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 RWD

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

60,725

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.
109,805

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?

60,725

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

Your Answer

Corvette

Looking for a Used Corvette in your area?

CarGurus has 16,113 nationwide Corvette listings starting at $3,995.

ZIP:

Chevrolet Corvette Experts

  • #1
    John Carson
    Reputation
    2,620
  • #2
    Vincent Parker
    Reputation
    1,890
  • #3
    carGrrl
    Reputation
    1,470
View All

Related Models For Sale

Used Chevrolet Camaro
385 Great Deals out of 31,360 listings starting at $3,495
Used Ford Mustang
337 Great Deals out of 42,082 listings starting at $1,488
Used Porsche 911
121 Great Deals out of 5,246 listings starting at $10,099
Used Dodge Viper
217 listings starting at $30,195
Used Chevrolet Silverado 1500
2,725 Great Deals out of 156,619 listings starting at $1,000
Used Ford F-150
3,016 Great Deals out of 229,522 listings starting at $1,300
Used BMW M3
33 Great Deals out of 1,852 listings starting at $5,495
Used BMW 3 Series
1,140 Great Deals out of 33,944 listings starting at $1,209

Used Cars For Sale

2018 Chevrolet Corvette For Sale
3 Great Deals out of 3,027 listings starting at $48,035
2017 Chevrolet Corvette For Sale
11 Great Deals out of 3,677 listings starting at $41,795
2016 Chevrolet Corvette For Sale
14 Great Deals out of 982 listings starting at $39,997
2015 Chevrolet Corvette For Sale
14 Great Deals out of 722 listings starting at $36,995
2014 Chevrolet Corvette For Sale
3 Great Deals out of 719 listings starting at $33,990

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.