dark puffs of smoke on hard acceleration..

westranchJune 22, 2006

My every day driver is a 1989 Mercury Grand Marquis LS. It has 87k miles, and burns no oil between 3k oil change intervals. However, lately, I've noticed a puff of dark smoke coming out of the exhaust, only on HARD accelerations. I have not been doing any interstate driving because I've been trying to conserve gasoline lately. My speeds hardly reach 60 mph. The car idles fine and does not miss. Does it sound like I just need to open it up a few times on the interstate, to burn off the carbon? I've heard about doing that every now and then. But, that was when everyone was running on leaded gas.

Thank you for reporting this comment. Undo
westranch

Well, I think I may have discovered at least half the problem. Yes, the car needs to be "blown out" on the interstate. But, I think the catalytic converter is dead.

    Bookmark   June 26, 2006 at 12:13PM
Sign Up to comment
More Discussions
Car
Need AWD Dodge Magnum RT
1stjfpintor
Car suddenly accelerats
This morning my wife was driving our 2013 Chrysler...
Dana015
dump my buick rendezvous?
Do you know the Buick Rendezvous? Mine has been outstanding...
handywidow
Blown tire on a dying car........
Well, in my other post I talked about how my transmission...
catherinet
want to purchase new Car
Hi guys .i want to purchase new car but I am confused..need...
Bill Payday
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™