LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Found an antifreeze leak...How to fix?

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Old Jun 4, 2010 | 04:02 PM
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Default Found an antifreeze leak...How to fix?

Ok so I finally found where the missing coolant is going...Apparently all over the front of the engine!! This cap is severely cracked....Hpw do I go about fixing it now? What can I cap this off with that will hold??....Don't mind the missing bolts, it's an Impala SS alternator =)

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Old Jun 4, 2010 | 04:29 PM
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Did you physically watch it leak from there?
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Old Jun 4, 2010 | 04:33 PM
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yes. I dont know if you can see it in the pic but, around the whole clamp is a crack and the cap itself of cracked in several areas. If you squeeze the cap fluid builds up on your finger.
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Old Jun 4, 2010 | 04:34 PM
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Oh, just get a new cap. They don't last forever but there's not much more you can do. Where's the hose that went there originally?
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Old Jun 4, 2010 | 04:37 PM
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Yeah I'm just gonna put a new cap on. Was just wondering if there was like a heavy duty one I could get or something... When I purchased the car a lot of pieces were off and I had to re-assemble it. On top of that the Good Year hose kit doesn't come with EVERY replacement hose like it says. It actually forces you to do a TB bypass and this hose was one of em...
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Old Jun 4, 2010 | 04:39 PM
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Looks like a throttle body bypass by way of deleting the 2 halves of the hose that goes through the TB instead of joining the hoses with a male/male coupler. The other side of the TB there should be another capped fitting. Check it, too as it may be ready to leak as well. Alternately, you can join the capped ends with a single piece of hose. Either is fine...
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Old Jun 4, 2010 | 04:40 PM
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Well you could get rid of that entire hose if you don't have a heater core anymore.. If I'm not mistaking, both ends go the water pump. I have them capped off on mine.
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Old Jun 4, 2010 | 04:40 PM
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Yeah its def capped as well cause I had to do the TB bypass as stated before. I think I'm just going to replace them both =)
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Old Jun 4, 2010 | 04:41 PM
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I still have my heater core, I live in NYC and this is my DD (unless its broken...which it usually is... =( ) so I def can NOT delete the heater core
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Old Jun 4, 2010 | 06:51 PM
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id say look for a cap thats more for antifreeze or hot water. that looks like a regular vacuum line cap...
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Old Jun 4, 2010 | 06:58 PM
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That's definitely a vacuum cap - not designed to hold coolant.
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Old Jun 6, 2010 | 02:45 PM
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Ok, SO I went looking for a cap to replace the obvious vacuum cap and cant find squat...Been to 4 places, and 4 places told me use a hose with a bolt....What should I do??
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Old Jun 6, 2010 | 03:21 PM
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I think you'll be good w/ the hose and a bolt.

Why not undo the TB bypass as an alternative?
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Old Jun 6, 2010 | 03:33 PM
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because i dont have a Y'd hose like the stock unit that goes back into the radiator
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