Spdloader wrote:

> Did you replace the plug wires?
> Spdloader
>
>

Good catch.

tw

 

On Sep 6, 9:08 pm, twaldron <d...@hairsproutingbunions.com> wrote:
> Shadow wrote:
> > I have an 85 CJ7 that has developed a nasty habit of missing extremely
> > bad at highway speeds or when pulling a utility trailer (when the
> > engine is hot). I have replaced the plugs, coil, dist. cap & rotor,
> > and control module - all of which produced nothing except a much
> > lighter wallet. The fuel filter is only about 1 year old.
>
> > NOW for the manifold leak. It has had an exhaust manifold leak for
> > some time (I know I need to address that issue also). The issue
> > (missing) started after I drove the jeep 6 hours to the beach, (so I
> > could run it on the sand) all week at the beach, and did not have a
> > problem - until 30 minutes into the return trip. It seemed as soon as
> > I let the engine cool off, I could go about 60 miles until it started
> > acting up. Since then it has gotten much worse. I can drive it around
> > town and it seems OK until I hit the highway.
>
> > All of this said I started thinking that I might have a burnt valve
> > caused by the manifold leak, but I wanted some other opinions before I
> > pulled the head.
>
> > Any help would be great, because I would really like to get the "Green
> > Goblin" back on the road.
> > Thanks.
>
> How's your timing chain?
>
> tw- Hide quoted text -
>
> - Show quoted text -

As far as the timing chain is concerned - I have not a clue. Is this
something I should check out?

 

On Sep 6, 9:08 pm, twaldron <d...@hairsproutingbunions.com> wrote:
> Shadow wrote:
> > I have an 85 CJ7 that has developed a nasty habit of missing extremely
> > bad at highway speeds or when pulling a utility trailer (when the
> > engine is hot). I have replaced the plugs, coil, dist. cap & rotor,
> > and control module - all of which produced nothing except a much
> > lighter wallet. The fuel filter is only about 1 year old.
>
> > NOW for the manifold leak. It has had an exhaust manifold leak for
> > some time (I know I need to address that issue also). The issue
> > (missing) started after I drove the jeep 6 hours to the beach, (so I
> > could run it on the sand) all week at the beach, and did not have a
> > problem - until 30 minutes into the return trip. It seemed as soon as
> > I let the engine cool off, I could go about 60 miles until it started
> > acting up. Since then it has gotten much worse. I can drive it around
> > town and it seems OK until I hit the highway.
>
> > All of this said I started thinking that I might have a burnt valve
> > caused by the manifold leak, but I wanted some other opinions before I
> > pulled the head.
>
> > Any help would be great, because I would really like to get the "Green
> > Goblin" back on the road.
> > Thanks.
>
> How's your timing chain?
>
> tw- Hide quoted text -
>
> - Show quoted text -

As far as the timing chain is concerned - I have not a clue. Is this
something I should check out?

 

On Sep 6, 9:08 pm, twaldron <d...@hairsproutingbunions.com> wrote:
> Shadow wrote:
> > I have an 85 CJ7 that has developed a nasty habit of missing extremely
> > bad at highway speeds or when pulling a utility trailer (when the
> > engine is hot). I have replaced the plugs, coil, dist. cap & rotor,
> > and control module - all of which produced nothing except a much
> > lighter wallet. The fuel filter is only about 1 year old.
>
> > NOW for the manifold leak. It has had an exhaust manifold leak for
> > some time (I know I need to address that issue also). The issue
> > (missing) started after I drove the jeep 6 hours to the beach, (so I
> > could run it on the sand) all week at the beach, and did not have a
> > problem - until 30 minutes into the return trip. It seemed as soon as
> > I let the engine cool off, I could go about 60 miles until it started
> > acting up. Since then it has gotten much worse. I can drive it around
> > town and it seems OK until I hit the highway.
>
> > All of this said I started thinking that I might have a burnt valve
> > caused by the manifold leak, but I wanted some other opinions before I
> > pulled the head.
>
> > Any help would be great, because I would really like to get the "Green
> > Goblin" back on the road.
> > Thanks.
>
> How's your timing chain?
>
> tw- Hide quoted text -
>
> - Show quoted text -

As far as the timing chain is concerned - I have not a clue. Is this
something I should check out?

 

On Sep 6, 9:08 pm, twaldron <d...@hairsproutingbunions.com> wrote:
> Shadow wrote:
> > I have an 85 CJ7 that has developed a nasty habit of missing extremely
> > bad at highway speeds or when pulling a utility trailer (when the
> > engine is hot). I have replaced the plugs, coil, dist. cap & rotor,
> > and control module - all of which produced nothing except a much
> > lighter wallet. The fuel filter is only about 1 year old.
>
> > NOW for the manifold leak. It has had an exhaust manifold leak for
> > some time (I know I need to address that issue also). The issue
> > (missing) started after I drove the jeep 6 hours to the beach, (so I
> > could run it on the sand) all week at the beach, and did not have a
> > problem - until 30 minutes into the return trip. It seemed as soon as
> > I let the engine cool off, I could go about 60 miles until it started
> > acting up. Since then it has gotten much worse. I can drive it around
> > town and it seems OK until I hit the highway.
>
> > All of this said I started thinking that I might have a burnt valve
> > caused by the manifold leak, but I wanted some other opinions before I
> > pulled the head.
>
> > Any help would be great, because I would really like to get the "Green
> > Goblin" back on the road.
> > Thanks.
>
> How's your timing chain?
>
> tw- Hide quoted text -
>
> - Show quoted text -

As far as the timing chain is concerned - I have not a clue. Is this
something I should check out?

 

On Sep 6, 9:18 pm, "Spdloader" <askfo...@nospam.triad.rr.com> wrote:
> "Shadow" <timstephen...@bellsouth.net> wrote in message
>
> news:1189125658.835943.311810@22g2000hsm.googlegro ups.com...
>
>
>
>
>
> >I have an 85 CJ7 that has developed a nasty habit of missing extremely
> > bad at highway speeds or when pulling a utility trailer (when the
> > engine is hot). I have replaced the plugs, coil, dist. cap & rotor,
> > and control module - all of which produced nothing except a much
> > lighter wallet. The fuel filter is only about 1 year old.
>
> > NOW for the manifold leak. It has had an exhaust manifold leak for
> > some time (I know I need to address that issue also). The issue
> > (missing) started after I drove the jeep 6 hours to the beach, (so I
> > could run it on the sand) all week at the beach, and did not have a
> > problem - until 30 minutes into the return trip. It seemed as soon as
> > I let the engine cool off, I could go about 60 miles until it started
> > acting up. Since then it has gotten much worse. I can drive it around
> > town and it seems OK until I hit the highway.
>
> > All of this said I started thinking that I might have a burnt valve
> > caused by the manifold leak, but I wanted some other opinions before I
> > pulled the head.
>
> > Any help would be great, because I would really like to get the "Green
> > Goblin" back on the road.
> > Thanks.
>
> Did you replace the plug wires?
> Spdloader- Hide quoted text -
>
> - Show quoted text -

Yes,when I replaced the plugs - forgot to mention ;)

 

On Sep 6, 9:18 pm, "Spdloader" <askfo...@nospam.triad.rr.com> wrote:
> "Shadow" <timstephen...@bellsouth.net> wrote in message
>
> news:1189125658.835943.311810@22g2000hsm.googlegro ups.com...
>
>
>
>
>
> >I have an 85 CJ7 that has developed a nasty habit of missing extremely
> > bad at highway speeds or when pulling a utility trailer (when the
> > engine is hot). I have replaced the plugs, coil, dist. cap & rotor,
> > and control module - all of which produced nothing except a much
> > lighter wallet. The fuel filter is only about 1 year old.
>
> > NOW for the manifold leak. It has had an exhaust manifold leak for
> > some time (I know I need to address that issue also). The issue
> > (missing) started after I drove the jeep 6 hours to the beach, (so I
> > could run it on the sand) all week at the beach, and did not have a
> > problem - until 30 minutes into the return trip. It seemed as soon as
> > I let the engine cool off, I could go about 60 miles until it started
> > acting up. Since then it has gotten much worse. I can drive it around
> > town and it seems OK until I hit the highway.
>
> > All of this said I started thinking that I might have a burnt valve
> > caused by the manifold leak, but I wanted some other opinions before I
> > pulled the head.
>
> > Any help would be great, because I would really like to get the "Green
> > Goblin" back on the road.
> > Thanks.
>
> Did you replace the plug wires?
> Spdloader- Hide quoted text -
>
> - Show quoted text -

Yes,when I replaced the plugs - forgot to mention ;)

 

On Sep 6, 9:18 pm, "Spdloader" <askfo...@nospam.triad.rr.com> wrote:
> "Shadow" <timstephen...@bellsouth.net> wrote in message
>
> news:1189125658.835943.311810@22g2000hsm.googlegro ups.com...
>
>
>
>
>
> >I have an 85 CJ7 that has developed a nasty habit of missing extremely
> > bad at highway speeds or when pulling a utility trailer (when the
> > engine is hot). I have replaced the plugs, coil, dist. cap & rotor,
> > and control module - all of which produced nothing except a much
> > lighter wallet. The fuel filter is only about 1 year old.
>
> > NOW for the manifold leak. It has had an exhaust manifold leak for
> > some time (I know I need to address that issue also). The issue
> > (missing) started after I drove the jeep 6 hours to the beach, (so I
> > could run it on the sand) all week at the beach, and did not have a
> > problem - until 30 minutes into the return trip. It seemed as soon as
> > I let the engine cool off, I could go about 60 miles until it started
> > acting up. Since then it has gotten much worse. I can drive it around
> > town and it seems OK until I hit the highway.
>
> > All of this said I started thinking that I might have a burnt valve
> > caused by the manifold leak, but I wanted some other opinions before I
> > pulled the head.
>
> > Any help would be great, because I would really like to get the "Green
> > Goblin" back on the road.
> > Thanks.
>
> Did you replace the plug wires?
> Spdloader- Hide quoted text -
>
> - Show quoted text -

Yes,when I replaced the plugs - forgot to mention ;)

 

On Sep 6, 9:18 pm, "Spdloader" <askfo...@nospam.triad.rr.com> wrote:
> "Shadow" <timstephen...@bellsouth.net> wrote in message
>
> news:1189125658.835943.311810@22g2000hsm.googlegro ups.com...
>
>
>
>
>
> >I have an 85 CJ7 that has developed a nasty habit of missing extremely
> > bad at highway speeds or when pulling a utility trailer (when the
> > engine is hot). I have replaced the plugs, coil, dist. cap & rotor,
> > and control module - all of which produced nothing except a much
> > lighter wallet. The fuel filter is only about 1 year old.
>
> > NOW for the manifold leak. It has had an exhaust manifold leak for
> > some time (I know I need to address that issue also). The issue
> > (missing) started after I drove the jeep 6 hours to the beach, (so I
> > could run it on the sand) all week at the beach, and did not have a
> > problem - until 30 minutes into the return trip. It seemed as soon as
> > I let the engine cool off, I could go about 60 miles until it started
> > acting up. Since then it has gotten much worse. I can drive it around
> > town and it seems OK until I hit the highway.
>
> > All of this said I started thinking that I might have a burnt valve
> > caused by the manifold leak, but I wanted some other opinions before I
> > pulled the head.
>
> > Any help would be great, because I would really like to get the "Green
> > Goblin" back on the road.
> > Thanks.
>
> Did you replace the plug wires?
> Spdloader- Hide quoted text -
>
> - Show quoted text -

Yes,when I replaced the plugs - forgot to mention ;)

 

Shadow wrote:
> I have an 85 CJ7 that has developed a nasty habit of missing extremely
> bad at highway speeds or when pulling a utility trailer (when the
> engine is hot). I have replaced the plugs, coil, dist. cap & rotor,
> and control module - all of which produced nothing except a much
> lighter wallet. The fuel filter is only about 1 year old.
>
> NOW for the manifold leak. It has had an exhaust manifold leak for
> some time (I know I need to address that issue also). The issue
> (missing) started after I drove the jeep 6 hours to the beach, (so I
> could run it on the sand) all week at the beach, and did not have a
> problem - until 30 minutes into the return trip. It seemed as soon as
> I let the engine cool off, I could go about 60 miles until it started
> acting up. Since then it has gotten much worse. I can drive it around
> town and it seems OK until I hit the highway.
>
> All of this said I started thinking that I might have a burnt valve
> caused by the manifold leak, but I wanted some other opinions before I
> pulled the head.
>
> Any help would be great, because I would really like to get the "Green
> Goblin" back on the road.
> Thanks.
>


Possibly you are running very lean. The plug condition can tell you a
lot when you take them out. Under ideal circumstances, your plugs should
be colored a light tan color. If they are perfectly white, and/or have
little silver specks on them, your engine is running extremely lean.

This could be caused from low fuel pressure, low float level, or
possibly something getting plugged up in the carb.

One other thing. If you haven't done it yet, you might want to look in
to doing the Nutter Bypass. It will improve things very nicely.

Here is the how-to article:
http://www.4x4wire.com/jeep/tech/ele...jn-ignition99/

Chris