2003 Head Gasket Repair - Page 7
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Northstar Engines and System Technical Discussion Discussion, 2003 Head Gasket Repair in Cadillac Engine Technical Discussion; Yea that's how I'm doing it over a two day period .I only got a few now things to hook ...
  1. #91
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    Yea that's how I'm doing it over a two day period .I only got a few now things to hook up.I'll have to finish tomorrow after work I had to run to the store plus it got cold out.yea I read your thread, you got the crossover fix to discover your freeze plug was leaking.

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    Actually the freeze plug fell out. The crossover had to come out to spend a minute replacing it. After it was all back together, I eventually discovered the head was cracked.

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    Damn that sucks,I forgot to mention the soreness in the knees and back when doing this job.I actually disconnected the rear 02 sensor, both coil pack connectors, both engine grounds and probably something else to get the harness to move enough.the harness is definitely the biggest problem trying to get the bolts and crossover out.I just hope I didn't break any wires.oh yea I took the felpro gaskets back and got the Delco's and that rubber around the bolt holes really makes a difference I could even imagine doing it with the felpro unless you do what sub said and put rtv sealant around the bolt holes.

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    I have a few more questions but I can only think of one now.should I replace the fuel injector o rings being that this is the second time they have been out.I can't remember for sure but I thought I read a thread that said if you remove your injectors that you should replace the o rings is this true ?

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    Re: 2003 STS coolant leak (possible crossover leak)?

    No real need to unless they are cut or nicked. Always put a drop of oil on them when reinserting them. That'll make them slip in nice and easy without doing any damage.

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    Ok, yea the other question was besides the gasket on the water pump housing and thermostat housing is there supposed to be any type of sealant ?cause there was some gooie stuff along mating surface that I had to get off with a razor.I'm not sure what it is but looks like some type type of sealant maybe.

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    No sealant necessary, just the seal.

  8. #98
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    Ok,I don't know what that stuff was around the mating surface but it was gooie/sticky stuff.ok thanks

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    Alldata says coolant capacity is a little over 3 gallons.I know when you drain the system all of the coolant doesn't come out, about how much do I need?

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    You removed the crossover, the block should be completely drained now.there might be a little at the bottom of the radiator and heater core, but it's close to empty. Just buy 2 gallons of non diluted coolant and 2 gallons of distilled water. You'll have more than enough.

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    Re: 2003 STS coolant leak (possible crossover leak)?

    I'd bet you would be fine with one gallon of each. I don't think I have ever been able to get a full two gallons back in it after I drain it.

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    With just a drain and fill, you're right. But when you remove the crossover, more coolant drains from the block through the lower ports.

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    Re: 2003 STS coolant leak (possible crossover leak)?

    Really? More than when I hook up a shop vac and blow out additional coolant?

  14. #104
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    More did pour out when I removed the crossover ,I don't know how much.I'll get her right .I lost one of the water pump cover bolts, hopefully it's in my other jacket.

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    Quote Originally Posted by Ranger
    Really? More than when I hook up a shop vac and blow out additional coolant?
    That, I've never done, so I'm not sure.

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