my coolant level sits about 1+" below the seam of the reserve tank, i think the seam is the proper level when hot, thats what it seems to say anyways.

i have toped it off and it just pukes it out back to the lever that is 1+" or so below that seam. where does everyone elses coolant level sit at?

i have a couple of ideas, one is i have a leak, the other it maybe since i rev it alot higher it pushes a little more out and just wants to run lower than stock.

how about this one? if i never get over 190deg should i have ALOT of presure in the coolant system? i went for a hard but quick test drive and there was alot of presure on the hoses but the temp was still very low, like 180. hmm, i hope i dont have a head gasket leak or something sucky like that.

 

Ewwww, pressure in the coolant system like you described kinda sounds like a bad head gasket or one going bad. If your gaskets are good and the truck isn't overheating how high you spin the motor should have no effect on coolant level.

My coolant sits at the seam and stays at the seam all the time.

Hope you didn't blow a gasket with the juice.

Maybe you should get a test kit to see if you have combustion gas contaminated coolant. Check your local good auto parts store.

OR

Get one of these deals and pressure test your cooling system. If the gasket isn't bad enough I don't know if it would show with the low pressure from that pump though.

http://www.eastwoodcompany.com/itemd...6138&Dep_Key1=

 

let me correct what i said above, the corect level is at the seam cold, and i am about 1" below that seam when cold. a little lower when hot. i am going to pull my plugs and see if any of them look odd.

 

Mine sits at 1" above the seam when cold. Not sure when hot.

If it doesn't ever go below 1" below the seam, It can't be leaking, right?

 

Here's where mine sits ... This is with a cool motor I think.

http://bettie.homeip.net/atvpics/tru...n/100_0675.JPG

It kept going down for a little while, but I would add a little here and there. I chauked it up to the coolant system burping the air bubbles out of the motor when I had it apart.

 

grrrr, it is leaking. i looked at my plugs and sure enuff there was one that was slightly diferent. put 120psi to that cylinder and the presure started building in the cooling system.

what did i do wrong? i pulled the motor apart put in the cam, head studs, valve springs, scraped the carbon out of the chambers and cleaned the rest of the head surface with a paper towel and some brake cleaner.

i used the molly lube that came with the head studs, torqued them as directed. it didn't say to retorque them so i didn't.

i suppose i should pull them both off and get them surfaced, i need a good seal with what i have planed. i just rechecked a couple of the bolts that i could get to and they are still right where i tq them to.

check this thread out >> https://ls1tech.com/forums/showthread.php?t=152287 , i did put those cometics in there, i dont know if they were the HP's or not.

 

Check the junctions of the heater hoses and the heater core.Don't assume it's the motor,If you've pulled the motor a couple of times it really could be leaking at the joints and sealing when the motor heats up and expands them and the heater cores are plastic.If it's the core you would get a sweet smell in the cab and fog the windows.If it's a head gasket the chamber on that cylinder will be real clean.

 

I talked to the guys at Thunder when I was getting new gaskets. He told me that unless I had the block and heads surfaced properly, that I should go with the stock MLS gaskets, otherwise it would leak.

You may try replacing the gaskets. If you have head studs, it wouldn't be that much trouble.

 

Check the bottom of the radiator. When I bought my truck new, the same thing would happen. I brought the truck in 3 times before the leak in the lower left area of the radiator was found. When the truck was cold, it would not leak. Nothing was found on the ground or engine compartment. When the truck was hot, the radiator would expand thus loosing coolant. Hope this helps, it was pressurized twice, before finding the small expansion hole. The third time I brought it in, the dealer ship looked at it while the truck was hot.

 

thanks for the leak ideas but it is definately the head gasket.

now check this out. seth at cmotorsprots is telling me to drive it a little more before i pull it apart, he said about 1/2 of the cometics they put in leak for a day or so, mine has been leaking for longer but he still thinks i should put it thru a few more heat cycles before i pull it apart. going to retorque the head studs too just for fun.

seems kind of odd that they can seal up but i guess that isn't all that uncomon for the cometics, he also said if it does seal up it wont be a weak link, once they seal they seal well.