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Re: rust in the water pump, rust on thermostat
It may have been done by now. I had to do the trucks I had in the '90s. Hardened valve seats cure the issues. I don't know where you're at with this truck or what you want out of it. If you just basiclly want to run it for now, go ahead and flush it real good and see what happens, maybe nothing. My response may have been a bit dramatic. I saw you mention new motor and responded to that.
I've had vehicles with chronic rusty coolant, including a '90 Blazer I bought new. By the second winter the heat wasn't that good. That's when I noticed the rusty coolant. I had it for 193k and replaced the heater core three times and a couple or three radiators. I think the pump went that many times, too. I flushed it, had Jiffy Lube flush it for an hour or more, did the BG back flush, etc. It was just bound to be an issue no matter what.I wondered how the inside got rusty on a new motor
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed"
GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project)
GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling)
Tim
"Don't call me a redneck. I'm a rough cut country gentleman"
R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~
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