Ok,

this just started happening about 5 days ago, cars has 60K miles on it, I checked the site and it might be a bad valve seal, but also I just replaced my MAF relays, and could it be running rich .... as it was running lean before replacing. If it is running rich is there any way to lean it without a AFPR???? any help on this matter is most apprciated.

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1989 GTA 350 TPI
Stock:
- T-tops
- Dual cats
- 9-Bolt 7.75" Rearend
- 3.27 gears
Mods:
- Dynomax Super Turbo Muffler

1992 RS 305 TBI - Sold

 

If it is just one quick puff on start up, it is valve guide seals. If it is valve guide seals, I wouldn't worry about it. It is kind of standard on any Chevy small block with 50k miles or more. It doesn't hurt anything. If it is running rich, and everything is in good shape-i.e. good injectors, clean air cleaner, good O2 sensor, etc. then you just need to drive the car a few miles to let the computer adjust to the new maf.

 

So I don't REALLY have to worry about anything. That's good to know, Thanks

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1989 GTA 350 TPI
Stock:
- T-tops
- Dual cats
- 9-Bolt 7.75" Rearend
- 3.27 gears
Mods:
- Dynomax Super Turbo Muffler
-K&N Air Filter

1992 RS 305 TBI - Sold

 

I think you're running a little rich, valve seals blow white smoke.

 

white is coolant


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350 with stealth intake, holley carb, 470 lift cam. 700r4 with .5 boost valve, vette servo, tci lock-up kit, B&M megashifter. Richmond 3.73 gears, powertrax locker, timkin bearings, synthetic lube. Custom 3 inch single into 2 2.5 pipes. 1 1/2 drop springs, 1 5/16 solid front sway bar, 1 inch rear bar, custom subframe connectors, custom LCA relocation brackets. Kobel ground FX, current red metallic paint. Lots of other stuff...
82camaro

 

If the problem only occurs briefly at start up, don't worry about it. It is just valve guide seals. The computer doesn't go to closed loop until the engine is warm, so you will run a little rich until the engine warms up.

 

I stand corrected, worn valve seals blow gray. (Always looked kinda white to me... oops)

 

I have this problem too at start up, I think it's the valve seats too. But I can also smell some oil while driving sometimes. When does it become something to worry about?

 

I wouldn't worry about it until the oil consumption becomes out of hand. How much oil is it using, or is the oil consumption even noticable. My 1991 Jimmy 4.3L puffs a bit on start-up(140000 miles) and is just below the full mark on the dipstick at 3000 miles.

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350 with stealth intake, holley carb, 470 lift cam. 700r4 with .5 boost valve, vette servo, tci lock-up kit, B&M megashifter. Richmond 3.73 gears, powertrax locker, timkin bearings, synthetic lube. Custom 3 inch single into 2 2.5 pipes. 1 1/2 drop springs, 1 5/16 solid front sway bar, 1 inch rear bar, custom subframe connectors, custom LCA relocation brackets. Kobel ground FX, current red metallic paint. Lots of other stuff...
82camaro

 

I asked a random mechanic today just in case anybody else was wondering, he said it's something to worry about when the oil consumption gets too be a lot, and also when the plugs start fouling out.