Bhg or just steam.

[Zrain25]

Recently since it has gotten cooler out side I have seem alot of white steam coming from exhaust. I recently did timing belt. I drained the radiator. Filled it. Filled the reservoir I dont think I filled it all the way to the full mark. I also changed the thermostat so all the coolant from that drained out. Drive it around the block. Parked it 4 day later take it around the block. Bird cage light. Fill the reservoir. Drove it 4 days later. Bird cage. Just filled it last night drove it today brought it to temp checked the coolant and it didn't go down yet. I think it was just the coolant that was lost from the repair but the exhaust has a steam coming from it. Even before I did the repairs. It's not smoke when u put ur fave in it it feels like steam it's damp. It usually clears up when it's warmer out side. (Above 40)

No coolant smell when I turn the heat on. No milky oil on dipstick

 

[stew_7mgte]

Condensation will form water in your exhaust over night but you will burn it off a few minutes after the car is warmed up. If you think you have a bhg do a compression check, you can get the guages for $20 from autozone and do it in half an hour.

 

[radiod]

It can take a while in the cooler weather for all the condensation to burn off and clear out completely. Make sure the cooling system is bled properly and that there are no other external leaks and monitor the level. If you are still losing coolant move on to a compression test (or even better, leak down test) and see what the results are. Keep an eye out for other BHG signs such as hard cold start and/or stumble in idle on cold start, bubbling in the overflow while the engine is warm and running, the dreaded milkshake dipstick, etc. You could also jack up the car when it's been sitting for a while and crack the oil drain plug and see what comes out first (coolant/water will sink to the bottom of the oil pan).

 

[Zrain25]

My car has always been hard to start in cold sense I bought it. And once the engine warms it run perfect.

When I hit the gas when it's cold it rpms drop a little then go up like a stumble kinda. Other wise it runs great. I'm gunna let it get the temp today see if drains more coolant.

Before I drained the radiator and did the thermostat it never asked for more coolant. So I'm thinking its just refilling with coolant

 

[Dan_Gyoba]

Remember also that one of the products of combustion is water vapor. While the exhaust is cold, this can and will form visible condensate in the exhaust stream until such time as the engine and exhaust system heats up to the point where the water vapor remains... Well, vapor. How long this takes will depend on the relative humidity of the air, the outside temperature and the thermal mass of the exhaust system, not to mention the volume of exhaust, and the EGT at the manifold.