[DML] Re: Followup on transmission flange seal fix
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[DML] Re: Followup on transmission flange seal fix



Before you do the seal on the crank pulley check the blow-by. Pull the
oil cap off while the motor is running and see if there is much back
pressure. Normally the crankcase is under negative pressure. If the
engine has a lot of blow-by (from wear) the vacuum will not be enough
to create the negative pressure and you start to see leaks. One thing
to check is the metering orifice on the air tube where the hose
connects from the oil cap. If it gets dirty and plugged up you won't
get enough vacuum on the crankcase. You could also try enlarging it
but you will probably affect idle quality. Another thing to try is
going up a weight on your oil. With that mileage and the summer heat
you may be running a little thin. Of course you may still have a worn
seal (especially at that mileage). It is easier if you remove the
muffler and heat shield and even easier if you remove the rear facia!
In fact removing the facia is the only way you will be able to use an
impact gun on it. The other way to try it is to get a long breaker bar
on it and slam it with a hammer. It should come loose but then you
have to get a puller on it and there isn't enough room with the facia
in the way.
David Teitelbaum
vin 10757


--- In dmcnews@xxxxxxxxxxxxxxx, "stainlessilusion" <5n-@xxxx> wrote:
> I believe it's 36mm. I got mine at advance auto, both impact and 
> regular 36mm sockets. Haven't tried to pull the pulley, I needed the 
> socket to turn the crank, was planning on replacing the seal behind 
> the pulley but turned out to be something else leaking so I never had 
> to pull the pulley. I'm sure you'll need a puller though. I have yet 
> to work on an [undamaged] engine where the crank pulley just slides 
> right off. -----Dani B. #5003
> 
> 
>  BUT -- what 
> > is the nut size on the main crank? I'll need to swing by and pick 
> up 
> > the proper socket for my impact wrench, and I'd like to ensure I 
> get 
> > the right one the first time. Is a pulley puller needed to get the 
> > pulley off after the nut is removed or is it held in plce by the 
> nut 
> > only (not pressed on)?
> > 
> > For those that are wondering what kind of POS I'm working on, it's 
> > my daily driver that has roughly 175,000 miles on it. I think 
> having 
> > to replace a transmission flange seal after that kind of use seems 
> > pretty reasonable. I finally replaced my original Moto alternator a 
> > couple weeks ago as well, and I'm pretty satisfied getting 175K 
> > miles of service out of it. After having my friend's Porsche on my 
> > lift this weekend, I have really come to appreciate how serviceable 
> > our DeLoreans are. 
> > 
> >     Knut








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