Fennix_sr

i was just wondering if the reason my car is puttin blue smoke is from putting totaly free flowing exhaust, after puttin on headers and straight through pipe my car seems to puff blue, it has been sittin in one spot for a while now tho i have to get my new clutch in... but if anyone can give me some insight could it be a number of different things other than dieing

Keaponlaffen

only thing I can think of is maybe the car has always puffed a bit of blue smoke, but the full exhaust system that was on it before slowed the exhaust down enough, and dispersed it enough to make it less noticeable?

AdrenalifeRX7

Well mine does that a tiny bit too, and I have a custom 3 inch stainless exhaust and a turbo.

Rotary Revolution

Rotaries have a very poor ability of burning all gas put in. The blue smoke you see, is pretty much raw fuel not being burnt. Mine has done that for a long time, abd its not burning oil.

Thses are also very bad on milage.

Thomas Stifter

faye x7

......you are burning oil. Sometimes it's just normal, sometimes it's not. Such as, if it happens ALL the time. My car burns oil on start up cause the seals are cold and take some time to warm up to start working properly. Now if you're getting blue smoke after start and while you drive, than it's a different story.

During the warmer part of the year my car never burns oil.

Fennix_sr

well where i live its prety cold out, what about the OMP being stuck open how do i check that out ?

SilverRocket

Wrong! *Blue* smoke is oil, definitely not fuel!

Fennix,

A little oil smoke *on startup* is pretty normal for a car with some miles on it. If it's not excessive and goes away after a minute, it's not a cause for concern. However, if your car is puffing significant amounts of smoke between shifts, after letting off the gas from high rpm's, etc, your engine's oil control seals are on the way out, and the only cure is a rebuild. However, if it isn't too bad to start with, it can often take quite a while to develop into a real James Bond smoke screen.

SilverRocket

It's really easy to check. The OMP is on the bottom front of the engine, on the passenger's side of the car. You'll notice there is a rod leading from the carburator throttle linkage down to the OMP - this is how the oil injection works.

To see if it's seized, all you have to do is reach your hand down there, and see if the OMP moves up and down easily (ie. the rod is able to move it properly). If it does, you're good. If it's stuck, you're not lol.

Also, you can pull the oil lines at the carb, put them into a measuring container, and see how much oil gets into the container after a few mins. There is a set specification, it's in the Haynes manual. That way you can check exactly how much oil is getting to the engine. Take note though, you should meter some oil in manually while you've pulled the lines and are running the engine to check. (Also note that you should warm the engine up before the test - the OMP usually takes a few mins to start working, so don't be alarmed if there's no oil coming out at first when the engine's cold.)