What would cause white smoke to come out of my exhaust

White smoke is an indication of a blown head gasket or cracked head. Here is a guide to confirm the problem.

https://www.2carpros.com/articles/head-gasket-blown-test


Please let us know what you find.

Cheers

Let the engine run for a while. It could be residual oil in the exhaust system and it might take a few days of running to get them cleared. In the meanwhile monitor the engine to see if you have coolant losses or overheating issues

You mentioned replacing the engine, why did you have to remmove the head?

I had to remove the head because i blew a hole threw my engine block. The connecting rod cracked off. A new thing i discovered is I took all of the spark plugs out and cranked the motor to see if any coolant would squirt out and nothing but i did notice that three off my spark plugs are covered with engine oil. Does this mean i have bad piston rings, o-rings, or a bad valve seal.

I know you replaced the engine but why was the head from the new engine removed? Did'nt the engine come as a complete assy? Do you mean you only replace the short block?

Spark plugs covered with engine oil can be due to 2 things, bad plug seals under the valve cover or O'ring under the cam carriers.

yes i did mean that i replaced the short block and as far as the spark plugs you don't think it could be worn piston rings

No, it is a problem at the head and is not the cause of the excessicve smoke. Have you been running the engine and is the smoke still there?

i only ran the engine for about 30 minutes and shut it off cause it wouldn't stop smoking, was afraid that leaving it on would cause damage. should i run it for a while

Yes, let it run for a while longer to see if the smoke decreases. Ensure you ahve sufficient engine oil.

Were the valve seals replaced?

no i didn't replace the valve seals

ok i replaced the valve seals, valve cover gasket, but i need to replace the o rings that go underneath the cam carriers but cant seem to find them at any auto store. Would anyone happen to know what size they are so i can just buy some universal ones?

You can get 3 out of the 4 but the 3rd cylinder is a special one with an additional loop for the oil pressure hole. Remove the O-ring and got to the seal shop. They can measure the size for you.

Did you try the dealer?

okay so i got the o rings installed now new problem i cracked the camshaft carrier and in doing so found that one of the rods in the rocker arm assembly is bent. I am replacing the whole assembly but one question I do have is what sequence do i tighten the bolts in since when i did it the first time it cracked my camshaft carrier.

If a camshaft carrier is bad, you would need to replace the cylinder head assy as cam carriers are cylinder head specific.

If you do not replace the cylinder head, you would have to test the bearing clearance for the camshaft journals. Install the camshaft carrier without the rocker arms first and tighten to specification. Manually turn the camshaft to test if it turns easily. It MUST.

Tightening sequence is not the main cause of you breaking the cam carrier. You did not tighten them evenly. You should be tightening them a few turns for each screw and ensure the carriers are seated correctly.

I cant just get a whole new rocker arm assembly and put it on

The cam carrier bearing caps might not match and this would result in the camshaft seing up sooner or later.

If you must, reuse whatever camcarrier bearings caps possible and for the new ones you are putting in, perform the test as I outlined. If it is tight, remove the locking guide for the cap and after holding all other carriers, tighten this one last and see if it improves.

okay i replaced the whole entire rocker arm assembly and it fit perfect and i also replaced the valve seals, but when i go to start it it will start when i give it gas but once i let off it dies is this a problem with timing and also too I am still getting blue smoke coming out from my exhaust how long should I let it run for to see if it gets any better

The blue smoke might be there for a few days depending on the running time. At least 1/2 and hour to see any difference.

Not the timing. Maybe the idling speed is too low. Did you adjust the valve clearances according to specs?

dam i knew i forgot something all adjust the valves and post any differences

ok i adjusted the valve clearances and the car started nice and fine still smoking but i did notice that oil is leaking around the cylinder head I'm thinking the gasket I got isn't doing its job which is probably causing oil to go into the cylinders what do you guys think

Where is the oil leaking from, front or rear?

The cylinder head gasket cannot be the cause of that, unless you have something trapped between the gasket layers. Oil cannot go into the cylinders via the gasket because this means you have no compression due to leakas and the engine is not going to run smoothly.

Reconfirm the leak. It should be external, most likely valve cover gasket, distributor or V-tec solenoid valve assy (if equipped) if from end of engine. Front of engine leakage means the camshaft seals.

it is leaking from the front of the engine where the engine block seals up with the cylinder head, and I can't seem to find where my cars camshaft seals are i have a d16z6 head

Seal is behind the cam pulley. When you removed the camcarriers you did not check or replace it? You need to have a little sealant between the carrier and cylinder head.

ok so what do you mean put a little sealant between the carrier and cylinder head, and visual picture would be much appreciated and also too i remember something about replacing cam carrier o-rings where do those go pictures would be appreciated here as well if able to supply them.

# 1 camshaft holder at timing belt side has an oil seal under it. Sealant has to be applied under it when installing to prevent oil leaks. You need to apply sealant to the # 5 holder as well.

If your engine is V-tec, it would not have the o-ring. The plug seal would be inside the valve cover and if the seals are hardened, you would need to replace them.

ok i applied sealant now the only other place where it is leaking from is right at the front left corner between the engine block and the cylinder head it starts from there and stops halfway between the headers

You need to find the exact source of the leak to be able to rectify it.

I don't know where you are refering to so how about a pix?

here is a diagram location of where it is leaking

Check the distributor O'ring and the # 5 cam holder. You need sealant between the cam holder and head. The leak would look as if it is from between the heads as oil woul flow down from above and accumulate at the head.

My car ( KIA Carens is having the same issue. Pls what is the solution sir.

It looks like the head was not surfaced which will cause the leak due to warpage. Anytime the head gasket is replaced the head MUST be resurfaced.

Hope this helps,

Please let us know what happens.

Cheers, Ken

Inspect the intake gasket to find out where is the problem comes from. I think it may be the fuel pumping injection timing has stopped working causes the thick white smoke.

https://www.2carpros.com/articles/white-smoke-or-steam-coming-from-the-exhaust-pipe