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07-28-2014, 04:34 PM | #1 | |
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99 S10 overheating/losing coolant from block
Hello all,
Haven't posted in a while, I have a 99 S10 4.3 2wd. Last week on a 5-6 mile drive it overheated, and it turns out the coolant was somehow almost a gallon low! I topped it off and all was well for nearly a week. This weekend I was driving and suddenly could smell a strong coolant odor. The temp gauge began to spike and when i pulled over and popped the hood it was clear the coolant was finding its way out but not through the overflow or radiator. When it cooled down and I added water/coolant I could see the coolant coming from the block or near the block. Also, when I let it run for a few minutes i could see the fluid "spraying" out from what appears to be near the pass. side valve cover maybe near the intake manifold...The oil looks good, so I'm not sure it's the head gasket. Not sure where to go with this. I can't really afford to get it to a shop at the moment. Is this the end of the road for my S10? Thanks, Leo 99 S10 4.3
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07-28-2014, 04:54 PM | #2 | |
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Re: 99 S10 overheating/losing coolant from block
You can get a "loan a tool" pressure tester from most autoparts stores. You just connect it either to rad cap or overflow cap, pump a little pressure and look for the leak. Takes all of a few minutes. Are your heater hoses in that vicinity? They normally route into the firewall.
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07-28-2014, 05:13 PM | #3 | ||
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Re: 99 S10 overheating/losing coolant from block
Quote:
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07-28-2014, 05:28 PM | #4 | |
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Re: 99 S10 overheating/losing coolant from block
Update: To be more clear I can now see that the coolant is leaking out of or near the block almost as fast as it goes in(once it gets close to being full). I can't see where it is coming from but if I look underneath it is definitely pouring out from the passenger side.
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07-28-2014, 06:33 PM | #5 | |
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Re: 99 S10 overheating/losing coolant from block
Update: After slowly pouring water into the radiator and watching the intake manifold area, I can see a tiny hole caused by corrosion where the water/coolant is escaping from. It's directly below the throttle linkage where the intake meets the valve cover.
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07-29-2014, 08:18 AM | #6 | ||
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Re: 99 S10 overheating/losing coolant from block
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your vehicle should have dexcool if you used another type and did not use distilled water and replaced this coolant every 2 yrs the leaks will come.. |
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07-29-2014, 09:29 AM | #7 | ||
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Re: 99 S10 overheating/losing coolant from block
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Also, not to be redundant but I should disconnect the upper hose and pour into the hose directly? Thanks again!
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07-31-2014, 08:15 PM | #8 | ||
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Re: 99 S10 overheating/losing coolant from block
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drain the radiator first ..should work., |
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07-31-2014, 08:42 PM | #9 | |
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Re: 99 S10 overheating/losing coolant from block
[quote=j cAT;7138871]use the upper hose disconnect at the radiator. pour in the solution pre mixed,
drain the radiator first ..should work.,[/QUOTE When I tried this the other night I poured the bars (coppercolor) into the upper hose. It seemed to slow leak down but it is still coming out of the intake manifoldpretty quickly. So should I have mixed the bars with water? Do I Try the pellets? Thank you!
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08-01-2014, 09:15 AM | #10 | ||
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Re: 99 S10 overheating/losing coolant from block
[quote=90sabre;7138873]
Quote:
this should take a day or so to see if it helps or fixes the leak. if it slows down the repeat and use another 1/4 of the stop leak.. adding bars not pre mixed is NOT good.. you need to mix it and get it to break down so it will move easy though out the coolant system to reduce/stop the leakage. dumping the bottle into the system them causes it to plug up stuff and takes longer to work.... |
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