Radiator flushing

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J

Jay_340

Moparologist
Joined
Apr 19, 2009
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Anyone know of a good radiator flush? I've heard that vinegar actually works really well, but I'm not sure what to really try. I have a big 4-core radiator in Duster and on warm days, the engine gets up around 200* at times. I installed a shroud, I tried a flex fan and a MP clutch fan set, messed with different size t-stats and made sure the timing and tuning was good. The water pump is in good condition, the belt is good and I recently replaced the upper radiator hose.

I'm thinking the radiator has a clog. I used a laser thermometer while the engine was up to temp and the center of the core read 190* while the outer sections of the core read 130*. I would like to try and save this radiator by flushing it since there is no external damage to it. Even if I have to fill it up with something while sealing the inlet/outlet, what kinds of flushing agents are good? I don't know of any good radiator shops around me. Anyone have any good ideas?
 
I GOT STUFF FROM NAPA CALLED LIKE RADIator rust repair it worked good i think i got it sflowing alot better and its a leave in thing.
 
I can recommend vinegar. it will take everything out... corrosion... old stopleak that you didn't know about...everything! But do make sure you flush it good! Really good!!!!
 
bjkadron said:
I can recommend vinegar. it will take everything out... corrosion... old stopleak that you didn't know about...everything! But do make sure you flush it good! Really good!!!!
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Did you leave it in the radiator to soak or did you just run it through the cooling system for a few heat cycles? The engine has been reconditioned, so anything in the cooling jackets has been boiled out.
 
cascade dish washer is the best use a bottle of liquid put it in run it for a week then take thermostat out back flush and it will be good as new I guarantee it.and it will not hert any thing..
 
godfatherofchry said:
cascade dish washer is the best use a bottle of liquid put it in run it for a week then take thermostat out back flush and it will be good as new I guarantee it.and it will not hert any thing..
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The dishwasher machine liquid or the hand washing liquid. I would imagine the handwashing liquid would foam like crazy.
 
2 teaspoons of powder spic&span, run it for 5 days, flush & you'll be surprized at what comes out, Don't use the liquid thou, itll keep foaming up for months,
 
Jay_340 said:
Did you leave it in the radiator to soak or did you just run it through the cooling system for a few heat cycles? The engine has been reconditioned, so anything in the cooling jackets has been boiled out.
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A couple heat cycles should be fine.. if it is going to take anything out it will do it almost instantly.
 
Interesting remedy choices in this thread :read2:. This info is always needed here in the desert where summer temps can reach 120*
 
I hope someone is writing the "Mopar home remedy and ailment book". It'll sell millions! I never thought of using soap of any kind or vinegar.

Good thread.:thumbrig:
 
RogerK said:
I hope someone is writing the "Mopar home remedy and ailment book". It'll sell millions! I never thought of using soap of any kind or vinegar.

Good thread.:thumbrig:
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If you think about it vinegar eats corrosion build-up. And the soaps have cleaners and hard water deposit removers.
 
RogerK said:
I hope someone is writing the "Mopar home remedy and ailment book". It'll sell millions! I never thought of using soap of any kind or vinegar.

Good thread.:thumbrig:
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I actually heard of the vinegar thing when I was watching Horsepower TV one weekend. I was just curious to see if anyone else had tried it. I think I'm going to give it a shot once the weather clears up a bit. =( dumb wind and rain.
 
Jay_340 said:
I actually heard of the vinegar thing when I was watching Horsepower TV one weekend. I was just curious to see if anyone else had tried it. I think I'm going to give it a shot once the weather clears up a bit. =( dumb wind and rain.
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Flush it out REALLY good before you put the antifreeze in.. They sometimes don't like to mix.
 
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