Question about 1985 Mazda RX-7

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I need a parts list for repairing the RX-7 white smoke problem. 5k rebuilt engine, white smoke comes out exhaust after engine warms up, has a new cat. converter.

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White smoke means that coolant liquid is getting combusted inside the cylinders. That usually happens when the head gasket has lost its sealing properties, and coolant is leaking inside engine.
The part is not expensive , enter the year and subnmodel info on the following website to find the part:
Mazda RX-7 Head Gasket - Head Gasket -
To ensure that the problem is head gasket, you can do a compression test on the car. When problem is the head gasket, the coolant liquid will be slowly consumed while engine is running.
here a compression tester: Actron CP7828 Professional Compression Tester see Doing a Compression Test
To replace the head gasket follow procedure on haynes manual : 1979-1985 Mazda RX-7 Repair Manual by Haynes Publishing

Posted on Oct 07, 2009


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My car has white smoke coming from the exhaust

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White smoke out of exhaust on my 90 Bonneville......Checked oil looks fine.......What should I expect to pay to have head gasket replaced ??

I was going to say the same thing, sign of white smoke blowing out of your exhuast pipe is usually radiator fluid being leaked into the cylinder and being combusted. In this case it look like it's oyur head gasket and it needs replacment. A head gasket repair is a major work to be done, and it may take up to anywhere from 7-12hrs+ depending on how complicated things are. Most of the repair bill comes from labor and installation. In some case, the engine need to be removed from the car and to be rebuilded. You may be looking at a hefty price tag anywhere from the lowest 800 to 1700.oo+ cost wise. The more cylinder your engine is, the more the price will be. Sometime it is cheaper just to replace the engine, or entirely savage the car and get a new one if the repair bill is more then the car is worth.. You'll have to call around your local repair shop to get a quote vs replacing the engine and deciding if it is best to repair, replace, or savage.

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1 Answer

I start the car and it smokes alot when i throttle it white smoke comes out and then it starts to beep and says its over heated on the dash. i know i may have two problems but how do i fix them both and...

is it losing coolant? what does the smoke smell like? sweet? like burning anti freeze? if so it needs a new engine. I have found the dealer to have the best engines.

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