88 4.0 timing is off or weird dist placement??? - Jeep Cherokee Forum
Jeep Cherokee Forum

Go Back   Jeep Cherokee Forum > Technical Discussion > OEM Cherokee Tech
Log In 
Search


88 4.0 timing is off or weird dist placement???

Reply
 
 
 
 
Thread Tools Search this Thread
Old 10-22-2013, 06:37 PM   #1
Newbie
 
Join Date: Oct 2013
Posts: 3

View wildman01's Photo Album My Photos
Cherokee
Question 88 4.0 timing is off or weird dist placement???

88 jeep Cherokee 4.0

I just bought this jeep and i'm going through a few things.

I noticed some black smoke on fast acceleration or just a quick pop to the pedal. To me that is running rich, probably bad fire.... right?

I changed the plugs and they were horrible. Well, I noticed the firing order is correct 153624, but on the distributor the number 1 wire is on the number 3 post. So i changed it to where the number 1 wire is on the bottom right post if you are looking from the passenger fender. Wouldn't start.... Changed it back to how it was... started right up... I guess they jumped timing when whoever rebuilt the motor? I haven't checked TDC yet, but i will tonight... Any suggestions, comments, ideas?
wildman01 is offline   Reply With Quote
Join Cherokee Forum

Join CherokeeForum.com Today - It's Totally Free!

Do you love your Jeep? If so we invite you to join our community and see what it has to offer. Our site is specifically designed for you and it's a great place for Jeep Fans to meet online.
Once you join you'll be able to post messages, upload pictures of your jeep, and have a great time with other Jeep Cherokee fans.. Whether your an old timer or just bought your Jeep you'll find that CherokeeForum.com is a great community to join. Best of all it's totally free!

Join CherokeeForum.com Today! - Click Here JOIN FOR FREE


-->
Old 10-22-2013, 10:04 PM   #2
Newbie
 
Join Date: Oct 2013
Posts: 3

View wildman01's Photo Album My Photos
Cherokee
Default

It is a distrubtor indexing problem??
wildman01 is offline   Reply With Quote
Old 10-22-2013, 10:06 PM   #3
CF Veteran
 
jakbob's Avatar
 
Join Date: Dec 2011
Location: Pasadena, MD
Posts: 4,002

View jakbob's Photo Album My Photos
1987 Wagoneer
Default

Picture?
__________________
1987 Jeep Wagoneer Limited a.k.a. *******' Wagon

^yes, it is in fact a link to my build thread. go ahead, you know you want to...


MD RENIX MAFIA MEMBER #1

Quote:
Originally Posted by cruiser54

You made me open up a service manual!!!
jakbob is offline   Reply With Quote
Old 10-23-2013, 10:21 AM   #4
Member
 
Nick-B's Avatar
 
Join Date: Jun 2011
Location: Key Peninsula, WA
Posts: 158

View Nick-B's Photo Album My Photos
1990 Cherokee
Default

Hi Wildman and Welcome to the Forum.

The number one cause of running rich is a bad vacuum line to the MAP sensor.
That's the line running from the base of the throttle body to the squarish thingy on he firewall (MAP sensor). Check that and all other vacuum lines then report back.
__________________
Regards,
Nick

1990 Cherokee Limited - 4.0 - Power Everything
1997 Grand Cherokee Laredo - 4.0
Nick-B is offline   Reply With Quote
Old 10-23-2013, 02:58 PM   #5
CF Veteran
 
freegdr's Avatar
 
Join Date: Mar 2010
Location: Happyville...
Posts: 32,963

View freegdr's Photo Album My Photos
1989 xj sport 2dr Cherokee
Default

Dist hold down goes in one way no 1 cyl can be any where as long as wires are in correct spot. Being on no3 post means rotors not in correct spot .
__________________
Its all in your altitude,horn broke watch for finger
When asking for help here and not listening to test procedures, why ask?
freegdr is offline   Reply With Quote
Old 10-24-2013, 09:02 AM   #6
Newbie
 
Join Date: Oct 2013
Posts: 3

View wildman01's Photo Album My Photos
Cherokee
Default

I checked vacuum lines.. everything looks good..... explain what you mean by the distb hold down.... the 1 that is marked on the cap is on the bottom right hand corner where it should be... but how can the rotor be in the wrong place? What would have caused that? And what is the fix, or is it fine the way it is as long as it matches up with tdc on cylinder 1???
wildman01 is offline   Reply With Quote
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
o2 sensors EZEARL OEM Cherokee Tech 14 08-23-2015 07:30 PM
Rumble noise at idle Robert Enriquez OEM Cherokee Tech 5 08-05-2015 03:42 AM
Fuel mileage 4.0 dave1123 Grand Cherokee Tech 2 07-29-2015 12:16 PM
To keep or to sell? '93 XJ ecgleaton OEM Cherokee Tech 17 07-27-2015 09:54 PM
1987 Cherokee Cheif Slow Build monst3r Jeep Builds 0 07-26-2015 09:02 PM

Go Back   Jeep Cherokee Forum > Technical Discussion > OEM Cherokee Tech



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 11:08 AM.


This site is in no way affiliated with Jeep or Chrysler.

Emails Backup