Scotty, I have a 1999 Toyota 4Runner, 180K mikes, automatic transmission with a 3RZ engine.
Just today, I noticed the car taking a little longer than usual to fire up and roughly shaking on idle. It usually does this when I turn the car on/off with short periods in between. But, today I noticed white smoke. Could this be related? I also found no trouble codes.
Video of white smoke: https://drive.google.com/file/d/1TamlBD4KsDHOmksbd3I0raEnFY0wcO5c/view?usp=drivesdk
You definitely have a blown head gasket. Sorry. Pull your spark plugs, some of them will be wet with antifreeze.
I’ve been looking a little more into this, do you think it could be bad fuel injectors or a bad PCV valve?
check from easy to difficult, fuel injectors are easy to pull off, but the head gasket is not gotta be that easy. Scotty has a video about checking whether your coolant has been into the head gasket or not, watch that video and test the coolant.
Block tested it, Blown head gasket 🙁
are there any other more symptoms?
do these symptoms go away when the car got warmed up?
tell us everything!
The rumbling occurs for less than 30 seconds upon warm up, but it is really rough, you feel the car moving side-to-side. Eventually goes away after a bit then does not occur while driving. I haven’t driven my car because of this new white smoke (scared it could be a blown head gasket)
I also noticed rodent droppings today on the floor of the passenger side, it is weird because the car is my daily driver and never stays sitting for long.
Also, the RPMs jump low/high when in idle at start
do you see anything wrong with your coolant? did the liquid go bad or it is on low level? can you test it?
if that's true, that could mean the coolant does go to the combustion chamber, which could mean the head gasket may be damaged
I’ve also checked oil and radiator coolant, they seem to be clean and properly filled. However, since I haven’t drove the car, maybe I haven’t given it the chance to mix if the head gasket is the case
I had a previa minivan that would blow white smoke and run rough For a few minutes until the engine warmed up. Then the smoke would stop and The engine would smooth out. I figured the metal was expanding and sealing the leak As the temperature rose. I used Barr’s headgasket sealer in it. Closely Followed the directions on the bottle, and it never acted up again on me.
my guess you may check the timing belt or timing chain to see if they are broken or deformed
they are easiest to check
otherwise there could be sealing problems about pistons and/or cylinders