Visible excaust

[Imp]

I changed to NGK Iridium CR8EIX at my 50,000 oild change / throttle body sych. Now I have visible excaust that was not there before. Never had this before and can't think of what is the cause. What could be the culprid?

 

[gumba]

I changed to NGK Iridium CR8EIX at my 50,000 oild change / throttle body sych. Now I have visible excaust that was not there before. Never had this before and can't think of what is the cause. What could be the culprid?

Have you been out for a ride after your work in the garage? You get a machine hot in the garage and all kind of weird **** happens. Take it out and let the engine clean its self.

 

[na1g]

Exhaust colors: white = water vapor, blue = oil, black = fuel.

If all you did was replace the plugs, none of those things should have changed. If you did a TB synch, none of those things should have changed either, but the only one that is remotely possible would be fuel mixture.

As suggested above, take it out for a run and check again.

Does the "visible exhaust" go away when the motor warms-up? Are you sure it's not just cold weather water vapor?

pete

 

[madmike2]

Does the "visible exhaust" go away when the motor warms-up? Are you sure it's not just cold weather water vapor?

That is my first "guess". If it's cold where you live and the bike has been sitting or, if you've started it a couple of times without riding it any distance, there is likely a certain amount of condensation in the exhaust system and that's what you are seeing.

Simply changing the plugs and doing a TB synch should not have changed anything to cause a major event indicated by exhaust. Either let it run for 1/2 hour to completely warm and evaporate that moisture or take it for a short ride (more than around the block).

Not to worry........yet!

 

[Imp]

Thank you for the replies. I have put 100 miles on it since changing the plugs and had the same thing happen when I first starting up day after the ride, it does go away with a prolonged ride. Never done it before and my wifes FJR does not do it ( I too thought about the temp). I did not put the Iridum plugs in her bike so far. The color of the "smoke" is white like a fine fog.

 

[madmike2]

I ride mine daily and in the Winter it does the same thing. I've always attributed it to the fact that I put it away hot, it rests over night and moisture is condensed in the exhause system from the ambient moisture. When I start it next morning I see the "steam" until the engine (and exhaust system) is warmed to operating temperatures.

If your wife's bike sits more than yours, the water vapor is not condensed in the exhaust system.

 

[Imp]

Thank you Madmike. That makes sense. I will ride on without paranoia then :yahoo: .

 

[wfooshee]

Just confirming that a misty white exhaust, as opposed to smoky white, is water vapor. It dissipates rapidly, not leaving a cloud. Any vehicle does it when it's cold out and the motor's cold, or even after it's warmed up. You've probably not been cold enough often enough down there to see it before.

Now the white smoke exhaust . . . that's a Bad Thing. The kind of thing you see when a race car engine blows up and you can't see through the smoke. Have a look at what comes out the pipes at about 1:07:

https://www.youtube.com/watch?v=NO5z9XLz1AM

 

[Imp]

No nothing like that smoke, thank god. It is the smoke that disipates 10 inches from the pipe.

 

[na1g]

Sounds like normal cold temperature water vapor. Start you car and you'll see the same thing. In fact, in cold temps the vapor trail never completely goes away. You can ride along behind a Prius and tell when the gasoline motor kicks on and off by watching the exhaust.

In short, no worries.

pete

 

[RadioHowie]

Just confirming that a misty white exhaust, as opposed to smoky white, is water vapor. It dissipates rapidly, not leaving a cloud. Any vehicle does it when it's cold out and the motor's cold, or even after it's warmed up. You've probably not been cold enough often enough down there to see it before.

Now the white smoke exhaust . . . that's a Bad Thing. The kind of thing you see when a race car engine blows up and you can't see through the smoke. Have a look at what comes out the pipes at about 1:07:

OH **** THAT'S GONNA BE EXPENSIVE TO FIX!!!

 

[FJRBluesman]

Gunny, no worries ride it. Unless you loosened something and didn't tighten it up...

Just confirming that a misty white exhaust, as opposed to smoky white, is water vapor. It dissipates rapidly, not leaving a cloud. Any vehicle does it when it's cold out and the motor's cold, or even after it's warmed up. You've probably not been cold enough often enough down there to see it before.

Now the white smoke exhaust . . . that's a Bad Thing. The kind of thing you see when a race car engine blows up and you can't see through the smoke. Have a look at what comes out the pipes at about 1:07:

OH **** THAT'S GONNA BE EXPENSIVE TO FIX!!!

I wonder if a GenI motor will fit in that?
Did you see the ***** sitting in the trunk? "Yeah, I'll sit back here while on the dyno rev it beyond redline and we'll see what kind of yield we get." What a hoot!

 

[madmike2]

Did you see the ***** sitting in the trunk? "Yeah, I'll sit back here while on the dyno rev it beyond redline and we'll see what kind of yieled we get." What a hoot!

Uhm...Simon, it's a Mustang. YOu have to add weight behind the rear axle to gain traction....and that was quite a bit of weight. Maybe the added traction caused the catastrophic engine failure!?!? :dntknw:

 

[Bustanut joker]

You are going to get killed on it. The smoke is going to poison you to death..

Sell it to somebody in California They have laws against **** like that and it will fix itself.

Then ya just buy it back from the widow.

 

[edjo69]

I have been riding with Iridium plugs for over 10k, the only stuff I get out of the tail pipes is water vapor on cold or damp mornings, carbon blow out when really getting on it and the sweet smell of racing gas 75% of the time.

 

[wfooshee]

I read on the neenernetz from somebody who's s'posed to know (so it's true - gospel!) that they were boosting the 'stang to 24psi. In the stock block.

Personally, I don't think they'd have gotten those revs out of it if they had that much boost; it woulda blown up a lot sooner. But what do I know?

 

[Bustanut joker]

But what do I know?

:blink: Oh man! Where to start? :lol:

 

[FJRBluesman]

Now that I think about it, when I changed over to the Iridium plugs my exhaust smelled like french fries in the morning. Always made me hungry for In & Out food.

 

[cruppelt]

Just in case you have a Power Commander 3 in your machine - you probably unplugged the tank connections when working on your TBS and the new plugs, and just maybe you turned the ignition key once before you realized that they were not both reconnected. If that rings a bell with you that would mean you lost your throttle to rpm setting. Hook up a laptop with the PC3 software on it and resynch the throttle.

I did that with my own machine by accident, and I had clearly visible exhaust from burning too much fuel. Acceleration was noticeably down as well.

Just sayin'....