Flushing Engine - The 1947 - Present Chevrolet & GMC Truck Message Board Network

skokie · 04-25-2005, 10:41 PM

I am in the middle of a waterpump swap out. What would be a good way to flush out the engine of all of the water and antifreeze?

Thanks

jhow66 · 04-25-2005, 11:03 PM

Take out the 2 plugs just above the pan rail on each side of block. This will drain the block of all water.

68w/sbc406 · 04-25-2005, 11:04 PM

might have to poke out some rust, but she will flow

skokie · 04-25-2005, 11:07 PM

Quote:

Originally Posted by jhow66

Take out the 2 plugs just above the pan rail on each side of block. This will drain the block of all water.

Are you talking about the freee plugs? Can I reuse them?

68w/sbc406 · 04-25-2005, 11:11 PM

they are two threaded plugs on each side. not the pressed in freeze plugs

skokie · 04-25-2005, 11:14 PM

Ok now I gotcha. So let me ask you this. Once I drain all this out how could I rinse out any litle pieces of junk that is left in the engine? Any suggetions?

skokie · 04-25-2005, 11:39 PM

Quote:

Originally Posted by jhow66

Take out the 2 plugs just above the pan rail on each side of block. This will drain the block of all water.

When I remove those 2 plugs how fast is it going to come out? Need to know if I need a umbrella

Striker169 · 04-25-2005, 11:40 PM

Quote:

Originally Posted by skokie

Ok now I gotcha. So let me ask you this. Once I drain all this out how could I rinse out any litle pieces of junk that is left in the engine? Any suggetions?

Fill up the engine again maybe? plug those holes fill radiator with just water crank the engine a couple times to flow the water and flush again? I dono just my 2 cents

jhow66 · 04-25-2005, 11:45 PM

Quote:

Originally Posted by skokie

When I remove those 2 plugs how fast is it going to come out? Need to know if I need a umbrella

Yeah and don't open your mouth.

68w/sbc406 · 04-26-2005, 12:55 AM

Quote:

Originally Posted by skokie

Ok now I gotcha. So let me ask you this. Once I drain all this out how could I rinse out any litle pieces of junk that is left in the engine? Any suggetions?

just leave them open and run a hose in the t-stat housing w/out the t-stat in of course. that should flush stuff out

04-25-2005, 10:41 PM	#1
skokie Registered User Join Date: Oct 2003 Location: San Jose Ca. Posts: 3,335	Flushing Engine I am in the middle of a waterpump swap out. What would be a good way to flush out the engine of all of the water and antifreeze? Thanks __________________ RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234

04-25-2005, 11:03 PM	#2
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	Take out the 2 plugs just above the pan rail on each side of block. This will drain the block of all water. __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

04-25-2005, 11:04 PM	#3
68w/sbc406 Got Light Emitting Diode? Join Date: Apr 2004 Location: Newberg, OR Posts: 2,485	might have to poke out some rust, but she will flow __________________ 1968 1/2 ton 2wd lwb 6 lug disc and bags up front. Next c notch and rear bags '02 Chevy Silverado LT ext cab short bed 2WD 5/7 drop on 22's(the family car) 1993 Cherokee work ride/weekend wheeler Last edited by 68w/sbc406; 04-25-2005 at 11:04 PM.

04-25-2005, 11:11 PM	#5
68w/sbc406 Got Light Emitting Diode? Join Date: Apr 2004 Location: Newberg, OR Posts: 2,485	they are two threaded plugs on each side. not the pressed in freeze plugs __________________ 1968 1/2 ton 2wd lwb 6 lug disc and bags up front. Next c notch and rear bags '02 Chevy Silverado LT ext cab short bed 2WD 5/7 drop on 22's(the family car) 1993 Cherokee work ride/weekend wheeler

04-25-2005, 11:14 PM	#6
skokie Registered User Join Date: Oct 2003 Location: San Jose Ca. Posts: 3,335	Ok now I gotcha. So let me ask you this. Once I drain all this out how could I rinse out any litle pieces of junk that is left in the engine? Any suggetions? __________________ RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234



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