siberianhusky911

Another question i just had a jasper engine put in because my car was burning oil bad and white smoke came out of the mufflers everytime i started it and stepped on the gas. well i just got it back and smoke still comes out when you start it. my main cat is hollow but i dont think its from that. any suggestions

Mr Mojo

white smoke usually means water vapor. I wouldn't worry, we all get white smoke. Blue smoke is the one to worry about.

vader86

is the white smoke comin out later on during the day or when the car is warm??

if its just startup dont worry about it

siberianhusky911

Its comes out all the time cold warm doesnt matter. I mean its not a little amount. Its a plum of smoke but i only had it bad for like a day so.

C4-Wolf

Are you sure it is smoke? Could it be steam? Maybe you have a bad head gasket which is letting coolant into a cylinder. Just a thought.

MrJay

I would take it back something is wrong.

Did you change the hole engine or just the short block? Because if you just did the short block then it could be in the head, a bad valve guids.

Jay

siberianhusky911

It has to be smoke it very dense. I just had a new engine put in doesnt it come with a head gasket?

2HIP4U

Years ago, I had a Mercedes-Benz with an automatic
transmission. At some point it started blowing white
smoke which was diagnosed as transmission fluid getting
into the cylinder which provided the vacuum which actuated
the transmission. Apparently, the valve or separator which
kept vacuum and fluid apart had worn out.

:confused:

Justin1984

hmmm I'd say it was a blown headgasket from the description. Motor oil is typically bluish, black smoke indicates a rich mixture, and white smoke/steam is usually water in the combustion chamber. Does the smoke smell unusual?

PeteL

You need to take that car back, you seem to have issues with that engine.

If it's been buring AF, I would ask for a new engine and get a warranty on the cat(s) and the O2 sensor.

I would not drive it.

Pete

Vic'89

Was the whole engine swapped out including heads and short block ?

White smoke after the car has warmed up is usually coolant leaking into the combustion chamber. This can happen if the head gasket is blown.

Coolant goes through the block and the heads. The head gasket seals the block and heads.

Vic

CFI-EFI

Water is getting into the combustion chamber(s), one way or another. Since it was doing it before the engine change, and now after, it would seem as though is has to do with a pre-existing problem. There are only so many ways water can get in there. 1) Leaking head gasket. If the engine was a long block this is very unlikely. 2) Cracked block. Also unlikely. 3) Cracked head. See no. 1. 4) Bad intake manifold gasket. Still unlikely, because this should be fresh, but more likely the the previous. 5) Cracked intake manifold. My best bet. You didn't mention the year or engine type, but these are the only ways that come to mind. If it is a later model, possibly there are others that don't pop into mind right away. Anybody else? I am sure that your installer will work with you. If it is the manifold, he could not have been expected to know about it or even check for it. I have only had one Jasper warrantee situation and they took very good care of it. I hope the "white smoke" problem wasn't the only reason you changed engines. If it was, maybe the diagnosis and the installer DO share some responsibility.

PS. The 700R4, 4L60, and 4L60E do not use a vacuum modulator, so there is no way for it to be burning trans fluid.


[Modified by CFI-EFI, 4:49 PM 3/14/2002]

siberianhusky911

The car is an 86 z-5. yhe reason it was changed was beacause it was burning oil badly. it was a long that was installed.