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Automotive Repair Car Troubleshooting Topics   Car Troubleshooting   Engine Troubleshooting   Engine Fault Codes   Electrical and Wiring   Transmission Problems Car Repair Topics   Car Making Noises   Car Stereo Repair   Heating or AC Issues   Motorcycles and ATVs   Tricks of the Trade   Truck Repair Advice Site Options:      Login   Sign up here! Latest Forum Post   2006 Toyoto Camry XLE Driver Side Electric Window Trouble Hello, Looking for a little brain help ...   Tierod end change caused some kind of leak Hello so I just took my car to the nearb...   2011 Dodge Nitro OBD scanner seems to drain battery in 10-20 minutes When I bought this car in summer 2023, a... Grounding Cable, 2017 Jeep Renegade Trailhawk The Cable that connects my negative batt... Rough Idle (Found new thing) Hi everyone. First of all sorry for bad ...     equipment hey yall. im a first year engineering st...   HELP I have a 1956 1/2 ton panel truck, 69 35...   Howdy     Just wanted to s...   ABS/Tractiob/Brake Lights on But No DTCs Hello all, Recently while driving m...   Chevy strut replacement I'm trying to get a sensor of some kind ...

Search Auto Parts Search 2002 Nissan altima 2.5 sometimes smokes alot Sign up here!   Email This Post Auto Repair Home>> Automotive Repair>> Engine Troubleshooting lucio santiago User Nov 4, 2013, 5:50 PM Post #1 of 4 (2059 views) 2002 Nissan altima 2.5 sometimes smokes alot Sign In Hello i have Nissan Altima 2002 2.5 and sometimes blue smoke comes out and sometimes its fine and the engine does not have any noise and i would like to know if this can be a simple fixing or a big problem a guy told me that probably the oxygen sensor needed to be changed but i don't know if that's true Thank You very much and i hope to hear soon from you Discretesignals Ultimate Carjunky / Moderator Nov 4, 2013, 6:22 PM Post #2 of 4 (2051 views) Re: 2002 Nissan altima 2.5 sometimes smokes alot Sign In Really don't think an o2 sensor will solve your smoke problem. Blue smoke usually indicates that the engine is burning oil. This could be from piston rings, valve guide seals, or PCV system issues. Check your spark plugs and see if you can tell which cylinder(s) is burning oil. Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved. (This post was edited by Discretesignals on Nov 4, 2013, 6:41 PM) lucio santiago User Nov 4, 2013, 6:38 PM Post #3 of 4 (2044 views) Re: 2002 Nissan altima 2.5 sometimes smokes alot Sign In OK i'm going to check the spark plugs again the last time i checked them they were fine they were clean and i don't see anything wrong with the spark plugs but i'm going to check or do you think i would have to use any additive Discretesignals Ultimate Carjunky / Moderator Nov 4, 2013, 6:41 PM Post #4 of 4 (2038 views) Re: 2002 Nissan altima 2.5 sometimes smokes alot Sign In Just a heads up: They thought is would be good to have the catalyst attached to the exhaust manifold up close to the engine because it would heat up the catalyst quicker. The downside of that design is if the catalyst started coming apart, the exhaust pulsation during valve overlap would suck the crap,which acts like sandpaper, right up into the cylinders. The engine would eventually burn excessive oil and even have low compression in some cases. I've seen it happen on a 3.5L Pathfinder. Avoid the exhaust manifold baby cats in my opinion if your looking for a car. If this is the case with your vehicle, it needs an engine and cat. Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.   Email This Post   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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