Why is there white smoke coming out of my rear exhaust?

Asked by Aug 10, 2015 at 05:18 PM about the 1999 Chevrolet Corvette Convertible

Question type: Maintenance & Repair

I have  C5 LS1 The car started idling hard last night when I left work. I noticed an odd
order, not like gas, like acetone?  The engine never really smoothed out , but I was in
a residential neighborhood and did not get above 25mph. Within a couple of minutes
the engine light went on and shortly after that white smoke came out out of the rear
exhaust. When I turned the car off white smoke continued to slowly come out of the
rear exhaust, majority on the left side. Checked oil, looks clean and level is good.
Only use Chevron Supreme at the same station, I don't think I got a lesser, but any
thing is possible. The car is not driven hard, but regularly. 85,000 miles on her.
Thanks for your help.

5 Answers

47,805

Check the engine coolant level. Could be a cracked cylinder head, cracked block or a bad head gasket. I hope it is something else.....

1 of 1 people found this helpful.
95,115

Check the coolant level, usually white smoke out the exhaust is water in the combustion chamber, most common is a blown head gasket, but have also seen a cracked head do the same thing. A shop can perform a block check and that should confirm the trouble.

2 of 2 people found this helpful.

Thank you both so very much. I spent a few hours doing some research and came up with the same conclusion. I have learned that a cracked cylinder, or block, is bad. Keep your fingers crossed, and thanks again!!

One more question. I am assuming that the car should not be driven, and flat-bedded to a shop?

47,805

Don't drive it or you may do more damage.

Your Answer

Add photo

Related Questions

Corvette

Looking for a Used Corvette in your area?

CarGurus has 20,684 nationwide Corvette listings starting at $3,995.

ZIP:

Search Chevrolet Corvette Questions

Chevrolet Corvette Experts

#1 John Carson
John Carson
Reputation 2,340
#2 Vincent Parker
Vincent Parker
Reputation 1,470
#3 carGrrl
carGrrl
Reputation 1,420
View All

Related Models For Sale

Used Chevrolet Camaro
244 Great Deals out of 31,194 listings starting at $369
Used Ford Mustang
543 Great Deals out of 45,845 listings starting at $1,999
Used Porsche 911
91 Great Deals out of 4,513 listings starting at $10,500
Used Dodge Viper
8 Great Deals out of 309 listings starting at $24,600
Used Chevrolet Silverado 1500
1,764 Great Deals out of 181,202 listings starting at $250
Used BMW M3
50 Great Deals out of 1,361 listings starting at $3,800
Used Ford F-150
2,058 Great Deals out of 207,340 listings starting at $1,499
Used Mercedes-Benz SL-Class
45 Great Deals out of 2,814 listings starting at $4,530
Used Porsche Boxster
45 Great Deals out of 1,146 listings starting at $3,920

Used Cars For Sale

2017 Chevrolet Corvette For Sale
4 Great Deals out of 10,269 listings starting at $46,285
2016 Chevrolet Corvette For Sale
7 Great Deals out of 1,381 listings starting at $44,165
2015 Chevrolet Corvette For Sale
9 Great Deals out of 683 listings starting at $39,999
2014 Chevrolet Corvette For Sale
4 Great Deals out of 822 listings starting at $38,995
2013 Chevrolet Corvette For Sale
13 Great Deals out of 363 listings starting at $25,437

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.