car smoking,not losing oil
Thread Starter
Senior Member
Joined: Feb 2000
Posts: 581
Likes: 0
From: US
Car: 86 iroc
Engine: 305
car smoking,not losing oil
I have a 86 iroc lg4 with 150000 miles.it started smoking alittle on start up and at long stop lights.I figured this was valve leaking but I have checked my oil level and it hasnt changed.I was told this could be a bad master cylinder sucking brake fluid into vacum lines.I have never heard this before,anyone heard this one.Guess I will start looking at motors.O,it seems this smoking started all of a sudden,not a progressive thing.The car is stored alot and not driven much,maybe 300 m iles in the last 2 years.thanks
Senior Member
iTrader: (1)
Joined: Jul 2007
Posts: 1,141
Likes: 2
From: MA
Car: '87 IROC/'68 SS
Engine: 5.7L/350
Transmission: 700R4/Muncie 4-spd
Axle/Gears: 3.27 9 bolt / 3.31 12 bolt
Re: car smoking,not losing oil
It doesn't take much oil to make a lot of smoke. It sounds like the well known valve seal/guide issue to me.
Supreme Member
iTrader: (2)
Joined: Aug 2007
Posts: 2,529
Likes: 1
From: Fairhope, AL
Car: 89RS(other cars & pics in vBgarage)
Engine: LO3, 305 TBI Mildly Modified
Transmission: BakerBuilt 700R4 w/B&M Megashifter
Axle/Gears: 3.23 Auburn Pro Series LSD
Re: car smoking,not losing oil
valve seal, lol most chevys do it at start up once they get some miles on them, call it pre start up lube LOL Thread Starter
Senior Member
Joined: Feb 2000
Posts: 581
Likes: 0
From: US
Car: 86 iroc
Engine: 305
Re: car smoking,not losing oil
yeah,I could handle it at startup.guess I got my money out of the ol 305.time to upgrade.Just curios though,has anyone heard of this master cylinder sucking brake fluid in?thats new to me.
Supreme Member
iTrader: (1)
Joined: Aug 2007
Posts: 1,390
Likes: 0
From: Bright, IN
Car: '86 Bird, 96 ImpalaSS, 98 C1500XCab
Engine: LG4, LT1, L31
Transmission: 700R4, 4L60E, 4L60E
Axle/Gears: 3.73 Tors, 4.88 spool, 3.73 Eaton
Re: car smoking,not losing oil
It's the valve seals, probably the exhaust.
Mine sat around a lot for two years, and upon returning to regular service, started smoking a lot more than before on startup. I just replace the seals last week. The exhausts were totally nonfunctional.
Totally clean on startup and at all times now!
Mine sat around a lot for two years, and upon returning to regular service, started smoking a lot more than before on startup. I just replace the seals last week. The exhausts were totally nonfunctional.
Totally clean on startup and at all times now!
Member
Joined: Oct 2008
Posts: 179
Likes: 0
From: Beaverton, OR
Car: '91 Camaro 305V8, '91 Camaro 3.1V6
Re: car smoking,not losing oil
My '73 Nova has that problem. About every 4-5K I have to refill the rear brake reservoir.
How's your break fluid level? If you pull the vacuum hose off is there any residue in there?
How's your break fluid level? If you pull the vacuum hose off is there any residue in there?
Thread
Thread Starter
Forum
Replies
Last Post