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-   -   Rebuilt engine wont start (https://www.cherokeeforum.com/f2/rebuilt-engine-wont-start-153161/)

Franker11 10-30-2012 07:37 PM
Rebuilt engine wont start
 
I just installed a rebuilt 4.0 inline 6 in my 2000 jeep cherokee. And it wont start at all. It makes loud pops and sometimes there is a small amount of flames that comes out by the engine. What did I do to cause this?

milehigh94xj 10-30-2012 07:59 PM
Originally Posted by Franker11
I just installed a rebuilt 4.0 inline 6 in my 2000 jeep cherokee. And it wont start at all. It makes loud pops and sometimes there is a small amount of flames that comes out by the engine. What did I do to cause this?
Sound like a timing problem

freegdr 10-30-2012 08:02 PM
When you installed timing chain with marks pointing towards each other was dist installed with rotor pointing to number 1 on cap?

Franker11 10-30-2012 08:22 PM
Its distributorless. But piston 1 was at top dead center and I lined up the ring thing on the camshaft position sensor.

Franker11 10-30-2012 08:34 PM
i can double check it but im pretty sure the camshaft position sensor is in right

milehigh94xj 10-30-2012 10:04 PM
Flames out of throttle body? I would check timing again. I rebuilt my engine year ago and I used the 183k mile harmonic balancer that didn't give the correct timing...

milehigh94xj 10-30-2012 10:06 PM
Originally Posted by milehigh94xj
Flames out of throttle body? I would check timing again. I rebuilt my engine year ago and I used the 183k mile harmonic balancer that didn't give the correct timing...
Was a pita to figure that it was wrong

freegdr 10-31-2012 04:37 AM
Originally Posted by Franker11 (Post 2105070)
Its distributorless. But piston 1 was at top dead center and I lined up the ring thing on the camshaft position sensor.
Top dead center compression stroke correct ?

Franker11 10-31-2012 07:50 AM
How do I figure out if its correct?

cruiser54 10-31-2012 05:45 PM
Setting Your 4.0 at #1 TDC
　
With #1 spark plug removed, turn the engine over clockwise using the 3/4" front crankshaft bolt. You will see the degree marks on your front cover. You will see the timing mark on the balancer. Mark them with chalk or white-out. While turning the engine over, put your finger/thumb over #1 spark plug hole. As the mark on the balancer approaches the marks on the front cover, if you are coming up on #1 TDC, pressure in the cylinder will push on your finger. If there's no pressure, you're at #6 TDC and need to crank the engine over until you see the marks coming together and you get pressure. Set the mark on the balancer to the 0 mark on the front cover.

freegdr 10-31-2012 06:13 PM
Originally Posted by Franker11 (Post 2105789)
How do I figure out if its correct?
Bingo ....


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