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coolant being pushed up through overflow coolant

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Old 03-11-2015, 10:25 PM
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Re: coolant being pushed up through overflow coolant
Originally Posted by Injuneer
No, still high, but not harmful. Typically you want it no more than the mid-point of the gauge, about 210°F. What temp t'stat did you get?
Duralast/Thermostat 4218 at AutoZone.com - 1 reviews
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Old 03-11-2015, 10:49 PM
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Re: coolant being pushed up through overflow coolant
Stant Lev-r-vent Radiator Cap 10334: Advance Auto Parts

going to get this cap what do u think?
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Old 03-11-2015, 11:07 PM
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Re: coolant being pushed up through overflow coolant
E-bay has a ac delco now for$14.55 shipped.#RC94 cap.Hope this helps.
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Old 03-11-2015, 11:08 PM
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Re: coolant being pushed up through overflow coolant
That one fits my 93.Check for your application.
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Old 03-12-2015, 12:55 AM
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Re: coolant being pushed up through overflow coolant
Originally Posted by Fatdog2
That one fits my 93.Check for your application.
yeah its fits my 94 going to pick it up tomorrow afternoon
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Old 03-12-2015, 12:58 AM
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Re: coolant being pushed up through overflow coolant
Originally Posted by Fatdog2
E-bay has a ac delco now for$14.55 shipped.#RC94 cap.Hope this helps.
looking for something i can have go out and buy and have right away trying to fix the problem asap as this is my DD. Thanks for looking out tho
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Old 03-12-2015, 08:54 AM
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Re: coolant being pushed up through overflow coolant
Originally Posted by warmeck
Stant Lev-r-vent Radiator Cap 10334: Advance Auto Parts

going to get this cap what do u think?
That is a 20# cap. You need an 18#.
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Old 03-12-2015, 02:19 PM
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Re: coolant being pushed up through overflow coolant
Originally Posted by shoebox
That is a 20# cap. You need an 18#.
what do u mean by this, 20# cap of what?
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Old 03-12-2015, 02:25 PM
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Re: coolant being pushed up through overflow coolant
The link opens, and shows that the cap has a rating of "20", meaning 20 psi... which means it opens when the pressure builds to 20 psi (pounds per square inch). The LT1 cap should be rated at 18# (18 psi).

Click on the "Specifications" tab:

Cap Finish: Plated
Cap Material: Steel
Lever Type: Yes
Logo: Yes
Material: Steel
Maximum Pressure: 20
OE Replacement: No
Quick Pressure Release: Yes
Radiator Cap Shape: 4 Ear
Reservoir Overflow System: Yes
Shape: 4 Ear
It doesn't help that when you do the "check vehicle fit", it shows 18 psi.

This part is an Exact fit for your1994 Chevrolet Camaro Z28

Safety Release Radiator Cap; 18 psi Pressure Rating
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Old 03-12-2015, 02:41 PM
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Re: coolant being pushed up through overflow coolant
Originally Posted by Injuneer
The link opens, and shows that the cap has a rating of "20", meaning 20 psi... which means it opens when the pressure builds to 20 psi (pounds per square inch). The LT1 cap should be rated at 18# (18 psi).

Click on the "Specifications" tab:



It doesn't help that when you do the "check vehicle fit", it shows 18 psi.
ah got it so this cap would be fine? CST/Radiator Cap 7718 at AutoZone.com
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Old 03-12-2015, 02:49 PM
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Re: coolant being pushed up through overflow coolant
Originally Posted by warmeck
ah got it so this cap would be fine? CST/Radiator Cap 7718 at AutoZone.com
It is the right rating, if it fits the neck of the radiator. They are not all the same. Since you tested the cap good, I doubt if this is going to fix your problem. Guess it couldn't hurt to try. I would do the hydrocarbon test that Injuneer suggested.
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Old 03-12-2015, 03:07 PM
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Re: coolant being pushed up through overflow coolant
Originally Posted by shoebox
It is the right rating, if it fits the neck of the radiator. They are not all the same. Since you tested the cap good, I doubt if this is going to fix your problem. Guess it couldn't hurt to try. I would do the hydrocarbon test that Injuneer suggested.
okay thats the next thing i will do. Today i was hitting high rpms and it stayed arouned 180-190ish the whole time but last night it was at 220.
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Old 04-16-2015, 05:53 PM
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Re: coolant being pushed up through overflow coolant
the problem was a bad radiator
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