I would leaning more towards bad spark plugs, maybe the coil or
brain box firing them. That's only thing that just shuts the engine off
and back on instantly to bang your drive train. Could be that infamous
ground strap, Mike keeps harping about. ;-)
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

CRWLR wrote:
>
> I KNEW you were gonna say that!
>
> I took the cap off the other day, and still had the trouble. I can't say
> that the trouble was better or worse, but it was still present. The one-way
> on the cap itself seems to be OK, I can suck air in through it, but I can
> not blow air out. One of the tests they do at the Smog Station is to make
> sure that fumes don't escape, and it passed that test. (that would be the
> blowing test that I performed.)
>
> The canister is a whole new arena for me. It does go swimming from time to
> time, and mud could have clogged any filter that lives inside. Having said
> that, I did not have the hose from the canister to the tank until I went to
> the Smog Station last week. The Smog Cop noticed that the hose was not
> there, but the same Smog Cop has tested it twice before and the hose was
> missing then too. At any rate, he made me put the hose on. While attaching
> the hose, I noticed that the Roll Over Check Valve and the check valve that
> is on the vapor hose going to the canister both look pretty cruddy. The Roll
> Over Check Valve has hoses on it that go directly to the gas tank, and the
> actually have gas in them, not vapors. I don't know how they are plumbed
> relative to where the fuel pump is, or the fuel pick up. If the Roll Over
> Check Valve was stuck half open, or half closed, would it give me the grief
> that I am having?

 

I had my start solenoid fail on my years ago. Internal post or something
was loose. I'd tap a bump on the road or be making a right turn and the
engine would drop dead. Come to a stop. Turn the key. Everything fine
until the next time. Changed part, never happened again. Sorry, I haven't
looked to see what year, etc. you have, but mine is '75 CJ5 258.

Paul
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:406B61C5.ED1A68AE@***.net...
> I would leaning more towards bad spark plugs, maybe the coil or
> brain box firing them. That's only thing that just shuts the engine off
> and back on instantly to bang your drive train. Could be that infamous
> ground strap, Mike keeps harping about. ;-)
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> CRWLR wrote:
> >
> > I KNEW you were gonna say that!
> >
> > I took the cap off the other day, and still had the trouble. I can't say
> > that the trouble was better or worse, but it was still present. The
one-way
> > on the cap itself seems to be OK, I can suck air in through it, but I
can
> > not blow air out. One of the tests they do at the Smog Station is to
make
> > sure that fumes don't escape, and it passed that test. (that would be
the
> > blowing test that I performed.)
> >
> > The canister is a whole new arena for me. It does go swimming from time
to
> > time, and mud could have clogged any filter that lives inside. Having
said
> > that, I did not have the hose from the canister to the tank until I went
to
> > the Smog Station last week. The Smog Cop noticed that the hose was not
> > there, but the same Smog Cop has tested it twice before and the hose was
> > missing then too. At any rate, he made me put the hose on. While
attaching
> > the hose, I noticed that the Roll Over Check Valve and the check valve
that
> > is on the vapor hose going to the canister both look pretty cruddy. The
Roll
> > Over Check Valve has hoses on it that go directly to the gas tank, and
the
> > actually have gas in them, not vapors. I don't know how they are plumbed
> > relative to where the fuel pump is, or the fuel pick up. If the Roll
Over
> > Check Valve was stuck half open, or half closed, would it give me the
grief
> > that I am having?

 

I had my start solenoid fail on my years ago. Internal post or something
was loose. I'd tap a bump on the road or be making a right turn and the
engine would drop dead. Come to a stop. Turn the key. Everything fine
until the next time. Changed part, never happened again. Sorry, I haven't
looked to see what year, etc. you have, but mine is '75 CJ5 258.

Paul
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:406B61C5.ED1A68AE@***.net...
> I would leaning more towards bad spark plugs, maybe the coil or
> brain box firing them. That's only thing that just shuts the engine off
> and back on instantly to bang your drive train. Could be that infamous
> ground strap, Mike keeps harping about. ;-)
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> CRWLR wrote:
> >
> > I KNEW you were gonna say that!
> >
> > I took the cap off the other day, and still had the trouble. I can't say
> > that the trouble was better or worse, but it was still present. The
one-way
> > on the cap itself seems to be OK, I can suck air in through it, but I
can
> > not blow air out. One of the tests they do at the Smog Station is to
make
> > sure that fumes don't escape, and it passed that test. (that would be
the
> > blowing test that I performed.)
> >
> > The canister is a whole new arena for me. It does go swimming from time
to
> > time, and mud could have clogged any filter that lives inside. Having
said
> > that, I did not have the hose from the canister to the tank until I went
to
> > the Smog Station last week. The Smog Cop noticed that the hose was not
> > there, but the same Smog Cop has tested it twice before and the hose was
> > missing then too. At any rate, he made me put the hose on. While
attaching
> > the hose, I noticed that the Roll Over Check Valve and the check valve
that
> > is on the vapor hose going to the canister both look pretty cruddy. The
Roll
> > Over Check Valve has hoses on it that go directly to the gas tank, and
the
> > actually have gas in them, not vapors. I don't know how they are plumbed
> > relative to where the fuel pump is, or the fuel pick up. If the Roll
Over
> > Check Valve was stuck half open, or half closed, would it give me the
grief
> > that I am having?

 

I had my start solenoid fail on my years ago. Internal post or something
was loose. I'd tap a bump on the road or be making a right turn and the
engine would drop dead. Come to a stop. Turn the key. Everything fine
until the next time. Changed part, never happened again. Sorry, I haven't
looked to see what year, etc. you have, but mine is '75 CJ5 258.

Paul
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:406B61C5.ED1A68AE@***.net...
> I would leaning more towards bad spark plugs, maybe the coil or
> brain box firing them. That's only thing that just shuts the engine off
> and back on instantly to bang your drive train. Could be that infamous
> ground strap, Mike keeps harping about. ;-)
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> CRWLR wrote:
> >
> > I KNEW you were gonna say that!
> >
> > I took the cap off the other day, and still had the trouble. I can't say
> > that the trouble was better or worse, but it was still present. The
one-way
> > on the cap itself seems to be OK, I can suck air in through it, but I
can
> > not blow air out. One of the tests they do at the Smog Station is to
make
> > sure that fumes don't escape, and it passed that test. (that would be
the
> > blowing test that I performed.)
> >
> > The canister is a whole new arena for me. It does go swimming from time
to
> > time, and mud could have clogged any filter that lives inside. Having
said
> > that, I did not have the hose from the canister to the tank until I went
to
> > the Smog Station last week. The Smog Cop noticed that the hose was not
> > there, but the same Smog Cop has tested it twice before and the hose was
> > missing then too. At any rate, he made me put the hose on. While
attaching
> > the hose, I noticed that the Roll Over Check Valve and the check valve
that
> > is on the vapor hose going to the canister both look pretty cruddy. The
Roll
> > Over Check Valve has hoses on it that go directly to the gas tank, and
the
> > actually have gas in them, not vapors. I don't know how they are plumbed
> > relative to where the fuel pump is, or the fuel pick up. If the Roll
Over
> > Check Valve was stuck half open, or half closed, would it give me the
grief
> > that I am having?

 

I had my start solenoid fail on my years ago. Internal post or something
was loose. I'd tap a bump on the road or be making a right turn and the
engine would drop dead. Come to a stop. Turn the key. Everything fine
until the next time. Changed part, never happened again. Sorry, I haven't
looked to see what year, etc. you have, but mine is '75 CJ5 258.

Paul
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:406B61C5.ED1A68AE@***.net...
> I would leaning more towards bad spark plugs, maybe the coil or
> brain box firing them. That's only thing that just shuts the engine off
> and back on instantly to bang your drive train. Could be that infamous
> ground strap, Mike keeps harping about. ;-)
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> CRWLR wrote:
> >
> > I KNEW you were gonna say that!
> >
> > I took the cap off the other day, and still had the trouble. I can't say
> > that the trouble was better or worse, but it was still present. The
one-way
> > on the cap itself seems to be OK, I can suck air in through it, but I
can
> > not blow air out. One of the tests they do at the Smog Station is to
make
> > sure that fumes don't escape, and it passed that test. (that would be
the
> > blowing test that I performed.)
> >
> > The canister is a whole new arena for me. It does go swimming from time
to
> > time, and mud could have clogged any filter that lives inside. Having
said
> > that, I did not have the hose from the canister to the tank until I went
to
> > the Smog Station last week. The Smog Cop noticed that the hose was not
> > there, but the same Smog Cop has tested it twice before and the hose was
> > missing then too. At any rate, he made me put the hose on. While
attaching
> > the hose, I noticed that the Roll Over Check Valve and the check valve
that
> > is on the vapor hose going to the canister both look pretty cruddy. The
Roll
> > Over Check Valve has hoses on it that go directly to the gas tank, and
the
> > actually have gas in them, not vapors. I don't know how they are plumbed
> > relative to where the fuel pump is, or the fuel pick up. If the Roll
Over
> > Check Valve was stuck half open, or half closed, would it give me the
grief
> > that I am having?

 

That would be hard to trace. This reminds me I've had many
alternators come apart and would intermittently short and kill the
ignition.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Paul Brogren wrote:
>
> I had my start solenoid fail on my years ago. Internal post or something
> was loose. I'd tap a bump on the road or be making a right turn and the
> engine would drop dead. Come to a stop. Turn the key. Everything fine
> until the next time. Changed part, never happened again. Sorry, I haven't
> looked to see what year, etc. you have, but mine is '75 CJ5 258.
>
> Paul

 

That would be hard to trace. This reminds me I've had many
alternators come apart and would intermittently short and kill the
ignition.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Paul Brogren wrote:
>
> I had my start solenoid fail on my years ago. Internal post or something
> was loose. I'd tap a bump on the road or be making a right turn and the
> engine would drop dead. Come to a stop. Turn the key. Everything fine
> until the next time. Changed part, never happened again. Sorry, I haven't
> looked to see what year, etc. you have, but mine is '75 CJ5 258.
>
> Paul

 

That would be hard to trace. This reminds me I've had many
alternators come apart and would intermittently short and kill the
ignition.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Paul Brogren wrote:
>
> I had my start solenoid fail on my years ago. Internal post or something
> was loose. I'd tap a bump on the road or be making a right turn and the
> engine would drop dead. Come to a stop. Turn the key. Everything fine
> until the next time. Changed part, never happened again. Sorry, I haven't
> looked to see what year, etc. you have, but mine is '75 CJ5 258.
>
> Paul

 

That would be hard to trace. This reminds me I've had many
alternators come apart and would intermittently short and kill the
ignition.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Paul Brogren wrote:
>
> I had my start solenoid fail on my years ago. Internal post or something
> was loose. I'd tap a bump on the road or be making a right turn and the
> engine would drop dead. Come to a stop. Turn the key. Everything fine
> until the next time. Changed part, never happened again. Sorry, I haven't
> looked to see what year, etc. you have, but mine is '75 CJ5 258.
>
> Paul

 

"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:406B61C5.ED1A68AE@***.net...
> I would leaning more towards bad spark plugs, maybe the coil or
> brain box firing them. That's only thing that just shuts the engine off
> and back on instantly to bang your drive train. Could be that infamous
> ground strap, Mike keeps harping about. ;-)

I had thought of that (ground strap) as well. I will have to look closely at
that.



> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> CRWLR wrote:
> >
> > I KNEW you were gonna say that!
> >
> > I took the cap off the other day, and still had the trouble. I can't say
> > that the trouble was better or worse, but it was still present. The
one-way
> > on the cap itself seems to be OK, I can suck air in through it, but I
can
> > not blow air out. One of the tests they do at the Smog Station is to
make
> > sure that fumes don't escape, and it passed that test. (that would be
the
> > blowing test that I performed.)
> >
> > The canister is a whole new arena for me. It does go swimming from time
to
> > time, and mud could have clogged any filter that lives inside. Having
said
> > that, I did not have the hose from the canister to the tank until I went
to
> > the Smog Station last week. The Smog Cop noticed that the hose was not
> > there, but the same Smog Cop has tested it twice before and the hose was
> > missing then too. At any rate, he made me put the hose on. While
attaching
> > the hose, I noticed that the Roll Over Check Valve and the check valve
that
> > is on the vapor hose going to the canister both look pretty cruddy. The
Roll
> > Over Check Valve has hoses on it that go directly to the gas tank, and
the
> > actually have gas in them, not vapors. I don't know how they are plumbed
> > relative to where the fuel pump is, or the fuel pick up. If the Roll
Over
> > Check Valve was stuck half open, or half closed, would it give me the
grief
> > that I am having?