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Replace timing chain or no? #4547511
10/18/17 06:22 PM
10/18/17 06:22 PM
Joined: Sep 2013
Posts: 10,683
Indiana
dlundblad Offline OP
dlundblad  Offline OP
Joined: Sep 2013
Posts: 10,683
Indiana
I finally had a chance to rent a puller and get the harmonic balancer and timing chain cover off my Jeep due to a weeping timing chain cover gasket.. The chain is pretty sloppy.

My book says anything over 1/2" of play and it should be replaced, but I have read online that the chain should last the life of the engine. What is one to do? (The whole front end of the Jeep is removed at the moment. Plenty of room to work.)

The Mopar chain is about $40. I am not thinking anything else should be replaced.


03 Jeep WJ 4.0 202k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 186k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 153k Synpower 5w30 Supertech ST3980 (Ecore)

Re: Replace timing chain or no? [Re: dlundblad] #4547516
10/18/17 06:25 PM
10/18/17 06:25 PM
Joined: Apr 2017
Posts: 515
Fort Worth TX
TheKracken Offline
TheKracken  Offline
Joined: Apr 2017
Posts: 515
Fort Worth TX
If it is not very hard to replace and only 40$, I would just do it. Unless you plan to get rid of it sooner rather than later?


2011 Prius 96k miles RLI 5w20
97 Toy T100 4x4: amsoil 0w20 242k Miles
04 Toy Sienna awd: Pennzoil 0w20 281k Miles
Re: Replace timing chain or no? [Re: dlundblad] #4547519
10/18/17 06:28 PM
10/18/17 06:28 PM
Joined: Sep 2010
Posts: 7,485
S California
OneEyeJack Offline
OneEyeJack  Offline
Joined: Sep 2010
Posts: 7,485
S California
You might need to check the guide(s) and tensioner, too.

Re: Replace timing chain or no? [Re: dlundblad] #4547521
10/18/17 06:29 PM
10/18/17 06:29 PM
Joined: Feb 2013
Posts: 11,091
Phoenix, AZ
Nick1994 Offline
Nick1994  Offline
Joined: Feb 2013
Posts: 11,091
Phoenix, AZ
Iíd replace it.

I had mine replaced 2 years ago at about 135k miles. It was randomly stalling and set a cam position sensor code. My mechanic found that the distributor was bad and chewed up the cam sensor inside. He replaced the distributor and then it set a misfire code (distributor isnít adjustable on a 4.0L). Found that the timing chain was real sloppy (he put a socket on the end of the crank and turned and it took a while of turning until the distributor moved). New timing chain and itís been golden.


2015 Hyundai Sonata 2.4L 88k Motorcraft Synthetic Blend 5w30 & OEM
2000 Toyota Camry 2.2L 231k Valvoline 5w30 & Fram Ultra
1996 Jeep Cherokee 4.0L 147k Mobil 1 HM 10w40 & Fram Ultra
Re: Replace timing chain or no? [Re: Nick1994] #4547525
10/18/17 06:33 PM
10/18/17 06:33 PM
Joined: Mar 2015
Posts: 5,425
Virginia
bbhero Offline
bbhero  Offline
Joined: Mar 2015
Posts: 5,425
Virginia
+1 to what Nick1994 said and what Oneyejack said as well. Go big or go home smile good luck with it. I know you will do good work with it.

Last edited by bbhero; 10/18/17 06:34 PM.
Re: Replace timing chain or no? [Re: OneEyeJack] #4547531
10/18/17 06:39 PM
10/18/17 06:39 PM
Joined: Aug 2008
Posts: 21,312
ON, Canada eh?
StevieC Offline
StevieC  Offline
Joined: Aug 2008
Posts: 21,312
ON, Canada eh?
Replace the chain, you are already in there... And

Originally Posted By: OneEyeJack
You might need to check the guide(s) and tensioner, too.


+1

Last edited by StevieC; 10/18/17 06:40 PM.

'18 Dodge Grand Caravan GT - AMSOIL SS 5w20
'06 Santa Fe - 535,000km AMSOIL SS 0w30 / ATF
Re: Replace timing chain or no? [Re: dlundblad] #4547534
10/18/17 06:43 PM
10/18/17 06:43 PM
Joined: May 2009
Posts: 516
Hawaii, USA
anndel Online content
anndel  Online Content
Joined: May 2009
Posts: 516
Hawaii, USA
Replace it, you'll sleep better at night. wink


1993 Toyota 4x4 p/u, 2.4L 22RE 4 cyl - Amsoil SS 10W-30, Yota OEM Filter
2005 Toyota Avalon XL, 3.5L V6, Amsoil SS 5W-30, Yota OEM Filter
2014 Toyota Tacoma 4.0L V6, Amsoil SS5W-30, Yota OEM Filter
Re: Replace timing chain or no? [Re: dlundblad] #4547543
10/18/17 06:47 PM
10/18/17 06:47 PM
Joined: Sep 2013
Posts: 10,683
Indiana
dlundblad Offline OP
dlundblad  Offline OP
Joined: Sep 2013
Posts: 10,683
Indiana
Originally Posted By: StevieC
Replace the chain, you are already in there... And

Originally Posted By: OneEyeJack
You might need to check the guide(s) and tensioner, too.


+1


There's a rubber guide inside the cover, but that's it.

Last edited by dlundblad; 10/18/17 06:47 PM.

03 Jeep WJ 4.0 202k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 186k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 153k Synpower 5w30 Supertech ST3980 (Ecore)

Re: Replace timing chain or no? [Re: dlundblad] #4547551
10/18/17 06:49 PM
10/18/17 06:49 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA
You should replace the cam and crank sprockets too---otherwise, the teeth are a little worn and your brand new chain would have to "wear in" to the sprockets. You'd be wearing your new chain out faster. I don't know why they don't come as a set---pretty dumb not to have them available as a set.

Re: Replace timing chain or no? [Re: dlundblad] #4547556
10/18/17 06:50 PM
10/18/17 06:50 PM
Joined: Aug 2008
Posts: 21,312
ON, Canada eh?
StevieC Offline
StevieC  Offline
Joined: Aug 2008
Posts: 21,312
ON, Canada eh?
Sorry wasn't sure which Jeep. smile


'18 Dodge Grand Caravan GT - AMSOIL SS 5w20
'06 Santa Fe - 535,000km AMSOIL SS 0w30 / ATF
Re: Replace timing chain or no? [Re: TheKracken] #4547562
10/18/17 06:51 PM
10/18/17 06:51 PM
Joined: Nov 2011
Posts: 4,970
MTL, CANADA
Rolla07 Offline
Rolla07  Offline
Joined: Nov 2011
Posts: 4,970
MTL, CANADA
Originally Posted By: TheKracken
If it is not very hard to replace and only 40$, I would just do it. Unless you plan to get rid of it sooner rather than later?


+1


2007 Corolla Red Pearl 155k miles
PP 0w20 & ST 4967

Re: Replace timing chain or no? [Re: StevieC] #4547564
10/18/17 06:52 PM
10/18/17 06:52 PM
Joined: Sep 2013
Posts: 10,683
Indiana
dlundblad Offline OP
dlundblad  Offline OP
Joined: Sep 2013
Posts: 10,683
Indiana
Originally Posted By: StevieC
Sorry wasn't sure which Jeep. smile


No reason to be sorry.

Thanks for your help.


03 Jeep WJ 4.0 202k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 186k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 153k Synpower 5w30 Supertech ST3980 (Ecore)

Re: Replace timing chain or no? [Re: dlundblad] #4547568
10/18/17 06:54 PM
10/18/17 06:54 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Bump because the OP probably didn't see my previous post.

Re: Replace timing chain or no? [Re: dlundblad] #4547570
10/18/17 06:54 PM
10/18/17 06:54 PM
Joined: Aug 2008
Posts: 21,312
ON, Canada eh?
StevieC Offline
StevieC  Offline
Joined: Aug 2008
Posts: 21,312
ON, Canada eh?
Cheers2 Canada USA


'18 Dodge Grand Caravan GT - AMSOIL SS 5w20
'06 Santa Fe - 535,000km AMSOIL SS 0w30 / ATF
Re: Replace timing chain or no? [Re: dlundblad] #4547572
10/18/17 06:55 PM
10/18/17 06:55 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Bump again because StevieC bumped his post.

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