Thread: Blue smoke....

Went for a drive this arvo, no smoke once out of low range. Changed oil anyway and been for a 2 hour drive (to get a pie...) no problems. Cheers for the help guys, think it must have sucked a bit of oil somewhere or just working a bit hard in low range engine braking, first time it's done that though.

Originally Posted by 223nut

Went for a drive this arvo, no smoke once out of low range. Changed oil anyway and been for a 2 hour drive (to get a pie...) no problems. Cheers for the help guys, think it must have sucked a bit of oil somewhere or just working a bit hard in low range engine braking, first time it's done that though.

It is quite normal when engine braking for long periods.
Piston rings are forced out against the bore to seal by firing pressure of the power stroke, so no power no rings being forced out against the bore to seal and scrape the bore clean hence when you put some load on the engine you get blue smoke for a breif interval till the oil that has worked its way up past the rings is burnt off.