Bit of a strange one for me ? , i am quite clued up with motors
but havent seen this before.
When you open the rad.cap and look in floating on top of
the water there is , well only what i could say as gold dust, i know sounds strange //??, might be something normal, but worryed may be a problem
somewhere in the cooling system, the car is a bmw 518i l reg ,car has newer style engine in it about two three years newer than the car,and has only covered 68000 miles.
any help would be greeeeat ...
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Re: Looks like gold dust in radiator ?????
If the coolant is the first lot in there, then any machining debris, laquer, and any dust or powdery swarf that's accumulated during the manufacturing processes. Coolant is not filtered like oil, so will just circulate untill it's drained out.
I would not worry about it.
You may be closer to the truth than you think as it may be bronze powder created during the running-in of the coolant pump.
It will not affect the operation in any way, and usually sinks harmlessly out of the way.
The user manual will probably recommend a full change in 36 months - or sooner anyway.
I would only be concerned if the coolant pump was starting to leak or make noise, if so replace it if and when it does.
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The way to tell if something is wrong check oil cap. Look for a white foam sometimes it's brown showing coolant in oil also look for white or blue smoke coming out of tailpipe. If you don't see any of these simple drain reservoir and flush it. I would also drain radiator to be on safe side. It is possible that last owner put oil in reservoir I have seen strange things like that and worse
my 2000 camry also shakes when idling. Looks like the radiator fan is culprit, but havent had time to change out yet. looks like old blades on fan broke off making it unbalanced when spinning to cool off causing excessive shaking. When driving its cool enough where that particular fan motor does not need to spin, therefore no shaking. possible solution is replace the fan that is wobbling.
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It will be on the bottom corner of the rad on the side facing the motor. Look for a plastic peice that sticks out and looks like either bolt head or a wing nut, there will be a little down spout with it
The only next logical step is to have the radiator flushed and cleaned. Over time the radiator slowly builds up deposits along the fins and reduces water flow and heat dissapation. Sometimes Iv'e seen radiators get so full of deposits that only half the radiator is actually working. I have also seen this motor in other GM applications have computer problems and the cooling fans won't run when they should, but when this happens you start to see other funny stuff happening that gets hard to explain till a bad cumputer gets diagnosed. I assume everything else on the engine and car is working fine and your not noticing any other strange behavior from the engine, like hard to start sometimes and other times it starts fine, air conditioning fans work and then they quite and then work again for no apperent reason. If these type things are happening you might want to make sure your computer is working fine, and all the relays are working. Also make sure you do not have any abstructions in front of the radiator blocking air flow. there is also a sensor on top of the plennum that tells the fans to kick on, check this also.
If the fan motor for the radiator quit and the fuses are ok, the fan motor is bad, or the fusible link going to the fan has blown (it looks like a wire coming from the starter and will stretch if bad).
try flushing the system.you may have some restrictions in the motor, but first remove the radiator cap before it gets to hot,but hot enough for the thermostat to be open,and make sure you have flowing coolant.If not your water pump is bad.The fluid should be moving quite a bit.