Smoke from exhaust pipe

Asked by Mar 04, 2017 at 09:44 AM about the 2008 Pontiac Grand Prix Base

Question type: Maintenance & Repair

Just bought a 2008 pontiac grand prix v6 247k
miles it drives really great due to the miles havent
had any major problems ... Just concerned about
the smoke that comes out my tail pipe .. When in
park for a while u can smell the exhaust and see
"blue smoke" .. It stops when i drive tho .. Was
running hot yesterday so i put coolant in it .. Drove
it this morning about a mile or so .. Didnt get hot
but the exhaust smell is there and smoke out the
pipe ... Check engine light goes on for a while then
off .. Hope its something i can fix myself short on
cash ...

1 Answer

25,805

That is not the best car to have at those miles... the engines have an issue with head gaskets. That said, blue smoke tends to indicate burning oil, either piston rings or valve guide seals. (You don't have a turbo I presume, another source for blue smoke.) Running hot and dumping white smoke tends to indicate a head gasket issue. A few tests can give you some idea: A leakdown test (can check if rings and seals are good), a compression test (can check if head gasket is good), Block Tester (can check for presence of hydrocarbons, from combustion gases, are in the coolant, another sign of a bad head gasket). At your mileage you most likely have a little bit of everything going on, so keep your eye on the engine oil and don't let it get low, give it a tune up and clean or replace filters, a plugged PVC filter can cause too much pressure to build in the crankcase and might be one of the reasons for oil blowby reaching the exhaust.

Your Answer

Pontiac Grand Prix Experts

  • #1
    Js08016
    Reputation
    4,370
  • #2
    Tom Demyan
    Reputation
    2,980
  • #3
    munron
    Reputation
    2,350
View All

Related Models For Sale

Used Chevrolet Impala
61 Great Deals out of 932 listings starting at $1,900
Used Pontiac G8
16 listings starting at $6,495
Used Dodge Charger
82 Great Deals out of 827 listings starting at $2,000
Used Chevrolet Monte Carlo
13 listings starting at $8,900
Used Ford Mustang
7 Great Deals out of 1,191 listings starting at $3,350
Used Pontiac G6
10 Great Deals out of 159 listings starting at $1,900
Used Chevrolet Malibu
117 Great Deals out of 2,274 listings starting at $2,500
Used Chrysler 300
96 Great Deals out of 1,042 listings starting at $1,995
Used Dodge Challenger
10 Great Deals out of 901 listings starting at $11,998
Used Honda Accord
73 Great Deals out of 1,119 listings starting at $748

Used Cars For Sale

2008 Pontiac Grand Prix Base For Sale
23 listings starting at $2,200
2007 Pontiac Grand Prix Base For Sale
3 Great Deals out of 7 listings starting at $1,800

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.