Question about 1994 Ford Taurus

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Knocking, overheating, blowing white smoke from the engine (front and back under the plugs), I think the heads are going, any other ideas or things to check?

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White smoke tells me coolant is getting into the cylinder's, blown head gaskets or crack heads, have a block test done.

Posted on May 25, 2010


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My vehicle got overheated. I changed head gasket. After that when I started the engine I heard a knocking sound and white smoke comming.what part of the engine should I check and what is this problem?

If you don't have a clue ,why are you trying to play auto mechanic ! How do you know it needed head gaskets ? White smoke out the tail pipe , blowen head gaskets ! You didn't do it right ! Take it to a qualified repair shop .

Nov 13, 2016 | Cars & Trucks

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What happens when your my 2003 Ford Windstar overheats and blows white smoke from tailpipe, but the needle on the temperature gauge stays at normal

If the temp gauge is at normal, then what makes you think it is overheating? Are you experiencing water being forced out of the cooling under pressure? That is what makes some think the car is overheating. White smoke from the pipe can be normal, but only for a short time after start-up. If you smell the exhaust and can smell an anti-freeze odor in it, then you probably have a blown head gasket, cracked head, or cracked block. This can cause over-pressurization of the cooling system and coolant overflow. Usually, overheating accompanies this issue and is normally the original cause of it as well.

Mar 23, 2015 | Ford Cars & Trucks

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Can bad valve covers blow your engine up ?? And what would be the signs of your engine about to blow up ?

No, the valve cover just bolts to top of engine, it just sits there with no pressure on it or against it, a protective cover, as it were. With a gasket seal on it to prevent oil leaks.
The signs would be a loud knocking, like a loose piston rod that could break apart anytime and fly through the oil pan or engine block. Other signs may be more subtle: a bad head gasket may cause a lot of white smoke out the exhaust-coolant is being burned in the cylinders. Engine won't blow up, but will run rougher and rougher till it finally dies. Odd noises in the engine is worrisome, as it may indicate an internal mechanical problem, if not fixed it may kill the engine.
Overheating is probably the biggest problem with engines, extreme overheating can quickly damage engines, causing costly repairs.
Change the oil regularly, keep the coolant clean and full, have a clean gas filter and air filter, new spark plugs about every 25,000 miles, fix minor problems immediately-don't let them languish and lead to bigger problems, in other words regular maintenance will diminish the possibility of engines going bad.
I hope I've answered your question, don't know what to add. Sometimes the engine can get a problem with no previous signs-things just happen.

Aug 30, 2013 | Cars & Trucks

1 Answer

My 01 gmc jimmy made a loud pop and white smoke started blowing out from under the hood. Now it makes a knocking sound but not like its low on oil or inside the motor. I dont have water in my oil and now...

The smoke under hood means that u need replace gasket between exhaust pipe and engine but smoke and knocking is not very good, it looks like your engine pistons has cracks and u r loosing oil by smoke time to time, i'd buy used engine from crashed car with less miles on it

Sep 21, 2017 | Cars & Trucks

1 Answer

Excessive white smoke out of blow by

Just letting you know that white is water, blue is oil and black is gas coming out of the exhaust.

Jul 20, 2017 | Cars & Trucks

1 Answer

Overheating problem, slight knocking coming from motor, small amount of whiteish smoke from exhaust

Ok stop leak is a gimmick, im thinking you plugged your radiator up with it, if you are blowing white smoke out the tail pipe chances are blown head gasket from overheating, either way the t-stat should be replaced in doing either job. Chances are the heater core will be plugged too.

White smoke= Water/coolant in combustion chamber
Blue smoke= Oil in combustion chamber
Black smoke= excessive fuel in combustion chamber

Jul 09, 2012 | Cars & Trucks

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Have a knocking noise in engine and white smoke coming out exhaust? Does this year accord have a timing belt ?

The white smoke is from a blown headgasket, your coolant is leaking into one or more cylinders and that's actually steam that you see coming from your tailpipe.
When this happens, your coolant level drops (because it's pumping it out the tailpipe), your car overheats, and of course it will knock as it overheats. An overheated car is sluggish, as well.
Another bad thing that occurs by driving a car with this problem is that the coolant is washing the oil off your cylinder walls and your rings will tear up your cylinder walls as they self-destruct.
Head gasket replacement is not an easy fix nor is it cheap, and usually you'll need to get the head machined to make it perfectly straight again - heads warp from overheating. A good mechanic can do a head gasket replacement in a few hours.

Overheating can cause knocking.Your best bet is to replace your motor because usually the knocking noise is caused by a spun bearing which would cost a lot to repair.

Oct 10, 2009 | 1988 Honda Accord 4 Door

1 Answer

My ranger run's fine on level but on hill's

you got head gasket problems, white smoke is an indication of water turning to steam, probably doing uphill because the engine is under greater load.i think the knocking is pre ignition, carry out an engine compression test to verify your head gaskets integrity

Feb 16, 2009 | 1994 Ford Ranger Supercab

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Car engine throws out thick smoke

look for problem injectors and leaking injector seals

May 09, 2017 | Dodge Neon Cars & Trucks

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