Mercury mariner 200
Have just stripped down a 1999 model carb job
Any one know what this is in the water ways? Looks like an anti protectant has been pumped through it after build? Yellow ish product protectant I presume
The engine failed due to port side thermostat being bunked up with said stuff,,, I thought it was a piston pin with a missing clip that caused it but the whole one Side of engine has all been nipped on the pistons due to heat,,, this is a very low hr engine,,,
Hence I am thinking this said potion caused said failure , it's well adhered coated where it touches
Any ideas? Do I need to remove it ?
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