Question about Mazda 626

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My 93 mazda 626 2.0 keeps overheating i sometimes get white smoke outta the tailpipe i dont know if its the thermostat or head gasket

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White smoke is usaully bad sign of a head gasket gone bad have the system pressure tested,too check it out,

Posted on May 11, 2009

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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

What damage can be caused to a vehicle engine overheats


Hi Anonymous,
It probably depends how far you drove after the car overheated. It is extremely bad news to drive an overheated car.
Typically the head gasket (between the cylinder head and the engine block) will warp when the coolant goes dry and the engine overheats. And then it leaks - both on the outside of the engine block and with big white smoke out the tailpipe.
Replacing the head gasket is doable but expensive.
But if you don't see any leaks on the block or white smoke you may have dodged a bullet.
Hope this helps,
Bud

Jul 15, 2014 | Mazda 6 Cars & Trucks

2 Answers

Smoke coming out tailpipe


sounds like head gasket failed can try replacement again but check the head and there machine work was done for crack / damage

Jun 16, 2017 | Jeep Grand Cherokee Cars & Trucks

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My 2002 Mazda 626 overheated and I've changed the


Think about what your asking & keep in
mind, we don't have the vehicle to check out

Have you done any testing at all, that
you would like to share with us
Like battery,starter solenoid,starter

Does the overheating issue play a role?

Is the timing belt broken?

Jun 17, 2011 | 2002 Mazda 626

2 Answers

Overheating, whitesmoke from tailpipe


I hate to say it, but it definitely sounds like you have a blown head gasket. Overheating and white colored, "sweet" smelling smoke are both telltale signs of this. If it started overheating first and the white smoke came after, then you will need to have your cooling system inspected after the head gasket is replaced.

Feb 26, 2010 | 1998 Mazda Protege

1 Answer

My 1990 mazda 626 has white smoke comming out of tail pipe


could be water vapor from a bad head gasket or emissions sytem malfunction.

Feb 20, 2010 | 1990 Mazda 626

2 Answers

White smoke from tailpipe, running poorly.


Blown head gasket for sure if its a petrol engine.

If its diesel then its overfuelling.

Jan 13, 2010 | 1994 Plymouth Voyager

4 Answers

Overheating and blowing white smoke from exaust pipe


You have a blown head gasket. Have a compression teat done and it will confirm this. good luck.

Jun 12, 2009 | 1994 Honda Civic

1 Answer

Keeps overheating


You have a warped head,cracked head or blown head gasket.

May 23, 2009 | 1999 Mazda 626

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