Why does it take forever to start? - JeepForum.com
 
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post #1 of 15 Old 04-14-2011, 05:27 AM Thread Starter
chatas1
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Why does it take forever to start?

When I go to start my CJ in the morning or when it hasn't run for a few hours it takes forever to start. I have to crank and crank and crank it over until it catches. When it's warm, no problems... I'm about to switch out the carb to a weber but I wanted to understand why before I switch it...

Thanks

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post #2 of 15 Old 04-14-2011, 05:55 AM
george29223
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a TFI Ignition Upgrade will work wonders on cranking
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post #3 of 15 Old 04-14-2011, 06:16 AM
Pacfanweb
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Sounds like maybe the your fuel pump is letting the gas drain back instead of holding some in the line.

OR

You carb is letting gas leak and you have to crank it for awhile to refill the bowl before it'll run.

Doesn't sound like an ignition issue.
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post #4 of 15 Old 04-14-2011, 06:25 AM
twoleos617
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Pac,
fuel pump or filter?
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post #5 of 15 Old 04-14-2011, 06:27 AM
4lowherewego
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do u pump the gas 2-3x's before trying to crank??

79CJ7 360 .030 over, mc2100, T150, Dana20, Trak-Lock'd AMC20, 4" Skyjacker springs, 33" Boggers on aluminum American Racing rims.
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post #6 of 15 Old 04-14-2011, 06:45 AM
MoC
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Timing could be off.
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post #7 of 15 Old 04-14-2011, 07:02 AM
CJ Chet
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Check your fuel filter. Make sure the outlet is at the 12:00 position. Had that problem with mine.

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post #8 of 15 Old 04-14-2011, 07:39 AM
Balvar24
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Choke?
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post #9 of 15 Old 04-14-2011, 08:49 AM
lanecj5
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Ours did the same thing.......Did the mc2150 upgrade..Now;pump it twice and its cranked. Had a carter in it.
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post #10 of 15 Old 04-14-2011, 05:58 PM
Pacfanweb
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Quote:
Originally Posted by twoleos617 View Post
Pac,
fuel pump or filter?
Either.
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post #11 of 15 Old 04-14-2011, 08:01 PM Thread Starter
chatas1
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I'm afraid to pump it more than once before I start it because I flooded it the first time I tried it. I'll check the fuel filter and the timing. Thanks.
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post #12 of 15 Old 04-14-2011, 08:19 PM
mcmud
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Trouble on the cold start and not with the hot would be an indication, to me at least, that the choke setting is a bit too slack or the vacuum pull off diaphragm is in need of attention.
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post #13 of 15 Old 04-14-2011, 09:07 PM
truckshop21
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if you have a 4cly its the fuel filter in the carb that has a check valve probably went bad
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post #14 of 15 Old 04-14-2011, 09:37 PM
jcbjeep
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try new spark plugs
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post #15 of 15 Old 04-14-2011, 10:45 PM
Mickey_D
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It's fuel delivery. Check the choke first.

With the engine stone cold pull the air cleaner top off. Have someone step halfway down on gas pedal and release it while you're looking straight down the throat of the carb. You should see the choke plate open slightly and then drop closed. If it doesn't close, there's your problem.

Next, hold the choke plate open with a screwdriver or something (that won't fall in). Shine a flashlight down the throat and have someone push the pedal down. You should see a squirt of gas. If not, there's your problem.

BTW, most 2bbl and 4bbl carbs on the top of V-8's will take in excess of 10 pumps to flood. My little 4 cylinder takes 4 or 5 pumps to start cold. And mine's on a manual choke.

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