Crankshaft, timing chain or ....Video
10-18-2011, 10:54 AM
#1
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Year: 1999
Model: Cherokee
Engine: 4.0
Crankshaft, timing chain or ....Video
Here is the video of my balancer play...
http://s1211.photobucket.com/albums/...ancerplay1.mp4
Is this normal or do i have a timing chain slack or is it crankshaft issure?
Appreciate if someone can help.
Thx.
http://s1211.photobucket.com/albums/...ancerplay1.mp4
Is this normal or do i have a timing chain slack or is it crankshaft issure?
Appreciate if someone can help.
Thx.
10-18-2011, 11:13 AM
#2
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Year: 2000
Model: Cherokee
Engine: 4.0
The only thing that can be determined by that video is that you do have a lot of timing chain slack. I can't say "more than normal" because normal is relevant to the amount of miles on the motor. I would suggest to go ahead an pull the timing cover off and have a better look. If all of that play is slack, change your timing chain.
10-18-2011, 11:16 AM
#3
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Year: 1991
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Engine: 4.0 L
hmmmmm. just watched your video.......when you do this movement with your hands on the balancer (yes I know its only just a wee bit of movement), do you see ANY movement on the valves at all?
(spring/rocker moving even the slightest bit?).
And how hard are you turning this? I mean, it is REAL easy, or are you using significant effort to move the balancer?
How many miles on it? Also, what are your compression readings? (provided you did them).
can't recall, did you post saying something about misfire previously? (pardon my ignorance sir!)
seems like that would be normal between compression strokes (i.e just before/after TDC), cuz I know when I was turning mine with a b-bar and socket, there was a point during cycle that it turned relatively easy, so I would venture to say, you are probably all right.....
But, that is just MY opinion.
cheers!
cpnwrench
10-18-2011, 11:29 AM
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Year: 1999
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I will just say that it just does not seem right to me to have any play.I think that is quite a lot of play actually. I would definitely have a look under the cover.
10-18-2011, 12:38 PM
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Year: 1999
Model: Cherokee
Engine: 4.0
The only thing that can be determined by that video is that you do have a lot of timing chain slack. I can't say "more than normal" because normal is relevant to the amount of miles on the motor. I would suggest to go ahead an pull the timing cover off and have a better look. If all of that play is slack, change your timing chain.
Heading over to napa later
hmmmmm. just watched your video.......when you do this movement with your hands on the balancer (yes I know its only just a wee bit of movement), do you see ANY movement on the valves at all?
(spring/rocker moving even the slightest bit?).
And how hard are you turning this? I mean, it is REAL easy, or are you using significant effort to move the balancer?
How many miles on it? Also, what are your compression readings? (provided you did them).
can't recall, did you post saying something about misfire previously? (pardon my ignorance sir!)
seems like that would be normal between compression strokes (i.e just before/after TDC), cuz I know when I was turning mine with a b-bar and socket, there was a point during cycle that it turned relatively easy, so I would venture to say, you are probably all right.....
But, that is just MY opinion.
cheers!
cpnwrench
Here are the numbers,
Went over to O'reilly and rented another kit.....getting same (close) numbers.
Tested on another XJ (00'), better numbers but still in the 70's only.
I'm guessing i might have screwed up somewhere, maybe didn't screw tight enough
.
Here is an update on warm engine (99'),
..... Dry ...Wet
#1.. 72...90
#2.. 78...90
#3.. 75...89
#4.. 81...92
#5.. 81...90
#6.. 90...86
Numbers looks better but still not in the 100's but numbers looks fairly even through out.
What you think?
Is she a keeper?
Thx.
Tested on another XJ (00'), better numbers but still in the 70's only.
I'm guessing i might have screwed up somewhere, maybe didn't screw tight enough
.Here is an update on warm engine (99'),
..... Dry ...Wet
#1.. 72...90
#2.. 78...90
#3.. 75...89
#4.. 81...92
#5.. 81...90
#6.. 90...86
Numbers looks better but still not in the 100's but numbers looks fairly even through out.
What you think?
Is she a keeper?
Thx.
Oh, i didn't really use much force on it and i haven't got the chance to look under the valve cover yet (hopefully next 2 days).
This is a stock XJ and i just want to check the overall condition of the motor before i invest some serious $$$ on LA lift kit and other stuff.
Would really appreciate you can help
.
10-19-2011, 09:12 AM
#7
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Model: Grand Cherokee
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I would pull the balance off and check the key way. The balancer is connected directly to the crankshaft.If that is with the plugs in you shouldn't be able to move it that easy bad timing chain or not.
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10-19-2011, 09:49 AM
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Year: 90,84
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Engine: 4.0,2.5
X2 with Zj....guess a guy could watch the torque plate or put a straw through a plug hole touching a piston. If the plugs are in and the crank isn't turning, that's allot of slop.
10-19-2011, 10:08 AM
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Year: 1999
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lol just messin with ya
10-19-2011, 11:35 AM
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I'll report back after i remove the timing cover.
Hey Frank, if you will to guess, what would be the problem?
nvm...."rotating assembly" lol
Thx.
Last edited by BotakBeng; 10-19-2011 at 11:57 AM.
10-23-2011, 04:34 PM
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Year: 1999
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Timing Cover Removed
Finally got done removing the timing cover, here is a video and some pics with alot of questions....
Video,
Looks like a lot of slack to me....i'll go ahead and replace it.
Sludge!
That looks like a lot of sludge to me, or is just normal?
Is the hole in the pic normal?
Any advice and suggestions while i'm replacing the timing chain?
Appreciate all comments and suggestion ....need to decide if i should invest some $erious money in lift kit, etc......
Video,
Looks like a lot of slack to me....i'll go ahead and replace it.
Sludge!
That looks like a lot of sludge to me, or is just normal?
Is the hole in the pic normal?
Any advice and suggestions while i'm replacing the timing chain?
Appreciate all comments and suggestion ....need to decide if i should invest some $erious money in lift kit, etc......
Last edited by BotakBeng; 10-23-2011 at 04:38 PM.