fuel injector leak- 86 944T

[sjpa...@yahoo.com]

I've got fuel dribbling out of the place where no. 1 and 3 injectors
go into the intake manifold. It's definitely from the O-rings because
thr injectors can be easily rotated. No. 2 is very dificult to rotate
and no. 4 won't rotate at all. I had such a leak before and replaced
all of the O-rings, even though the originals looked OK, so the
haven't deteriorated. I haven't had any trouble until this week, I
tightened the fuel rail which lessened the problem, but didn't
eliminate it. Before I take the whole thing apart and go out and buy
new O-rings I have two questions. Would it make sense to use silicon
sealant or something similar to help seal these these things? I
understand that there is a Volvo model that uses the same kit as the
944T. Does anyone know which one? It would make my life easier if I
could just walk the 15 blocks to autozone, rather than to send off to
Pelican. Thanks in advance.

[darthpup]

I went to Autozone and asked. They gave me Ford F-150 rings which
have worked fine. Every few months you need to spray some silicon oil
around the injectors to lubricate the rings and prevent them from
drying out.

[William Noble]

no opinion on whether F-150 rings are right, but I never had to spray
anything on rings to protect them - this is after owning/driving/maintianing
944s for over 20 years - in fact I never had a fuel injector o-ring fail -
so something odd is going on - RENBAY sells a kit with the rings at a
reasonable price - now none of my cars were turbos, so maybe there is
something special there, but I kinda doubt it. I think you either got
incorrect rings, or the loose fuel rail caused vibration that made them
loosen up and go bad.

"darthpup" <amch...@mailexcite.com> wrote in message
news:49cf7e39-9b93-4fc9...@t54g2000hsg.googlegroups.com...

** Posted from http://www.teranews.com **

[jolie]

I also NEVER had a problem with the fuel injectors - and never sprayed
silicone in there either.That's 800K miles with 2 944's. One car alone had
550,000 miles and I never replaced one injector or seal. Never used dry gas
either - or any gas tank cleaner. Cheapest gas, cheapest Wal Mart oil that
meets Porsche specs - and away we go...

However, if I were to replace the seals, I would give them a shot of
silicone lubrication to get them to seat properly.
Matter of fact - I just checked the manual... and it says P. 24-12:
Installing Fuel Injectors - COAT BOTTOM SEAL WITH A SILICONE GREASE...

joliett
______________
______________

"Jack D. Russell, Sr." <jackru$$el...@notmail.com.invalid> wrote in message
news:Xns9AD742E61...@85.214.90.236...
> "William Noble" <nob...@nowhere.com> wrote in
> news:7ea21$486fc90a$15...@news.teranews.com:

> ...and introducing a silicon based product into the fuel system seems
> like a good way to destroy our $$$ Oxygen Sensors, I would think.
>
>
> --
> Jack