Just got an 07 rancher 420. Smokes. Came with piston, rings, the hone gasket kit and more. Great video. My son and I are planning to tackle it this weekend. Thank you for your detailed video
Lucky for me not so for older gentlemen. He was a mechanic fixing up this old bike, fell ill. The family let it sit 6 months. I take care of their equipment so they gave me this thing with battery ignition switch piston and rings extra wheels tires brake shoes and hardware plus parts for other bikes carbs lots of things. My boys and I fix and restore whatever we can get our hands on. We built a 212 to crazy fast then broke the crank took a crank out of much older 212 put it in and was better then ever. Man I really think it was like stroking it. I will not have boys who can not turn wrenches.
I used to be a mechanic cars and lite trucks. Also worked on MSC ships. Now I do mostly finish carpentry cabinets crown molding windows doors ect. I think I got this but I have never wanted a fuel injected bike. Can I stick a carb on it and still have electric shift work? Without that kit? Sometimes simple is better
I have same four wheeler and mine has just over 100 hours on it.. No problems at all until I changed the oil for the first time and now it smokes but only under heavy load/throttle. It's not using oil. Yes Ive changed the oil again using different type and checked filters and its still smoking.. I won this bike in a raffle so it sucks that its screwing up on me. What should be my first step? And does it sound major. I've never had it flooded. Yea I've ridden it good in mud and water holes but not excessive abuse or flooding out
If (God forbid) you had an oil leak after the engine was all assembled.... and all the plastic was reassembled.... you'd have to take it all apart to fix any problem. My point is: never reassemble the vehicle until you've heard the engine run. It's easier to fix something without the plastic and airbox installed rather than afterwards
Mine smoked bad at first start up for the first 15 mins after my top end rebuild. I don’t know if it was the new rings took a bit to finally seat, or if it was all the oil I used oiling things down on assembly. I put oil on my rings in around the piston, and I coated my cylinder down with oil when assembled it. John Talley on Partzilla said to, so I did. He’s the man. If he says to, you do it lol. I was freaking out mad at first tho then it eventually stopped once it all burned off.
a tip I've learned: when your done putting the valve keepers (called a cotter by Honda) tap on the top of the valve with a plastic hammer. This will help so 'seat' the valve keepers.
I got mine rebuilt and and it didn’t smoke for a while but now it does and even when I got it back it had a weird sound to it I think it was the valves but I’m not sure but the smoke will smell like regular exhaust smell and then I’ll smell oil burning
Hi, I enjoyed your work. Would it be feasible to fit the piston and rings into the cylinder on the bench first and then fit the 'assembly' to the con rod?
Blessings Tynka Tyme, I enjoyed your video, I am working on a 2012 420 FM that is also smoking. The ATV has been used in harsh condition such as mudding. I am looking at replacing the entire top end, Piston- valve seats. At the time the dealership cannot get their hand on parts, where did you get your parts from? Thanks for your reply
Love the channel !! :) What's a good deal on one of those 4x4 .... say, uh, like a 2010 , 2013 & or 2016 ? Running fine but smokes and needs a top end rebuild ? Thanks for your generous consideration, Steph
Yes it stopped completely. It was just blowing so much oil into the exhaust before it was fixed, it took awhile to burn all that oil out of the inside of the exhaust
Kade Staples thanks man! Glad you found it helpful. Please subscribe if you’d be so kind! Always trying to post a variety of videos on a variety of machines to help people out! Safe riding!
@@TynkaTyme I use Honda Direct Line (Ohio) for most all my Honda parts. Their prices are very competitive but it's the shipping that saves me money. Orders under $99 have a $7.50 shipping and over $99 the shipping is FREE.
Mine fell in a creek and bent a valve smokes bad on start up then dies down after about 2 mins and doesn’t smoke at all so I’m thinking it’s a bent valve
Definitely not a bent valve. If a valve was bent you would have low compression. Also, if a valve was bent, it wouldn’t just straighten up after 2 minutes. Sounds like you should do the same thing i did in this video and it will fix your problem, as long as the cylinder isn’t scored up too bad
I’m having trouble with the piston going back into the housing I’m on the last ring and it’s like it’s in but the piston won’t go all the wAy to the top of the housing it’s like it’s stuck
Joshua Strickland did you replace the piston? If so, you might have accidentally purchased the oversize piston, which won’t fit in the stock bore of the cylinder
Since more wear occurs at the top 1/2 of the cylinder (and virtually no wear occurs on the bottom 1/4 of the bore) it's better to measure ring end gap at or near the top side of the cylinder. You did exactly the right thing to position the rings (sliding the piston down the bore to position the ring) Good Technique! But it remains that by measuring the Ring End Gap at the bottom of the bore you'll get a more optimistic (or inaccurate) measurement than at or near the top of the bore.
Thanks for the comment! I’d love to agree with you, as your comment makes great sense. However, I’m a by the book kind of person. If the manual says to do it a certain way, that’s how i do it. Straight from the Honda 420 manual; “Insert each piston ring into the bottom of the cylinder squarely using the piston. Measure ring end gap”
@@TynkaTyme I commend you in following the manual. Unfortunately this time it's wrong. Wear occurs 'where the piston stroke is'. Measure from the cylinder top down about 10mm and then to the bottom of the stroke of the piston... usually about 34-50mm. This is where the rings wear on the cylinder. Ring end gap will be the greatest in this area. I've seen Honda revise their manuals (usually with a sheet that is glued over the existing page) when the information is inaccurate or needs to be updated. 35 years as a Master Tech and Certified Honda Tech status.
@@rayworx like i said, i agree. I am a jet engine mechanic for rolls-royce, and live our life in a manual. Can’t be wrong if you follow the manual🤷🏽♂️🤷🏽♂️
@@TynkaTyme good to know it was suck I've been a Honda fan my whole life and I see so many four wheelers burning oil and smoking that I was starting to lose faith in Honda I have a 2003 rancher that I think is starting to smoke it has never been sunk I can also say my dad's 300 4x4 it's a 91 model and it's very wore out low compression and smoking those 300s were probably the best bike there ever was
@@TynkaTyme my dad's has been rolling since 91 I've had that thing through so much deep water and mud and it just never quit even though it's burning oil you could clean the carburetor and it still run right now
My friend has a 2019 rancher 420 and we rebuilt the top end yesterday cause it was smoking rode it for 5 hours and it's still smoking bad makes no sense
Dusty Bowhunter i think it was sunk and water got in the cylinder and destroyed the rings. I honed cylinder, put new rings on, and valve seals, no more smoke now.
Did you think about checking the oil level?? I've seen a lot of people that wouldn't read the dipstick and just dump oil into the crankcase. Overfilling the crankcase can cause oil smoking. Granted it's not the only thing but you should always check the easy things first.... and changing the oil is a lot easier than doing a T/E overhaul.
Bubba Mcdonald on this particular machine, all i did was replaced valve seals (intake and exhaust), piston rings, cylinder gasket, head gasket. If it’s smoking, it’s either piston rings or valve seals unless your cylinder is in bad shape. If the cylinder is out of round oil will get past your rings. Keep in mind if it was smoking badly before you replaced those parts, it’s probable that oil build up is in your exhaust and you need to ride it a lot to burn all the oil that’s sitting in your exhaust.
Just got an 07 rancher 420. Smokes. Came with piston, rings, the hone gasket kit and more. Great video. My son and I are planning to tackle it this weekend. Thank you for your detailed video
Replace valve stem seals while you’re in there!! Good luck!!
@@TynkaTyme looking up parts now. Thanks for the reply. Subbed
Lucky for me not so for older gentlemen. He was a mechanic fixing up this old bike, fell ill. The family let it sit 6 months. I take care of their equipment so they gave me this thing with battery ignition switch piston and rings extra wheels tires brake shoes and hardware plus parts for other bikes carbs lots of things. My boys and I fix and restore whatever we can get our hands on. We built a 212 to crazy fast then broke the crank took a crank out of much older 212 put it in and was better then ever. Man I really think it was like stroking it. I will not have boys who can not turn wrenches.
What do you think of lite head porting/ gasket matching? Worth it? Not a race bike I know but I'm thinking why not
I used to be a mechanic cars and lite trucks. Also worked on MSC ships. Now I do mostly finish carpentry cabinets crown molding windows doors ect. I think I got this but I have never wanted a fuel injected bike. Can I stick a carb on it and still have electric shift work? Without that kit? Sometimes simple is better
I have same four wheeler and mine has just over 100 hours on it.. No problems at all until I changed the oil for the first time and now it smokes but only under heavy load/throttle. It's not using oil. Yes Ive changed the oil again using different type and checked filters and its still smoking.. I won this bike in a raffle so it sucks that its screwing up on me. What should be my first step? And does it sound major. I've never had it flooded. Yea I've ridden it good in mud and water holes but not excessive abuse or flooding out
If (God forbid) you had an oil leak after the engine was all assembled.... and all the plastic was reassembled.... you'd have to take it all apart to fix any problem. My point is:
never reassemble the vehicle until you've heard the engine run. It's easier to fix something without the plastic and airbox installed rather than afterwards
Mine smoked bad at first start up for the first 15 mins after my top end rebuild. I don’t know if it was the new rings took a bit to finally seat, or if it was all the oil I used oiling things down on assembly. I put oil on my rings in around the piston, and I coated my cylinder down with oil when assembled it. John Talley on Partzilla said to, so I did. He’s the man. If he says to, you do it lol. I was freaking out mad at first tho then it eventually stopped once it all burned off.
a tip I've learned: when your done putting the valve keepers (called a cotter by Honda) tap on the top of the valve with a plastic hammer. This will help so 'seat' the valve keepers.
Nice video man, thanks for sharing!
First it’s kinda weird that u posted so late I like it keep the good work on the that grind
Cheeseball- YT crazy world schedule has me all screwed up lol.
Tynka Tyme I understand I am trying to make on YT as well but u always got to keep grinding till u make
I got mine rebuilt and and it didn’t smoke for a while but now it does and even when I got it back it had a weird sound to it I think it was the valves but I’m not sure but the smoke will smell like regular exhaust smell and then I’ll smell oil burning
Tristan Broadus did you replace the valve seals? What condition was your cylinder in when you took it apart?
Tynka Tyme yes and I had to get a new cylinder
Where you located I need mine fix a 2006 Honda fourman 500 it smoke like that one
Good video. I have the exact same honda. 2019, red, 2×4, foot shift. Bought it new haven't had any problems with it.
Thanks. I have a 2008 with only 2000 miles and it’s smoking. Neighbor gave it to me. stuck in reverse was a easy fix
Awesome! Sounds like some easy fixes then! Good luck and thanks for the comment!
Where did you find the all the specs for torqued and the gaps for the rings etc. I have a 07 420, would it be the same?
Good video! Do you happen to have the Honda repair manual in PDF form that you could be send me?
Where are you from I need to get my 2020 honda rubicon done
420s must be bad on valve seals, I have a 2018 4x4 and I've had to do it on mine
What is the sequence and torque specs you used on the valve/rocker cover? Please.
Hi, I enjoyed your work. Would it be feasible to fit the piston and rings into the cylinder on the bench first and then fit the 'assembly' to the con rod?
You can do it that way, I’ve done it before. Just make sure you leave the wrist pin hole out of the cylinder so you can get your wrist pin in
Great videos man keep up the Honda repair vids
EaZier Clutch thanks for the support! I’ll try!
Blessings Tynka Tyme,
I enjoyed your video, I am working on a 2012 420 FM that is also smoking. The ATV has been used in harsh condition such as mudding. I am looking at replacing the entire top end, Piston- valve seats. At the time the dealership cannot get their hand on parts, where did you get your parts from?
Thanks for your reply
Do you have to do a piston and jug? Mine smokes similar to yours I’m just not sure if I should splurge for a jug or not
Only if they’re in rough shape.
Do you have link to the kit?
Love the channel !! :)
What's a good deal on one of those 4x4 .... say, uh, like a 2010 , 2013 & or 2016 ? Running fine but smokes and needs a top end rebuild ?
Thanks for your generous consideration,
Steph
How do u take the plastics off on the motor
Did the smoke eventually stop completely and get all the old smoke out of the exhaust?
Yes it stopped completely. It was just blowing so much oil into the exhaust before it was fixed, it took awhile to burn all that oil out of the inside of the exhaust
@@TynkaTyme okay good deal, thanks
what could be wrong with mine its the same one as yours but when i try to rev it it just bogs down really bad and smokes really bad
What size Flex Hone did you use and how coarse?
My 2020 rubicon has 600 miles 130 hours and smokes really bad what causes this its so new
This was very helpful because I’m going to do the same thing to mine
Kade Staples thanks man! Glad you found it helpful. Please subscribe if you’d be so kind! Always trying to post a variety of videos on a variety of machines to help people out! Safe riding!
Great video! Where can I buy the piston rings or I should buy the top end rebuild kit? Thank you
I order all oem parts. Partzilla.com, Motosport.com, or rockymountainatvmc.com is who i use.
@@TynkaTyme I use Honda Direct Line (Ohio) for most all my Honda parts. Their prices are very competitive but it's the shipping that saves me money. Orders
under $99 have a $7.50 shipping and over $99 the shipping is FREE.
What was the part number for the valve seals? Getting mine from partzilla as well
According to Honda Direct Line (Ohio) the valve guide seals are the same for both intake and exhaust valves. 12208-MBB-003 Listed at $8.08 each
Ray
How much money did you spent + labor?
Mine fell in a creek and bent a valve smokes bad on start up then dies down after about 2 mins and doesn’t smoke at all so I’m thinking it’s a bent valve
Definitely not a bent valve. If a valve was bent you would have low compression.
Also, if a valve was bent, it wouldn’t just straighten up after 2 minutes. Sounds like you should do the same thing i did in this video and it will fix your problem, as long as the cylinder isn’t scored up too bad
@@TynkaTyme alrighty thx man I’ll have too just get in there and find out
Where did you order the parts
I’m having trouble with the piston going back into the housing I’m on the last ring and it’s like it’s in but the piston won’t go all the wAy to the top of the housing it’s like it’s stuck
Joshua Strickland did you replace the piston? If so, you might have accidentally purchased the oversize piston, which won’t fit in the stock bore of the cylinder
It’s tuff. Just gotta keep playing with it
What causes this?
Since more wear occurs at the top 1/2 of the cylinder (and virtually no wear occurs on the bottom 1/4 of the bore) it's better to measure ring end gap at or near the top side of the cylinder.
You did exactly the right thing to position the rings (sliding the piston down the bore to position the ring) Good Technique! But it remains that by measuring the Ring End Gap at the bottom of the
bore you'll get a more optimistic (or inaccurate) measurement than at or near the top of the bore.
Thanks for the comment! I’d love to agree with you, as your comment makes great sense. However, I’m a by the book kind of person. If the manual says to do it a certain way, that’s how i do it. Straight from the Honda 420 manual;
“Insert each piston ring into the bottom of the cylinder squarely using the piston. Measure ring end gap”
@@TynkaTyme I commend you in following the manual. Unfortunately this time it's wrong. Wear occurs 'where the piston stroke is'. Measure from the cylinder top down
about 10mm and then to the bottom of the stroke of the piston... usually about 34-50mm. This is where the rings wear on the cylinder. Ring end gap will be the greatest in this area. I've seen Honda revise
their manuals (usually with a sheet that is glued over the existing page) when the information is inaccurate or needs to be updated. 35 years as a Master Tech and Certified Honda Tech status.
@@rayworx like i said, i agree. I am a jet engine mechanic for rolls-royce, and live our life in a manual. Can’t be wrong if you follow the manual🤷🏽♂️🤷🏽♂️
Did you just buy stock size rings?
Yes
Thanks for sharing
How do you have to rebuild a engine on a four wheeler that's that new that's a 2019 how many miles an hour are on it
I bought it needing rebuilt.. previous owner sunk it in water
@@TynkaTyme good to know it was suck I've been a Honda fan my whole life and I see so many four wheelers burning oil and smoking that I was starting to lose faith in Honda I have a 2003 rancher that I think is starting to smoke it has never been sunk I can also say my dad's 300 4x4 it's a 91 model and it's very wore out low compression and smoking those 300s were probably the best bike there ever was
@@duanesharpjr9512 i agree with you 100%. Hard to beat a 300. Those things are tanks
@@TynkaTyme my dad's has been rolling since 91 I've had that thing through so much deep water and mud and it just never quit even though it's burning oil you could clean the carburetor and it still run right now
@@TynkaTyme would really like to get the motor rebuilt on it but I know nobody here in Louisiana to do it economically
Abt how long total did the process take you? Nice set up in your shop man!! 🤘🤌
Maybe about 3-4 hours. It’s not too bad of a job. Thanks🤙🏽🤙🏽
My friend has a 2019 rancher 420 and we rebuilt the top end yesterday cause it was smoking rode it for 5 hours and it's still smoking bad makes no sense
What was the go with it mate?
What kit is this?
Rumberto Wang i used only oem parts on this rebuild. Had to find each part individually and purchased from partzilla.com
Why do you think it was smoking in the first place?
Dusty Bowhunter i think it was sunk and water got in the cylinder and destroyed the rings. I honed cylinder, put new rings on, and valve seals, no more smoke now.
Did you think about checking the oil level?? I've seen a lot of people that wouldn't read the dipstick and just dump oil into the crankcase. Overfilling the crankcase can
cause oil smoking. Granted it's not the only thing but you should always check the easy things first.... and changing the oil is a lot easier than doing a T/E overhaul.
Can u maybe send me all the parts u needed because this is kicking my ass
Bubba Mcdonald on this particular machine, all i did was replaced valve seals (intake and exhaust), piston rings, cylinder gasket, head gasket. If it’s smoking, it’s either piston rings or valve seals unless your cylinder is in bad shape. If the cylinder is out of round oil will get past your rings. Keep in mind if it was smoking badly before you replaced those parts, it’s probable that oil build up is in your exhaust and you need to ride it a lot to burn all the oil that’s sitting in your exhaust.
Ephesians 5:4 in the Bible: nor should there be obscenity, foolish talk or coarse joking which are out of place, but rather thanksgiving
🙅♂️🙅♂️🤙🤙
John 3:3 in the Bible: Jesus replied, very truly I tell you, no one can enter the kingdom of God unless they are born again
The choice of wide angle lense ruined video. Can’t see squatt. Exiting out
Unfortunately that’s a go pro for you. Not sure what i am going to do now without your single view!
Good bye 👋 don't let the exit button hit you in the ass on the way out ?