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I ran all the oil of my 400 ranger, it sounds like a diesel, should I replace piston & rings??

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  • Polaris Master
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Bearings too. If the crankshaft is galled, replace it too.

Posted on Dec 06, 2016

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Posted on Jan 02, 2017

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2 Answers

1992 350L Polaris atv, what is the small tank on left side under gas tank for and what do I put in it


This should be for 2 cycle oil injection , find a owners manual online for proper oil ...

Jun 11, 2017 | ATVs

1 Answer

2001 Scrambler 400. What should compression reading be?


With the decompressor active, nominal is 85 - 90 psi. At 62 psi, you have a top end problem. Try dumping a bit of oil in the cylinder and re-test. If the pressure rises, you have a ring seal problem. That sounds like an top end rebuild.

Oct 28, 2015 | Polaris ATV

1 Answer

Artic cat zr 700 spitting oil out the exauat


Sounds like a ring has broken and oil is going through the exhaust vale,You need to put new rings on the pistons.

Nov 25, 2014 | ATVs

1 Answer

I have an 04 Suzuki Eiger 400. Smokes a lot when first started but subsides a little after running. Im thinking piston rings but would like any other feedback before tearing the top end apart


sounds like piston rings, if rings are in bad shape,will be at its worst when cold then will get better when it warms up. Should be some power loss as well. pretty easy rebuild. good luck

Apr 13, 2014 | Suzuki 2004 Eiger 400 4X4 Manual

1 Answer

Blowing blueish smoke all the time


You might have a cracked piston ring or might be burning oil.

Jan 23, 2014 | Suzuki 2005 Eiger Automatic 400 4X4

1 Answer

I have a 2000 Polaris 400 that had 30 lbs compression. top end was rebuilt, and cylinder honed. New piston, rings (staggered against stop tabs), wrist pin bearing and pin, and the retainer clips were...


Hey Brandon, there could be several things... one is you put the piston in backwards... the arrow goes toward the exhaust..(if there are holes in the piston, they go in the back).., you installed the wrong piston..or..skirt was too long.., you left something inside the engine..(dropped one of the circlips in the engine).. the rings were installed upside down..,one of the circlips came out..., you got a bad piston..(never seen this happen).., the cylinder needed boring and it had so much clearance that the skirt caught on the intake port lip...

OK...Brandon, repairing this engine correctly is going to require a COMPLETE DISASSEMBLY - there are tiny tiny bits of aluminum in the main bearings, packed in between the main bearings and crank seals.. its in the main rod bearing..and its all in the bottom of the cases... THE ONLY way to effectively remove ALL this is to pull it apart.. this is not a hard job, but if you have never done it, PLEASE take it to a qualified professional.....it requires several special tools... .they may/should be able to tell you what happened to cause it too..
IF you do not do all this, you WILL have premature ENGINE FAILURE AGAIN!!!! and this time it could be worse!

Aug 12, 2017 | Polaris ATV

3 Answers

My son was riding his 2004 blaster was having a blast but ran it for about 4 hours. When he went to ride it home ess than 5 blocks away it stalled and the kick start seized and won't puch down. In addition...


Sounds like you need a rebuild. Dont use cheap china parts, go online to http://www.amazon.com/Wiseco-PK1089-2-Stroke-Piston-Top-End/dp/B0050FYN4Y/ref=sr_1_sc_2?ie=UTF8&qid=1420937950&sr=8-2-spell&keywords=yamaha+blaster+wise+co And get this. This should be everything you need to rebuild it. Now you need to MIX your oil. Not use the tank. Google blaster oil tank bypass and just remove the tank as it can tear up the engine badly. The oil pump can send shards of plastic into the crank and cause it to fail. Once you have done this, You can have the engine built, mix the oil 32:1 and insert into the gas tank. After this is all complete it should all be running even smoother then before. For any other help go to www.Blasterforum.com

Aug 08, 2013 | Yamaha 2004 Blaster Base

1 Answer

Engine wont start on my polaris big boss 500 6x6 after the piston and rings was replaced


First - Did you find ALL the pieces of the broken piston...if not...STOP and FIND them.. they are in the bottom of the crankcase...you engine WILL NOT live long if you have not gotten ALL the pieces--even the TINIEST ones out!! You mat have more damage than just a broken piston.. something caused it to break.. you may have cracked the crankcases...may have damaged the main bearing(YES) and/or damaged the crank bearing.. see if gas in leaking into the transmission oil.
There is an arrow on the piston that faces toward the EXHAUST port. If there are hole(s) in the piston, they go towards the INTAKE.
Do some more searching and repost the results for review!

May 22, 2017 | Polaris 2012 Sportsman Big Boss 6x6 800

1 Answer

250cc no compression piston going up and down


bad rings, bent valve, bad valve seat. make sure your oil pump is good once you figure out too.

Feb 12, 2012 | RTO Quads 125cc Full Size Adult 4 Wheelers...

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