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» Northern California Ford Owners     » Automotive   » General Talk   » flushing out block due to rust

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Author Topic: flushing out block due to rust
KARATExxCHUCK
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So my 92 Mustang sat for a couple years and the radiator had rust. There was rust in the hoses so I'm replacing the upper and lower hose along with the radiator. I'm worried that there might be rust and particulates in the block. What is the best way to remove all that stuff? The the motor is still in the car!

Charles [patriot]

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Posts: 1257 | Registered: Apr 2013  |  :
NEIGHT
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You used non distilled water in there?

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Posts: 18307 | From: EA$T $IDE REDWOOD CITY | Registered: Nov 2008  |  :
Boss 327
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Have you ran the car since putting new hoses and radiator in?

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"You'll never truly understand building engines until you can make power N/A. FI overshadows an engines defficiency." Al Papito

Posts: 1720 | From: East Bay | Registered: May 2009  |  :
Blind
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I had to replace the freeze plugs on my block after it sat for awhile, with them out I was able to scoop out a bunch of the gunk but a lot was still in there. Previous owner of the block must have ran straight water with no tstat.

With the block drain plug removed it was pretty easy to flush and fill. I ran prestone super radiator flush for a couple hundred miles along with distilled water. Then replaced heater core + radiator + water pump + tstat + hoses.

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Posts: 8517 | From: (Socal) Camarillo | Registered: Jul 2003  |  :
Vortech Saleen
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I didn’t pull the freeze plugs but I did removed the hoses to the radiator and the heater core and flushed with garden hose until water ran clear. Lots of build up in the radiator too. Just kept hitting the inlet and outlet with high pressure hose water.
Posts: 50 | From: Sacramento | Registered: Mar 2007  |  :
SLOWSN95
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There are some chemicals you can run with straight water that will help break up rust. I use the Prestone Flush+Cleaner. Use one bottle with straight water.. follow instructions and use for an extended period of time. If you feel that it should be done again, then repeat.

When finished with the chemicals, make sure you flush out the engine with water like you have previously done.. the prestone does leave a residue.

Also, make sure you disconnect the heater core and flush with the hose in both directions. I like to hook the gardening hose to one of the heater core lines and a separate clear hose up to the other heater core line to see when debris has stopped coming out of it, then reverse the hoses to back flush.

Good luck. I know this process can be long and tedious.

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Posts: 2200 | From: 510/east bay | Registered: Mar 2008  |  :


 
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