Tech / General EngineIs your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
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I posted the same topic on a different site, and would appear the general consensus is that on a motor over 50k miles is:
1. 95% Valve stem seals worn.
2. 3% over rich at start up.
3. 2% Coolant leak?
p.s. My amateur expression of the posts received.
I have mine booked into the shop tomorrow for a full top end gasket replacement. I don't have a major smoke issue, it's just a bit embarassing leaving a cruise having parked up all day, with that smoke following me for about five minutes!!
And if ya don't believe me, I fixed a broken cat with a set of SLP headers, 2 catco cats and a 3" Flowmaster catback last month. I really need to stop going for broke though, I'm going broke.
Valve Stem seals are easy to fix. I did mine with some nylon chord and some box-end wrenches. Took a couple of hours and I had never done it before nor had I ever worked on one of these cars before.
Serious, a socketset, some box end wrenches and large washers and nylon chord.
...last time I checked valve seals made a puff of *BLUE smoke. A puff of white smoke would be water in the form of steam. I have been told that this is the classic symtom of a pinhole leak in the head gasket. It is hard to detect when the leak is small though. What to check for though would be excessive air in your radiator. (bubbles!) maybe even a little oil in the radiator defending on how old/how well your rings are sealing...If the leak is too small though you probably wont see anything. When the car shuts off, so does the cylinder pressures. If the leak is at a cylinder that is at low pressure when the car stops, the high pressure coolant system (~15-19 lbs) will spray into the cylinder until pressures equalize (usually not very much makes its way in....then when it starts, you get that nice white puff. I'm not saying that irt can't be anything else, but I am saying that anyone who knows anything knows that oil burns blue. Too much fuel generally burns black, water (coolant) boils to steam and is white.
i will take a look tommorrow at all what you guys are saying..cuz its getting bigger and bigger...just on start though then you rev it a bit and it goes away..and it is bluish white...
__________________ 1990 Iroc Z28-305,
72000 miles, Black wit gray interior
MODS-
Superchip and K&N filters, airfoil. clear corner markers, conversion headlights, LED signal bulbs, megashifter, Transgo reprogramming kit, B&M Trick Shift FLuid, 16" "2 stripe factory aluminum wheels
NEED TO INSTALL-computer camshaft, and polish wheels and plenum.. 4.10 gears
WANTED TO BUY-sill plates
ONLY 2 MONTHS OR SO LEFT TO DRIVE ER THEN SHE GOES TO STORAGE..
dejaybrian does this happen when u start ur car in the morning?
i see you live in wisconson right? so it could be possible that when u start it in the morning it is condonsitation from the warm exhaust to the cold air?
just my .02$
it does it in the morning only, and all that smoke i dont think is condensation...it might be the cold start injector though?? could that be a possibility...and its around 50-60 up here nowadays..not that cold
lol
__________________ 1990 Iroc Z28-305,
72000 miles, Black wit gray interior
MODS-
Superchip and K&N filters, airfoil. clear corner markers, conversion headlights, LED signal bulbs, megashifter, Transgo reprogramming kit, B&M Trick Shift FLuid, 16" "2 stripe factory aluminum wheels
NEED TO INSTALL-computer camshaft, and polish wheels and plenum.. 4.10 gears
WANTED TO BUY-sill plates
ONLY 2 MONTHS OR SO LEFT TO DRIVE ER THEN SHE GOES TO STORAGE..