425 might be seized please help
#1
425 might be seized please help
Ok, so first of all, the exhaust cam lobes were completely word off, so the quad would hardly run when i first got it.
So i replaced the cam and rockers. It went smoothly, and everything was installed right. Because of the shavings in the oil, I pulled the screen off of the oil tank and cleaned that. I also drained the oil from the bottom of the engine.
Let me just say that I have worked on a lot of Honda's, but this was my first Polaris. I quickly glanced at the oil change kit instructions and it just said to fill the tank with 1.9 quarts. So that is what i did....
I started the bike, figuring id let it idle for a little while to get the oil moving back up to the head etc. It started and ran perfect for about 5-10 seconds (NO EXAGGERATION) then it just stalled. I went to start it and the engine was completely locked up. I managed to get a quarter of a turn out of it before it wouldn't move anymore.
Later i looked at the instructions again, and it said to see manual for instructions on how to change lower engine oil. I guess i just figured if i filled the reservoir with the amount provided in the kit it must drain into the engine through gravity or suction since i didn't see a filler for the crankcase.....Was i wrong?
My question is, could it have possibly seized in 10 seconds???? It cant imagine anything even getting hot enough? If i did seize it, is there any chance i could free it up? And finally, how do you get oil into the crankcase if i didn't do it right? And if its not siezed what could it be, i checked the valve train/pulled the rockers off and it still wouldn't turn.
So i replaced the cam and rockers. It went smoothly, and everything was installed right. Because of the shavings in the oil, I pulled the screen off of the oil tank and cleaned that. I also drained the oil from the bottom of the engine.
Let me just say that I have worked on a lot of Honda's, but this was my first Polaris. I quickly glanced at the oil change kit instructions and it just said to fill the tank with 1.9 quarts. So that is what i did....
I started the bike, figuring id let it idle for a little while to get the oil moving back up to the head etc. It started and ran perfect for about 5-10 seconds (NO EXAGGERATION) then it just stalled. I went to start it and the engine was completely locked up. I managed to get a quarter of a turn out of it before it wouldn't move anymore.
Later i looked at the instructions again, and it said to see manual for instructions on how to change lower engine oil. I guess i just figured if i filled the reservoir with the amount provided in the kit it must drain into the engine through gravity or suction since i didn't see a filler for the crankcase.....Was i wrong?
My question is, could it have possibly seized in 10 seconds???? It cant imagine anything even getting hot enough? If i did seize it, is there any chance i could free it up? And finally, how do you get oil into the crankcase if i didn't do it right? And if its not siezed what could it be, i checked the valve train/pulled the rockers off and it still wouldn't turn.
#2
Quad Patrol
Don't let the hp numbers fool you. Its all in how you get it to the ground. Clutching clutching clutching!
Don't let the hp numbers fool you. Its all in how you get it to the ground. Clutching clutching clutching!
#3
#4
425 might be seized please help
that bolt is the timing peep hole. might to a search on these forums about changing oil. im not sure if the procedure is the same for your motor but some of them have to pinch a line to bleed the system and when they stop pinching the line you can hear a rush of air from it. never had one of these motors so i may be wrong. but its atleast a place to start
#5
425 might be seized please help
If it is a 425 expedition it takes 5L of 0w40 synthetic. This as far as I know it is the only Polaris engine with this large capacity. I don't think it would be siezed in that short a time frame but the 425 expedition comes with clutch not a belt. This may have locked open causing the engine to appear seized. Try lifting the bike off the ground and see if it is more free.
#6
425 might be seized please help
oh sorry i forgot to mention that its a 95 magnum. I determined that it was the cam binding. I used assembly lube, so i don't know why it seized up, but it did. I managed to get it moving again. I think it might be because there were some slight groves in the bearing surfaces in the head. I think it had to to mate to those groves. Not saying that this is a good thing, but at least its spinning free again.
Now i just have to figure out how to get the oil back into the engine.
Now i just have to figure out how to get the oil back into the engine.
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exmotocrosser
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09-13-2019 06:12 AM
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