4x4Wire's TrailTalk Forums: cooling system flush; gurgling sound under dash

here is the latest:

I drained the radiator

then pulled the passenger side engine block drain plug

at first, nothing came out, I was in horror as I thought I screwed up and pulled the wrong plug. but then after lightly poking it with a long punch, it came pouring out.....was really plugged up I guess.

then I tried and tried to get the driver side engine block plug out, but it was just too tight for me to get my tools and hands in the right spot, I broke a 1/2" drive swivel adapter trying to do it. so I gave up on the driver side, the only one I could do was the passenger side.

then I pulled the heater hoses off the pipes, crud came out. I then hooked up some old heater hoses that I had laying around from my 97 SR when I had kept the old parts and used the garden hose to flush and back flush the heater core numerous times at a pretty good pressure with heater valve open of course.

then I re-connected heater hoses and put the one engine block drain plug back in, closed radiator drain cock, cleaned out reserve tank, through in some prestone flush, and topped off with water until it came out of the bleed bolt.

put bleed bolt back in, then radiator cap, and got it hot.

heat works extremely well now, and no more air in the system, no more squirting noises under the dash when reving engine, etc.

I flushed it out a few more times with just plain water just for good measure, and re-filled with prestone coolant long life type. had the wife take it for a drive for about 10 mins, she said heat worked really well and she couldn't hear the gushing noise either.

tomorrow I will drain some of the radiator and replace the t-stat, put in new reserve tank with suction straw and cap, lastly put on new factory radiator cap.

I am also going to put in a prestone anti-rust treatment that stays in the cooling system with a fresh change of fluid.

anyone think I am missing something? thanks to all who have helped, I think I have this cooling system in much better shape than when I bought the truck, to include the heater.

last note, those engine block drain plugs are extremely hard to get at, does anyone have a trick to making it easier? like I said, I couldn't even get the driver side plug out successfully. I would need to be gumby to reach my hands up there where they are at.

this will be a really nice fully functional montero when I am done, still lots of little things to fix to make it completely 'factory perfect' but it is getting there.

the only thing the dealer said I cannot get is new factory floor mats and the little tool kit that goes in the cargo door panel. if anyone knows how I can find one, please let me know.

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97 Montero SR Mitsu Rear Diff Lock ARB Front Diff Lock 4.9 R&P 3.15 transfer 43:1 crawl ratio 2" susp lift 2" body lift 2" Gas Tank Lift 35x12.5 MTRs on 15x10 Dick Cepeks Rock Sliderz Custom rear bumper ARB front winch bumper 12,000 lbs MM Winch

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