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Discussion Starter · #1 ·
dear jeep friends.

I need help.

I put a 4.2 ltr cherokee engine from 93 in my 91 wrangler.but did not use the injection system.just put I carb on the manifold,but the engine is not running edle,run too rich or too lean.some told me that I have to change the manifold,can anyone help me with advice.:confused:
where I can buy this kit.


kind regards.

overseas jeep freak
 

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Are you sure it was a 4.2? Here the 91-95 were 4.0 in both the Cherokee and YJ. Either way, if you moved over the right parts, the block shouldn't matter. How much vacuum are you pulling at idle?
 

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Discussion Starter · #3 ·
thank you for your reply.
it.s 4.0 high output engine that i used..
but the mainifold is not the same as stock engine,so i cant us the old intake manifold.
 

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The Cherokee 4.0 doesn't really have any more power. Put a vacuum gauge on it and tell us what the reading is. Better yet, a youtube of the vacuum gauge.
 
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