Too much fuel

[ardi4nto]

I have 1UZ-FE from Soarer with stock A/T,wiring & ECU install in Toyota Kijang.....
After I do JetClean about 1 month ago , If I start the engine in morning....i see litle black smoke on muffler tips around 5 minutes ( i think like too much fuel ).And if I check the spark plug its black colour like carbon....
How can I fixed this problem...?
I try to check with Carman Scanner but looks anything wrong....

rgds,
A N T O

 

[Lextreme II]

Black smoke normal indication of perhaps oil. You might want to check the valve seal O-Rings. Do u noticed all spark plugs are black like carbon or just a few?

 

[rdm20fan]

black smoke is usally fuel.

Blueish smoke is usally oil, and it hangs around longer.

White smoke is usally water, and disapates quickly.

 

[Zuffen]

A bit out of left field but I'd suspect the cold start injector isn't shutting down quickly enough.

Probably the cold start temp sensor on the front waterbridge. If it doesn't affect drivability and it goes away when warm I wouldn't start changing parts unless I could borrow them.

 

[Pro]

i didn't know the 1UZ had a cold start injector? but i WOULD point my finger at the cold temp sensor though.

 

[Damien]

Yep - it pokes up in the middle of the plenum.

 

[ardi4nto]

yess all spark plugs a little black like dry carbon but not oil....
I use NGK iridiumIX plugs...