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Old 08-06-2014, 11:05 PM   #1
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Default 1998 4.2 v6 blown head Question (help)

so first the problem was one of the heater hoses snapped off the heater core connector. While diagnosing the problem i noticed there was amounts of rust throughout my cooling system, so i just went ahead and got both new heater core pipes and both radiator hoses, and a new thermostat. i was gonna clean and flush the system. After successfully putting all the new stuff on and the truck back together i filled the radiator up the just water to test it, and once i turn the engine over it runs shaky and ruff the water in the radiator bubbles instantly with the cap off, the white puffs of smoke coming out the exhaust, the engine oil is milky, and theres white smoke coming out of the engine oil filler tube.
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Old 08-07-2014, 12:28 AM   #2
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So.... You're wondering if that is a sign of a blown head gasket? It is, so you're on the right track. The early 4.2's (1997- 1998) were notorious for those as they weren't the best quality. So that does nothing more than to prove it.
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Old 08-07-2014, 12:33 AM   #3
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thanks..... so what do you think my best option would be fix it or sell it
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Old 08-07-2014, 12:40 AM   #4
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Its on self preference. Though if its a nice truck and only needs that, I'd say go for it. Just know that if you do sell it, you won't be able to sell it for as much. Plus, you're gonna need another truck. So all in all, it might be better off to do that.
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Old 08-08-2014, 06:41 PM   #5
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It could either warped or cracked the Cylinder Heads/Lower Intake Manifold.

Disable the fuel pump and coil pack. Try removing the spark plugs and crank the engine to determine which cylinder could be causing the bubbles
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Ethanol is Corrosive to components Made of Aluminum, Copper, Brass, Zinc, etc.
It DEGRADES Natural Rubber, Polyurethane, Cork Gasket Material, Leather, Nylon,Thermo-Plastic & Thermoset Polymers
Ethanol is a Big Scam....

Last edited by w0lvez; 08-08-2014 at 06:52 PM.
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