine peripherals will last longer. Carbon hurts alot of stuff in there! Link to comment Share on other sites More sharing options...
gygmy Posted December 14, 2004 Report Share Posted December 14, 2004 I've been giving our car quite a few WOTs lately. A good place to do them are on long up-hill grades. From experience it seems that the folks in smokie the bear hats prefer to sit on down hill stretches. It is also a hoot to leave everybody in the dust who thought that their car was really pulling up that hill at 75 mph. I keep telling myself this WOT therapy is good, good for the motor and good for the driver. Good, good, good,bewahhaahahahaha, must be good! Link to comment Share on other sites More sharing options...
an01sts Posted December 14, 2004 Report Share Posted December 14, 2004 You can do some wot in town without being a hazard to kids on trycycles, and silver hair ol' biddies in walkers. You juat have to use some common sense. Merge ramps are excellent places to do wots; in fact, wots can be the best merge stradigy because it puts you in charge, whether you pull in front of someone, or back off and--dare I say?--fall in behind. First-in-line-at-red-lights are another good place for in-town wots. You can get a fairly good engine wind without exceednig the speed limit. Well, not exceeding it that much. Always checkyour mirrors for red and blue car racks. And you might want to ease into the wot; otherwise, you may sit there and white smoke the tires. (I've never done a wot from standstill because, as you have already figured it out, you break traction well before wot off the line. Does anyone here have enough money to eat up tires doing wots off the line? Do they sit there and white smoke?) Yes Jim, the 300 hp has incredible torque in its upper rpms. At 70 mph + -, there is nothing that can touch them. I'm dead serious! I have never had anything even come close to hanging, and I have squared off with some major heavy duty cars, 12-13 second cars, with 5-6 0 to 60 times, and rated at 150+ top end. Lots of people think that such fact is a fib. That's because they have never driven a 300 n/s and wot it at 70 +. Link to comment Share on other sites More sharing options...
CaddyChris Posted December 14, 2004 Report Share Posted December 14, 2004 I have a serious problem with redlights. The car just likes to go, what can I say. My fuel mileage in the city is 9mpg. It's a little ridiculus but I can't help it. The highway is a whole other story though. Back to studying.... Christopher Petro 94 sts 67 coupe de Ville Link to comment Share on other sites More sharing options...
sonjaab Posted December 14, 2004 Report Share Posted December 14, 2004 I have to take moms ultra low mile 98 Deville out once in a while and give it a few WOTs ! Sure leaves a cloud the first few times !!!!! 93 DeVille-13 Chevy Impala 72 GTO - 77 Triumph Bonneville 84 Z-28 Syracuse NY Link to comment Share on other sites More sharing options...
STYES Posted December 22, 2004 Report Share Posted December 22, 2004 Yep! You have got to burn these NS engines hard! Properly maintained, you can't possibly blow one up with aggressive driving. Properly maintained and driven to the unique standard that we've come to know from the NS, it stands right beside the small block chevy as the most durable engine to ever be produced! Link to comment Share on other sites More sharing options...
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