Engine Smoke| Off-Topic Discussion forum |

Wayslow Reader
3/4/12 5:26 p.m.

My Wife has a 2005 Grand Caravan with a 3.3l engine and about 80k miles. We were out today and heading up a steep hill. The van held a lower gear and the engine was turning nearly 4000rpm. I glanced in the rearview and we were putting out a pretty good smoke screen. It was grayish in colour. I lifted and the smoke stopped right away. I wasn't able to repeat the problem and the engine isn't making any noises. There are no fault codes. The van has started using a little oil between changes but it passed it's last emmisions test with no issues.

I'm concerned but I'm not sure how concerned I should be.

02Pilot Reader
3/4/12 6:16 p.m.

Could you tell if it was black smoke (fuel) or blue smoke (oil)? Either one is possible, but the causes are are obviously going to be different.

Streetwiseguy SuperDork
3/4/12 6:47 p.m.

Is that the first time its seen that kind of engine load for a while? Could just be shaking stuff out of the engine and exhaust- grey is the color of liberated carbon deposits.