start up, blue smoke
04-05-2007, 04:45 PM
#1
2nd Gear Member
Thread Starter
Join Date: Feb 2006
Location: Canada, Sask
Posts: 462
start up, blue smoke
I recently noticed that my car puffs a little blue on startup now, it is about -6Celcuis. I only noticed this after I installed the headers, removed the cats, and installed the cold air induction and 87 octane tune. I ran out and it smelt heavy of gas. Now, could this mean that the car is running a little rich? I can tell when its idleing that there is some unburnt gas fumes, but I just assumed that this is from not having the cats? Car doesn't smoke at all under any load, so I'm not all too worried about it, still feels just as powerful as before, I am just wondering if this is an indication of my car running rich?
04-05-2007, 04:56 PM
#2
5th Gear Member
Join Date: Nov 2006
Location: Southern Cali
Posts: 2,789
RE: start up, blue smoke
Mine Puffs to on start up. You have to remember the car will run in open loop upon start up (stupid mode running of preset calibrations). It's also gonna run richer to heat up the cats and cut down on emissions faster (if there were cats). Its pretty normal to see with no cats.Mine will even puff at wide open throttle.
04-05-2007, 05:41 PM
#4
2nd Gear Member
Thread Starter
Join Date: Feb 2006
Location: Canada, Sask
Posts: 462
RE: start up, blue smoke
I know blue smoke is burnt oil, but can't it sometimes be gas as well. I didn't smell any kinda oil at all when I started it up, just gas. My exhaust tips are pretty black as well on the inside. Hopin to get it dyno tuned here soon. Car currently has 28000kms.
04-05-2007, 10:34 PM
#7
3rd Gear Member
Join Date: Jul 2006
Location: Garden State Parkway Exit 100
Posts: 503
RE: start up, blue smoke
If there's orange smoke - you ate too many buffalo wings... blue smoke is normal after you install any kind of parts that are aft of the engine.. they usually have a thin coating which burns off after a lil while
04-06-2007, 04:13 PM
#8
2nd Gear Member
Join Date: Jul 2005
Location:
Posts: 163
RE: start up, blue smoke
The blue smoke is from the engine burning oil....but doesn't mean you have a problem. The pcv hose on the drivers side is probably sucking some oil and oil vapors into the intake. If you pull off the throttle body you may see some oil laying in the intake. You can install an inline oil seperatorin the hose running from the drivers side valve cover to the intake manifold. You will be surprised at how much oil goes into the intake. More common with f/i vehicles, but even a cai can worsen it because of theincreased airflow....
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