22re coolant loss
#21
Fixed my problem: Just bought this truck a few days ago, so the previous owner had some things backwards.
The cap on the reservoir tank was essentially reversed, so the air flow going in to it was backwards. I flipped the cap around, reattached the tubing, and it's fine. Prior to that, when heat/fluid/pressure increased in the radiator, the heat would pass to the reservoir and out the vent tube, sucking all the fluid out just like a syphon.
Funny fix. Glad it was so simple.
The cap on the reservoir tank was essentially reversed, so the air flow going in to it was backwards. I flipped the cap around, reattached the tubing, and it's fine. Prior to that, when heat/fluid/pressure increased in the radiator, the heat would pass to the reservoir and out the vent tube, sucking all the fluid out just like a syphon.
Funny fix. Glad it was so simple.
#22
To test, take the vent tube off at the radiator. Carefully blow into this hose with reservoir half full or so. If it is set backwards, coolant will immediately flow out the short vent tubing, out of the reservoir. This is because the air is just passing over the tube that goes down into the reservoir, creating a syphon, or a suction from negative pressure. If it is set up right, it should blow air INTO the reservoir like you are blowing on a straw in a glass of water. Just don't suck in any ethylene glycol, or you'll end up in the ER on a Fomepizole infusion
I never would have thought the cap on the reservoir had a specific function, but low and behold, it does. I can see where someone might easily reverse the cap during a radiator flush or whatever else.
Last edited by trackhead; 06-04-2012 at 03:21 AM.
#23
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Glad it was not your head. Here's a pic that shows proper placement of the cap. Not our engine but you get the point. Good eye brah.
Last edited by WHAHAHAJR; 06-06-2012 at 02:13 PM.
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