Welcome to our resource for MG Car Information.
Triumph TR6 - Tailpipe Vapors
|With the onset of chilly mornings, I've noticed the reappearance of the water vapor cloud out the exhaust when warming up. But the cloud comes from the left (front 3 cylinders) Ansa and not the right. DOes this mean the front carbs are a tad too rich, or the rear are lean? The mix on both carbs is set equal. Gotta worry about such trivia ya know.|
|Hi Rick Orthen,|
Geeez sounds critical. I can feel your pain. But since its Thanksgiving up here. And were all in a giving spirit lets try this. Personaly and I think RickC will agree you should have your entire engine removed and Prof. rebuilt using only the finest racing tech. Fit triple set of triple Webers, or better yet a full fuel injection system. Dynoed balanced and tested and then crate and ship to Canada to Rickc. He will of course evaluate and let you know if he feels its up to par. We tend to be very picky ourselves up here so this process will probably take around 10 years at which time RickC will send back your motor for updating and upon return further testing.(:
If your using standard single muffler 2 in 2 out sitting at tilt cross the back? Inner chamber routing and design will cause that. Condensation. Most are cross flowed water flows down.
Let us Know.
|Bill--Yessiree, got to get all the latest rage in racing tech before I can solve this mystery. I thought you'd advise checking the condition of my head gasket too. BTW, my exhaust system is completely separated from the stock 6-into-2 exhaust manifold back. So, the question remains: does rich mean more water vapor (I think it does)?|
I remain, a worried purist.
Water vapor cloud? Just so I know we are talking same thing here. You are getting white? smoke from left exhaust only or front cylinders that goes away or lessens as the car warms up? White smoke is caused by water as in steam. Rich fuel mixture causes dark grey to black lessening as warmed up engine becomes more efficient. At least in my experience. fuel additives may cause something different as well? But white smoke is almost always water and has to come from some place.
If that is the case first do a plug read across the board. Your looking for a plug thats much cleaner than others. Or any marked differences. That should give a starting point to work from.
Yes a head gasket with a flaw to water jacket will seep more at colder temps because metal contracts. Anything is possible. But take it one step at a time.
Let us know
|One other thought if coolant is getting in a piston your smoke should smell sweet. The new cat friendly stuff if thats what you use may not though don't know? For a rich mixture to be more white your fuel should have to be contaminated by water to my way of thinking?|
|Bill--This is a warm-up phenomenon that occurs on brisk & damp mornings only. It disappears completely within a few minutes and I don't suspect any head gasket problem. I figured it was the moisture of combustion condensing in the cool ambient air (at startup, the exhaust system is cold and reduces the exhaust gas temp more, thus enhancing the vapor effect). At higher exhaust temps, the gases are less able to be condensed. It wouldn't cause me to ponder any longer if the vapors came out of both exhaust pipes equally.|
Well since I don't know any more than your first post. And your last was most interesting I hope you figure it out.
This thread was discussed between 12/10/2002 and 15/10/2002
Triumph TR6 index