SPONSORED LINKS

Cranks over but wont fire it is blowing back through the intake?

Tiny
ANONYMOUS
  • MEMBER
  • 1999 JEEP GRAND CHEROKEE
  • 101,000 MILES
I have a jeep with a 4.0 that I just installed a used motor in that I got from a yard. The jeep ran when the pulled the motor bot the stripped everything off the motor. So we ended up moving all the parts over. We installed the motor. She cranks over but wont fire it is blowing back through the intake. We reset the NOT distributor like 8 times still no go. Will a bad ground cause it not to fire. Or can the flywheel be installed wrong and make it fire wrong. Lost and have no clue on the problem
SPONSORED LINKS
Wednesday, December 26th, 2012 AT 3:01 PM

1 Reply

Tiny
BORIS K
  • MECHANIC
  • 795 POSTS
Hello,

Please check the distributor installation again.
Ensure that cylinder 1 is on TDC, that is Top Dead Centre.
Remove the distributor and remove the rotor and camshaft position sensor
Align the hole in the plate with the hole in the distributor housing.
Lock the shaft in this position .
Ensure that the oil pump drive is lined up at 11-5 o'clock, see below image.

See below link on how to time the distributor correctly.

https://youtu.be/xRHW0i3V6qM

Once the distributor is installed correctly please ensure that the firing order on the distributor cap is correct. See image below.

Please let us know how you get along.

Cheers, Boris
Images (Click to make bigger)
Thumb
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, August 5th, 2021 AT 3:45 AM

Please login or register to post a reply.

Related Engine Not Running Content

How to fix an engine that wont start
VIDEO
How to fix an engine that wont start
Instructional repair video
Engine Not Starting
GUIDE
Engine Not Starting
Over the past 20 years at 2CarPros we have identified the top problems that are easily fixed. This guide can save you a trip to the repair garage or calling a tow truck and...
VIEW MORE

Sponsored links