Hi, know this is the wrong forum and site all together to be asking this but I need help. My 1987 toyota pickup (daily driver) is suddenly giving me ****. I started it the other day and it started smoking (white) it only does it for a second or two and then goes away until I restart the truck. Then yesterday I was at my friends house and I started it and it smoked a combination of white and black smoke. I'm sixteen and don't know wut to do. I need to get my truck smogged this tomorrow so please if anyone knows its greatly apprecitaed is an 87 toyota pick-up 4cylinder and carbeurated

 

I think your piston rings are shot. When the engine is cold the piston rings will shrink and have small gaps which will allow a small amount of oil to burn. That is the cause of the white smoke. Once the engine warms up the rings expand and create a seal again. I don't know if you are going to be able to pass inspection but just make sure its well warmed up when you take it.

 

Good luck smogging that engine, that could be extremely difficult, FYI.

 

Despite all the negative things going through my head lately I went and got my truck smogged.... It seems to have almost completely stopped smoking and ran erally good for the smog station. It passed running very cleanly the guy said. I think my carb needs adjusted because its running rich but it passed! Thanks guys

 

Maybe you should use a motor oil of a higher viscosity if you have bad piston rings, that'll help prevent blowback.

Did you run any compression tests?

 

yea when I adjusted my valves I did a compression test they were all at 180 psi except one cylinder was at 160 or 170. I think part of the problem is flooding the cylinders when it starts because its carbeuratedbut I'll consider that when I change my oil next time thanks.