gixxer overheated, ideas - Chicagoland Sportbikes
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post #1 of 27 (permalink) Old 08-13-2011, 03:28 PM Thread Starter
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gixxer overheated, ideas

My 600 overheated today and started pissing water and wetter today, temp was reading 250.
A little background. Coolant was recently done about 3 months ago by CP, used it on the street and track, no problems. Bike sat for about 2 months due to injury. Rode it on the street a few times over the last week. Today after riding about 30 mins noticed the temp got up to 230 and climbing about 1 block from home. Once in front of my garage it was about 245/250 and the coolant light came on. I shut the bike off right away and pushed it in the garage. Had my lid on so I could not hear if the fans were on. Pulled off my lid and removed my earplugs and the radiator sounded like a big pot of boiling water, bubbling and burping. All the while it was pissing fluid from the overflow hoses. Quick look with a flashlight did not show any coolant coming from anywhere else. Checked the fuse for the fan and it is good. So any ideas what could be wrong or where to start? Just came all of a sudden, no heat problems before. Pump, stat, pump, air in the system from lay down, fans?? Looked at the oil window, now milky color head gasket signs.

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post #2 of 27 (permalink) Old 08-13-2011, 03:30 PM
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your fan isn't running.

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post #3 of 27 (permalink) Old 08-13-2011, 04:21 PM
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either what vcook said or maybe got some air in the system from the crash.
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post #4 of 27 (permalink) Old 08-13-2011, 04:31 PM Thread Starter
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Thanks guys. So should I fill the fluids back up to their levels and let the bike warm up, if it hits 220 without the fan going on then replace the fan? Or would it be harmful to let it get hot without a fan again, just buy the fan and put it on then heat cycle it?

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post #5 of 27 (permalink) Old 08-13-2011, 04:39 PM
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If you laid it down on the right side, the radiator cap might have been hit and bent just enough to ruin the seal and let air in. Happened to kims and caused the fluid to boil out.

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post #6 of 27 (permalink) Old 08-13-2011, 04:55 PM
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If the fan's not running, it could be either the fan motor or the thermoswitch. I wouldn't start buying parts without doing some tests on both: the service manual should explain how. Getting up to 240˚ or so for testing purposes won't hurt anything, but keep a sharp eye on it and try not to let it boil out.

Definitely fill the cooling system up and bleed out the air, before testing anything. If you do overheat in the course of testing, things will go better if there's water in there to boil out. And, that may be enough to solve the problem.

Simple things first: is the radiator clean?

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post #7 of 27 (permalink) Old 08-13-2011, 05:06 PM
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Before you do anything, check the fuse box under your seat for blown fuses.

I had my gsxr overheat once when the fan wasn't running, ended up being a blown fuse.

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post #8 of 27 (permalink) Old 08-13-2011, 05:25 PM
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I think most of the likely causes have been covered:

Bent radiator filler or damaged radiator cap
Fan defective or fan blades bound against radiator.
Fan switch (thermostatic switch on right side of radiator) disconnected/defective
Fan fuse blown

it's likely to be one of those. With a properly filled cooling system, the fan should come on before the temp gauge shows 220 degrees.

Many models of GSXr600 have a separate fan wire from the ignition switch as well. You might check for the presence of 12 volts on one side of the thermostatic switch when the bike key is on. If it's not there, then fuse or wiring is an issue. It the 12V is there, then it's the fan or the thermostatic switch. Use a clip lead to jump the wires connected to the thermostatic switch. If the fan runs, then it's the switch. If it doesn't then most likely the fan is bound up or defective.

Definitely need to get this fixed, though.

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post #9 of 27 (permalink) Old 08-13-2011, 05:48 PM Thread Starter
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Holy shit, not going to believe this. See Pic. Someone or somehow the connector was disconnected ?? It snapped it right back on and it clicked very securely. How in the hell could this have happen? The crash couldn't have popped it off I wouldn't think I live in a condo with a secure underground lot. Anyhow, happy it was just that. Now, to replace the lost fluid can I just add it to the plastic reservoir? Just add it or do I have to add it while the bike is running?
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post #10 of 27 (permalink) Old 08-13-2011, 05:53 PM
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Your gixxer is self destructing. Further proof that they suck.

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post #11 of 27 (permalink) Old 08-13-2011, 06:37 PM
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I win, it was the fan!! I'll send you an invoice in the mail.

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post #12 of 27 (permalink) Old 08-13-2011, 07:00 PM Thread Starter
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Vcook is the gixxer god. thanks man.

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post #13 of 27 (permalink) Old 08-13-2011, 07:24 PM
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Not a bad thing to change the thermastat while your at it.

it's not the fall that kills you, it's that sudden stop
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post #14 of 27 (permalink) Old 08-13-2011, 07:48 PM
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Those connectors are supposed to latch together. It must have been knocked loose in the crash.

Wait until the bike is completely cool. Then open the radiator, and add fluid until it is completely full. Close Radiator and then add to the Full Cold line on the overflow bottle.

Start bike and run until it gets to 220 or until fan comes on. Let cool completely (this will take a lot of time, don't rush it). Open radiator and add until it's full again. Add to the overflow bottle until it's at the Full Cold line.

ride it for a couple of weeks, then recheck it.

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post #15 of 27 (permalink) Old 08-13-2011, 09:45 PM
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I'm confused...so there is no other issue other than the fan being disconnected? My GSXR didn't even have fans on it and never overheated.
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post #16 of 27 (permalink) Old 08-13-2011, 09:57 PM Thread Starter
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Quote:
I'm confused...so there is no other issue other than the fan being disconnected? My GSXR didn't even have fans on it and never overheated.
maybe because i was on the street? stop and go makes more heat than on the track where you have lots of airflow going through the radiator constantly.

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post #17 of 27 (permalink) Old 08-13-2011, 10:28 PM
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Quote:
Originally Posted by under200 View Post
maybe because i was on the street? stop and go makes more heat than on the track where you have lots of airflow going through the radiator constantly.
I rode my trackbike on the street too :P LOL
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post #18 of 27 (permalink) Old 08-14-2011, 10:05 AM
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In traffic on a hot day they overheat pretty quick.

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post #19 of 27 (permalink) Old 08-14-2011, 01:31 PM
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post #20 of 27 (permalink) Old 08-14-2011, 08:38 PM
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Never take your bike to the dealer! Glad you figured it out. A lot of people don't really know how the cooling system works on their bikes. Air needs to go through the radiator to cool the hot fluid circulating in it from around the engine. The cooled air recirculates back to the engine and so on. There are only two ways to get air through the radiator. Ride it, or the fan will pull air through. If you are riding it and it is getting hot, your fan is irrelevant at that point, assuming you are not in stopped traffic, but actually moving. If you are stopped, the fan will pull air through, but not at the same rate as when you are moving, so usually on a hot day it will just prolong the temperature climbing until it eventually overheats. Bikes like to move, and not sit.
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post #21 of 27 (permalink) Old 08-14-2011, 10:07 PM
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Quote:
Originally Posted by Chicago Performance View Post
Bikes like to move, and not sit.
and Gixxers seem to move faster than others!!
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post #22 of 27 (permalink) Old 08-15-2011, 08:46 AM Thread Starter
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Thanks again everyone, Vcook for diagnosing the problem without seeing it and Craig for for the tips on filling it back up. Did it all yesterday and it is good as new. As soon as 220 hits the fan goes on and the temp drops, just like it was designed to do.
Have to mention the quirky design that Suzuki made on the coolant bottle. It does not have a level line on the side of the bottle once you take the plastics off. Instead it is on the inside of the bottle and can only be viewed from the inside cutout on the cowling by the front tire. Took me 15 mins to find this. The service manual had a pic of the cutout and bottle level but did not once mention where it was. Dumb luck that I found it eventually.

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post #23 of 27 (permalink) Old 08-15-2011, 09:02 AM
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Quote:
Originally Posted by Nexus View Post
and Gixxers seem to move faster than others!!
.... in a vertical drop from an airplane maybe...

#19
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post #24 of 27 (permalink) Old 08-15-2011, 09:07 AM
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Quote:
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.... in a vertical drop from an airplane maybe...
Ooh, airlifted Gixxers? Drop one my way!

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post #25 of 27 (permalink) Old 08-23-2011, 04:34 PM
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post #26 of 27 (permalink) Old 08-23-2011, 04:40 PM
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Quote:
Originally Posted by Germany View Post
.... in a vertical drop from an airplane maybe...
Gixxers <>= 1098

Quote:
Originally Posted by under200 View Post
Have to mention the quirky design that Suzuki made on the coolant bottle. It does not have a level line on the side of the bottle once you take the plastics off. Instead it is on the inside of the bottle and can only be viewed from the inside cutout on the cowling by the front tire. Took me 15 mins to find this. The service manual had a pic of the cutout and bottle level but did not once mention where it was. Dumb luck that I found it eventually.
You have to look from the opposite side down through the triples or at some weird angle from what I remember. It is a weird design.
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post #27 of 27 (permalink) Old 08-23-2011, 04:44 PM
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Come on you guys, you know the big gixxer is fast and good. and Dave I love Ducs man but you have a bad case of Gixxer envy, somebody give him one, but first paint it red, then put those moto-italia "stickers on it" or maybe Desmoceddici. Whatever works. I miss my speedy rooster. Yes busas do fly!
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