pink antifreeze still freezes @ 17 degrees,my refractor tells me so!

on one side theirs a plug,the other side you have to remove the knock sensor to drain the block,dont ask me why but i think its a stupid location for it..

warm up the engine then drain what you can by pulling the plugs and hoses,get a 5 gallon gas can and fill it with antifreeze,find a old section of 3/4 garden hose and cut to fit,set the gas can on your swim plarform and hoof it up to your ear muffs.have a friend start your boat and release the vent on the gas can and your engine will suck the antifreeze through the engine..make sure you take the oil filter off and dunp a little gas out of it and top it off with 2stroke oil for fogging and to lube the injectors..

Yep, the pink does freeze. It just does not expand until -50*

OK, I did everything just like this but couldn't get the motor to suck up the antifreeze. I put the bucket of antifreeze on the swim platform but no dice. Maybe there wasn't a good seal at the muffs but I think I'm gonna check into installing a flush kit. Then there shouldn't be any questions.

Resurrecting an old thread...I found all the drain plugs except for port side of engine block. From what I read and hear the drain block is replaced with a sensor. Can someone post a picture? Or point to it on a diagram. I wanna be sure I am removing the right thing. Thanks.

The 500 EFI has about 5 or 6 blue plugs, in the block, ps cooler, oil cooler seapump an headers, I would pull them all out, let drain, put them back in and fill with the rv antifreeze and run it till it comes out the tips

I found them all: 2 in the front, (1) in each header / 2 total, and (1) Starboard side block. So that's 5 altogether. I can't figure out the port side. Need some help.

The block drain is there on the lower port side of the block.
It could have a small water pressure hose and fitting coming out of it if you have water pressure gauge.
Try using a mirror to help locate it.

I see what you are talking about but should I take the sensors out or the fitting off?

think we are going to forgo taking sensors out and only take plugs out that are available. Do our typical burping routine by running it for 10 seconds and then run the engine on ear muffs with antifreeze for a few mins. This should be adequate

use a clear plastic cup and take a sample to make sure you have solid pink out the exhaust with no water mixture, you should be fine