Can someone tell me why my 2000 Pontiac firebird formula smokes dark grey


Asked by Mar 12, 2013 at 11:58 PM about the 2000 Pontiac Firebird Formula

Question type: Maintenance & Repair

9 Answers


The rings are worn and it's burning oil. If it smokes at start up, it's worn valve guides.

1 out of 1 people think this is helpful.

Tenspeed, is it grey smoke because that's motor in that? or mostly carbon?

How many miles Pancho? Black smoke~~unburned hydrocarbons, gasoline......white./blue tint smoke~~ motor oil. "Dark grey.".....I would lean to oil, and TS's answer. Bob, does that answer you?

1 out of 1 people think this is helpful.

i am leaning torwards it burning oil. but david is right, motor oil burning has a dark blue tint to it.

1 out of 1 people think this is helpful.

It has 171000 miles

1 out of 1 people think this is helpful.

That's enough miles to have a pretty fair amount of wear on the piston rings, if all are worn it will smoke like that, on even have broken ring(s). Do a compression check if you can. That will identify if a single or multiple cylinders are losing compression, or even if any. And keep in mind what tenspeed said, valve guides...when oil seeps past the guide seals in to combustion chamber while sitting, and big puffs of smoke upon start.

Samuel Moore

Probably burning oil. The PCV system on the LS1 powered F-Bodies is bad about putting oil in the engine. A lot of people install a catch can.

Don't think that a motor runnin' synthetic since the beginning would hardly feel broken in at 170,000-


Forgot to say that it overheats

Your Answer

Add photo

Related Questions


Looking for a Used Firebird in your area?

CarGurus has 904 nationwide Firebird listings starting at $2,900.


Search Pontiac Firebird Questions

Pontiac Firebird Experts

#1 Samuel Moore
Samuel Moore
Reputation 910
#2 dandyoun
Reputation 750
#3 Justin Hatfield
Justin Hatfield
Reputation 730
View All

Related Models For Sale

Used Chevrolet Camaro"
797 Great Deals out of 38,852 listings starting at $2,650
Used Ford Mustang"
731 Great Deals out of 41,065 listings starting at $900
Used Chevrolet Corvette"
435 Great Deals out of 20,234 listings starting at $3,688
Used Ford Mustang SVT Cobra"
7 Great Deals out of 327 listings starting at $5,999
Used Chevrolet Monte Carlo"
12 Great Deals out of 2,062 listings starting at $2,000
Used Chevrolet Silverado 1500"
2,445 Great Deals out of 144,778 listings starting at $1,995
Used Pontiac Grand Prix"
30 Great Deals out of 4,356 listings starting at $1,995
Used Chevrolet Impala"
932 Great Deals out of 35,698 listings starting at $1,500
Used Ford F-150"
3,268 Great Deals out of 216,650 listings starting at $1,500
Used Jeep Wrangler"
463 Great Deals out of 16,414 listings starting at $3,400