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Hello. I just picked up a 2012 HDX 700 prowler and so far I like it. Was changing the oil and found a lot of coolant in it. Long story short I've narrowed it down to head gasket or water pump. I don't think it's water pump seal because it would have to blow 2 seals and plus, I'd see coolant coming out sheep hole which I don't. So I ripped head off to replace head gasket. Tommy surprise the head gasket "looks" fine to me. No rips or tears or spots where I could see where coolant would come thru. I'm assuming it's just a bad gasket and not making a good seal. So before I put a new one on it and bolt it all back together I'm wondering if it's possible if the base gasket could be bad? Does anyone know if coolant runs through the base gasket? If not, I have no reason to inspect and replace it. But If coolant does pass through that gasket then I'm for sure gonna replace it just to be sure. Your help is appreciated ! ! Btw, my prowler has 2300 miles.....
 

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Welcome to the site! Only coolant passage is in the head. Base gasket only contains oil seepage. Word of caution on the head bolts, many consider them to be a one time use. I've reused them, and I've also broken them off, so it has been 50/50 with me! New bolts are now listed at 14 dollars each (they used to be 22 dollars each!). After changing the gasket and refilling the coolant, make sure you burp the cooling system to get all of the air out of the system. I fill mine, let it sit for an hour or so, then loosen the water hose clamp at the thermostat. As the air escapes the coolant level in the radiator should drop. Try this a couple of times. I have a coolant pressure test kit that I use, it is for motorcycles. It allows me to test head gaskets without tearing anything down. Pump it up to 10 psi, and let it sit. Check for leaks on all of the hose connections. If the pressure drops and no external leaks are visible you may have a head gasket leak. I fire up the motor with the tester attached, and watch the pressure gage. A rapid increase in pressure tells me the head gasket is leaking. I found my kit on ebay for 39.95! May or may not save you money by using, but it sure is handy to have! BTW, keep coming back! We are a fun group!
 

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Was it actually coolant, or just condensation settling in the engine after non-use? Usually a blown head gasket will milkshake the cooling system. If the engine was not ran for awhile before dropping the oil, its not uncommon to get water settling under the oil and out the hole first. Especially in the winter when there are so many temperature swings.
 

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Was it actually coolant, or just condensation settling in the engine after non-use? Usually a blown head gasket will milkshake the cooling system. If the engine was not ran for awhile before dropping the oil, its not uncommon to get water settling under the oil and out the hole first. Especially in the winter when there are so many temperature swings.
This is a good point. I helped my brother-in-law change the oil in his Yamaha Warrior and he got really nervous when we pulled the plug. His oil had picked up moisture and had a nice murky brown look to the first stuff that came out. If you seen it before it should be pretty easy to recognize. If you don't know for sure you can google it and find some pics online.
 

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Thanks for the responding. It's coolant in the oil for sure. I can smell it. If I blindfolded someone and put the used oil in front of their nose and didn't tell them what it was, they would think its coolant. It's that strong. Thanks for confirming on the base gasket as well. I wasn't sure if coolant ran thru it or not. I also didn't realize the head bolts couldn't be re-used. I will order (4) new head bolts. I have the new head gasket and I had the head looked at by a shop and the checked it out and cleaned it up and made sure it wasn't warped. My guy said it was slightly out of spec but nothing too bad. So I have to assume the gasket is just bad ? I sure hope so haha ! I don't want to put it all back together and still get coolant in my oil !!
 

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I found out the hard way on the bolts! After breaking several I checked about reusing the bolts. Most people in the trade recommend new bolts every time you have the head off. That being said, I found used bolts on Ebay! Calle the seller and asked about reusing bolts, and he replied that was fine, and no issue! Guess it just depends on who you talk to! I bet I have close to 10 sets in my garage! I've since went to head studs, but that is an entirely different story! LOL
 
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