Smoke coming from exhaust on startup

One reason for white smoke is very common and completely harmless. Inspect the cylinder heads, seals and pistons for wear. These faults can be caused by an engine overheating and can result in a blown head gasket.

If you observe blue smoke appearing in your car all the time, PCV (Positive Crankcase Ventilation ) Valve will be the first thing you should check. But if you get white smoke from exhaust at startup , it might be from these reasons: A cracked or warped cylinder head. What Your Exhaust Smoke Is Trying To Tell You. White smoke from the exhaust on startup When the white smoke comes out of your exhaust can help us to know what is causing the problem. If white smoke comes out when the ignition is started there are a few reasons.

The first one is an internal problem which we will discuss further below. When I start my car for the first time every day, I have white smoke come out my exhaust usually for about a minute or two but it runs fine after that. What would cause backfire and exhaust smoke? What causes white smoke from diesel exhaust?

Why do some engines give out too much exhaust smoke? As the engine warms up after a few minutes, this white smoke will not be reduced because condensation is dissipated. You may commonly see white smoke coming from the exhaust on cooler days upon starting. This is nothing but steam caused due to condensation.

Some white exhaust smoke is normal, especially when you first start the car. Condensation can turn to vapor, providing what looks like white exhaust. But excessive white smoke likely means coolant is leaking into the engine combustion chambers. It could also be that oil consumption is continuing even if you don’t notice it. As a car owner you expect something to come from the tailpipe.

But if it never happened before and now suddenly you see it then maybe. If it is not close the fuel will continue to mix with the recirculated exhaust gas. Check coolant level for. Black smoke from exhaust when accelerating.

By having less oxygen, the diesel does not burn completely and that’s cause of smoke from exhaust on startup. It may also be that we have an air intake in the intake manifold or the flowmeter in poor condition. Then after about seconds to a minute, the white smoke should clear up. If this is the case then you have nothing to worry about. White smoke out of the tail pipe at initial start up is typically caused by radiator fluid that has found its way into the engine oil.

As a diesel truck owner, you understand how black smoke is caused by soot or carbon not burnt in the combustion chamber. In very cold temperatures, the heated exhaust can freeze into minute fuel droplets when exiting the exhaust and produce a more prolonged emission of white smoke for a very short period of driving time. This creates a blue colored smoke which is passed down the exhaust system and then exits the car along with normal gases. A blue smoke condition is typically present when the engine is under load and at first start up after sitting for a few hours.

However, as with the other colours discussed. If just at start up this could indicate moisture in the exhaust , this can happen when the engine is turned off and moisture forms in the exhaust through condensation from the air. L with 120miles on it. I have never had one issue with it, not warning lights or anything.

Maintenance has been up to date. After that, the exhaust is fine.