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#1
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Strange mud in expansion tank.
Just being me I noticed that the temp gauge on my car was always eager to touch the 100 mark. So I decided to get things sorted, and also do a citric acid wash as the book says.
So I went to an indian store got me about 350 grams of citric acid for 2 bucks, a bottle of shout, then drove to a freinds house to get some litmus strips, fast forward. I removed the expansion tank first, and blocked the pipe with a stopper, removed T stat put a shallow cork in the bypass hole and put the housing back with O ring, drain, degreased and acid treated (drove around for 20 mins shift lever on 3 @ 40 mph, which is about 2500 rpm). The stuff coming out was literally yellowish orange and smelled bad too. anyway - the expansion tank had mud in it - it was kind of a clay that was blocking the port that hose joins to and had also plugged the hose going to the radiator, it was blocking major compartment windows that cause coolant to move from one to another. There was more like a mug full of it - greenish yellow mud - No wonder the car was heating, the expansion tank was not working as an expansion tank. I had to jiggle and wash the tank out a hundred times to get it out. Never seen something like it. Is this an exploded silica pack or is it some snake oil type thing the PO put in perhaps, because acid did not go into the tank; assuming citric acid would have caused the silica pack to disintegrate. After flushing the block and radiator from the top radiator hose about 4 times (neutral litmus test) The water cleared with the first flush and neutral anyway but i flushed it 3 more times. - Now I have a strangely stained driveway but a nice running motor with a gauge that actually behaves.
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2012 BMW X5 (Beef + Granite suspension model) 1995 E300D - The original humming machine (consumed by Flood 2017) 2000 E320 - The evolution (consumed by flood 2017) |
#2
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I'm confused. You run a "citrus flush" through your cooling system (which probably hasn't been touched in 20 years) and you're wondering about funk which appears? What were you expecting? Solids get hotter than liquids. Heat rises to the highest point. The highest point in your cooling system is where? The hose leading into the expansion tank?
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#3
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rust
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1984 300SD Orient Red/ Palomino 1989 560SEC 2016 Mazda 6 6 speed manual 1995 Ford F-150 reg cab 4.9 5speed manual |
#4
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um, he's saying the tank was clogged when he removed it from the car to do the flush... he's not saying that stuff showed up after the flush.
anyway, the gunk could be any number of things, rust is likely, but also likely is... stop leak or head gasket sealer... beware...
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
#5
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I removed the tank before running the flush, and cleaned it separately so the acid never touched the tank. It had mud in it before the treatment, its just that I noticed it when I was cleaning it with plain water.
I made a hose setup like the manual shows, a fitting in the top radiator pipe where I could put a garden hose on.
__________________
2012 BMW X5 (Beef + Granite suspension model) 1995 E300D - The original humming machine (consumed by Flood 2017) 2000 E320 - The evolution (consumed by flood 2017) |
#6
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Quote:
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2012 BMW X5 (Beef + Granite suspension model) 1995 E300D - The original humming machine (consumed by Flood 2017) 2000 E320 - The evolution (consumed by flood 2017) |
#7
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I suspect STOP LEAK or some other coolant leak fix.
My little 190E had a plugged expansion tank too. I took it off, filled it with water, and as it was draining back out, I shook it making the water slosh around in the tank, and over a few times of filling and draining, I broke up all of the accumulated glop.
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My first Mercedes Benz. 4/6/07. 1984 190E (201 024) 2.3L four. |
#8
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Quote:
__________________
2012 BMW X5 (Beef + Granite suspension model) 1995 E300D - The original humming machine (consumed by Flood 2017) 2000 E320 - The evolution (consumed by flood 2017) |
#9
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Sorry, I mis-read the part about you putting the housing back on without the tank. I agree with someone trying a little snake oil to fix a perceived problem.
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#10
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I'm hoping I misread where he just let the flush go on his driveway.
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1987 300TD 309, xxx 2.8.2014 10,000 mile OCI Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous “Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss |
#11
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the "stains on my driveway" are just little spots that splashed from the catch pans, Its not that I just dumped the acid on my driveway - that would have been criminal.
__________________
2012 BMW X5 (Beef + Granite suspension model) 1995 E300D - The original humming machine (consumed by Flood 2017) 2000 E320 - The evolution (consumed by flood 2017) |
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