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walshbrk
User
Nov 8, 2011, 4:27 PM
Post #1 of 12
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hello i have a 94 s-10 with the w code vortec in it i have coolant looks like it,s leaking from around the timing cover it,s not the water pump or a hose everything on it is new ,how do i pressure test the system i checked with autozone they have the tool in thier loan a tool program but i have never done it before would be thankful for any help .
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Hammer Time
Ultimate Carjunky
/ Moderator
Nov 8, 2011, 4:52 PM
Post #2 of 12
(2234 views)
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Re: coolant leaking
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You simply attach it where the radiator cap goes and pump it up to the pressure rating on the radiator cap (usually 14 to 18 PSI), then look for leaks.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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walshbrk
User
Nov 8, 2011, 4:54 PM
Post #3 of 12
(2230 views)
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Re: coolant leaking
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thanks Hammer is there some type of dye or something you use with it .
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Hammer Time
Ultimate Carjunky
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Nov 8, 2011, 4:57 PM
Post #4 of 12
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Re: coolant leaking
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No, you shouldn't need any dye. Just leave the pressure on until you find the source of the leak. You may have to pump it back up if the pressure leaks down.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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walshbrk
User
Nov 8, 2011, 4:59 PM
Post #5 of 12
(2222 views)
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Re: coolant leaking
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ok thanks again Hammer i,m going to rent the tool tomorrow i,m hoping i don,t have a cracked block or something .
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Hammer Time
Ultimate Carjunky
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Nov 8, 2011, 5:10 PM
Post #6 of 12
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Re: coolant leaking
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Cracked blocks are very rare and usually only caused by severe freeze with water instead of coolant in the system, however it is very common for the timing cover to leak where it seals the water ports. On that engine it's very, very common for the intake manifold gaskets to leak so make sure that coolant isn't running down from above the timing cover.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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walshbrk
User
Nov 8, 2011, 5:35 PM
Post #7 of 12
(2209 views)
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Re: coolant leaking
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oh ok i was wondering if there were water ports or some kind of plugs under the timing cover thanks .
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Tom Greenleaf
Ultimate Carjunky
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Nov 8, 2011, 10:09 PM
Post #8 of 12
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Re: coolant leaking
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If no color to antifreeze you are using you should still see it. Use dental type mirrors after wiping it dry or blowing it dry to see exactly where,
T
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walshbrk
User
Nov 12, 2011, 8:42 AM
Post #9 of 12
(2176 views)
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Re: coolant leaking
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this might sound stupid but everything on the cooling system is new was wondering could enough air be trapped in the system that when it gets hot it could have so much pressure it could be pushing coolant out because it has the factory type cap with no pressure release .
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Hammer Time
Ultimate Carjunky
/ Moderator
Nov 12, 2011, 9:12 AM
Post #10 of 12
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Re: coolant leaking
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No, it's not possible and neither is a timing cover on that engine. A bad intake manifold gasket is a possibility though.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Sidom
Veteran
/ Moderator
Nov 12, 2011, 9:21 AM
Post #11 of 12
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Re: coolant leaking
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All caps release pressure. Their values are usually stamped on the cap. You are probably thinking of a safety release to release the normal pressure in a system before taking the cap off.....
I would have to agree with HT on this one...
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walshbrk
User
Nov 12, 2011, 11:42 AM
Post #12 of 12
(2159 views)
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Re: coolant leaking
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well i sure do feel stupid i put a new water pump on about a month ago ,i pressure tested the system a while ago and with my light hooked up i saw a ever so small stream coming from where the water pump mounts to the right side of the motor thanks for all the comments and help guys i just thank the Lord was something simple .
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