andymanva

Just changed my spark plugs and wires 2 days ago, every thing was working great. Today I have a rough idle and fuel smell, I can't figure it out. Is it related to the spark plugs or something else?

Roler

welcome to the forum.

1) Always provide info regarding your cherokee: year, engine etc. The advice requested sometimes is different for different years.

2) Rule after problems occuring after work that has been done: CHECK the work that has been done.


So, with no additional info, let's gamble you have the inline 6 4.0 auto:
In your case:
1)have you checked the spark plug gaps before you put them in?
2) check if you reconnected the plug wires in the correct firing sequence. Check this again.
3) make sure you've have the plugs and wires all seated snug

andymanva

Thank you for the welcome,

Sorry, I have a 1998 Jeep Cherokee Sport, 4.0L inline v6. Checked the wires and the plugs are snug. I bought the pre-gapped plugs so I did not check the gap, are the pre-gapped plugs not gapped correctly?

Roler

They usually are pre-gapped. However, always check the gap before putting them in. Gap difference out of spec can cause a lot of running rough issues etc and are simply prevented by verifying.

You made absolutely sure you connected the wires correctly?
What plugs did you put in?

cruiser54

Roler, you need to get into the current century with your diagrams.

Roler

What you mean? Don't see much difference in what is demonstrated in your pic and mine in post #2...

cruiser54

Yours has #1 in the wrong position........

Roler

I wouldn't say so, Cruiser. Maybe the whole set seems somewhat shifted clockwise, but the idea is the same. I think this pic comes out of the FSM.
Isn't the #1position indicated anyway on the dist cap?

cruiser54

I think it's a Haynes or Chilton diagram. Flintstone will chime in eith the sordid details.

DFlintstone

Yer gonna get me in trouble again Pete! Rooler, the FSM and the books are wrong/misleading. #1 is located at the 5:00 position as viewed from the side.
I'm sure that has caused plenty, plenty of grief, is why that has been in my signature for about a year.

Andy, if you could find a real computer and fill out your info, people won't need to search around to see what you have. Hopefully soon, ether the Gadget makers, Or CF will figure out a way to make that work. There were plenty of changes in 14 years, and needing to look for post #3, if you are on post #30 sucks.....

Roler

Well, in that case, both Cruiser's and my pic are incorrect, aren't they. Although Cruiser's pic appears more 1 o'clock than my pic which is shifted clockwise. Did I mention the word clock often enough now?
And yes, I must have noticed your remark on this in your sig in the past...but not registered this, until now

cruiser54

No. Mine is correct.

Roler

I edited my post while you were typing yours, Cruiser
I've saved your pic for future generations too...

cruiser54

Cool.

DFlintstone

Or there is my original "classic". Classics can be better than the "improved". Mine shows a screw!