Oil in Coolant Different (I promise) - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Engine / Exhaust / Cooling
\ From the radiator, through the case and out
the exhaust. If it has to do with the cooling,
engine or exhaust, discuss it here!

 
LinkBack Thread Tools Display Modes
post #1 of 3 (permalink) Old 02-28-2020, 11:52 AM Thread Starter
Senior Member
 
MSattler's Avatar
 
Join Date: Jun 2019
Location: Iowa
Posts: 180
iTrader: (0)
 
Oil in Coolant Different (I promise)

So I just purchased about $800 in parts to get the Kawasaki back on the road, after I laid it down going 5mph, due to original tires. I am worried that I could be wasting all of these parts, though. It is an 86 that had sat for at least 20 years, before I picked it up for $300. The fluids had sat for that long, so almost everything looked like oil (brake fluid, coolant... even the oil looked like oil!). The bike never got hotter than the normal range, but before I flushed the coolant, I had noticed that the reservoir looked like it was full of pus colored oil. It took two attempts to get all of the sludge out of the engine coolant weep holes, but I finally got the drains on the block to drain. Again, it was full of white pus colored sludge. I flushed the system a couple of more times, and the reservoir looks better, but the new coolant still looks kind of milky. Again, it never got anywhere overheating, despite city driving in August. When I took off a couple of the coolant lines, they were milky as well. I cleaned the metal parts, but I left the original hoses on. I will go to auto zone and pick up some new hoses, but the fact that the milky sludge is still in the tank is concerning. A couple of key notes; the metal pipe that goes to the rear cylinder on the left side of the bike leaks coolant (small dribble), and the second bolt on the head towards the rear of the bike on the first cylinder leaks oil. I bought some black rtv to seal that up once it gets warmer, before painting the engine. Iím wondering if this is a concern, since the temperature seems unaffected. There is not coolant in the oil, however. Thoughts? Any advice would be great

PS - The coolant reservoir is also cracked, if anyone has a spare for purchase!

'08 Road King Classic
'86 VN750:
Ear Shave, K&N Filters, Mean Streak Seat, AGM battery, Blue Wire Mod, Pick-up Coil Mod, Timing Advance Mod, NGK Iridium Plugs and Wire, LEDs, Bed Liner Paint Job, Over-sized Tires, New Brakes, New Fork Seals, Progressive Springs, Kick Stand Mod, Highway Pegs, 40/140 No Shims, Vance & Hines Exhaust, New Grips, Extra Wide Emgo Handle Bars
John 8:44, REV 2:9, REV 3:9 - If you were kicked out of 109 bars, would you think the problem was you, or the 109 bars?

Last edited by MSattler; 02-29-2020 at 06:03 AM.
MSattler is online now  
Sponsored Links
Advertisement
 
post #2 of 3 (permalink) Old 02-29-2020, 04:44 PM
Members who have donated towards server costs
 
Join Date: Nov 2007
Location: Chandler, Arizona
Posts: 3,019
iTrader: (0)
 
Mechanical things like motorcycles don't take well to sitting. Things that were made to move need to be moved. Otherwise they quickly start to deteriorate. Iron and steel rust, aluminum and brass corrode, rubber and plastic rot. Seals dry out and crack, rings rust in the cylinder bores, moisture condenses inside things and speeds up the rust/corrosion process. Oil and coolant mixed together make glue, which plugs everything up. I would drain the oil and the coolant, flush the cooling system as best you can with distilled water only (NO automotive flushing chemicals) put in new oil and distilled water only. NO ethylene glycol. If the engine runs, it is important to prevent plugging of the oil passages. The two most likely places coolant and oil can mix are a blown head gasket (either cylinder or both) or the mechanical seal in the water pump. I think someone here had that problem not long ago. Are you sure there is no coolant in the oil? it would show up as a milky white substance in the oil sight window. However, simple water condensation in the oil can look the same, but it quickly burns off. Cracked coolant reservoirs are not uncommon. I've been through at least 4 of them on 2 bought new Vulcan 750s.

I am a motorcyclist, NOT a biker.


1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
2002 Vulcan 750 parts bike
1994 Yamaha XT225 parts bike
VN750Rider/Jerry is offline  
post #3 of 3 (permalink) Old 02-29-2020, 06:04 PM Thread Starter
Senior Member
 
MSattler's Avatar
 
Join Date: Jun 2019
Location: Iowa
Posts: 180
iTrader: (0)
 
Thank you for the response. With all of the repairs to the pawl spring, Iíve drained the oil several times already. Luckily it was just oil, even the first time I changed the oil after sitting for 20 years. I am hoping itís not a head gasket, but doesnít overheating become a problem with the head gasket? Could it just be residual old coolant that is being worked loose as everything heats back up? It seemed to get less and less with the two or three flushed last summer


Sent from my iPhone using Tapatalk

'08 Road King Classic
'86 VN750:
Ear Shave, K&N Filters, Mean Streak Seat, AGM battery, Blue Wire Mod, Pick-up Coil Mod, Timing Advance Mod, NGK Iridium Plugs and Wire, LEDs, Bed Liner Paint Job, Over-sized Tires, New Brakes, New Fork Seals, Progressive Springs, Kick Stand Mod, Highway Pegs, 40/140 No Shims, Vance & Hines Exhaust, New Grips, Extra Wide Emgo Handle Bars
John 8:44, REV 2:9, REV 3:9 - If you were kicked out of 109 bars, would you think the problem was you, or the 109 bars?
MSattler is online now  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Once registered, your User Name"cannot be changed". We can make exceptions within 7 days, but after that, it is set in stone.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome