Cold Start Turned Into No Start...Problem Resolved...Lesson Learned... -
LinkBack Thread Tools
post #1 of 3 Old 12-05-2007, 09:27 AM Thread Starter
Registered User
2007 JK Wrangler 
Join Date: Jan 2007
Location: Euclid
Posts: 356
Cold Start Turned Into No Start...Problem Resolved...Lesson Learned...

I thought I would share an experience I had last evening in hopes that it may help someone else in the future. Here it goes......

Last night, I headed to the parking garage after a long shift at work. It was a cold 28 degrees. Before I jumped up into my Jeep, I reached in and started the engine. Once I hopped up, I realized that I had forgotten to unlock the console that had my CD player face plate in it. Without thinking, I immediately turned the engine off and unlocked the lid.

With faceplate in place I quickly moved to restart the engine to get some heat going. To my dismay it only cranked.....and cranked.....and cranked.... Puzzled, I turned off the key and let out a few curse words. I gave it a minute or so and cranked again. Nothing.

Back out of the Jeep I went and I moved to the front of the Heep to lift the hood. Immediately I smelled fuel. Instantly I thought that the motor was flooded. "Great", I thought. I had no tools, no flashlight, and no anything. What the heck was I going to do?? I couldn't pull the spark plugs to dry out the cylinders by hand. And at this temperature it would take hours for the gasoline to vaporize in the closed, cold cylinders!

I decided to head back into the hospital to gather some makeshift tools and to warm up. I came back out with a flashlight, some tape, hemostats, and a flathead screwdriver. I didn't know what the heck I would use them for, but they would be more use than nothing at all.

On the way back out I decided it might be a good idea to check the fuses in case my initial hypothesis was incorrect. Upon arrival back to the vehicle, I looked over all of the important fuses, inside and out. Everything checked out ok. At that moment, the idea of the century came to me.

Backing my original idea, I thought that if I pulled the fuel pump relay, then cranked the engine, it would dry out the cyclinders and burn off most of the fuel that was flooding them without adding any more.

I tried the idea and cranked until there was no more sputtering. I put the relay back in place and gave it a try. It fired right up! The ride home was flawless. I had never been happier to hear the clunk of my exhaust hitting the frame over bumps, or the feel of the freezing cold rush of air on my leg coming through a small srew hole in my firewall .

I know, I know. I'm an idiot for shutting the engine off after just starting it. The outcome was positive, though, and it was a lesson learned. Thanks for reading.

07 Wrangler Unlimited Rubicon
02 Liberty Sport

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
<---- AR15, AK Accessories
tony673 is offline  
Sponsored Links
post #2 of 3 Old 10-02-2011, 08:13 PM
Daily Driver
1989 YJ Wrangler 
Join Date: Jun 2006
Location: Issaquah
Posts: 1,048
Very clever - thanks for Posting that!
bharris68 is offline  
post #3 of 3 Old 10-02-2011, 08:49 PM
Registered User
1990 YJ Wrangler 
Join Date: Nov 2009
Location: The southern armpit of California
Posts: 2,098
Interesting solution to a flooded engine.

AFAIK, most (if not all) fuel injected engines have a "flood clear" mode that goes into effect when you floor the gas pedal and crank the engine. This shuts off the injectors until the excess fuel is cleared from the cylinders. I know that it's a feature on the Howell TBI kit, I'd be really surprised if the '07 JK with MPFI didn't have this feature.
NonRubicon is offline  

Quick Reply

Register Now

In order to be able to post messages on the forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


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.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
cold start problem LOCAL TJ Wrangler Technical Forum 3 12-09-2009 03:51 PM
94 YJ 2.5 Cold Hard start now No Start Problem UNLIMITLESS YJ Wrangler Technical Forum 8 10-28-2009 04:53 PM
Jeep wont start...........Lesson learned rustywrangler YJ Wrangler Technical Forum 13 01-31-2009 12:19 AM
cold start problem grogan14 YJ Wrangler Technical Forum 2 11-06-2007 05:17 PM
cold start problem soopa7fly YJ Wrangler Technical Forum 7 12-25-2004 02:31 PM

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 On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome