Page 2 of 2 FirstFirst 12
Results 16 to 19 of 19

Thread: Coolant boiling and pink sludge?

  1. #16
    apriliaforum newb
    Join Date
    Apr 2018
    Location
    Winters, CA
    Posts
    15
    Quote Originally Posted by amauri View Post
    Your radiator flange is damaged and not allowing the cap to hold pressure, had the exact same problem on a customer's bike last year.
    Looking closely at the radiator, it does seem to be slightly mushed inward, and I can feel a "lip" on the inner surface around the neck where it's slightly raised relative to the rest of the surface (Pic 1). I'm not sure if that's normal ... and my friend who helped me install it reminded me that when we got the part last year, it had been slightly mushed in shipping, but we couldn't exactly remember which area or how badly (and we didn't save any photos of it.)

    I also took the calipers out and in the front-rear direction, the upper area measured 28.2mm, while in the side-to-side direction in measured 27.6mm. I'm guessing that should be perfectly circular with a tolerance a lot less than 0.5mm.

    The bike-side of the upper portion also has about 0.1mm clearance from the radiator body, which may or may not be slightly dented there... I can't tell (Pic 2 & 4).

    Is there any way to fix this? Not sure I have the tools, other than making it worse with big ass channel lock pliers. Maybe a radiator specialist? Or just suck it up and order a new one?

    Pics for sanity checking... 'cause I am the worst motorcycle mechanic.

    https://imgur.com/a/0DSo2bx

  2. #17
    apriliaforum Junkie Rvee's Avatar
    Join Date
    Sep 2015
    Location
    NJ/NY
    Posts
    442
    50 degrees out and the tuono ran up to 246 coming back into the city, had to cut the engine at my last several lights. It's gotten ridiculous, this is not a properly functioning bike with how often this occurs on cool days.

    I pulled up to the garage and once I cut ignition, I hear some massive boiling. Look down and there is coolant all over the damn place.

    Click image for larger version. 

Name:	IMG_1252.jpg 
Views:	13 
Size:	533.5 KB 
ID:	377462

    The belly pan was filled up with several ounces. It took about 3-5 minutes to stop boiling.

    So far I have suggestions from friends that there is air in the system, or the thermostat is stuck. The factory coolant is still in the radiator and I haven't messed with it since buying the bike.

    I checked the cap, it appears to seal up nicely... I read in another thread about resting it on either side and squeezing some of the rad pipes. Is this with the cap off? Isn't this system "self bleeding"?

    What should I try prior to a dealer trip?
    '19 Husqvarna FS450
    '17 TV4 Factory
    '07 RSVR Factory (For Sale)

  3. #18
    apriliaforum expert
    Join Date
    May 2016
    Location
    Ohio
    Posts
    1,595
    Quote Originally Posted by Rvee View Post
    I read in another thread about resting it on either side and squeezing some of the rad pipes. Is this with the cap off? Isn't this system "self bleeding"?
    That's what i do ( called 'burping') when i flush out coolant and replace with distilled water/water wetter before track season, except i don't squeeze any radiator hoses.

    With bike running, cap off, tilt as far as possible to opposite side of radiator fill neck. That puts the fill neck at the highest point...kinda like having a bleeder on a brake caliper at the top.

    Fill fluid, let bike warm some more, burp again. Done.

    No idea if that's your problem though.
    Current rigs:

    '16 Tuono RR -street
    '13 RSV4 -race
    '13 Harley Davidson Night Rod Special
    '13 Yamaha WR450F
    '12 GSXR 600 - race
    '07 GSXR 750 - race x 2
    '03 KDX 200
    '17 Tao Tao Hellcat - pit bike

  4. #19
    apriliaforum Junkie Rvee's Avatar
    Join Date
    Sep 2015
    Location
    NJ/NY
    Posts
    442
    Quote Originally Posted by motoracerx View Post
    That's what i do ( called 'burping') when i flush out coolant and replace with distilled water/water wetter before track season, except i don't squeeze any radiator hoses.

    With bike running, cap off, tilt as far as possible to opposite side of radiator fill neck. That puts the fill neck at the highest point...kinda like having a bleeder on a brake caliper at the top.

    Fill fluid, let bike warm some more, burp again. Done.

    No idea if that's your problem though.
    Same procedure I've followed when replacing coolant on the RSVR. The bleeder screw on the second gen bikes at least provided an additional level of confidence that air was out of the system since coolant would issue from it. I will try shakefu's procedure here and try leaning it over farther than just kickstand lean prior to capping it.

    I honestly can't tell from the pictures he posted how the cap might be deformed if that is truly the issue. The previous thread Amauri linked to looked like a clear bend in the top of that filler. But assuming since mine has only boiled once and it was at 246 degrees that we may not have the exact same issue.
    Last edited by Rvee; Yesterday at 11:22 AM.
    '19 Husqvarna FS450
    '17 TV4 Factory
    '07 RSVR Factory (For Sale)

Page 2 of 2 FirstFirst 12

Similar Threads

  1. RSVR / TUONO R SAMCO Coolant Hoses and Clamp Kit - NIB
    By Sugarloaf11 in forum Aprilia Parts and Accessories for Sale / Wanted
    Replies: 4
    Last Post: 06-28-2016, 04:22 AM
  2. Cooling system pressure depends on coolant type and mixture
    By Xavi in forum RSVR and RSVR Factory (2004-2009)
    Replies: 5
    Last Post: 12-07-2012, 08:33 AM
  3. Coolant Topup and wheel nut size
    By tha-mask in forum 2008-2014 Mana 850 and Mana 850 GT-ABS
    Replies: 3
    Last Post: 07-01-2009, 01:38 PM
  4. Coolant type and level
    By klennop in forum Tuono 1000 R and Tuono Factory (2006-2010)
    Replies: 10
    Last Post: 04-02-2009, 01:29 AM
  5. Coolant System and Flush questions...
    By gyges_1 in forum RSV1000 Mille, Mille R, and Mille SP (1998-2003)
    Replies: 15
    Last Post: 10-08-2006, 11:16 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •