Re: Oil on engine
 

On the plastic one, [4.0] does it really hurt to tighten them?
It SEEMS to have cut my leak down so I don't see anything on
the driveway any more... someone else here posted that it was
a waste of time. The dealer did say that it was a waste to
just replace the gasket, to replace both, but a few of those
darn bolts look like a PITA to get out of there....


Mike Romain wrote:

> Put your fingers on the valve cover bolts. My bet is a couple are
> finger loose. They like to do that on both the plastic and steel cover.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> Foot Loose wrote:
>>
>> Hey got a quick question. I have oil on the top of my 258 between the valve
>> cover and header/intake manifold. I am thinking that the valve cover is
>> leaking. It is a new engine about 8000 miles so I do not think it is coming
>> from the headers, but I could be wrong. I know that the 258 valve covers
>> leak all the time, mine is metal, but I thought that it was always in the
>> back and down onto the bell housing of the transmission. Any and all
>> thoughts are appreciated.
>>
>> Thanks
>> Scott
>> 90YJ

Re: Oil on engine
 

Lon Stowell wrote:
> On the plastic one, [4.0] does it really hurt to tighten them?
> It SEEMS to have cut my leak down so I don't see anything on
> the driveway any more... someone else here posted that it was
> a waste of time. The dealer did say that it was a waste to
> just replace the gasket, to replace both, but a few of those
> darn bolts look like a PITA to get out of there....

Depends. Most of the time I've seen someone tighten the bolts
to stop a leak they only managed to warp the valve cover and
make the leak "better". :)

On my I6 I just seat the valve cover in a nice bead of RTV
then lightly tighten the nuts. Then a dab of RTV smeared
around the threads keeps the nuts from backing off.

That's lasted over 4 years.


--
-- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors

Re: Oil on engine
 

As long as you tighten them properly and not over tighten them, it sure
won't hurt anything.

99% of the leaky ones I have seen had 'finger' loose bolts. Retorquing
them helps a lot on the leak. Sometimes it even stops the leak totally.

Mike

Lon Stowell wrote:
>
> On the plastic one, [4.0] does it really hurt to tighten them?
> It SEEMS to have cut my leak down so I don't see anything on
> the driveway any more... someone else here posted that it was
> a waste of time. The dealer did say that it was a waste to
> just replace the gasket, to replace both, but a few of those
> darn bolts look like a PITA to get out of there....
>
> Mike Romain wrote:
>
> > Put your fingers on the valve cover bolts. My bet is a couple are
> > finger loose. They like to do that on both the plastic and steel cover.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > Foot Loose wrote:
> >>
> >> Hey got a quick question. I have oil on the top of my 258 between the valve
> >> cover and header/intake manifold. I am thinking that the valve cover is
> >> leaking. It is a new engine about 8000 miles so I do not think it is coming
> >> from the headers, but I could be wrong. I know that the 258 valve covers
> >> leak all the time, mine is metal, but I thought that it was always in the
> >> back and down onto the bell housing of the transmission. Any and all
> >> thoughts are appreciated.
> >>
> >> Thanks
> >> Scott
> >> 90YJ