Need help identifying oil leak......
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Outstanding HDF Member
Joined: Aug 2005
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Need help identifying oil leak......
Ok this is what I've got going on. Behind the rear cylinder I'm getting alot of oil leaking onto the top of the transmission cover. I'm 99.9% sure it's engine oil, and it looks like it's comming from between the rear cylinder and head. Could it be a head gasket leaking by???. I did a CCP test and both cylinders are the same 210psi. Wouldn't the cylinder leak down while doing the CCP test if the head gasket was leaking??? I also poped off the push rod covers to see if they were leaking, and the O-rings looked good. I started to notice the oil leak last summer, But now it's getting worse and it's got me losing sleep. Anyone have any thoughts on what's going on????
Road Captain
Joined: Sep 2007
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RE: Need help identifying oil leak......
ORIGINAL: 04RoadKing
Ok this is what I've got going on. Behind the rear cylinder I'm getting alot of oil leaking onto the top of the transmission cover. I'm 99.9% sure it's engine oil, and it looks like it's comming from between the rear cylinder and head. Could it be a head gasket leaking by???. I did a CCP test and both cylinders are the same 210psi. Wouldn't the cylinder leak down while doing the CCP test if the head gasket was leaking??? I also poped off the push rod covers to see if they were leaking, and the O-rings looked good. I started to notice the oil leak last summer, But now it's getting worse and it's got me losing sleep. Anyone have any thoughts on what's going on????
Ok this is what I've got going on. Behind the rear cylinder I'm getting alot of oil leaking onto the top of the transmission cover. I'm 99.9% sure it's engine oil, and it looks like it's comming from between the rear cylinder and head. Could it be a head gasket leaking by???. I did a CCP test and both cylinders are the same 210psi. Wouldn't the cylinder leak down while doing the CCP test if the head gasket was leaking??? I also poped off the push rod covers to see if they were leaking, and the O-rings looked good. I started to notice the oil leak last summer, But now it's getting worse and it's got me losing sleep. Anyone have any thoughts on what's going on????
It's probably not the head gasket but
I suspect the rocker cover gasket is leaking.
As both cylinders are 210psi, it must be rocker cover gasket.
Keep us posted
Peter
Road Master
Joined: Jan 2008
Posts: 968
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From: Oconomowoc, Wisconsin
RE: Need help identifying oil leak......
Mine is doing the same thing as well.. Although I can't see where it would be coming from the rocker cover gaskets.. it almost looks like it coming from farther down below.. like the bottome of the jugs.. not the top...
Cruiser
Joined: Apr 2008
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RE: Need help identifying oil leak......
Clean it well with degreaser, or disc break cleaner, then run it for a while. The source of the leak should be evident. If you can't be sure if it's engine oil, and can't detect where the leak is coming from, I would suggest you pay someone with the proper training. Perhaps your local dealer has a tech or two with experience in this area?
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RE: Need help identifying oil leak......
OK here are some pictures. I'm kinda thinking may Big peter is on the right track with it being the rocker housing gasket. But man I don't know??? it sure does look like it's comming from down alot lower like between the Head & cylinder. Take a look at the pictures.
LarryInEstTn I have clean'd it time after time and it's not as evident as you'd think. I've done most of the work on my Bike sence new. I'm no Tech my no means that's for sure. Most of my local dealers are a joke. So I will try and tackle this one as soon as I know where to start wrenching...
LarryInEstTn I have clean'd it time after time and it's not as evident as you'd think. I've done most of the work on my Bike sence new. I'm no Tech my no means that's for sure. Most of my local dealers are a joke. So I will try and tackle this one as soon as I know where to start wrenching...
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Outstanding HDF Member
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RE: Need help identifying oil leak......
ORIGINAL: 04RoadKing
OK here are some pictures. I'm kinda thinking may Big peter is on the right track with it being the rocker housing gasket. But man I don't know??? it sure does look like it's comming from down alot lower like between the Head & cylinder. Take a look at the pictures.
LarryInEstTn I have clean'd it time after time and it's not as evident as you'd think. I've done most of the work on my Bike sence new. I'm no Tech my no means that's for sure. Most of my local dealers are a joke. So I will try and tackle this one as soon as I know where to start wrenching...
OK here are some pictures. I'm kinda thinking may Big peter is on the right track with it being the rocker housing gasket. But man I don't know??? it sure does look like it's comming from down alot lower like between the Head & cylinder. Take a look at the pictures.
LarryInEstTn I have clean'd it time after time and it's not as evident as you'd think. I've done most of the work on my Bike sence new. I'm no Tech my no means that's for sure. Most of my local dealers are a joke. So I will try and tackle this one as soon as I know where to start wrenching...
Don't know why the pics are so small?? They are kinda hard to see....
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Road Master
Joined: Jan 2008
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From: Oconomowoc, Wisconsin
RE: Need help identifying oil leak......
Looks like mine is the rocker cover leaking.. now.. I wanna know if this is going to be a PITA like it was on my sporty... is there enough room between the frame and the rear rocker cover to get the cover off EASILY????
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Cruiser
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RE: Need help identifying oil leak......
ORIGINAL: kyote
Looks like mine is the rocker cover leaking.. now.. I wanna know if this is going to be a PITA like it was on my sporty... is there enough room between the frame and the rear rocker cover to get the cover off EASILY????
Looks like mine is the rocker cover leaking.. now.. I wanna know if this is going to be a PITA like it was on my sporty... is there enough room between the frame and the rear rocker cover to get the cover off EASILY????
Ultimate HDF Member
Joined: Feb 2006
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From: TX
RE: Need help identifying oil leak......
Mark it's kinda hard to see in those pics...
If you look with a flashlight at the side of the head gasket, does it look like the gasket is wet or dry?
You should be able to follow the oil from top to bottom or front to back & determine the general source of teh leak. While rocer boxes are certainly more prone to leaking than head gasket, anything is possible. Typically, you would hear a head gasket leak & your CCP's sound good.
If you look with a flashlight at the side of the head gasket, does it look like the gasket is wet or dry?
You should be able to follow the oil from top to bottom or front to back & determine the general source of teh leak. While rocer boxes are certainly more prone to leaking than head gasket, anything is possible. Typically, you would hear a head gasket leak & your CCP's sound good.
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