Can't get cooling system clean

[79jasper]

Or petcocks.

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[hesutton]

Or petcocks.

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X 2

Ditch the stock block drains for some petcocks. Makes draining the block a breeze.

Other suggestion, get a coolant filter. I prefer one that is precharged with DCA/SCA. It clears the junk out of the coolant and keeps it treated at the same time.

Heath

 

[DaveBen]

Heath makes a good point. I have been running a coolant filter on my 2004 6.0 since I got it. I could NOT believe how much crap was in a new engine. I use a filter that does not have DCA/SCA additives as I run a 6.0 diesel.

 

[1983idi]

Yeah I unfortunatly got stuck with the crappy 1/4" Square drive internal plugs and now rather than 1/4 square they are a 1/4" round hole. I have petcocks already as I planned on replacing them. Looks like i will just flush with a hose and distilled water then add the coolant, not enough room to drill them out for me. My luck i'd hit the threads and have to tap a bigger hole. I would be a mess for sure. Thanks for all the replies

 

[madpogue]

There are extractor sockets made for allen head internal type fasteners. You MIGHT get one to bite in there.

 

[CDX825]

I agree with getting some VC9 from the ford dealer. That is a flush made specifically for flushing out rust and junk.

 

[ISPKI]

Fleetcharge has a filter that is offered which, supposedly allows you to never change your coolant. I'll probably look into that next.

 

[catbird7]

Another route to consider, MB uses citric acid to clean diesel cooling systems. Worth investigating, it's rather cheap.

 

[riotwarrior]

90 deg drill???

 

[The Warden]

There are extractor sockets made for allen head internal type fasteners. You MIGHT get one to bite in there.

I got mine out using a set of Easy-Outs:

http://www.sears.com/craftsman-5-pc...gclsrc=aw.ds&dclid=CNDr98ueidQCFcxrfgodMUYDXA

This was 13 years ago now, but IIRC I had to hammer them in to the hole to get a bite good enough to not strip, and the plugs STILL threw a royal hissey-fit coming out.

Penetrating oil would help; if you can get some Aero-Kroil, that would be best.

That, plus a fair amount of elbow grease, ought to do it. Maybe also try getting a torch in there and heat up the plug?

Good luck!

 

[79jasper]

I think you would heat around the plug.

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[sjwelds]

^^^agree. Tho it's gonna take a bunch of heat to do any good. Cast iron lump of an engine block, and so on