Please HELP!! engine noise sounds bad
#1
Member
Thread Starter
Join Date: Mar 2011
Location: Delaware
Posts: 180
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0L i6
Please HELP!! engine noise sounds bad
Hey everyone I need help. I have a 2000 xj. I was on my way home the other night and this noise just started out of the blue. It is louder when when the accelerator is pushed. Any help on what it could be would be great. It sounds like it is coming from somewhere near the front of the engine on the spark plug side of the header.
http://www.youtube.com/watch?v=7WNA7...ature=youtu.be
http://www.youtube.com/watch?v=7WNA7...ature=youtu.be
#2
Newbie
Join Date: Nov 2013
Location: Southern Oregon
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1989
Model: Cherokee
Engine: 4.7l stroker
Well to me that sounded like a exhaust manifold either cracked or a bad gasket. With out being there and having the hood open thats what it sounds like to me.
#3
CF Veteran
Join Date: Apr 2012
Location: Wisconsin
Posts: 5,302
Likes: 0
Received 19 Likes
on
16 Posts
Model: Cherokee
Sounds like a broken piston skirt to me. But could be anything from an exhaust leak to a flexplate bolt that's backed out, hard to say from the video.
Try disconnecting the injector to each cylinder, one by one to see if the noise changes.
Try disconnecting the injector to each cylinder, one by one to see if the noise changes.
#5
Member
Thread Starter
Join Date: Mar 2011
Location: Delaware
Posts: 180
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0L i6
Trending Topics
#8
CF Veteran
Join Date: Oct 2013
Location: Denver
Posts: 1,589
Likes: 0
Received 1 Like
on
1 Post
Year: 99
Model: Cherokee
Engine: 4.0
Put your hand or a piece of paper in there and see where the puffing is coming from. You can take the oil cap off and see if its spraying oil up or puffing lots of air.
That is an ugly sound
That is an ugly sound
#9
CF Veteran
Join Date: Aug 2011
Location: Nor-Cal Coast
Posts: 10,489
Likes: 0
Received 17 Likes
on
17 Posts
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
On the left, (drivers side) you might have a bolt/stud missing from your exhaust manifold. Or that gasket blown seriously out. Or real trouble with the exhaust manifold.
Then if it's on the right find if its a plug or the head gasket. The head gasket is lower than the plugs. (the plugs screw into the head).
Guess it's running smooth enough it's not a plug out. That's what that sounds like though.
Last edited by DFlintstone; 12-04-2013 at 02:36 AM.
#13
Senior Member
Join Date: Apr 2012
Location: Ocean, New Jersey
Posts: 578
Likes: 0
Received 4 Likes
on
4 Posts
Year: 2000
Model: Cherokee
Engine: 4.0
And by the way, your overflow bottle looks totally empty. It's probably unrelated to your noise but if you don't have an external leak, that is usually a sign of coolant getting into the oil and on a 2000 XJ it usually translates to a cracked head. Been there...
#15
Newbie
Join Date: Nov 2013
Location: Southern Oregon
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1989
Model: Cherokee
Engine: 4.7l stroker
The second vid does seem to be more of an exhaust leak. I would check to see if all of your Intack/Exhaust manifold bolts are tight. The last couple of these inline sixes I have had, had those bolts work themselves lose. Even my 258 inline six did the same thing.