exhaust vapor - The 1947 - Present Chevrolet & GMC Truck Message Board Network

71chevylongbed · 01-04-2004, 11:07 PM

on a dual exhaust is it normal for one pipe to have alot of vapor and the other pipe to have hardly any?

shuttermutt · 01-04-2004, 11:31 PM

Vapor? As in condensation? I know that when I had the duals put on my truck, I would've SWORN that the passenger side dumped more condensation than the driver's side. I watched it for a couple of days and quickly realized that it was just how I was parking. The visible product from the driver's side was being blown under the truck and made the passenger side appear to put out twice as much. Oh, I don't have a crossover (yet), FWIW.

All things being equal, there shouldn't be any appreciable difference on average between the left and the right side of the engine. Crossover pipes, differences in the exhaust, the heat riser (if so equipped), and so forth can make some impact. If it's extreme (as in a huge cloud from one side), you might be looking at a blown head gasket or similar.

71chevylongbed · 01-04-2004, 11:40 PM

should the vapor go away when it is warmed up because it still puts out a little when it is warm.

shuttermutt · 01-04-2004, 11:47 PM

Quote:

Originally posted by 71chevylongbed
should the vapor go away when it is warmed up because it still puts out a little when it is warm.

Depends on the outside temperature. If it's pretty cold out (usually below freezing), you'll see vapor all the time, but it will get less as the engine comes to operating temperature.

For example, in 15-degree weather I'll see a pretty good cloud of pure white vapor from my duals which will gradually lessen until all I see is a tiny little bit as the engine completely warms up.

ROAD DOG · 01-05-2004, 12:00 AM

I get alot of vapor on start up. Mostly from the drivers side for some reason. Maybe even a little oil burnt , but once up to operating temp the truck don't smoke at all. Got me puzzeled too.

*rage'nrat638* · 01-05-2004, 12:08 AM

vapor

ROAD DOG · 01-05-2004, 12:23 AM

That be the stuff Rage'nRat

SWEET7T · 01-05-2004, 01:41 AM

During the summer I don't get any vapor (understandable).
The colder it gets, the more my truck blows.
WHen it is really cold, like below freezing, it will lessen as it warms up, but there will always be a little bit; usually when ideling.

THis is normal for the truck to do. Don't worry about it unless you have some huge cloud of white coming out of one side and not the other

71chevylongbed · 01-05-2004, 01:56 AM

i think it is ok

cdowns · 01-05-2004, 10:49 AM

i know in a lot of areas they put an additive in the gas for the winter time and they say the gas is oxygenated for federal emmissions standards and that causes alot of extra vapor

01-04-2004, 11:07 PM	#1
71chevylongbed Got Horsepower? Join Date: Sep 2003 Location: IDAHO Posts: 406	exhaust vapor on a dual exhaust is it normal for one pipe to have alot of vapor and the other pipe to have hardly any? __________________ 2001 Dodge 2500 Cummins, 4 inch lift, 35" Toyo MT's on Ultra wheels, P-Pump Conversion, AFE intake, Fass, 5 inch exhaust, Pyro,Boost,and Fuel pressure guages, and a whole bunch of other stuff "The Money Pit" SOLD-71 Chevy C10 long bed- 2/4 drop-- 350,th400, Edelbrock performer RPM intake,Edelbrock 600 CFM carb,Crower 240 cam,port and polish,Dynomax headers,HEI ignition,dual 2.5 inch exhaust with Flowmaster 50 series mufflers

01-04-2004, 11:31 PM	#2
shuttermutt Don't say "Oops!", Doctor Join Date: Nov 2003 Location: Houston, TX Posts: 677	Vapor? As in condensation? I know that when I had the duals put on my truck, I would've SWORN that the passenger side dumped more condensation than the driver's side. I watched it for a couple of days and quickly realized that it was just how I was parking. The visible product from the driver's side was being blown under the truck and made the passenger side appear to put out twice as much. Oh, I don't have a crossover (yet), FWIW. All things being equal, there shouldn't be any appreciable difference on average between the left and the right side of the engine. Crossover pipes, differences in the exhaust, the heat riser (if so equipped), and so forth can make some impact. If it's extreme (as in a huge cloud from one side), you might be looking at a blown head gasket or similar. __________________ 'Mutt 1968 CST LWB: R.I.P. 1967 Chevelle: TPI 454 beast 1967 C10 SWB: Claimed when Bumpster didn't put it on his list

01-04-2004, 11:40 PM	#3
71chevylongbed Got Horsepower? Join Date: Sep 2003 Location: IDAHO Posts: 406	should the vapor go away when it is warmed up because it still puts out a little when it is warm. __________________ 2001 Dodge 2500 Cummins, 4 inch lift, 35" Toyo MT's on Ultra wheels, P-Pump Conversion, AFE intake, Fass, 5 inch exhaust, Pyro,Boost,and Fuel pressure guages, and a whole bunch of other stuff "The Money Pit" SOLD-71 Chevy C10 long bed- 2/4 drop-- 350,th400, Edelbrock performer RPM intake,Edelbrock 600 CFM carb,Crower 240 cam,port and polish,Dynomax headers,HEI ignition,dual 2.5 inch exhaust with Flowmaster 50 series mufflers

01-05-2004, 12:00 AM	#5
ROAD DOG Top of the foodchain Join Date: Oct 2003 Location: 3.5 miles from Mile Hi Stadium Posts: 127	I get alot of vapor on start up. Mostly from the drivers side for some reason. Maybe even a little oil burnt , but once up to operating temp the truck don't smoke at all. Got me puzzeled too. __________________ 1970 K-10 4x4 1975 Jeep CJ-5 4x4 1990 Jeep XJ 4x4 Smell the Magic!

01-05-2004, 12:23 AM	#7
ROAD DOG Top of the foodchain Join Date: Oct 2003 Location: 3.5 miles from Mile Hi Stadium Posts: 127	That be the stuff Rage'nRat __________________ 1970 K-10 4x4 1975 Jeep CJ-5 4x4 1990 Jeep XJ 4x4 Smell the Magic!

01-05-2004, 12:08 AM	#6
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	vapor

01-05-2004, 01:41 AM	#8
SWEET7T Try spinnin 4 rear tars Join Date: Sep 2003 Location: Salt Lake City, Utah Posts: 757	During the summer I don't get any vapor (understandable). The colder it gets, the more my truck blows. WHen it is really cold, like below freezing, it will lessen as it warms up, but there will always be a little bit; usually when ideling. THis is normal for the truck to do. Don't worry about it unless you have some huge cloud of white coming out of one side and not the other __________________ SWEET7T 1970 C10, 2wd, LB, 307/TH350/3.08. PS, PB

01-05-2004, 01:56 AM	#9
71chevylongbed Got Horsepower? Join Date: Sep 2003 Location: IDAHO Posts: 406	i think it is ok __________________ 2001 Dodge 2500 Cummins, 4 inch lift, 35" Toyo MT's on Ultra wheels, P-Pump Conversion, AFE intake, Fass, 5 inch exhaust, Pyro,Boost,and Fuel pressure guages, and a whole bunch of other stuff "The Money Pit" SOLD-71 Chevy C10 long bed- 2/4 drop-- 350,th400, Edelbrock performer RPM intake,Edelbrock 600 CFM carb,Crower 240 cam,port and polish,Dynomax headers,HEI ignition,dual 2.5 inch exhaust with Flowmaster 50 series mufflers

01-05-2004, 10:49 AM	#10
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	i know in a lot of areas they put an additive in the gas for the winter time and they say the gas is oxygenated for federal emmissions standards and that causes alot of extra vapor __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

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