[DML] Re: front main seal leak
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[DML] Re: front main seal leak

If the card stays in place then you probably have a good motor. A
compression test and a differential leak-down test can also be used to
confirm the condition of the motor. If you are not burning any oil
that is also a good sign but can not always be trusted because if you
have leaks that uses oil so you can't be sure how much leaks and how
much burns. Anyway if you don't have positive pressure at idle then
you just have a problem with that seal. Maybe the pulley is on and not
concentric. If it wobbles then it won't seal. 
David Teitelbaum
vin 10757 

--- In dmcnews@xxxxxxxxxxxxxxx, "Nathan Sobieralski" <valleyrat12@...>
> Hello David,
> I tried the 3X5 card technique. It vibrates up and down but stays in 
> place, it does not get blow off. I hope this indicates that my 
> engine is OK. There is a strong vacuum from the small hose that 
> connects to the breather and if I detach the larger hose from the 
> air filter I feel a vacuum there too. I also observed oil seeping 
> from the crank shaft pulley while the engine was idling, very small 
> amount. The engine runs very well since I sorted out the Lambda 
> issues, smooth idle and good power. An engine with worn rings, valve 
> guides, etc would show other symptoms correct? Like burning oil?
> Nathan
> --- In dmcnews@xxxxxxxxxxxxxxx, "David Teitelbaum" <jtrealty@> 
> wrote:
> >
> > Possible causes of excess pressure in the crankcase:
> > Cracked, stuck, worn, or missing piston rings
> > Exessively worn valve guides.
> > Improperly adjusted valves
> > Plugged up or not connected vacuum hoses to create the negative 
> pressure.
> > Pull the oil filler. Take a small piece of stiff card stock like a 
> 3x5
> > index card and place it over the fill on the motor as the motor is
> > idling. It should stay in place. If it does not, you have problems.
> > David Teitelbaum
> > vin 10757
> > 
> > 
> >  What will cause too much crank case pressure? I have notices a 
> draft 
> > > coming from around the oil fill cap/breather, would that 
> indicate 
> > > too much crank pressure?
> >

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