02 4.0 Main Seal Leak?

hi All,

My 02 TJ developed a leaky main seal after the Oil pan had to be replaced
due to a mishap with a rock.

I just had the dealer repair the leak and the next day it is leaking again.
I have heard rummers that once the 4.0 starts leaking, it never stops.

Is this true? if now, how do I ensure it stops. I am going to give the
dealer one more shot (hey i paid my deductable they may as well fix it).
After that I am going to do it myself.

Hi John,
Have them fix your valve cover, too. Wipe the rear of your head to
confirm.
God Bless America, Bill O|||||||O
http://www.billhughes.com/

John wrote:
>
> hi All,
>
> My 02 TJ developed a leaky main seal after the Oil pan had to be replaced
> due to a mishap with a rock.
>
> I just had the dealer repair the leak and the next day it is leaking again.
> I have heard rummers that once the 4.0 starts leaking, it never stops.
>
> Is this true? if now, how do I ensure it stops. I am going to give the
> dealer one more shot (hey i paid my deductable they may as well fix it).
> After that I am going to do it myself.

The valve cover is actually nice and tight.

That was redone 25,000 miles ago when the head cracked.

By the way, it only has 57000 on it now.


I will keep you posted.

JOHN
"L.W.(Bill) Hughes III" > wrote in message
...
> Hi John,
> Have them fix your valve cover, too. Wipe the rear of your head to
> confirm.
> God Bless America, Bill O|||||||O
> http://www.billhughes.com/
>
> John wrote:
>>
>> hi All,
>>
>> My 02 TJ developed a leaky main seal after the Oil pan had to be replaced
>> due to a mishap with a rock.
>>
>> I just had the dealer repair the leak and the next day it is leaking
>> again.
>> I have heard rummers that once the 4.0 starts leaking, it never stops.
>>
>> Is this true? if now, how do I ensure it stops. I am going to give the
>> dealer one more shot (hey i paid my deductable they may as well fix it).
>> After that I am going to do it myself.

If your oil pan hit a rock it is most likely deformed at the rear lip right
below the main seal. You probably never had your main seal go bad, but your
oil pan is deformed now in that spot. Some careful hammering fixed mine.
I did the same thing years ago to mine.
Also once a 4.0 leaks it can always be fixed. Mine is an 88 with 200k miles
on it and it has leaked in the past but is dry now. Whoever said that isnt
much of a mechanic.
KH

"John" > wrote in message
...
> The valve cover is actually nice and tight.
>
> That was redone 25,000 miles ago when the head cracked.
>
> By the way, it only has 57000 on it now.
>
>
> I will keep you posted.
>
> JOHN
> "L.W.(Bill) Hughes III" > wrote in message
> ...
>> Hi John,
>> Have them fix your valve cover, too. Wipe the rear of your head to
>> confirm.
>> God Bless America, Bill O|||||||O
>> http://www.billhughes.com/
>>
>> John wrote:
>>>
>>> hi All,
>>>
>>> My 02 TJ developed a leaky main seal after the Oil pan had to be
>>> replaced
>>> due to a mishap with a rock.
>>>
>>> I just had the dealer repair the leak and the next day it is leaking
>>> again.
>>> I have heard rummers that once the 4.0 starts leaking, it never stops.
>>>
>>> Is this true? if now, how do I ensure it stops. I am going to give the
>>> dealer one more shot (hey i paid my deductable they may as well fix it).
>>> After that I am going to do it myself.
>
>

Thanks for the info,

The old damaged oil pan was replaced with a new one.


"Kevin in San Diego" > wrote in message
news:EcKWf.14558$6a1.14512@fed1read04...
> If your oil pan hit a rock it is most likely deformed at the rear lip
> right below the main seal. You probably never had your main seal go bad,
> but your oil pan is deformed now in that spot. Some careful hammering
> fixed mine.
> I did the same thing years ago to mine.
> Also once a 4.0 leaks it can always be fixed. Mine is an 88 with 200k
> miles on it and it has leaked in the past but is dry now. Whoever said
> that isnt much of a mechanic.
> KH
>
> "John" > wrote in message
> ...
>> The valve cover is actually nice and tight.
>>
>> That was redone 25,000 miles ago when the head cracked.
>>
>> By the way, it only has 57000 on it now.
>>
>>
>> I will keep you posted.
>>
>> JOHN
>> "L.W.(Bill) Hughes III" > wrote in message
>> ...
>>> Hi John,
>>> Have them fix your valve cover, too. Wipe the rear of your head to
>>> confirm.
>>> God Bless America, Bill O|||||||O
>>> http://www.billhughes.com/
>>>
>>> John wrote:
>>>>
>>>> hi All,
>>>>
>>>> My 02 TJ developed a leaky main seal after the Oil pan had to be
>>>> replaced
>>>> due to a mishap with a rock.
>>>>
>>>> I just had the dealer repair the leak and the next day it is leaking
>>>> again.
>>>> I have heard rummers that once the 4.0 starts leaking, it never stops.
>>>>
>>>> Is this true? if now, how do I ensure it stops. I am going to give the
>>>> dealer one more shot (hey i paid my deductable they may as well fix
>>>> it).
>>>> After that I am going to do it myself.
>>
>>
>
>

Then the 'mechanic' has no clue....

Both my engines are 'dry'. One has 315K km and the other 6 years on new
gaskets.

I even swapped an old oil pan over because one rusted out.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

John wrote:
>
> Thanks for the info,
>
> The old damaged oil pan was replaced with a new one.
>
> "Kevin in San Diego" > wrote in message
> news:EcKWf.14558$6a1.14512@fed1read04...
> > If your oil pan hit a rock it is most likely deformed at the rear lip
> > right below the main seal. You probably never had your main seal go bad,
> > but your oil pan is deformed now in that spot. Some careful hammering
> > fixed mine.
> > I did the same thing years ago to mine.
> > Also once a 4.0 leaks it can always be fixed. Mine is an 88 with 200k
> > miles on it and it has leaked in the past but is dry now. Whoever said
> > that isnt much of a mechanic.
> > KH
> >
> > "John" > wrote in message
> > ...
> >> The valve cover is actually nice and tight.
> >>
> >> That was redone 25,000 miles ago when the head cracked.
> >>
> >> By the way, it only has 57000 on it now.
> >>
> >>
> >> I will keep you posted.
> >>
> >> JOHN
> >> "L.W.(Bill) Hughes III" > wrote in message
> >> ...
> >>> Hi John,
> >>> Have them fix your valve cover, too. Wipe the rear of your head to
> >>> confirm.
> >>> God Bless America, Bill O|||||||O
> >>> http://www.billhughes.com/
> >>>
> >>> John wrote:
> >>>>
> >>>> hi All,
> >>>>
> >>>> My 02 TJ developed a leaky main seal after the Oil pan had to be
> >>>> replaced
> >>>> due to a mishap with a rock.
> >>>>
> >>>> I just had the dealer repair the leak and the next day it is leaking
> >>>> again.
> >>>> I have heard rummers that once the 4.0 starts leaking, it never stops.
> >>>>
> >>>> Is this true? if now, how do I ensure it stops. I am going to give the
> >>>> dealer one more shot (hey i paid my deductable they may as well fix
> >>>> it).
> >>>> After that I am going to do it myself.
> >>
> >>
> >
> >

Then its your valve cover like Bill said.
KH


"Kevin in San Diego" > wrote in message
news:EcKWf.14558$6a1.14512@fed1read04...
> If your oil pan hit a rock it is most likely deformed at the rear lip
> right below the main seal. You probably never had your main seal go bad,
> but your oil pan is deformed now in that spot. Some careful hammering
> fixed mine.
> I did the same thing years ago to mine.
> Also once a 4.0 leaks it can always be fixed. Mine is an 88 with 200k
> miles on it and it has leaked in the past but is dry now. Whoever said
> that isnt much of a mechanic.
> KH
>
> "John" > wrote in message
> ...
>> The valve cover is actually nice and tight.
>>
>> That was redone 25,000 miles ago when the head cracked.
>>
>> By the way, it only has 57000 on it now.
>>
>>
>> I will keep you posted.
>>
>> JOHN
>> "L.W.(Bill) Hughes III" > wrote in message
>> ...
>>> Hi John,
>>> Have them fix your valve cover, too. Wipe the rear of your head to
>>> confirm.
>>> God Bless America, Bill O|||||||O
>>> http://www.billhughes.com/
>>>
>>> John wrote:
>>>>
>>>> hi All,
>>>>
>>>> My 02 TJ developed a leaky main seal after the Oil pan had to be
>>>> replaced
>>>> due to a mishap with a rock.
>>>>
>>>> I just had the dealer repair the leak and the next day it is leaking
>>>> again.
>>>> I have heard rummers that once the 4.0 starts leaking, it never stops.
>>>>
>>>> Is this true? if now, how do I ensure it stops. I am going to give the
>>>> dealer one more shot (hey i paid my deductable they may as well fix
>>>> it).
>>>> After that I am going to do it myself.
>>
>>
>
>

If the CCV/PCV is clogged up the pressure at the top
of the engine will blow out the rear main seal...

just my 2 cents

Brian Moga
Waxhaw.Net

On Wed, 29 Mar 2006, John wrote:

> Date: Wed, 29 Mar 2006 17:55:39 -0500
> From: John >
> Newsgroups: rec.autos.makers.jeep+willys
> Subject: 02 4.0 Main Seal Leak?
>
>
>
> hi All,
>
> My 02 TJ developed a leaky main seal after the Oil pan had to be replaced
> due to a mishap with a rock.
>
> I just had the dealer repair the leak and the next day it is leaking again.
> I have heard rummers that once the 4.0 starts leaking, it never stops.
>
> Is this true? if now, how do I ensure it stops. I am going to give the
> dealer one more shot (hey i paid my deductable they may as well fix it).
> After that I am going to do it myself.
>
>
>

If you went to a surgeon, and he screwed something up, would you keep going
back, until he "got it right?"

Earle

"billy ray" > wrote in message
...
> I would think the point is he already paid the dealership to repair it and
> they didn't.
>
> Shouldn't they keep fixing it until they get it right?
> (or refund his money)
>
>
> "Brian Moga" > wrote in message
> . ..
> >
> > If the CCV/PCV is clogged up the pressure at the top
> > of the engine will blow out the rear main seal...
> >
> > just my 2 cents
> >
> > Brian Moga
> > Waxhaw.Net
> >
> > On Wed, 29 Mar 2006, John wrote:
> >
> >> Date: Wed, 29 Mar 2006 17:55:39 -0500
> >> From: John >
> >> Newsgroups: rec.autos.makers.jeep+willys
> >> Subject: 02 4.0 Main Seal Leak?
> >>
> >>
> >>
> >> hi All,
> >>
> >> My 02 TJ developed a leaky main seal after the Oil pan had to be
replaced
> >> due to a mishap with a rock.
> >>
> >> I just had the dealer repair the leak and the next day it is leaking
> >> again.
> >> I have heard rummers that once the 4.0 starts leaking, it never stops.
> >>
> >> Is this true? if now, how do I ensure it stops. I am going to give the
> >> dealer one more shot (hey i paid my deductable they may as well fix
it).
> >> After that I am going to do it myself.
> >>
> >>
> >>
>
>


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Dealerships, I have found, generally have 1 'mechanic' and the balance of
the service department is composed of 'technicians' who are generally
capable of performing oil and filter changes, installing batteries, and
washing the vehicle if they have a complete library of reference manuals and
step by step videos.

If the OP takes it back he can request that the actual 'mechanic' work on
his vehicle this time..

As for surgeons ... I generally don't have hacks carving on me.


"Earle Horton" > wrote in message
om...
> If you went to a surgeon, and he screwed something up, would you keep
> going
> back, until he "got it right?"
>
> Earle
>
> "billy ray" > wrote in message
> ...
>> I would think the point is he already paid the dealership to repair it
>> and
>> they didn't.
>>
>> Shouldn't they keep fixing it until they get it right?
>> (or refund his money)
>>
>>
>> "Brian Moga" > wrote in message
>> . ..
>> >
>> > If the CCV/PCV is clogged up the pressure at the top
>> > of the engine will blow out the rear main seal...
>> >
>> > just my 2 cents
>> >
>> > Brian Moga
>> > Waxhaw.Net
>> >
>> > On Wed, 29 Mar 2006, John wrote:
>> >
>> >> Date: Wed, 29 Mar 2006 17:55:39 -0500
>> >> From: John >
>> >> Newsgroups: rec.autos.makers.jeep+willys
>> >> Subject: 02 4.0 Main Seal Leak?
>> >>
>> >>
>> >>
>> >> hi All,
>> >>
>> >> My 02 TJ developed a leaky main seal after the Oil pan had to be
> replaced
>> >> due to a mishap with a rock.
>> >>
>> >> I just had the dealer repair the leak and the next day it is leaking
>> >> again.
>> >> I have heard rummers that once the 4.0 starts leaking, it never stops.
>> >>
>> >> Is this true? if now, how do I ensure it stops. I am going to give the
>> >> dealer one more shot (hey i paid my deductable they may as well fix
> it).
>> >> After that I am going to do it myself.
>> >>
>> >>
>> >>
>>
>>
>
>
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