heat
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Joined: Aug 2008
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From: petersburg il
no t-stat, intake wont take one, rebuilt pump, both fans working, rad clear, all hoses new, coolant 50/50. havent tried new cap, but will get new one and see if that works. thanks for the info.
Thread Starter
Instructor
Joined: Aug 2008
Posts: 189
Likes: 0
From: petersburg il
heat
fans are tied to the fuel on, off switch and are always on when running. motor was rebuilt this winter, but had the same temp problem before the rebuild. coolent is not transfering from rad to over flow tank. the cap is on the fill tank not on the rad. i hope this helpfull. thanks
Thread Starter
Instructor
Joined: Aug 2008
Posts: 189
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From: petersburg il
heat
If the coolant is not transferring to the overflow tank, that would leave one to believe there is insufficient coolant in the system. With a full system, heated coolant will expand, and exit the block and radiator.
The only reason coolant is not transferring to the overflow tank is due to the lack of coolant in the system, allowing space for the expanded coolant.
Is the coolant level at the 'max' point in the fill tank? 'Max' meaning completely full to the point of overflowing into the overflow bottle.
If your system is 'closed', is the rad cap a closed system cap? What is the pressure rating on the cap?
Also, are you determining the temp by the digital gage? The gage may be providing an incorrect reading. You might find someone with a heat measuring gun, and compare readings.[/QUOTE]
Thread Starter
Instructor
Joined: Aug 2008
Posts: 189
Likes: 0
From: petersburg il
over heating prpblem
[14# cap is on the low side, which means the boiling point of coolant is a tad lower...... no problem.
i will get a new cap and a heat gun and try that, coolant is topped out thanks, i will get back with all of you after i try all of help thanks again for all the help
"..... if cap is bad would that cause over heating?" ........ If your system is a closed system, and your cap is not a closed system cap, yes, that would mean coolant would only flow one way.... out.
If the cap is correct for a closed system, and the gasket is damaged, air would enter the system negating the return siphon, and your fill tank level would be low.
Check the flow from the fill tank to the overflow bottle by slowly pouring/adding water at the fill neck. The added water should run to the overflow bottle. This would confirm a solid connection.
What is the coolant level in the fill tank after cool-down? If it is not at the full level, and no coolant has transferred to the overflow tank, then there may be a leaking hose, etc.[/QUOTE]
i will get a new cap and a heat gun and try that, coolant is topped out thanks, i will get back with all of you after i try all of help thanks again for all the help
"..... if cap is bad would that cause over heating?" ........ If your system is a closed system, and your cap is not a closed system cap, yes, that would mean coolant would only flow one way.... out.
If the cap is correct for a closed system, and the gasket is damaged, air would enter the system negating the return siphon, and your fill tank level would be low.
Check the flow from the fill tank to the overflow bottle by slowly pouring/adding water at the fill neck. The added water should run to the overflow bottle. This would confirm a solid connection.
What is the coolant level in the fill tank after cool-down? If it is not at the full level, and no coolant has transferred to the overflow tank, then there may be a leaking hose, etc.[/QUOTE]
