Cold weather smoke.
11-19-07, 02:45 PM
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Cold weather smoke.
Why do rotaries smoke so much when the it gets a bit chilly out? My car (85 GSL-SE) makes barely a puff on start-up from April to October, but now I get a pretty good cloud which lasts about 5 minutes or more. It's definitely blueish smoke and not coolant. Are there any particular oil grades or additives which might help? Any ideas?
Another cold weather issue. Until the car warms up it's very hard to shift. It feels like the clutch hydraulics aren't working properly. It seems like pushing the pedal all the way to the floor isn't far enough. I flushed out the fluid last year thinking it might have moisture or something, but it didn't help. It's not really that cold, probably about 40 degrees at night. I've never had a car that was hard shifting unless it got really cold, like down in the teens. Any suggestions?
Another cold weather issue. Until the car warms up it's very hard to shift. It feels like the clutch hydraulics aren't working properly. It seems like pushing the pedal all the way to the floor isn't far enough. I flushed out the fluid last year thinking it might have moisture or something, but it didn't help. It's not really that cold, probably about 40 degrees at night. I've never had a car that was hard shifting unless it got really cold, like down in the teens. Any suggestions?
11-19-07, 02:57 PM
#2
FB+FC=F-ME
Sure its not just steam?
Is the smoke thick and acrid,or just haze like when you breathe out?
All cars emit steam when its cold outside since water is a normal byproduct of gasoline combustion.Try a different viscocity oil if your next service falls in the winter.I stopped running 20W50 because it was just too thick in the winter,I now run 10W30 year round with great results.
The trans could be coincedence,it could just be a bad slave or master cylinder.Or a bad pilot bearing.But its also not uncommon for heavy gear oil to become nearly soild in cold weather.My truck is also tougher to shift in the winter,until the trans comes up to temp.Some thinner weight gear oil can help,or just let the trans spin in neutral with the clutch out while the engine is warming up.This will coat the syncros in oil and help to warm things a bit before you get underway.
Is the smoke thick and acrid,or just haze like when you breathe out?
All cars emit steam when its cold outside since water is a normal byproduct of gasoline combustion.Try a different viscocity oil if your next service falls in the winter.I stopped running 20W50 because it was just too thick in the winter,I now run 10W30 year round with great results.
The trans could be coincedence,it could just be a bad slave or master cylinder.Or a bad pilot bearing.But its also not uncommon for heavy gear oil to become nearly soild in cold weather.My truck is also tougher to shift in the winter,until the trans comes up to temp.Some thinner weight gear oil can help,or just let the trans spin in neutral with the clutch out while the engine is warming up.This will coat the syncros in oil and help to warm things a bit before you get underway.
11-20-07, 12:14 PM
#3
Check the master cylinder and the slave cylinder for leaking fluid. I had a small leak on my slave cylinder (inside the little boot that covers the pushrod) and the pedal imroved 10 fold after changing it out. The part only cost $20 and is a super easy swap.
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