White/blue smoke at start up- what could be the cause??
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Junior Member
Joined: Aug 2014
Posts: 22
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Car: 1988 Camaro IROC-Z convertible
White/blue smoke at start up- what could be the cause??
I've got a 1988 IROC convertible with the 305 TPI, whenever I start the car up hot or cold I get a large amount of white/blue smoke...what is/are the possible cause(s) of this. Thanks for any help!
Senior Member
iTrader: (2)
Joined: May 2003
Posts: 539
Likes: 3
From: Huntsville, AL
Car: 87 GTA, 88 GTA, 92 TA, 72 RS SS
Engine: 350, 350, 305, 396
Transmission: T56, 700r4, 700r4, T56
Axle/Gears: 3.42, 3.23, 3.23, 3.73
Re: White/blue smoke at start up- what could be the cause??
Valve seals need replacing.
Member
Joined: Mar 2011
Posts: 114
Likes: 2
From: Chicago, Il
Car: 1986 Iroc Z28
Engine: 305 TPI
Transmission: 700R4
Re: White/blue smoke at start up- what could be the cause??
+ another 1 for valve seals! Mine does same thing, just havent got around to replacing. Sounds like Abubaca is dead on when he says they all do it.
Joined: Feb 2001
Posts: 8,494
Likes: 411
From: Sophia, NC
Car: 2016 Camaro SS + 1986 Z28
Re: White/blue smoke at start up- what could be the cause??
I read a book where the author said GM must've designed them to leak at 100k miles, because you can almost guarantee it's gonna happen! Kidding of course, but you get the point!
Senior Member
iTrader: (2)
Joined: May 2003
Posts: 539
Likes: 3
From: Huntsville, AL
Car: 87 GTA, 88 GTA, 92 TA, 72 RS SS
Engine: 350, 350, 305, 396
Transmission: T56, 700r4, 700r4, T56
Axle/Gears: 3.42, 3.23, 3.23, 3.73
Re: White/blue smoke at start up- what could be the cause??
I've noticed it seems to happen sooner on 305's than 350's though.
Joined: Apr 2000
Posts: 3,938
Likes: 99
From: Huntsville AL
Car: 88GTA
Engine: 5.7TPI
Transmission: Auto
Axle/Gears: 3.27
Re: White/blue smoke at start up- what could be the cause??
+ another!! JOIN THE CROWD!!!! GM replaced mine at 40k under warrenty. It's time once again!!
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Senior Member
iTrader: (2)
Joined: Mar 2014
Posts: 728
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From: South Texas
Car: '89 Iroc Z28-15,100 Original Miles
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: Limited Slip, 2.77 Ratio
Re: White/blue smoke at start up- what could be the cause??
Same here at 15k, only on warm start up for me. I guess sitting so much of it's life caused them to dry up and seep.
Joined: Apr 2000
Posts: 3,938
Likes: 99
From: Huntsville AL
Car: 88GTA
Engine: 5.7TPI
Transmission: Auto
Axle/Gears: 3.27
Re: White/blue smoke at start up- what could be the cause??
Arnold, on a warm start-up, you MAY have injectors leaking...hot soaks...fuel leaking into cylinders. I guess you could check your pressure at the rail before you start it up warm and see if it has pressure at the rail. Just some idears.
But yeah, with your seals sitting so long, who knows.
But yeah, with your seals sitting so long, who knows.
Joined: Dec 2000
Posts: 1,954
Likes: 68
From: NC
Car: 1987 Iroc
Engine: 357 Single plane and a Ysi vortech
Transmission: T56
Axle/Gears: 3.50 9"
Re: White/blue smoke at start up- what could be the cause??
Mine was smoking on warm start ups and the first "take off" from a stoplight if it idled there for an extended time.
Surprisingly valve seals and a fresh oil change(not sure when the last time it was done) cured nearly all of my issues!
I used the Fel-Pro intake ones on all valves and it worked out great!
Surprisingly valve seals and a fresh oil change(not sure when the last time it was done) cured nearly all of my issues!
I used the Fel-Pro intake ones on all valves and it worked out great!
Senior Member
iTrader: (2)
Joined: Mar 2014
Posts: 728
Likes: 51
From: South Texas
Car: '89 Iroc Z28-15,100 Original Miles
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: Limited Slip, 2.77 Ratio
Re: White/blue smoke at start up- what could be the cause??
Arnold, on a warm start-up, you MAY have injectors leaking...hot soaks...fuel leaking into cylinders. I guess you could check your pressure at the rail before you start it up warm and see if it has pressure at the rail. Just some idears.
But yeah, with your seals sitting so long, who knows.
But yeah, with your seals sitting so long, who knows.
Bob, I think you mentioned that possibility to me when we spoke a while back. I'm looking to remedy this problem this Summer so I will have them checked.
Thanks bud!
Joined: Apr 2000
Posts: 3,938
Likes: 99
From: Huntsville AL
Car: 88GTA
Engine: 5.7TPI
Transmission: Auto
Axle/Gears: 3.27
Re: White/blue smoke at start up- what could be the cause??
Arnold, yeah, I think I remember that...sometimes sett'n in!
NufNuff, did you use the PITA little "O" rings with them too, or just the the intake ones alone?
NufNuff, did you use the PITA little "O" rings with them too, or just the the intake ones alone?
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