My cj7 will not start

So...Last winter my jeep started stalling at different times. It has
the 258 I6 with a weber carb. It was orginally rom califorina. I
started by replacing fuel filter spark plugs pvc valve distbuter cap
and plug wires. When it stalls it is when I'm driving usually
sometimes it stalls at lights. When I'm idling if I keep the rpms up
sometimes that will help.....It might not though its hard to
say....When it stalls sometimes I can just turn it right over, other
times it will just not start and if a wait between 2-20 minutes it will
start sometime in beween this time. The motor just cuts out, it seems
like it is starved of fuel. When I stopped driving it last march it
started this back fire thing(not really a back fire) It was more of a
lost of power, huge lost of power I think the motor was almost stallin
then it would somethings get more fuel and just keep going and I get
power back other times it would stall and I'd have to wait a few to
several minutes before it started. Then I would be back on my way.
The choke doesn't work it doesn't have that high warm up idle anymore.
I've looked at the carb and cannot figure out why it will nit engage.
Recantly I've been trying to get my cj7 back on the rode the only way
it will start is if I put fuel straight into the Carb, but it will not
stay started.
Pls. help I miss my jeep it sucks taking the bus matt

Could have been a few things until you said "it will start is if I put fuel
straight into the Carb". Tells me it is a fuel delivery problem. you never
mentioned if you have tried a new fuel pump. If you have not done so
already I would say start with the fuel pump, if you have already tried that
I would have you try an electric pump next. And a fresh fuel filter is a
given, I would put a new one in regardless of how old your current filter
is.

Give us feedback on what happens.



"wrench" > wrote in message
oups.com...
> So...Last winter my jeep started stalling at different times. It has
> the 258 I6 with a weber carb. It was orginally rom califorina. I
> started by replacing fuel filter spark plugs pvc valve distbuter cap
> and plug wires. When it stalls it is when I'm driving usually
> sometimes it stalls at lights. When I'm idling if I keep the rpms up
> sometimes that will help.....It might not though its hard to
> say....When it stalls sometimes I can just turn it right over, other
> times it will just not start and if a wait between 2-20 minutes it will
> start sometime in beween this time. The motor just cuts out, it seems
> like it is starved of fuel. When I stopped driving it last march it
> started this back fire thing(not really a back fire) It was more of a
> lost of power, huge lost of power I think the motor was almost stallin
> then it would somethings get more fuel and just keep going and I get
> power back other times it would stall and I'd have to wait a few to
> several minutes before it started. Then I would be back on my way.
> The choke doesn't work it doesn't have that high warm up idle anymore.
> I've looked at the carb and cannot figure out why it will nit engage.
> Recantly I've been trying to get my cj7 back on the rode the only way
> it will start is if I put fuel straight into the Carb, but it will not
> stay started.
> Pls. help I miss my jeep it sucks taking the bus matt
>

Several things come to mind.

A couple questions too.

What did you do with the charcoal canister, which is the gas tank vent,
when you swapped carbs? A blocked canister or vent line will cause it
to act like it runs out of gas as you drive along. Let it sit and it
starts back up.

You don't say what year it it, but a bad ignition module can also cause
that. Module usually just cuts out, the vent blocked bogs out like no
gas.

When you changed fuel filters, did you get the new one in upside down by
any chance? The filter has 2 outlets, the center one goes to the carb,
the top one goes to the return line. If the return line isn't at the
top, then gas will syphon back to the tank when it sits making cold
starts a bugger. You need to pour gas in then to start it.

Or all of your symptoms could simply be a hole in the suction side of
the gas lines. I usually find the holes where the steel lines joint the
rubber ones at the back of the frame and at the front. This suction
leak won't drip on the ground until it gets really bad but it will leave
a stain mark on the lines so you can find it.

As far as the carb choke goes, what kind of choke do you have? Is it
electric or mechanical. If electric, I suspect a dirty connection on
it's power plug.

Maybe it's time for a carb kit?

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!
Aug./05 http://www.imagestation.com/album/in...?id=2120343242
(More Off Road album links at bottom of the view page)

wrench wrote:
>
> So...Last winter my jeep started stalling at different times. It has
> the 258 I6 with a weber carb. It was orginally rom califorina. I
> started by replacing fuel filter spark plugs pvc valve distbuter cap
> and plug wires. When it stalls it is when I'm driving usually
> sometimes it stalls at lights. When I'm idling if I keep the rpms up
> sometimes that will help.....It might not though its hard to
> say....When it stalls sometimes I can just turn it right over, other
> times it will just not start and if a wait between 2-20 minutes it will
> start sometime in beween this time. The motor just cuts out, it seems
> like it is starved of fuel. When I stopped driving it last march it
> started this back fire thing(not really a back fire) It was more of a
> lost of power, huge lost of power I think the motor was almost stallin
> then it would somethings get more fuel and just keep going and I get
> power back other times it would stall and I'd have to wait a few to
> several minutes before it started. Then I would be back on my way.
> The choke doesn't work it doesn't have that high warm up idle anymore.
> I've looked at the carb and cannot figure out why it will nit engage.
> Recantly I've been trying to get my cj7 back on the rode the only way
> it will start is if I put fuel straight into the Carb, but it will not
> stay started.
> Pls. help I miss my jeep it sucks taking the bus matt

Matt:

Running only when you slosh fuel down the carb suggests that it is
starving for fuel.

Here's how I'd troubleshoot this -- other, more knowledgeable folk might
approach it differently. Don't start replacing things willy-nilly,
that's just a good way to waste time and money.

Pop open the hood, disconnect the coil (you don't want the engine to run
for this), pull the fuel hose off the pump side of the fuel filter and
put a coffee can under it. Gas should spill out. Crank the engine and
see if you get consistent, healthy spurts of gas. You should see gas
within 10 seconds.

IF YOU DO: There's a problem between the filter and the engine. Bad
filter (BTW, you /do/ have the filter installed with the vent port to
the _top_, right? That's important.) or crap in the carb. Carb rebuild
kits are cheap -- about $25. Pull it apart, clean it well, put it back
together. If doing that is beyond your ken, remanufactured Webber 2BBLs
can be had for around $250, minus a core of about $40. And that way
your high-idle might work again.

IF YOU DON'T:
Take the fuel cap off the tank and try again. If you get gas then the
vent system is plugged. Ask here for details.

IF YOU STILL DON'T:
Bad fuel pump. Pumps for the 258 are cheap, available and easy to
install (unless you're working outside in freezing rain). The hardest
part will be getting the fittings off without destroying the tubing.

If you've got more time than money, try this before you replace the
pump: Disconnect the tank side of the fuel line at the pump and see if
you can get a siphon line attached. If you can get gas then the pump is
bad. Alternately, pull the cap off the tank, put an air line on the
fuel line and see if you can gently blow air back to the tank. If you
can pass air it should pass fuel.


REPLACED PUMP AND STILL NO GAS:
Rusted-out fuel line. Your fuel lines are steel and can rust, although
it isn't all that common. A pinhole will let the pump suck air instead
of fuel. Trace the line back from the pump, down along the inside frame
rail to the cross member near the tank. From there it jumps to the top
of the cross member and crosses over to the left side. Eyeball every
inch you can.

Pinched/cracked rubber tubing. If your lines are original the steel
line dies out near the cross member just forward of the fuel tank. The
line continues on as rubber tubing from there to the fitting at the top
of the tank. When I reassembled my `79 CJ-5 I managed to pinch the fuel
line between the frame and the body and it took me days to figure it
out. A cracked line will let the pump suck air.

Clogged fuel sender. The fuel pickup in the tank is a steel tube that
extends almost to the bottom of the tank. It has a plastic mesh filter
"sock" on it to screen out dirt and rust. If it gets clogged you can't
draw fuel through it. The fix involves dropping the tank and replacing
the fuel sender assembly -- ask here for detail on how to do this.


wrench wrote:
> So...Last winter my jeep started stalling at different times. It has
> the 258 I6 with a weber carb. It was orginally rom califorina. I
> started by replacing fuel filter spark plugs pvc valve distbuter cap
> and plug wires. When it stalls it is when I'm driving usually
> sometimes it stalls at lights. When I'm idling if I keep the rpms up
> sometimes that will help.....It might not though its hard to
> say....When it stalls sometimes I can just turn it right over, other
> times it will just not start and if a wait between 2-20 minutes it will
> start sometime in beween this time. The motor just cuts out, it seems
> like it is starved of fuel. When I stopped driving it last march it
> started this back fire thing(not really a back fire) It was more of a
> lost of power, huge lost of power I think the motor was almost stallin
> then it would somethings get more fuel and just keep going and I get
> power back other times it would stall and I'd have to wait a few to
> several minutes before it started. Then I would be back on my way.
> The choke doesn't work it doesn't have that high warm up idle anymore.
> I've looked at the carb and cannot figure out why it will nit engage.
> Recantly I've been trying to get my cj7 back on the rode the only way
> it will start is if I put fuel straight into the Carb, but it will not
> stay started.
> Pls. help I miss my jeep it sucks taking the bus matt
>

"wrench" > wrote in message
oups.com...
> So...Last winter my jeep started stalling at different times. It has
> the 258 I6 with a weber carb. It was orginally rom califorina. I
> started by replacing fuel filter spark plugs pvc valve distbuter cap
> and plug wires. When it stalls it is when I'm driving usually
> sometimes it stalls at lights. When I'm idling if I keep the rpms up
> sometimes that will help.....


sounds like the classic case of debris in the Weber. There are some fix_its
described several places on the net. One of them involves drilling the
venturi ports (here is a description for cleaning them .,....... but if you
follow this protocol and exchange the piano wire push for drilling slightly
oversized, it is identical to the www sites decribing the over_drilling
procedure).

see at:
http://www.jeeptech.com/wiki/index.php/Engine/Carter

http://www.ultimatejeep.com/Forums/v...c/p=40033.html

Totally different carb. Most folks don't call the stock BBD a Weber
although mine is.....

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!
Aug./05 http://www.imagestation.com/album/in...?id=2120343242
(More Off Road album links at bottom of the view page)

Rod's news wrote:
>
> "wrench" > wrote in message
> oups.com...
> > So...Last winter my jeep started stalling at different times. It has
> > the 258 I6 with a weber carb. It was orginally rom califorina. I
> > started by replacing fuel filter spark plugs pvc valve distbuter cap
> > and plug wires. When it stalls it is when I'm driving usually
> > sometimes it stalls at lights. When I'm idling if I keep the rpms up
> > sometimes that will help.....
>
> sounds like the classic case of debris in the Weber. There are some fix_its
> described several places on the net. One of them involves drilling the
> venturi ports (here is a description for cleaning them .,....... but if you
> follow this protocol and exchange the piano wire push for drilling slightly
> oversized, it is identical to the www sites decribing the over_drilling
> procedure).
>
> see at:
> http://www.jeeptech.com/wiki/index.php/Engine/Carter

"Mike Romain" > wrote in message
...
> Totally different carb.

Really ?????


Most folks don't call the stock BBD a Weber
> although mine is.....

Mine as well.

What IS the carb the guy is referringf to.
>
> 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!
> Aug./05 http://www.imagestation.com/album/in...?id=2120343242
> (More Off Road album links at bottom of the view page)
>
> Rod's news wrote:
>>
>> "wrench" > wrote in message
>> oups.com...
>> > So...Last winter my jeep started stalling at different times. It has
>> > the 258 I6 with a weber carb. It was orginally rom califorina. I
>> > started by replacing fuel filter spark plugs pvc valve distbuter cap
>> > and plug wires. When it stalls it is when I'm driving usually
>> > sometimes it stalls at lights. When I'm idling if I keep the rpms up
>> > sometimes that will help.....
>>
>> sounds like the classic case of debris in the Weber. There are some
>> fix_its
>> described several places on the net. One of them involves drilling the
>> venturi ports (here is a description for cleaning them .,....... but if
>> you
>> follow this protocol and exchange the piano wire push for drilling
>> slightly
>> oversized, it is identical to the www sites decribing the over_drilling
>> procedure).
>>
>> see at:
>> http://www.jeeptech.com/wiki/index.php/Engine/Carter

I see there's many a reference now to, "Carter_Weber_BBD"


"Rod's news" > wrote in message
news:ZaHof.125731$Gd6.123774@pd7tw3no...
>
> "Mike Romain" > wrote in message
> ...
>> Totally different carb.
>
> Really ?????
>
>
> Most folks don't call the stock BBD a Weber
>> although mine is.....
>
> Mine as well.
>
> What IS the carb the guy is referringf to.
>>
>> 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!
>> Aug./05 http://www.imagestation.com/album/in...?id=2120343242
>> (More Off Road album links at bottom of the view page)
>>
>> Rod's news wrote:
>>>
>>> "wrench" > wrote in message
>>> oups.com...
>>> > So...Last winter my jeep started stalling at different times. It has
>>> > the 258 I6 with a weber carb. It was orginally rom califorina. I
>>> > started by replacing fuel filter spark plugs pvc valve distbuter cap
>>> > and plug wires. When it stalls it is when I'm driving usually
>>> > sometimes it stalls at lights. When I'm idling if I keep the rpms up
>>> > sometimes that will help.....
>>>
>>> sounds like the classic case of debris in the Weber. There are some
>>> fix_its
>>> described several places on the net. One of them involves drilling the
>>> venturi ports (here is a description for cleaning them .,....... but if
>>> you
>>> follow this protocol and exchange the piano wire push for drilling
>>> slightly
>>> oversized, it is identical to the www sites decribing the over_drilling
>>> procedure).
>>>
>>> see at:
>>> http://www.jeeptech.com/wiki/index.php/Engine/Carter
>
>

Bingo!

It is 'usually' called a Carter or just a BBD.

The Weber folks talk about is a 32/36 or something like that.

It doesn't have idle tube issues....

Mike

Rod's news wrote:
>
> I see there's many a reference now to, "Carter_Weber_BBD"
>
> "Rod's news" > wrote in message
> news:ZaHof.125731$Gd6.123774@pd7tw3no...
> >
> > "Mike Romain" > wrote in message
> > ...
> >> Totally different carb.
> >
> > Really ?????
> >
> >
> > Most folks don't call the stock BBD a Weber
> >> although mine is.....
> >
> > Mine as well.
> >
> > What IS the carb the guy is referringf to.
> >>
> >> 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!
> >> Aug./05 http://www.imagestation.com/album/in...?id=2120343242
> >> (More Off Road album links at bottom of the view page)
> >>
> >> Rod's news wrote:
> >>>
> >>> "wrench" > wrote in message
> >>> oups.com...
> >>> > So...Last winter my jeep started stalling at different times. It has
> >>> > the 258 I6 with a weber carb. It was orginally rom califorina. I
> >>> > started by replacing fuel filter spark plugs pvc valve distbuter cap
> >>> > and plug wires. When it stalls it is when I'm driving usually
> >>> > sometimes it stalls at lights. When I'm idling if I keep the rpms up
> >>> > sometimes that will help.....
> >>>
> >>> sounds like the classic case of debris in the Weber. There are some
> >>> fix_its
> >>> described several places on the net. One of them involves drilling the
> >>> venturi ports (here is a description for cleaning them .,....... but if
> >>> you
> >>> follow this protocol and exchange the piano wire push for drilling
> >>> slightly
> >>> oversized, it is identical to the www sites decribing the over_drilling
> >>> procedure).
> >>>
> >>> see at:
> >>> http://www.jeeptech.com/wiki/index.php/Engine/Carter
> >
> >