Question about 2003 Jeep Wrangler

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Is installing new lifters in a 2003 4.0 hard for

Is installing new lifters in a 2003 jeep wrangler 4.0 hard to do for a do it your self person Thay make noise on startup after a few days of sitting.

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NOISE ON START UP DONT MEAN OVER HAUL TIME.FIRST MAKE SURE YOU ARE USING THE RIGHT OIL WEIGHT.DO A OIL CHANGE AND CHANGE OIL FILTER IF IT HAS BEEN A WHILE.I NOTICE PEOPLE WITH NEW CARS COMPLAIN ABOUT LIFTER NOISE. SOME GUYS HAS PUT A LIFTER QUIETNER IN THEIR OIL DURING A OIL CHANGE. PUTTING LIFTERS IN A ENGINE.YOU HAVE TO HAVE AT LEAST SKILL LEVEL CODE B MEANING YOU MUST HAVE BASIC KNOWLEDGE OF COMPLEX SYSTEMS.

Posted on Sep 25, 2009

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Posted on Jan 02, 2017

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2 Answers

Are the lifters hydrolicts, or do thay need ajustment its a v6 2, 5


Hi, I really would just take the vehicle to a garage, it is not very old and they could sort the problem out fairly quickly. I really would not expect tappetty/camshaft noises from a 4 yrar old car, there might be something more serious amiss than clacking valve.

GOOD LUCK


I have added a link to a site that might possibly be useful, see below

Jun 17, 2015 | 2011 Jeep Grand Cherokee

1 Answer

How do you adjust the values on my jeep wrangler 4.0 6cyl


as they are hydulic you should not have to adjust them,if they are rattling,it's usually due to poor oil change history,try engine flush and you may have to remove sump afterwoods if the gunk blocks up the oil pickup,filters block and unfiltered oil then circulates throughout engine and makes lifters noisy,to check hyd lifters you need a "bleed down bar"to compress lifter and measure gap between rocker and valve,if it does have adjustable rockers then it's done with engine idleing with rocker cover off ,back off nut till it rattles,thentighen it down till it stops and then 1/4 more turn

Jun 22, 2014 | 2000 Jeep Wrangler

1 Answer

Jeep Wrnagler will not start


Have the battery checked, sounds like you may have a bad cell

Nov 01, 2011 | 2003 Jeep Wrangler

1 Answer

At 50mph it atartas shaking i bought new tire, new brakes been bal,new rotors new calabers any one have a clue? 2003 jeep wrangler


have some one remove the drive shaft and check the u-joints, sounds like you have one going bad.

Mar 12, 2011 | 2003 Jeep Wrangler

2 Answers

My jeep ticks constantly and the front end shakes


likely two unrelated problems. If you have good oil pressure (usually around 40psi) your lifters are sticking or you have wear on lifters, cam, rocker pivots (pick one). Cure can be as simple as using marvel oil in each oil change or replacing whatever has worn. Front end should be thoroughly checked for wear, wheel balance should be checked, tires checked for broken belts etc. Again, change anything that show up as bad.

Nov 08, 2009 | 2003 Jeep Wrangler

1 Answer

2003 Wrangler Tire buying dilemma.


1) If you want performance in the rain, you need an all season tire.
2) I had 31x10.5 on my Jeep.
3) The vibration could be a bad steering damper.
4) Dana rears are almost ablong shaped on the cover. The other is perfect round shape cover.
5) Tell your wife the Jeep is for her.

Nov 18, 2008 | 2003 Jeep Wrangler

1 Answer

2003 jeep wrangler transmission problem


look under vehicle and make sure drive shaft going to back of truck is still there and connected. if it is there is a problem w/transfercase.

Nov 09, 2008 | 2003 Jeep Wrangler

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