Question about 1991 Lexus LS 400
Why does it smoke lot kind of white color
Posted by Anonymous on
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
SOURCE: Burning oil
For some unknown reason(s) the Live Session/Chat was disconnected. Our apologies for any inconvenience.
In any case to finish the 2nd suggestion. You may want to discuss this issue (smoke and oil consumption) with your dealer. Cite a Lexus Technical Service Bulletin specifically addressing this issue "Excessive oil consumption caused by sludge buildup on the cylinder heads. Company is extending warranty. (1997-2001)".
You may want to reference this USA Today article or the discussion in this page.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
Good luck and kind regards.
Thank you for using FixYa.
Posted on Jul 26, 2008
It could be the intake gaskets or even still the head gasket. How about the coolant ? Did you refill with same type coolant ? Have you noticed if it's thick and gooey ? mixing coolants will sometimes produce a thick gooey coolant that clogs up the cooling system. If the car ran hot it could also be a cracked head or block. Warped heads also. Somehow the coolant seems to be getting into the cylinder(s).
Posted on Feb 08, 2009
Not sounding good if white smoke, usually indicates coolant into cylinders via bad head gasket or head, maybe intake leak, or piston rings gone. You, or someone didn't overfill oil by chance did you?
What's mileage & did you have any warning signs or did this just happen all of a sudden.
Posted on Apr 26, 2009
Valve stem seals can cause this problem, but normally only when first started. Oil in the rocker cover seaps through the oil seals into the cylinders and is burnt up on start up.
Try a "STOP A LEAK" additive and it may reduce the oil consumption and smoke.
I found some on e-bay and it worked on my tired old escort. It even stopped the rattling tappets.
Posted on Aug 23, 2009
White smoke is either steam or
coolant. Oil smoke is blue, fuel is black. The smoke
is water or coolant boiling and then coming out the exhaust as vapor.
If the weather is cold, water will condense in the exhaust system after shutdown, then come out as steam on startup. This is OK. If you see the smoke after driving on the highway for an hour or it is an all-the-time event, you have a problem.
If you have a problem, most likely, at this age, it is a leaking head gasket. Possibly the cylinder head is cracked. Valve problems are possible but less likely. Keep track of how much coolant you add to keep it at the full mark. Obviously, this is expensive to fix.
The problem was bad/worn valve stem seals which allowed oil to seep into the cylinder heads when the engine wasn't running and burn off when the engine was started creating the white smoke. If it is valve stem seals, they are not too expensive to replace however I would suspect your mechanic will want to do a complete valve job which is a little more costly.
Hope thos help (remember comment and rated this).
Posted on May 10, 2010
Tips for a great answer:
Jan 26, 2014 | Peugeot 307 Cars & Trucks
Feb 06, 2013 | Cars & Trucks
Jan 28, 2013 | Cars & Trucks
Apr 12, 2012 | Cars & Trucks
Jan 27, 2011 | 1995 Lexus LS 400
Dec 12, 2010 | 2003 Ford F350 Super Duty DRW SuperCab
Oct 04, 2010 | 1988 Ford F 250
Apr 02, 2009 | 1994 Chevrolet K1500
Nov 30, 2008 | Saab 9 Cars & Trucks
Jul 29, 2008 | 1995 Lexus LS 400
Jul 25, 2018 | 1991 Lexus LS 400
49 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: