500 EFI overheating
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500 EFI overheating
Tried back flushing and it won't clear. Can get through the oil cooler with flush but no further. From the diagram it looks like the only thing left is a fuel cooler and it looks like it's under the engine. The boat is a 353 formula. Any idea if the fuel cooler is accessible or if it's toward the front of the engine? I even tried back flushing with a pressure washer and the hose literally started to balloon so I backed off. Any other ideas? Hoping not to have to have the engine pulled.
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Thanks and that's what I did and I can flush all the way through the oil cooler but when I try to flush the hose coming up to the oil cooler, it's jammed. From the diagram, it looks like it runs under the engine to a fuel cooler and just trying to determine how to get to that so I can disconnet and see what's in there
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Now I am really stumped. I can get water to flush from the fuel cooler up to the oil cooler (the way water normally flows) but when I try to flush the other way it wont go at all. My other engine flushes all the way through so I started wondering if this engine had a power steering cooler if there was some kind of a one way valve on it. Does anyone have any ideas?
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Agreed, I'm just at a point where I can't go any further w/o taking the engine out. It's odd water will flow one way and not the other. I can get a wire through the fuel cooler so I'm guessing it's soething in the power steering cooler which I cant get to. Any harm with gently running a thin plumbing router through the hose and/or up through the fuel cooler?
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I found where the water won't flow. It's a blue and yellow cylinder with a petcock on it and its located between the oil cooler and the fuel cooler. I'll post a picture if needed but I have it out and I can blow air one way (the way water flows, but not the reverse direction. It almost seems like it's set up to do that (not allow water to flow in reverse). The weird thing is both engines have this and I cab backflush my other one. Let me know if a picture would help