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Thread: coolant blowout

  1. #61
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    Default Re: coolant blowout

    I think Spencer has done very well keeping up and supporting your thread V.C.!

    The exhaust bolts I lube then if you snug with a 6" allan key you should be good.

    As we mentioned a check of the pump and a rad flush would be a good move, then as mentioned a stop leak is a good idea for those old cast aluminum
    systems.

    Not worry about asking us questions we enjoy spending you money from a distance

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    Default Re: coolant blowout

    Quote Originally Posted by Patch View Post
    I think Spencer has done very well keeping up and supporting your thread V.C.!

    The exhaust bolts I lube then if you snug with a 6" allan key you should be good.

    As we mentioned a check of the pump and a rad flush would be a good move, then as mentioned a stop leak is a good idea for those old cast aluminum
    systems.

    Not worry about asking us questions we enjoy spending you money from a distance
    Thanks patch got the exhaust fixed, and it isn't leaking at all anywhere. But it just did something it has never done. Was going up to the store about 5 miles away halfway there the temp gauge hadn't left the very bottom then all of a sudden it started climb all the way to the top quickly. So I stopped and the radiator was steaming a bit for a few seconds. What I've done so far is fix the hose, flush the rad and change the tstat. Would a water pump cause that to happen? or could it be something more serious?

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    Default Re: coolant blowout

    I seriously doubt if it's more serious. It's either the thermostat won't open, defective, installed backwards, wrong one, or the water pump finally gave out. I personally would start with removing the thermostat like you did before and see what happens. Do you have the coolant petcock turned the right way? You'll be a pro at this soon...

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    Default Re: coolant blowout

    Quote Originally Posted by SpencerPJ View Post
    I seriously doubt if it's more serious. It's either the thermostat won't open, defective, installed backwards, wrong one, or the water pump finally gave out. I personally would start with removing the thermostat like you did before and see what happens. Do you have the coolant petcock turned the right way? You'll be a pro at this soon...
    I didn't think you could install it backwards. I'm pretty sure the petcock is the right way. The one on my bike is really chewed up, someone must have tried to turn it without loosening the lock screw. I have been setting it as ON being with the writing upwards with the end of the end of words facing 2 oclock. And OFF the writing is upside down with the start of the words facing 2 oclock. The tstat I got was the exact size. I dropped it in with the spring end down

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    Default Re: coolant blowout

    Quote Originally Posted by Venture Capitalist View Post
    I didn't think you could install it backwards. I'm pretty sure the petcock is the right way. The one on my bike is really chewed up, someone must have tried to turn it without loosening the lock screw. I have been setting it as ON being with the writing upwards with the end of the end of words facing 2 oclock. And OFF the writing is upside down with the start of the words facing 2 oclock. The tstat I got was the exact size. I dropped it in with the spring end down

    "Thanks patch got the exhaust fixed, and it isn't leaking at all anywhere. But it just did something it has never done.
    Was going up to the store about 5 miles away halfway there the temp gauge
    hadn't left the very bottom then all of a sudden it started climb all the way to the top quickly. "
    OK we'll start here: the thermo switch is an inline a unit (at least in my manual) when the engine heats up the flow from the pump drive the hot fluid to the rad and past the switch which is in fact a resistor which alows for more curent to flow thru and feed the meter. If as you say the meter was disturbed then there remains a problem to address? perhaps
    So I stopped and the radiator was steaming a bit for a few seconds. ​The rad was still cold as in your mild winter cold, so as it warmed it may have just melted some ice that had accumulated from condensation? Then as it evapped the steam you saw diapered! likely
    If the engine is overheating then the rad will boil over and the engine will ping like that of a car with loss of power.

    "What I've done so far is fix the hose, flush the rad and change the tstat. Would a water pump cause that to happen? or could it be something more serious? " Yes the pump will cause over heating issues.

    Now important to run the correct 50/50 mix or slush will result on the rad, the sudden input of hot coolant transfer will cause a thermo shock and the rad can split.
    The bypass sounds like you need to verify it is in the correct position, take a look at how it made or shows in the book, mine show OFF not onand there is an alignment mark at 2 o'clock. It needs to allow a constant flow this help control the thermo cycling by maintain a closer consistent combustion temperature near the combustion chambers. In other words we don't want the combustion chamber mass to keep cycling thru ups and downs!

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    Default Re: coolant blowout

    Quote Originally Posted by Patch View Post
    "Thanks patch got the exhaust fixed, and it isn't leaking at all anywhere. But it just did something it has never done.
    Was going up to the store about 5 miles away halfway there the temp gauge
    hadn't left the very bottom then all of a sudden it started climb all the way to the top quickly. "
    OK we'll start here: the thermo switch is an inline a unit (at least in my manual) when the engine heats up the flow from the pump drive the hot fluid to the rad and past the switch which is in fact a resistor which alows for more curent to flow thru and feed the meter. If as you say the meter was disturbed then there remains a problem to address? perhaps
    So I stopped and the radiator was steaming a bit for a few seconds. ​The rad was still cold as in your mild winter cold, so as it warmed it may have just melted some ice that had accumulated from condensation? Then as it evapped the steam you saw diapered! likely
    If the engine is overheating then the rad will boil over and the engine will ping like that of a car with loss of power.

    "What I've done so far is fix the hose, flush the rad and change the tstat. Would a water pump cause that to happen? or could it be something more serious? " Yes the pump will cause over heating issues.

    Now important to run the correct 50/50 mix or slush will result on the rad, the sudden input of hot coolant transfer will cause a thermo shock and the rad can split.
    The bypass sounds like you need to verify it is in the correct position, take a look at how it made or shows in the book, mine show OFF not onand there is an alignment mark at 2 o'clock. It needs to allow a constant flow this help control the thermo cycling by maintain a closer consistent combustion temperature near the combustion chambers. In other words we don't want the combustion chamber mass to keep cycling thru ups and downs!
    Ok, I've checked and triple checked the alignment on the drain valve and yes I have been running it with it in the off position which the book says. The tstat does go in the the large spring end facing the ground correct ? I'm not 100% sure but pretty close that's the way I took the old one out. You know how when you check a car to see if the water pump is working you can just start it with the rad cap off and when it heats up see if the water starts circulating. I suppose the same should be true for a bike? I was look at the manual on water pump disassembly. It says to take off the gear and the impeller shaft and remove all the deposits. I could go that far do you think that might help? I don't have one of those circlip tools but you can use a screwdriver can't you? I would want to go as far as the book on disassembly talks about, into the seals and everything, the seals are probably good anyway, I don't have any oil in my water or any water in my oil and no leaks anywhere

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    Default Re: coolant blowout

    You seem correct in all your assumptions. I personally have never had any of this apart on my bike, so I certainly don't want to give bad advise. Seems the first and easiest check is to take out the TStat and take it for a drive. Seems when you put the new one in is when your new issue began ???

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    Default Re: coolant blowout

    Quote Originally Posted by Venture Capitalist View Post
    Ok, I've checked and triple checked the alignment on the drain valve and yes I have been running it with it in the off position which the book says. The tstat does go in the the large spring end facing the ground correct ? I'm not 100% sure but pretty close that's the way I took the old one out. You know how when you check a car to see if the water pump is working you can just start it with the rad cap off and when it heats up see if the water starts circulating. I suppose the same should be true for a bike? I was look at the manual on water pump disassembly. It says to take off the gear and the impeller shaft and remove all the deposits. I could go that far do you think that might help? I don't have one of those circlip tools but you can use a screwdriver can't you? I would want to go as far as the book on disassembly talks about, into the seals and everything, the seals are probably good anyway, I don't have any oil in my water or any water in my oil and no leaks anywhere
    As You see I've done a bit of cold weather riding over the years

    If you have already used a rad flush then the deposits should be gone.

    Yes the spring points down.

    At the moment and from this distance I am not certain that the Tstat is bad, but you could do as Spence mentioned run it without, leaving the bypass alone.

    Again from here, we are trying to accept that 2 heat coils are failing, one on the rad and the other on the new Tstat? Cause if the stat is failing then you will have a boil over at the expansion tank, right?!

    And I don't know if I trust the reading of the gauge at this point after you mentioned you had an issue?

    Make sense? What cha think?
    Attached Thumbnails Attached Thumbnails trip 0102.jpg  

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    Default Re: coolant blowout

    yep I think i'll got take it out and give it a try, thanks spencer. my temp gauge does work patch it's just that when I took the speedo apart to grease the cable I put the needle onto the spindle in a little lower position so I didn't go as high but it had never just shot up all at once like that. Is that your Suzuki, looks kinda like a venture. is that cold weather that's causing that steam or a blown head gasket?

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    Default Re: coolant blowout

    No man, that just cold weather up in Northern Ontario, where the Bear rent motel room to stay warm

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    Default Re: coolant blowout

    Just a thought, but I've seen my Venture do this low-temp/blast off thing after mucking around with hoses and t-stats. Mine was an air pocket that once it burped out, all I had to do was top off the antifreeze and all was good.
    Fun reading, lots of gained knowledge for you in a short time. Cheers.

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    Default Re: coolant blowout

    Quote Originally Posted by flyday58 View Post
    Just a thought, but I've seen my Venture do this low-temp/blast off thing after mucking around with hoses and t-stats. Mine was an air pocket that once it burped out, all I had to do was top off the antifreeze and all was good.
    Fun reading, lots of gained knowledge for you in a short time. Cheers.

    Yes sir you are correct and I did forget to mention that.
    50/50 will boil at 223* but under 15 lbs it will be closer to 268* (3* per pound)
    The combustion heat is above 1000* but, is not just a local area- as much of it is conducted thru piston then oil cooling, valves then mass sink. So, the coolant can jump several degrees around the top combustion area and an air pocket will super conduct and cause an additional expansion pressure increasing the size of the pocket (the quirk being air is compressible fluid not): the pump will continue to push the pocket at a slower rate as the fluid under pressure will follow the basic laws of ( pressure wants to remain equal and volume wants to maintain) which will for a time stall/trap the pocket movement. Hmm go figure

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    Default Re: coolant blowout

    Quote Originally Posted by Patch View Post
    Yes sir you are correct and I did forget to mention that.
    50/50 will boil at 223* but under 15 lbs it will be closer to 268* (3* per pound)
    The combustion heat is above 1000* but, is not just a local area- as much of it is conducted thru piston then oil cooling, valves then mass sink. So, the coolant can jump several degrees around the top combustion area and an air pocket will super conduct and cause an additional expansion pressure increasing the size of the pocket (the quirk being air is compressible fluid not): the pump will continue to push the pocket at a slower rate as the fluid under pressure will follow the basic laws of ( pressure wants to remain equal and volume wants to maintain) which will for a time stall/trap the pocket movement. Hmm go figure
    Great explanation!

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    Default Re: coolant blowout

    well, I was about to just go take the new tstat out and see what happened, but before I did I thought of putting the old one in a pan of boiling water and it opened up and closed when I took it 3 times so I put that back in. I didn't ride it just fired it up and watched the gauge and it came up nice and slowly like it used to. So what could have caused the hose to bust in the first place? While I was watching the temp needle I kept checking to see if the fan had kicked on but it never did. I let it get to about halfway between the halfway mark and the red. Should it have come on by then? At least now it's back to how it was before I blew the hose.

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    Default Re: coolant blowout

    Quote Originally Posted by flyday58 View Post
    Great explanation!

    Thank you but, you all know Puc pulled me out of my shell so ... thanks buddy for pushing me to share more more often...

    V.C. sometimes we just need to step back and figure where we assumed too much! I know I've had to many times and, after 10s of K$ spent ,,,so that is all a part of the sport!
    Last edited by Patch; 02-19-2020 at 03:11 PM.

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