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Discussion Starter #1
I am new to the YJ family, 3 weeks (had a TJ years ago for a while).

How long should the crank time be? I haven't officially timed it, but it seems like mine will often take more than 3 seconds. Just looking for ballpark info if this is totally normal or I should do some digging.

94 6cyl
 

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Welcome to the Forum r3con,

My YJ is too old to compare to your crank time, but other posters with fuel injected 6 cyl. motors should be able to advise you.

Good Luck, L.M.
 

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If the checkvalve in your fuel pump is leaking a little you can have longer crank times... it would be more of a nuisance than a problem... I wouldn't worry too much
 

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Discussion Starter #4
Thanks for the replies, that is kinda what I figured. Going in for a clutch replacement next week, so if there is something I am sure he will upsell me (jk, he is a good guy).
 

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'94 6 cyl here--Mine is maybe 3 sec as well. I will try to check it in AM. 8-10 revolutions maybe?
 

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My 4.0 equipped YJ also takes about three seconds of cranking to start. MY TJ with coil packs starts immediately. All the 4.0 equipped rigs I’ve owned with a distributor have taken longer to start than the distributorless rugs.
 

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Discussion Starter #8
Thanks so much everyone. I use to own a TJ, and remember it starting very very quickly, so that is why this new to me YJ made me question it. Thanks again.
 

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Yj's CAN start quickly.... your fuel is draining back to the tank and it taked a couple seconds to pump it back up and displace the air that gets pulled in
 

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If you just turn the ignition switch to "on" a time or two before you start it, the fuel pump will pressurize the system and it will start right up. Bad check valve.
 

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I'll throw my stats in...
94 YJ I6
Ambient temperature range past few weeks 67-100 (only owned about six weeks)
Cold starts 4-5 revolutions.

John D
 

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I just went out this morning and fired mine up. It hadn't been started in close to a month and took about 1/4 of a second to start ie cha cha cha vroom
 
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