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Shop did Radiator Pressure Check-Now water in Oil - READ ONLY

12 messages,  Last post on Jan 09, 2003 at 1:48 AM

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What is this discussion about? Pontiac Grand Prix, Engine

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#11 of 12 shouldn't be able to overpressure system if checked right by swschrad Jan 08, 2003 (4:50 pm)
for instance, using the hand pump that screws onto the radiator cap's neck, you can't get that much past 18 or 20 pounds. anything you blow up with that tool was a dead part anyway, just hadn't fallen over yet to call your attention to it.   now, if somebody came back from welding class saying "looky what a neat tool I made here," and it happened to couple shop air to the cooling system, I would suspect 120 psi and up is likely to wreck the cooling system as surely as a sledgehammer.   technicians who know their subject instinctively avoid such gonzo approaches....   sorry you have a premature repair, 0patience said it way better than I was trying to say, it was already dead. I suspect you had reason to want the test done, and that reason was correct, the issue bugging you ended up being a big one.
#12 of 12 If it knocked by jgmilberg Jan 09, 2003 (1:48 am)
The mechanic can't really fix it w/o a big repair bill. At the very least you are looking at a crankshaft turning/weld and a set of rod and crank bearings. If there was a true rod knock, there is a really good possibility of an out of spec rod end and to fix that the piston/rod assembly needs to be removed and re-sized. By that time a complete rebuild won't cost that much more... It's time to decide wether the car is worth that type of repair and go from there. It might be better to fix the car than it is to have a car payment. If you can't afford the repair, but like the car enough, you could re finance the car for the cost of the repair.

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