Very rough idle and fuel leak on rail

[jdog]

Ok do you have fuel and spark?

[jeepmjga]

Prob not the issue and just throwing it out there but check the fuel pump ballast resistor also. Could cause it not to start or quit running if the connections are loose or bad altogether. Little ceramic piece with two connectors on the drivers side inner fender. 

[watchamakalit]

Is there sufficient fuel in the tank?

 

I know it sounds like a dumb question, but ive been down that road before.

[Jesse J]

There’s enough fuel in the tank and it has pressure weather the injectors are firing idk. There’s not spark when I take a plug out and crank it over (dunno if that’s the correct way) and I can't find an actual like ceramic piece like I looked up it looks like this 

[watchamakalit]

Make sure you spark plug is grounded or it can't spark.  First step will be determining spark or not.

 

The ballast resistor should be just forward of your picture. Like this

 

[87MJTIM]

87s did not come from the factory with a ballast resistor.  There was a TSB to address the loud fuel pump with a dealer installed BR.

 

My 87 doesn't have a BR.  I have a parts 87 XJ that has the BR installed.

[watchamakalit]

2 minutes ago, 87MJTIM said:

87s did not come from the factory with a ballast resistor.  There was a TSB to address the loud fuel pump with a dealer installed BR.

 

My 87 doesn't have a BR.  I have a parts 87 XJ that has the BR installed.

Well I learned something new.

[Jesse J]

Ok that’s good 

[JustEmptyEveryPocket]

6 hours ago, watchamakalit said:

Make sure you spark plug is grounded or it can't spark.

If you REALLY want to know if its sparking or not, put your finger near the electrode and have a buddy turn the key while you hold the plug. You should feel a possible range of "Felt Nothing" to "Blacked Out and Pissed My Pants". So not only will you know for sure if there is spark or not, you will also know how strong of a spark you are getting.

[fiatslug87]

[cruiser54]

excellent advice Pockets.

[Jesse J]

so I took a plug out and it shocked the bezzesus out of me and almost started but it was missing for obvious reaosns but half started I put it back in and it didnt want to start again. Could have to do with the anti sieze on the plugs? ive heard thats fine could be wrong. Took plug 3 out for reference

[cruiser54]

Better check them all at this point.

 

And no, anti-seize isn't the issue. 

[scaleless]

He actually went and electrocuted himself lmao!

 

As for the never-sneeze, if you were particularly messy with it make sure it's not on the electrode, otherwise as Cruiser said it's definitely not an issue.

[watchamakalit]

Lmao. Thats why you need to be careful taking internet advice.

 

Better check all the plugs as mentioned.

 

Ps.

https://www.amazon.com/dp/B01HU2L1NU/ref=cm_sw_r_cp_apa_glt_fabc_4VGXHDBW5400EJXEHKM4?_encoding=UTF8&psc=1

[MiNi Beast]

1 hour ago, watchamakalit said:

Lmao. Thats why you need to be careful taking internet advice.

 

Better check all the plugs as mentioned.

 

Ps.

https://www.amazon.com/dp/B01HU2L1NU/ref=cm_sw_r_cp_apa_glt_fabc_4VGXHDBW5400EJXEHKM4?_encoding=UTF8&psc=1

That tool is for rich folks. Nothing better then a finger to give you that reliable hands on test. 

[watchamakalit]

28 minutes ago, MiNi Beast said:

That tool is for rich folks. Nothing better then a finger to give you that reliable hands on test. 

Never had much experience with a GM hei setup have you?  I'm a firm believer thats one of the strongest "spark checks" I ever experienced.

[cruiser54]

True. But the ignition set up on our Jeeps is no slouch either. 

[watchamakalit]

can't say I remember being hit by any of my 4.0l's. I got smart after the hei

[Jesse J]

So first no spark second spark and it ran fourth no spark fifth no spark and I couldn’t get to my sixth one and that was just more than I wanted to do because I don’t have my 3/8s at the moment 

[JustEmptyEveryPocket]

P...Please tell me you aren't actually taking them out and holding each of them to check for spark. I just . . . no words . . . 

 

At least tell me you recorded the event? Link me the video if it exists. Then please buy the inline spark checker.

[Jesse J]

51 minutes ago, JustEmptyEveryPocket said:

P...Please tell me you aren't actually taking them out and holding each of them to check for spark. I just . . . no words . . . 

 

At least tell me you recorded the event? Link me the video if it exists. Then please buy the inline spark checker.

 No I was good thing only #2 sparked I guess

[jdog]

Pull your distributor cap and see where you rotor is ( the thing under the cap). Then have someone turn it over and make sure it's moving, it doesn't sound like it is

[Jesse J]

It’s moving nice and smoothly

[jdog]

What do the plugs look like? And how does the rotor look, pictures?