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Paris2 |
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Paris2 Nearly there...
Joined: 10 Apr 2011 Karma :
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Posted: 13:40 - 14 Dec 2016 Post subject: Engine heat rising rapidly FIXED |
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Firstly, I know Daytona's are famed for overheating
However my bike seems to heat up very quickly when not moving, it was almost by 1 degree a second this morning. So once I had pulled off the motorway, sitting at the lights for 30 seconds and the fan was on
The fan comes on at 104 as expected, but at that point it's fighting a losing battle and it never seems to decrease. More than once I have had to pull over once the temp had gone north of 120.
What do? I don't think it was always this bad. ____________________ Current Ride: Daytona 600
Last edited by Paris2 on 09:57 - 02 Jul 2018; edited 1 time in total |
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Rogerborg |
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Rogerborg nimbA
Joined: 26 Oct 2010 Karma :
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Posted: 13:43 - 14 Dec 2016 Post subject: Re: Engine heat rising rapidly |
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Flush out the radiator and cooling jacket and renew the coolant. ____________________ Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike |
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weasley |
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weasley World Chat Champion
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Pjay |
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Pjay World Chat Champion
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Azoth |
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Azoth Brolly Dolly
Joined: 07 Jul 2016 Karma :
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Posted: 14:42 - 14 Dec 2016 Post subject: |
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Funnily enough, a bike mechanic told me never to buy one however attractive the price on Ebay, because he sees them a lot in his workshop.
With any luck, it's something minor. Try the basic things first. Your fan's coming on, so you can strike the thermostat, fan and fan switch from your list. Next, is the coolant circulating? The circulation of the coolant can be impeded by blockages (which could be anywhere, but tend to be in the radiator or filter). Start it up, wait until the engine gets hot, then put your hand on the radiator. Any major differences in temperature across its surface? If so, system overhaul time, with coolant flush upward through the system. No problem there? Visually inspect and if necessary blow out the coolant filter. Still not circulating? Check the pump is working properly (open the radiator cap and check that coolant is visibly flowing when the engine is running).
If all that checks out, flush the system as per Haynes, and replace all the coolant, taking special care to avoid airlocks. There's a bit of a technique to this, but you need to top it up at various engine temperatures, burping the air from the system and from all lines, and get the reservoir level right between min and max levels.
After this, there should be no reason for any overheating, unless you have a serious fault. If you still get overheating, check that it hasn't spat out its coolant from overflow and sucked in air. If that's happening, it's a whole new can of worms... ____________________ Safety in numbers |
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Paris2 |
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Paris2 Nearly there...
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Paris2 |
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Paris2 Nearly there...
Joined: 10 Apr 2011 Karma :
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Posted: 15:56 - 14 Dec 2016 Post subject: |
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Thanks for the help. I will do the recommended fault finding and go from there ____________________ Current Ride: Daytona 600 |
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MCN |
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MCN Super Spammer
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stinkwheel |
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stinkwheel Bovine Proctologist
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pudder |
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pudder Scooby Slapper
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P. |
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P. Red Rocket
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Azoth |
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Azoth Brolly Dolly
Joined: 07 Jul 2016 Karma :
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Posted: 18:15 - 14 Dec 2016 Post subject: |
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By all means, check the thermostat as well. Or just try running it without a thermostat, and see if that improves matters.
The thermostat (also) flips the fan switch. He mentioned that the fan is working and it begins to operate, but that this doesn't cool the bike down. Naturally, this doesn't mean the thermostat is working correctly, but at least it's opening at a certain point sufficient to flip the switch. If the thermostat isn't kicking in at the right temperature, then you won't get sufficient coolant flow to the engine. The problem occurs when he's sitting at the traffic lights. It's at idling speed, i.e. when the thermostat doesn't need to open up the flow of coolant to the engine.
So, for the thermostat to be the cause of his woes, it would have to remain stuck shut as the bike gets hotter, until it reaches a point of no return, and when it eventually pops open, the free flow of water no longer has any effect. It's possible but it doesn't sound right to me. I would have thought he has a blockage or is short of coolant because of an airlock (perhaps caused by a leak in the system or something worse). But sure, test everything including thermostat. ____________________ Safety in numbers |
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P. Red Rocket
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Matt B |
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Matt B World Chat Champion
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P. |
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Azoth |
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Azoth Brolly Dolly
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Matt B World Chat Champion
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Azoth Brolly Dolly
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Evil Hans World Chat Champion
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Azoth |
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MarJay |
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MarJay But it's British!
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MarJay But it's British!
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Azoth |
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Azoth Brolly Dolly
Joined: 07 Jul 2016 Karma :
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Posted: 19:27 - 14 Dec 2016 Post subject: |
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MarJay wrote: | BING Congratulations! You win this week's award for the person who *sounds* like they know what they are talking about, but actually has no clue!
Your prize? The derision and condescension of your peers! |
Wow! I'm over the moon. I appreciate it. I didn't know I had any peers.
Last time someone got a prize like that, a motorcyclist bled to death, unfortunately.
What happened was, there was an accident and a biker came off his bike. A couple of other motorists stopped to help. The biker said, "I think I broke my arm, can you take my helmet off please."
One of the motorists looked at him, saw he was bleeding (from his elbow), and said, "OK, but first let's staunch the bleeding."
The other said, "What! You idiot! You retard! You never take off a biker's helmet!"
Indignant, the other replied "Look who's talking, stupid old man who keeps having accidents and screwing up!"
The argument went back and forth. The biker bled to death.
True story. ____________________ Safety in numbers |
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Old Thread Alert!
The last post was made 7 years, 136 days ago. Instead of replying here, would creating a new thread be more useful? |
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