Keeps overheating i have a 93 mazda 626 it started overheating outta the blue i get white somke form tailpipe no visible leaks can anyone help

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

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?

Check your spark plug cables and plugs. you are not running on all cylinders

Hi

The wiring color codes for 1999 Mazda 626 are--

Constant 12V+ Blue/Red
Switched 12V+ Blue/White
Ground n/a
Illumination Red/Black
Dimmer n/a
Front Speakers 6" x 8" Doors
Left Front (+) Green/Orange
Left Front (-) Green/Black
Right Front (+) Green
Right Front (-) Yellow/Green
Rear Speakers 6" x 9" Rear Deck
Left Rear (+) Blue/Green
Left Rear (-) Blue
Right Rear (+) Blue/Black
Right Rear (-) Blue/Orange
Please do rate the solution & revert for further assistance.

Thanks
Rylee

the engine may have a leaking head gasket, to eliminate this possibility a reputable auto repair shop will use a device that attaches to the radiator cap it has a blue fluid in it that will change to yellow if any combustion gas is present in the cooling system passages indicating a blown head gasket. Try the alumi seal product sometimes that works.

I used steel seal on a 93 Mazda pickup, it had 130,000 miles and it smoked like a steam engine out the tailpipe, I used the product and now have 189,000 miles and still running great.

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

It sounds like you cooked the motor. Can you turn the crankshaft with a wrench?

1990 Mazda 626 Car Stereo Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Blue/Red
Car Radio Accessory Switched 12v+ Wire: Blue/White
Car Radio Ground Wire: N/A
Car Radio Illumination Wire: Red/Black
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 4′
Car Audio Front Speakers Location: Dash
Left Front Speaker Positive Wire (+): Blue
Left Front Speaker Negative Wire (-): Blue/White
Right Front Speaker Positive Wire (+): Blue/Red
Right Front Speaker Negative Wire (-): Blue/Yellow
Car Audio Rear Speakers Size: 6 1/2′
Car Audio Rear Speakers Location: Side Shelves
Left Rear Speaker Positive Wire (+): Blue/Red
Left Rear Speaker Negative Wire (-): Blue/Green
Right Rear Speaker Positive Wire (+): Blue/White
Right Rear Speaker Negative Wire (-): Blue/Green

Hi Arelis,

It sounds like two different problems. White smoke is indicative of water in the fuel. If it was oil burning the smoke would be blue.

The oil may be leaking out. Is there evidence of oil leakage on the road when you park? Check the engine for for oil leaks.

There are additives available at auto parts stores that deal with water in the fuel supply.

Please feel free to contact me. More details will be needed to get to the source of the oil problem

Mike