Lifter noise on startup?

Vinny's Jeep · 03-16-2005, 03:47 PM

OK, here we go again.

My 4.0 started making tapping/clicking noises on startup a couple of months ago (approx 38k), I don't know if you remember but I posted a topic cause I thought it was piston slap. Thru some very kind and generous feedback from you lovely folk

we put it down to lifter noise due to dry start

. Went down to my local pepboys and got myself some mobil 1 synthetic and K&N 2001 oil filter with superb backflow valve technology. The startup noise dissapeared

only to come back 1 month (800 miles) later [img]sad_anim.gif[/img] . Took it to the dealership [img]graemlins/icon_banghead.gif[/img] who informed me that what I have is lifter noise and that it is kinda normal, to leave it alone and live with it. The nice man said that the lifters are hydrolic so even though you hear some noise it is only due to dirt and stuff and as long as the noise goes away after a little while you have nothing to worry about. I like adding stuff to my jeep but am not very well versed on taking things apart or off my rig. IS THE NICE MAN AT THE DEALERSHIP TELLING ME THE TRUTH???? OR IS HE ONE OF THOSE [img]graemlins/screwy.gif[/img]

You guys rock [img]graemlins/rock.gif[/img]

MJMA · 03-16-2005, 03:51 PM

What he said is pretty much true. I'm not so sure about the dirt part though. The lifter noise is not a bad thing, it should go away after the oil heats up and then pressurizes the hydraulic lifters, they work using oil(hydraulic) pressure. If you run synthetic it is more likely to drip down out of the top end while sitting. I wouldn't worry about it

Vinny's Jeep · 03-16-2005, 09:19 PM

Thanks for the reassuring feedback [img]graemlins/thumbsup.gif[/img]

Jan de Boer · 03-16-2005, 09:47 PM

You should hear the lifters in my 96 hyundai accent (dd). after hearing them any jeep lifter noise is very nominal. Mine does it too and has 232000 kms on it. Still working fine!

deke · 03-16-2005, 10:01 PM

the 4.0 is a noisey motor. just one of those things really

03-16-2005, 03:47 PM	#1
Vinny's Jeep Jeeper Join Date: Feb 2005 Location: Santa Barbara California Posts: 61	OK, here we go again. My 4.0 started making tapping/clicking noises on startup a couple of months ago (approx 38k), I don't know if you remember but I posted a topic cause I thought it was piston slap. Thru some very kind and generous feedback from you lovely folk we put it down to lifter noise due to dry start . Went down to my local pepboys and got myself some mobil 1 synthetic and K&N 2001 oil filter with superb backflow valve technology. The startup noise dissapeared only to come back 1 month (800 miles) later [img]sad_anim.gif[/img] . Took it to the dealership [img]graemlins/icon_banghead.gif[/img] who informed me that what I have is lifter noise and that it is kinda normal, to leave it alone and live with it. The nice man said that the lifters are hydrolic so even though you hear some noise it is only due to dirt and stuff and as long as the noise goes away after a little while you have nothing to worry about. I like adding stuff to my jeep but am not very well versed on taking things apart or off my rig. IS THE NICE MAN AT THE DEALERSHIP TELLING ME THE TRUTH???? OR IS HE ONE OF THOSE [img]graemlins/screwy.gif[/img] You guys rock [img]graemlins/rock.gif[/img] __________________ 2001 TJ SPORT. 2" LIFT. 32x11.5 BFG's AND A BUNCH OF OTHER STUPID STUFF ;-)

03-16-2005, 03:51 PM	#2
MJMA Got Rocks? Join Date: Aug 2002 Location: Rehoboth, MA, USSA Posts: 9,743	What he said is pretty much true. I'm not so sure about the dirt part though. The lifter noise is not a bad thing, it should go away after the oil heats up and then pressurizes the hydraulic lifters, they work using oil(hydraulic) pressure. If you run synthetic it is more likely to drip down out of the top end while sitting. I wouldn't worry about it __________________ "If a law is unjust, a man is not only right to disobey it, he is obligated to do so." Thomas Jefferson

03-16-2005, 09:19 PM	#3
Vinny's Jeep Jeeper Join Date: Feb 2005 Location: Santa Barbara California Posts: 61	Thanks for the reassuring feedback [img]graemlins/thumbsup.gif[/img] __________________ 2001 TJ SPORT. 2" LIFT. 32x11.5 BFG's AND A BUNCH OF OTHER STUPID STUFF ;-)

03-16-2005, 09:47 PM	#4
Jan de Boer Trail Guide Join Date: Feb 2004 Location: Aldergrove, BC, Canada Posts: 1,394	You should hear the lifters in my 96 hyundai accent (dd). after hearing them any jeep lifter noise is very nominal. Mine does it too and has 232000 kms on it. Still working fine! __________________ HI

03-16-2005, 10:01 PM	#5
deke im a sicko Join Date: Dec 2003 Posts: 7,309	the 4.0 is a noisey motor. just one of those things really __________________ SEARCH<br /><a href="http://www.google.com" target="_blank">www.google.com</a> or <a href="http://www.pirate4x4.com" target="_blank">www.pirate4x4.com</a><br />or use jeepin's own easy to use one at the top of the page<br /><br />jaydee is my hero