Has spark has gas won't start - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 01-10-2011, 07:45 PM   #1
Newb
 
Join Date: Sep 2009
Posts: 9
Has spark has gas won't start

I have a 1990 YJ 2.5. Here is what happened. My exhaust pipe worked it's way loose from the manifold. I drove it like this for a couple of days (out of necessity) before I parked it. About 3-4 days later, I went out and tightened up the bolts where the pipe goes into the manifold and now it won't start. It will start up for about 2 seconds and then die. After that, it will crank but won't start. If it sits for about 20 minutes, it will start for 2 seconds then die and won't start back up. There is also a PSSSSSSS noise after I turn the key off and the engine is stopping. I checked and there is spark at the distributor cap and at the spark plugs. I had a friend check the injector while I turned it over, and there is gas. Since it has been sitting I have: put in new plugs and wires, changed the fuel filter and put injector cleaner in. all to no avail. I am hoping that someone on here will be able to give me a place to check. Thanks in advance for your help.

lou seal is offline   Quote Quick Reply
Old 01-10-2011, 08:11 PM   #2
Jeeper
 
Join Date: Jan 2011
Posts: 76
Ide start with checking the firing order unless you changed them one at a time.Try the easy stuff first

__________________
Jeep with Things and Stuff
my1stnicejeep is offline   Quote Quick Reply
Old 01-10-2011, 08:23 PM   #3
Newb
 
Join Date: Sep 2009
Posts: 9
Thanks my1stnicejeep. I did change them one at a time. It wasn't starting before I changed them and I hope that it would help. It didn't.
lou seal is offline   Quote Quick Reply
Old 01-10-2011, 08:31 PM   #4
Jeeper
 
Join Date: Jan 2011
Posts: 76
It sounds like a timing issue.I know running with just an open exhaust manifold is not ideal.Hopefully nothing happened to the intake/exhaust valves.How many miles do you think you put on it with the bolts loose?Highway stop and go driving?
__________________
Jeep with Things and Stuff
my1stnicejeep is offline   Quote Quick Reply
Old 01-10-2011, 08:33 PM   #5
Newb
 
Join Date: Sep 2009
Posts: 9
I'd say about 50 miles... combination of highway and surface streets.
lou seal is offline   Quote Quick Reply
Old 01-10-2011, 08:42 PM   #6
Jeeper
 
Join Date: Jan 2011
Posts: 76
Was it completely disconnected?Was it running really rough or just loud like would be expected considering the open/loose exhaust.With only 50 miles I doubt any damage was done.

Try spraying some starting fluid in it.If it doesnt start then you know its electrical.
__________________
Jeep with Things and Stuff
my1stnicejeep is offline   Quote Quick Reply
Old 01-10-2011, 11:28 PM   #7
Jeeper
 
90YJinPC's Avatar
 
Join Date: Feb 2010
Location: Panama City, Fl
Posts: 131
Sounds like a exhaust restriction to me. You can loosen exhaust pipe or remove O2 sensor and give a try.
90YJinPC is offline   Quote Quick Reply
Old 01-11-2011, 07:14 PM   #8
Newb
 
Join Date: Sep 2009
Posts: 9
90YJinPC. You nailed it. loosened the exhaust pipe and it started. It is running, but running terrible. I have the gas pedal to the floor and it is barely at 1000 rpm. Any suggestions...
lou seal is offline   Quote Quick Reply
Old 01-12-2011, 02:58 AM   #9
Jeeper
 
90YJinPC's Avatar
 
Join Date: Feb 2010
Location: Panama City, Fl
Posts: 131
Probably still not breathing well enough would be my guess. I would suggest a new cat. and make sure no pieces of it broke loose, causing blockage further down the line.
90YJinPC is offline   Quote Quick Reply
Old 01-12-2011, 07:48 AM   #10
Jeeper
 
Tyewilly's Avatar
 
Join Date: Dec 2010
Posts: 551
^x2
Tyewilly is offline   Quote Quick Reply
Old 01-26-2011, 10:06 AM   #11
Newb
 
Join Date: Sep 2009
Posts: 9
Well you guys were 100% right. Got a new Cat and new muffler and it is running great. Thanks for all your help. You guys definitely know what you're talking about,.

lou seal is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
1995 Jeep Wrangler YJ will not start after these Symptoms packermanwi YJ Tech Forum 11 09-28-2012 08:52 AM
Unique No Start situation BBerry4430 YJ Tech Forum 3 06-05-2010 07:36 PM
99 4 cyl won't crank/won't start In The Surf TJ Tech Forum 9 05-25-2010 07:15 PM
89 yj won't start...Has fuel and spark 19yj89 YJ Tech Forum 12 10-22-2009 07:25 AM
97 TJ wont start after using charger starter Tom Van Horn TJ Tech Forum 1 02-24-2006 08:51 AM


logo carid shop wrangler parts carid fender flares custom wheels store avs deflectors at carid
» Rates
Get low rates on auto insurance in Canada!

» Network Links
»Jeep Parts
» Featured Product

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



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC