Jump to content

Recommended Posts

So I’ve got a drip that has been getting worse.  I just don’t know where it’s coming from.  The highest wet spot is by the spark plug but seems more wet down below.  Main point of drip is the front of the floorboard mount.  I don’t think it’s originating from the valve cover gaskets.  Got those in order...again.

4B76BB67-7107-493D-82D0-6CFC27CC8794.jpeg

E59478F0-9254-4C50-9F7B-4C9F01BEF7F9.jpeg

5102686E-BB70-49CC-A276-37E1DC52FEE4.jpeg

Link to post
Share on other sites

Off chance thought.  Is your oil level more than 1/2 the sight glass when bike is straight up? If the answer is yes, you may have oil leaking down from the breather. Another though would be that there might be a cover bolt that's not seated properly. These bolts are shoulder bolts and do not tighten onto the valve cover, they snug down on the shoulder which gives exact clearance needed for the valve cover gasket. If you added a washer or so to the bolt, it's done wrong and will leak.

  • Like 1
Link to post
Share on other sites
40 minutes ago, Marcarl said:

Off chance thought.  Is your oil level more than 1/2 the sight glass when bike is straight up? If the answer is yes, you may have oil leaking down from the breather. Another though would be that there might be a cover bolt that's not seated properly. These bolts are shoulder bolts and do not tighten onto the valve cover, they snug down on the shoulder which gives exact clearance needed for the valve cover gasket. If you added a washer or so to the bolt, it's done wrong and will leak.

Just drained the old oil but if memory serves correct it was over 1/2 full last year.  The PO only had it a week before selling because the CLASS was broke and he didn’t want to deal with it.  He said he added some sea foam to the crank so overfilled makes sense.

Link to post
Share on other sites

Looking at the pics of the valve cover gasket, it looks pretty worn and cracked. Did you start using synthetic oil in it? I started having leaks on an 86 I had once I started using synthetic in it after I bought it. The synthetic oil will clean sludge deposits and sometimes with older gaskets and then the sludge getting cleaned out of age cracks, they can start to seep.

Link to post
Share on other sites
2 minutes ago, Pasta Burner said:

He said he added some sea foam to the crank so overfilled makes sense.

That could be your culprit right there. Seafoam will clean sludge out of an engine as well.

  • Sad 1
Link to post
Share on other sites
Posted (edited)
13 hours ago, Squidley said:

That could be your culprit right there. Seafoam will clean sludge out of an engine as well.

Amazing the double edged sword.  I’m getting new OEM gaskets.  Covid had two orders of them cancelled on me over the past year because of warehouse and business shutdowns.  

Not sure what oil is in there, this is the first change of my ownership.

After digging in there yesterday I think a good degreasing will go a long way first to then start seeing where the problem recurs.

Edited by Pasta Burner
  • Like 2
Link to post
Share on other sites
Posted (edited)

Cleanup is a great idea so that you can see where the fresh stuff is coming from.

From the photo it looks like you have seepage in 3 places:  Somewhere up on top near the valve cover bolt and a couple places seeping down from the valve cover gasket.

If the bolt rubber grommets have shrunk with age, search the interwebs for "wintergreen oil alcohol recondition rubber".  Worked marvelously on my '93.

 

 

4B76BB67-7107-493D-82D0-6CFC27CC8794.jpeg.0cac51c28176473d318c6889e84809d2_LI.jpg

Edited by Bob K.
  • Thanks 1
Link to post
Share on other sites
16 hours ago, Bob K. said:

Cleanup is a great idea so that you can see where the fresh stuff is coming from.

From the photo it looks like you have seepage in 3 places:  Somewhere up on top near the valve cover bolt and a couple places seeping down from the valve cover gasket.

If the bolt rubber grommets have shrunk with age, search the interwebs for "wintergreen oil alcohol recondition rubber".  Worked marvelously on my '93.

 

 

4B76BB67-7107-493D-82D0-6CFC27CC8794.jpeg.0cac51c28176473d318c6889e84809d2_LI.jpg

Thanks. I’ll look for that Reconditioner.  
Two things I’ve discovered with this leak is one I put new oil in on Sunday let her warm up a bit and then positioned her in the garage on the center stand in prep for the new fork springs (that I just keep not getting to!!! Arrggg).  Monday morning there was only one little drip, by this afternoon only a tinsy bit more. So being upright vs the side stand my be a variable.  
Two as you mention the spot on top on the cover, I noticed Sunday evening the Front left carb boot is wet and that carb is not seated correctly in the lower boot, this could also explain the suction sound I’ve been hearing but chalked it up as normal as I’ve never heard another of these bikes to compare to.  I’m thinking fuel leaking from that carb running down the engine collecting grease and grime along the way making it appear as an oil leak.  Also when I went to clean my garage floor from where it had been dripping all winter it was gummy.

 

 

Link to post
Share on other sites
On 4/13/2021 at 7:22 PM, Pasta Burner said:

Thanks. I’ll look for that Reconditioner.

 

 

Maybe you can buy it, but the search will lead you to making your own by combining wintergreen oil with rubbing alcohol.  I believe I used 3 parts alcohol to 1 part wintergreen oil.  I soaked the items overnight in a mason jar.  If the rubber overexpanded, I'd let the piece sit for a day or so and it would decrease in size.  I used it on a couple dozen items when I did the big refurb a couple years ago.  Stored in a mason jar, I imagine it'll last for just about forever.

Link to post
Share on other sites

Interesting.  I like home made remedies.  Oddly it’s not leaking anymore.  Been in the center stand and I’m working on getting that carb seated.  Time will tell, and time for another beer to get this thing figured out.

  • Like 1
Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...