Wednesday, May 28, 2008 - 08:06 pm, by: Steven Kildey(Killalux)
Hey all, A mechanic has bought a car into our shop to check out a starting prob. The symptoms are After the car has sat over-night, when it is started in blows out quite a bit of blueish and black smoke, but clears itself within a minute or so. Only does it when it has sat overnight. It does not run rough at all, just the smoke. He reports that it uses no oil at all. It holds fuel pressure so that ellimintaes injectors leaking down. He also reports that iy is using power steer fluid, but can not find any traces of a leak.
My question is is it possible for power steer oil to leak out through the power steer idle control valve, and then get sucked up into the engine on start up. Or would it just be valve stem seals, and he is just not noticing the loss of engine oil (i guess you wouldn't loose much through the valve stems.
Friday, May 30, 2008 - 10:55 pm, by: Phil Gibson(Sciflyer)
it will be the seals
what grade oil are you using
generally if you can overlook the smoke on startup its not a major issue... over time you will loose a little performance/economy as the oil cakes on the back of the valves
However you have to balance this with the fact that to fix it means stripping the heads, not exaclty a 5 minute job
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