Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

Never starts on the first crank

Thread Tools
 
Search this Thread
 
Old 06-27-2013, 08:42 PM
  #1  
Seasoned Member
Thread Starter
 
pdowty68's Avatar
 
Join Date: Oct 2012
Location: Long Island, New York
Posts: 486
Likes: 0
Received 2 Likes on 2 Posts
Year: 1996
Model: Cherokee
Engine: 4.0L I6 (The best engine ever made)
Default Never starts on the first crank

My Xj never starts on the first crank, no matter how long I crank, the second crank fires it right up. It's kind of embarrassing... I hear it can be leaky injectors?
Any ideas?
Thanks!
Old 06-27-2013, 08:56 PM
  #2  
CF Veteran
 
VTJeep's Avatar
 
Join Date: Jul 2010
Location: 802
Posts: 4,930
Likes: 0
Received 3 Likes on 3 Posts
Year: 99
Model: Cherokee
Engine: 4.0
Default

huh.. for ****s i always like to say throw it on a code reader to see if it gives you some direction. maybe a tune up is in order. how is your battery, alt., and starter? all check out for voltage? clean the battery leads, ground wires, check TB condition. TPS, IAC valve, o2 sensors, etc. can all contribute.. as for leaky injectors, idk specifically.. sorry.
Old 06-27-2013, 09:31 PM
  #3  
Seasoned Member
 
Potatowalker's Avatar
 
Join Date: Oct 2010
Location: Colorado Rocky Mountains
Posts: 486
Likes: 0
Received 2 Likes on 2 Posts
Year: 1999
Model: Cherokee
Engine: 4.0 I6
Default

try just turning the key to the "on" position a few times so you hear the fuel pump come on. Don't turn it to "start" and let it crank until the 3rd or 4th time. This is the "poor man's prime". I had the same symptom on my 96XJ and it was the check valve in my fuel pump assembly (in the tank). The fuel pressure would bleed off after it sat for more than a few hours and then it would be difficult to start and wouldn't start first-try at all unless I "primed" it a few times to get the pressure back up. If this is your problem, it will help until either the pump fails outright or you replace the defective part. I replaced the whole assembly with sending unit and all and it's started first try ever since.

If the "poor man's prime" doesn't help, then it's probably something electrical in my experience, like plugs or sensors or wiring issues. It could be leaky injectors, but that would lead to a fuel-rich-start and the poor man's prime would not help. Basically it could be a lot of things so you have to narrow it down a little and this is how I'd start.
Old 06-27-2013, 09:45 PM
  #4  
Seasoned Member
 
MtnHermit's Avatar
 
Join Date: Dec 2009
Location: Colorado
Posts: 387
Received 2 Likes on 2 Posts
Year: 1997
Model: Cherokee
Default

Originally Posted by Potatowalker
try just turning the key to the "on" position a few times so you hear the fuel pump come on. Don't turn it to "start" and let it crank until the 3rd or 4th time. This is the "poor man's prime".
Yep, PMP. I've learned to live with it, now part of my starting routine.
Old 06-27-2013, 10:08 PM
  #5  
Junior Member
 
Glockmeister's Avatar
 
Join Date: Feb 2011
Posts: 78
Likes: 0
Received 0 Likes on 0 Posts
Model: Cherokee
Default

I have been doing the pmp for years. Starts everytime.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
clark40
Modified XJ Cherokee Tech
7
08-28-2015 03:08 PM
clark40
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
1
08-28-2015 07:11 AM
Hollerhunteradkins
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
9
08-26-2015 08:27 AM
smithj
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
0
08-23-2015 12:14 PM
CCKen
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
3
08-20-2015 08:07 PM

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


Quick Reply: Never starts on the first crank



All times are GMT -5. The time now is 10:00 PM.