Question about 1990 Lexus LS 400

2 Answers

My car smokes from the exhaust area and tailpipes only when the car is cold or has been sitting for about 45 mins

Posted by on

  • poppapj Feb 02, 2010

    ok that sounds acceptable. but what if it does this all throughout the day? it smokes from the fire wall area and the tailpipe, even at 3pm. I live in Los Angeles and it doesnt get that cold during the day. could that still be the reason?

  • poppapj Feb 02, 2010

    thanx so much. i really dont want to put too much money into this car, but i need it to keep running.i'm goona try that asap

×

Ad

2 Answers

  • Level 1:

    An expert who has achieved level 1.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Guru:

    An expert who has written 7 tips or uploaded 3 video tips

  • Contributor
  • 1,326 Answers

SOunds like you have an oil leak. More then likely blow by from worn piston rings or sticking or improperly seating valve. Its so little that since the car isnt getting that hot by you running that he oil is building up and then being blown out the exhaust (similar to a diesel as they smoke if sitting for a while due to the il buildup). I would try some engine restorer (in the chrome can with black letters) about $4 4cyl, $5 for 6cyl and $8 for V8. Its worked pretty good for me when I had excess smoke.

Posted on Feb 02, 2010

  • James Brooks
    James Brooks Feb 02, 2010

    It works really well. If the car is running good its normal as the miles get up there. They recommend one every oil change but sometimes I go every other.

×

Ad

This exhaust smoke after you car has been sitting is normal condensation after it has been cold out. The coldness creates moisture and this creates a little bit of water in the exhaust system that burns off as your vehicle heats up. Normal for any car

Posted on Feb 02, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya Mechanic can help you resolve that 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 repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

1995 Toyota T100 hood release not working and white smoke coming out of tail pipe. What steps should I take?


Water coolant in combustion chamber , faulty gasket or cracked head , loss of coolant.

May 02, 2017 | Toyota T100 Cars & Trucks

1 Answer

Is it normal for my truck to smoke on a cold day even after truck has fully warmed up? Not thick smoke light white smoke thought it was suppose to stop after truck warmed up fully


white 'smoke' may be condensation (steam)? Did it do this in the summer as well? Even with a warm engine and hot exhaust the steam will still condense after it leaves the tailpipe on cold days. Your fuel contains water at microscopic level which is vaporised as part of the combustion process.

Dec 01, 2015 | Cars & Trucks

1 Answer

Replaced water pump and thermostat, replaced radiator, still overheating, white smoke coming from tailpipe sometimes, and white smoke coming from under hood, I add antifreeze but evaporates, and reser


When you say "sometimes", whad do you mean exactly? When cold? When warm? When accellerating?
White exhaust smoke (which has a sweet smell) is often an indication of a blown head gasket. You'll need a compression test or test the antifreeze against exhaust gas contamination. Although the compression test will tell you more about the contition of the head gasket.
Where exactly does the white smoke come from under the hood? Maybe there's a puncture somewhere on the radiator hose or heater hose and the antifreeze sprays on the exhaust? Please check. There still is a tiny bit of hope it's not the gasket...

Oct 16, 2014 | 2003 Mazda MPV

1 Answer

Engine smoking but no sign of overheating


Look close for oil leak from your valve cover on the exhaust.
check coolant with cold engine and top to max. next day recheck if yore losing coolant

Mar 25, 2014 | Cars & Trucks

1 Answer

Why do i get black smoke when i boot it hard out of the exhaust


Black smoke is caused by excess fuel that has entered the cylinder area and cannot be burned completely. Poor fuel mileage is also a common complaint when black smoke comes out of the tailpipe. Black smoke out the tailpipe is the least cause for alarm. Excess fuel will usually effect engine performance, reduce fuel economy, and produce a fuel odor. Some of the causes of excess fuel are a carburetor that is out of adjustment, a faulty fuel pump, a leaky fuel injector, or a faulty engine computer or computer sensor. If black smoke is present, check the engine oil to make sure excess fuel has not contaminated it. Do not start the engine if a heavy, raw fuel smell can be detected in the engine oil.

Aug 17, 2009 | 2005 Jaguar X-Type

2 Answers

When truck gets warm it will not run over 45 mph


Puffing white smoke is a sign of a blown head gasket. Coolant is getting into the cylinders.

Feb 17, 2009 | 1999 Ford F350 Regular Cab

3 Answers

Black smoke from exhaust


hi nishga
im dave; hope i can help

First you need to determine if it is actually black smoke or if it is blue smoke. There are three colors of smoke that can come from the tailpipe. It is not white smoke obviously because that is easily differentiated from blue or black and generally indicates water or antifreeze leaking past the head gasket and into the compression area of the motor. White smoke is the steam of the water/antifreeze being emitted

Blue smoke is caused by engine oil entering the cylinder area and being burned along with the fuel air mixture. As with white smoke, just a small drop of oil leaking into the cylinder can produce blue smoke out the tailpipe. Blue smoke is more likely in older or higher mileage vehicles than newer cars with fewer miles. The car has many seals, gaskets, and o-rings that are designed to keep the engine oil from entering the cylinder, and one of them has failed. If too much oil leaks into the cylinder and fouls the spark plugs, it will cause a misfire(engine miss) in that cylinder, and the spark plug will have to be replaced or cleaned of the oil. Using thicker weight engine oil or an oil additive designed to reduce oil leaks might help reduce the amount of oil leaking into the cylinder.

Black smoke is caused by excess fuel that has entered the cylinder area and cannot be completely burned. Another term for excess fuel is "running rich". Poor fuel mileage is also a common complaint when black smoke comes out of the tailpipe. Black smoke out the tailpipe is the least cause for alarm. Excess fuel will usually effect engine performance, reduce fuel economy, and produce a heavy fuel odour in the engine compartment. Some of the causes of excess fuel are a carburetor that is out of adjustment which is not likely unless you have installed an aftermarket carburated system on your non-carburated car, a faulty fuel pump, a leaky fuel injector, or a faulty engine computer or emissions sensor. If black smoke is present, check the engine oil to make sure excess fuel has not contaminated it. Do not start the engine if a heavy, raw fuel smell can be detected in the engine oil. Check the above mentioned systems and after detecting the trouble replace the faulty parts and then the engine oil and filter.

Jul 20, 2008 | 1996 Pontiac Firebird

Not finding what you are looking for?
1990 Lexus LS 400 Logo

Related Topics:

70 people viewed this question

Ask a Question

Usually answered in minutes!

Top Lexus Experts

yadayada
yadayada

Level 3 Expert

77499 Answers

ROBERT GARCIA
ROBERT GARCIA

Level 3 Expert

917 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

Are you a Lexus Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...