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Rough running cj
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CarGuru > Jeep Willys > Rough running cj 12 March 2005 20:22:29

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Rough running cj

Big Don 12 March 2005 06:21:53
 I have a CJ with a 232 motor with a holley 2bbl carb on topm a mister gasket
spacer. the carb is a 280 cfm. It runs rough at low speeds and when cold. it
also misses at all speeds when it rains. I think the rough running is from
a vac leak under the carb. I'm only running a pcv, dist. advance and brake
booster. no canister. I have rebuilt the carb. replaced the head, intake and
exhaust gaskets with fel-pro. Also replaced the cap, rotor,plugs and checked
the wires. plus set the timing. also lapped in the valves and replaced the
seals when the head was off.. AND replaced all connectors on the coil and
starter relay. if it rains for 5 min. I'm done. the jeep will miss to were
it's undrivable. can anyone HELP

thanks
Don


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Mike Romain 12 March 2005 06:32:27 permanent link ]
 I would wait for dark and start it up, open the hood and spray the wires
with water from a mist bottle.

If you have pyrotechnics, you have found the trouble.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Big Don wrote:>
I have a CJ with a 232 motor with a holley 2bbl carb on topm a mister gasket> spacer. the carb is a 280 cfm. It runs rough at low speeds and when cold. it> also misses at all speeds when it rains. I think the rough running is from> a vac leak under the carb. I'm only running a pcv, dist. advance and brake> booster. no canister. I have rebuilt the carb. replaced the head, intake and> exhaust gaskets with fel-pro. Also replaced the cap, rotor,plugs and checked> the wires. plus set the timing. also lapped in the valves and replaced the> seals when the head was off.. AND replaced all connectors on the coil and> starter relay. if it rains for 5 min. I'm done. the jeep will miss to were> it's undrivable. can anyone HELP>
thanks> Don
Add comment
DougW 12 March 2005 09:51:38 permanent link ]
 Big Don did pass the time by typing:> I have a CJ with a 232 motor with a holley 2bbl carb on topm a mister gasket> spacer. the carb is a 280 cfm. It runs rough at low speeds and when cold. it> also misses at all speeds when it rains. I think the rough running is from> a vac leak under the carb. I'm only running a pcv, dist. advance and brake> booster. no canister. I have rebuilt the carb. replaced the head, intake and> exhaust gaskets with fel-pro. Also replaced the cap, rotor,plugs and checked> the wires. plus set the timing. also lapped in the valves and replaced the> seals when the head was off.. AND replaced all connectors on the coil and> starter relay. if it rains for 5 min. I'm done. the jeep will miss to were> it's undrivable. can anyone HELP

Missing when wet is a good sign of electrical problems. How's your engine
ground strap? Try a jumper cable from the block to the frame.

Take some TB/Carb cleaner and spray it around the base of your carb.
If the engine stammers you found a leak.

Don't forget all the other vac lines. Cracks anywhere in the system
will mess up a carbureted engine and cause stammer/rough idle.

Rough idle when cold can be the electric choke if you have one.

--
DougW



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Big Don 12 March 2005 20:22:29 permanent link ]
 Thanks guys. I'll check all tonight

"DougW" <post.replies@inval­id.address> wrote in message
news:JrvYd.7200$ju.­2858@okepread07...> Big Don did pass the time by typing:> > I have a CJ with a 232 motor with a holley 2bbl carb on topm a mister
gasket> > spacer. the carb is a 280 cfm. It runs rough at low speeds and when
cold. it> > also misses at all speeds when it rains. I think the rough running is
from> > a vac leak under the carb. I'm only running a pcv, dist. advance and
brake> > booster. no canister. I have rebuilt the carb. replaced the head, intake
exhaust gaskets with fel-pro. Also replaced the cap, rotor,plugs and
checked> > the wires. plus set the timing. also lapped in the valves and replaced
seals when the head was off.. AND replaced all connectors on the coil
starter relay. if it rains for 5 min. I'm done. the jeep will miss to
were> > it's undrivable. can anyone HELP>
Missing when wet is a good sign of electrical problems. How's your engine> ground strap? Try a jumper cable from the block to the frame.>
Take some TB/Carb cleaner and spray it around the base of your carb.> If the engine stammers you found a leak.>
Don't forget all the other vac lines. Cracks anywhere in the system> will mess up a carbureted engine and cause stammer/rough idle.>
Rough idle when cold can be the electric choke if you have one.>
--> DougW>


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CarGuru > Jeep Willys > Rough running cj 12 March 2005 20:22:29

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