L.W. \(Bill\) Hughes III

I vote valve cover.
http://www.neow.org/rms1.html
http://tek-tonic.com/rearmainseal/
God Bless America, Bill 0|||||||0
mailto:-------------------- http://www.----------.com/

"NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message
news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com...
> Ok,
>
> I'm hoping to get some quick advice on replacing the rear main seal in
> my 90 wrangler. I've got the 258 - 4.2L engine with manual
> transmission. I've been trying to determine where my oil leak is and
> have determined with some help that its the Rear Main Seal leaking.
> How hard is it to replace this? And I know looking up the part for
> it, it asks if its the 1 piece or 2 piece seal which if I'm looking at
> things right I think with the setup I have its the 1 piece seal. Can
> anyone verify that for me and let me know what type of nightmare it is
> going to be to replace that?
>
> Thanks.
>

L.W. \(Bill\) Hughes III

I vote valve cover.
http://www.neow.org/rms1.html
http://tek-tonic.com/rearmainseal/
God Bless America, Bill 0|||||||0
mailto:-------------------- http://www.----------.com/

"NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message
news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com...
> Ok,
>
> I'm hoping to get some quick advice on replacing the rear main seal in
> my 90 wrangler. I've got the 258 - 4.2L engine with manual
> transmission. I've been trying to determine where my oil leak is and
> have determined with some help that its the Rear Main Seal leaking.
> How hard is it to replace this? And I know looking up the part for
> it, it asks if its the 1 piece or 2 piece seal which if I'm looking at
> things right I think with the setup I have its the 1 piece seal. Can
> anyone verify that for me and let me know what type of nightmare it is
> going to be to replace that?
>
> Thanks.
>

L.W. \(Bill\) Hughes III

I vote valve cover.
http://www.neow.org/rms1.html
http://tek-tonic.com/rearmainseal/
God Bless America, Bill 0|||||||0
mailto:-------------------- http://www.----------.com/

"NewbieJeepGuy" <ndittoo@yahoo.com> wrote in message
news:1170094564.918220.302540@h3g2000cwc.googlegro ups.com...
> Ok,
>
> I'm hoping to get some quick advice on replacing the rear main seal in
> my 90 wrangler. I've got the 258 - 4.2L engine with manual
> transmission. I've been trying to determine where my oil leak is and
> have determined with some help that its the Rear Main Seal leaking.
> How hard is it to replace this? And I know looking up the part for
> it, it asks if its the 1 piece or 2 piece seal which if I'm looking at
> things right I think with the setup I have its the 1 piece seal. Can
> anyone verify that for me and let me know what type of nightmare it is
> going to be to replace that?
>
> Thanks.
>

NewbieJeepGuy

Thanks all for your help so far. I have replaced the Valve Cover
Gasket as suggested before posting this message and have gotten the
thing pretty much narrowed down to the rear main seal. Unless it can
leak from somewhere else in back and make a few of us think its the
Rear Main.

Micah, thanks for all the info you put in and you stated that it is a
2 piece seal? Not a one piece? As I stated I have the 90 Wrangler YJ
with the 258 4.2L engine in it and I was talking to a couple auto
parts shops and they kept asking me if it had the 1 or 2 piece seal.
I guess I got confused because to me with that year and engine it
should be pretty straightforward which one it would be. So I need to
look for the FEL-BS13879 part by Fel-Pro. I did a quick search and
that states 2 piece Rear Main Seal application for the AMC/
International/Jeep 196-258 L6 engines.

Now would you have any good instructions or reference to any on the
net to print out while I tackle this fun project. I'm a computer
person that is just getting into this jeep and engine stuff but know
it will save me lots of money if I can do some basic or the easier
stuff than going to the shop all the time.

Thanks.
ndittoo@yahoo.com

NewbieJeepGuy

Thanks all for your help so far. I have replaced the Valve Cover
Gasket as suggested before posting this message and have gotten the
thing pretty much narrowed down to the rear main seal. Unless it can
leak from somewhere else in back and make a few of us think its the
Rear Main.

Micah, thanks for all the info you put in and you stated that it is a
2 piece seal? Not a one piece? As I stated I have the 90 Wrangler YJ
with the 258 4.2L engine in it and I was talking to a couple auto
parts shops and they kept asking me if it had the 1 or 2 piece seal.
I guess I got confused because to me with that year and engine it
should be pretty straightforward which one it would be. So I need to
look for the FEL-BS13879 part by Fel-Pro. I did a quick search and
that states 2 piece Rear Main Seal application for the AMC/
International/Jeep 196-258 L6 engines.

Now would you have any good instructions or reference to any on the
net to print out while I tackle this fun project. I'm a computer
person that is just getting into this jeep and engine stuff but know
it will save me lots of money if I can do some basic or the easier
stuff than going to the shop all the time.

Thanks.
ndittoo@yahoo.com

NewbieJeepGuy

Thanks all for your help so far. I have replaced the Valve Cover
Gasket as suggested before posting this message and have gotten the
thing pretty much narrowed down to the rear main seal. Unless it can
leak from somewhere else in back and make a few of us think its the
Rear Main.

Micah, thanks for all the info you put in and you stated that it is a
2 piece seal? Not a one piece? As I stated I have the 90 Wrangler YJ
with the 258 4.2L engine in it and I was talking to a couple auto
parts shops and they kept asking me if it had the 1 or 2 piece seal.
I guess I got confused because to me with that year and engine it
should be pretty straightforward which one it would be. So I need to
look for the FEL-BS13879 part by Fel-Pro. I did a quick search and
that states 2 piece Rear Main Seal application for the AMC/
International/Jeep 196-258 L6 engines.

Now would you have any good instructions or reference to any on the
net to print out while I tackle this fun project. I'm a computer
person that is just getting into this jeep and engine stuff but know
it will save me lots of money if I can do some basic or the easier
stuff than going to the shop all the time.

Thanks.
ndittoo@yahoo.com

NewbieJeepGuy

Thanks all for your help so far. I have replaced the Valve Cover
Gasket as suggested before posting this message and have gotten the
thing pretty much narrowed down to the rear main seal. Unless it can
leak from somewhere else in back and make a few of us think its the
Rear Main.

Micah, thanks for all the info you put in and you stated that it is a
2 piece seal? Not a one piece? As I stated I have the 90 Wrangler YJ
with the 258 4.2L engine in it and I was talking to a couple auto
parts shops and they kept asking me if it had the 1 or 2 piece seal.
I guess I got confused because to me with that year and engine it
should be pretty straightforward which one it would be. So I need to
look for the FEL-BS13879 part by Fel-Pro. I did a quick search and
that states 2 piece Rear Main Seal application for the AMC/
International/Jeep 196-258 L6 engines.

Now would you have any good instructions or reference to any on the
net to print out while I tackle this fun project. I'm a computer
person that is just getting into this jeep and engine stuff but know
it will save me lots of money if I can do some basic or the easier
stuff than going to the shop all the time.

Thanks.
ndittoo@yahoo.com

RoyJ

FWIW: My parts manual for the '90 4.2L clearly shows a 2 piece rear main.

I know everyone has flogged the valve cover fix but most of us have
needed several tries to get it right,and it does mimic a bad rear seal
quite nicely. I power wash the back the engine at the local self serve
car wash, then stuff a paper towel between the engine and the firewall.
Any sign of oil after 30 minutes of driving says you don't have the
valve cover right.

NewbieJeepGuy wrote:

> Thanks all for your help so far. I have replaced the Valve Cover
> Gasket as suggested before posting this message and have gotten the
> thing pretty much narrowed down to the rear main seal. Unless it can
> leak from somewhere else in back and make a few of us think its the
> Rear Main.
>
> Micah, thanks for all the info you put in and you stated that it is a
> 2 piece seal? Not a one piece? As I stated I have the 90 Wrangler YJ
> with the 258 4.2L engine in it and I was talking to a couple auto
> parts shops and they kept asking me if it had the 1 or 2 piece seal.
> I guess I got confused because to me with that year and engine it
> should be pretty straightforward which one it would be. So I need to
> look for the FEL-BS13879 part by Fel-Pro. I did a quick search and
> that states 2 piece Rear Main Seal application for the AMC/
> International/Jeep 196-258 L6 engines.
>
> Now would you have any good instructions or reference to any on the
> net to print out while I tackle this fun project. I'm a computer
> person that is just getting into this jeep and engine stuff but know
> it will save me lots of money if I can do some basic or the easier
> stuff than going to the shop all the time.
>
> Thanks.
> ndittoo@yahoo.com
>

RoyJ

FWIW: My parts manual for the '90 4.2L clearly shows a 2 piece rear main.

I know everyone has flogged the valve cover fix but most of us have
needed several tries to get it right,and it does mimic a bad rear seal
quite nicely. I power wash the back the engine at the local self serve
car wash, then stuff a paper towel between the engine and the firewall.
Any sign of oil after 30 minutes of driving says you don't have the
valve cover right.

NewbieJeepGuy wrote:

> Thanks all for your help so far. I have replaced the Valve Cover
> Gasket as suggested before posting this message and have gotten the
> thing pretty much narrowed down to the rear main seal. Unless it can
> leak from somewhere else in back and make a few of us think its the
> Rear Main.
>
> Micah, thanks for all the info you put in and you stated that it is a
> 2 piece seal? Not a one piece? As I stated I have the 90 Wrangler YJ
> with the 258 4.2L engine in it and I was talking to a couple auto
> parts shops and they kept asking me if it had the 1 or 2 piece seal.
> I guess I got confused because to me with that year and engine it
> should be pretty straightforward which one it would be. So I need to
> look for the FEL-BS13879 part by Fel-Pro. I did a quick search and
> that states 2 piece Rear Main Seal application for the AMC/
> International/Jeep 196-258 L6 engines.
>
> Now would you have any good instructions or reference to any on the
> net to print out while I tackle this fun project. I'm a computer
> person that is just getting into this jeep and engine stuff but know
> it will save me lots of money if I can do some basic or the easier
> stuff than going to the shop all the time.
>
> Thanks.
> ndittoo@yahoo.com
>

RoyJ

FWIW: My parts manual for the '90 4.2L clearly shows a 2 piece rear main.

I know everyone has flogged the valve cover fix but most of us have
needed several tries to get it right,and it does mimic a bad rear seal
quite nicely. I power wash the back the engine at the local self serve
car wash, then stuff a paper towel between the engine and the firewall.
Any sign of oil after 30 minutes of driving says you don't have the
valve cover right.

NewbieJeepGuy wrote:

> Thanks all for your help so far. I have replaced the Valve Cover
> Gasket as suggested before posting this message and have gotten the
> thing pretty much narrowed down to the rear main seal. Unless it can
> leak from somewhere else in back and make a few of us think its the
> Rear Main.
>
> Micah, thanks for all the info you put in and you stated that it is a
> 2 piece seal? Not a one piece? As I stated I have the 90 Wrangler YJ
> with the 258 4.2L engine in it and I was talking to a couple auto
> parts shops and they kept asking me if it had the 1 or 2 piece seal.
> I guess I got confused because to me with that year and engine it
> should be pretty straightforward which one it would be. So I need to
> look for the FEL-BS13879 part by Fel-Pro. I did a quick search and
> that states 2 piece Rear Main Seal application for the AMC/
> International/Jeep 196-258 L6 engines.
>
> Now would you have any good instructions or reference to any on the
> net to print out while I tackle this fun project. I'm a computer
> person that is just getting into this jeep and engine stuff but know
> it will save me lots of money if I can do some basic or the easier
> stuff than going to the shop all the time.
>
> Thanks.
> ndittoo@yahoo.com
>