Starting issue

[jeffrey3474]

Hello,
I am currently having trouble with my 2004 4.0 wrangler x starting after it has been ran/warmed up. It starts fine on a cold start. Any ideas on what it could be would be much appreciated.
Recently did the fuel pump and purge valve.

 

[macleanflood]

What's your fuel pressure now?

-Mac

 

[jeffrey3474]

What's your fuel pressure now?

-Mac

I haven’t tested it but I will

 

[macleanflood]

Also...

Thread 'TSB: 18-031-03 (4.0L Rough Engine Idle After Restart Following A Hot Soak)'

Oct 6, 2016

I installed a short piece of insulation around the 4.0L engine's #3 injection per a TSB (technical service bulletin) which is for 2000-2004 engines. It took about ten minutes from start to finish.

http://www.wjjeeps.com/tsb/tsb_wj_1803103.pdf

I had recently noticed a minor misfire after restarting the hot engine which had sat a short while causing heat soak. It felt like a single cylinder misfire and pretty sure this TSB will resolve it. The TSB describes a condition in which heat from the exhaust manifold (header) causes fuel to partially vaporize in the #3 fuel injector that...

• Jerry Bransford
• Replies: 11
• Forum: TJ Resources

• 

-Mac