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White smoke and sputtering

Tiny
RANDY4U
  • MEMBER
  • MAZDA RX7
1980 Mazda RX7 70,000 original miles 1.1 rotary 12A This car starts up and runs ok, but once you get going and accelerating, it smokes. If I stop at a signal, when I take off, it completly covers the whole car behind me in smoke. If I get moving along at one speed steady, it does not smoke. It does look like water is in the oil and its pretty thin. It also sputters alot.
Thanks
Randy
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Friday, November 16th, 2007 AT 5:35 PM

4 Replies

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
That is almost always a sign of a blown head gasket or a cracked/warped head.

Perform a compression test, the lowest cylinder should be no less then 75% of the highest.
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Friday, November 16th, 2007 AT 6:03 PM
Tiny
RANDY4U
  • MEMBER
  • 2 POSTS
I appreciate your reply and I would have thought all those things true if this car had a conventional motor, but it is Rotary and does not have a head or cylinders.
Thanks
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Friday, November 16th, 2007 AT 8:19 PM
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Terribly sorry I overlooked that!
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Friday, November 16th, 2007 AT 8:36 PM
Tiny
LEDGE2EDGE
  • MEMBER
  • 9 POSTS
Best thing i could say is to get a compression test done, I had one 13b do that too me, found out that the block was cracked, letting in extra oil.

hope you didnt get a cracked block.


https://www.2carpros.com/forum/automotive_pictures/119025_rx7_3.jpg

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Saturday, November 17th, 2007 AT 11:07 PM

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