Hello I have 1987 4runner 22re it was running fine last week haven't drove it in a week. Now went to start it. It started fine then immediately started to run rough very rich sounds like it's running on less than 4 cylinders it has power there is a little gray smoke coming out. I checked the codes and code 6 and 12 pop up one of the codes might be old never clear them before they and check engine came on once but it went away so I never check it.

 

I check oil it was low I put oil in it . I noticed when it was running that some gas was squirting out of cold start I don't know why I tighten it now no leak but still runs bad

 

Is anyone out there

 

I would clear the codes and see if they come up. The leak on the Cold Start Injector, I would replace the crush washers. A small leak at the injector will put out a lot of fuel and is a fire hazard. Black smoke is rich fuel, Blue smoke is oil, white is steam, not sure what gray is.

When was the last complete tune up with quality parts? All lines and hoses connected correctly?

 

Now that you say that I think it's water in tail pipe I think I have a blown head gasket but never got hot it was running fine then parked it for week now it runs bad why would it blow The head gasket and do you think it could be something elss? I cleared the codes nothing has pop up but didn't run it to long don't want do any damage to it

 

Signs of a bad HG are excessive white smoke out the pipe, milky oil and coolant loss.

Is your current engine the original, rebuilt? Has any major work been done to it?

 

I don't have water in the oil or oil in the water and the motor was rebuilt but I don't think he did a good job because it burn oil sense I got it

 

You need to run a compression to test to see if it is a head gasket. Is it excessive smoke/steam? This time of year they tend to blow steam due to the colder weather, depending on where you live.

I would check several things as it could be something a lot easier then a head gasket.

 

Yes smoke and steam need to find someone to docommpess test

 

170 170 190 and 95 compression test I was hoping this wasn't the problem thanks for your help everyone