jpmarine6786

I yesterday I noticed that my 4.0 started ticking. It seems to be low end as it gets louder when you put your head underneath the Jeep. Is this a lifter tick or something far worse? I don't really have the money for this engine to crap out. 98 XJ Sport with 199701 miles on it. Oil level is good and so is the pressure. Is this bad news?

CCKen

The ticking on top sounds like injectors.


Couldn't get the sound under the engine - you moved around too much.


Add some 'Restore' to the crankcase and move along.

jpmarine6786

Excuse my lack of knowledge. What is that?

EZEARL

The fuel injectors make a ticking sound as they are activated. If you have problem in the bottom end of the motor it's usually a knock rather than tick.

Bustedback

Congratulations, you have a normal sounding Jeep 4.0 inline six.

CCKen

What? Restore? Go to an auto parts store, they have it on the shelf.

jpmarine6786

Thanks guys. I need to stop reading the forum posts. It makes me super paranoid so when this sound came out of nowhere it scared me. Now its gone.

CCKen

It will be back.


Stay on top of your oil changes and use a Wix or Napa Gold filter. This helps.