Why Does My Quad Smoke??

Рет қаралды 89,481

4 жыл бұрын

I end up going through my 1999 Honda 400ex to see why it is smoking. These quads are known to smoke, and fining one that doesn't is pretty rare. #SmokeyGirl, #Honda, #400cc,
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Пікірлер: 348

@2vintage 4 жыл бұрын

Well this 1999 Honda 400ex is one smokey girl...Maybe it just wants to be a 2 stroke lol Check out www.Laptwo.com for motorcycle, ATV, Scooter, and truck parts! Please SUBSCRIBE and SHARE if you enjoyed the video! It helps me out a lot! Thanks for all the support!

@scoutj9441 4 жыл бұрын

pls rebuild it. Probably the piston ring must change.

@rorybester6371 4 жыл бұрын

Oil rings could be buggered or or it could have a lot of oils built up in the the exhaust i had one and it had same problem which was just the exhaust best of take the tip off and put the rest in a hot Fier and it will clear it all out

@stefanmalpass3558 4 жыл бұрын

U need to start presswashing ur stuff before u start working on it I hate ppl that work on dirty stuff

@ziptyracing6713 4 жыл бұрын

It’s definitely more put toward valve seals but the oil ring could be going bad but it isn’t the worst because my 400ex has a bad oil ring and it won’t even run half decent because the thing runs with oil in the gas due to a bad oil ring.

@ikill804_yt3 4 жыл бұрын

Do the oil ring on the the piston and the head gasket

@AIRHAWK-me4rz 4 жыл бұрын

Ver happy for you joe the way that the channel has grown and im glad that you get do what you love everyday keep up the good worl and congrats to you and jade on the new house 👍

@haydencarter2313 4 жыл бұрын

Keep the vids coming man, lovin it

@1ksquid07stuntlife6 4 жыл бұрын

Definitely needs a top end . Smoke under load / power is rings . These 400s are known to get smokey . Need to get a mic and some telle gauges and measure the cyl and piston to see if she's within spec .

@charlieshell5231 4 жыл бұрын

This man actually knows what he's talking about. My quad needed rings and did the same thing

@carlosquintana6930 4 жыл бұрын

Yeah new top end in that thing is gonna be hard to kill

@tonymassingill6032 3 жыл бұрын

Valve guides nobody ever puts them in Honda's are bad for it or rings .

@roryk.3568 2 жыл бұрын

More than not a bad valve guide will smoke on startup and clear out as it warms up with an occasional puff of smoke. My bet is rings as well, gets progressively worse as it warms up.

@ba8265 3 жыл бұрын

Your brilliance is so bright I gotta wear shades. Best part of all this is the amount of people out there that see you as a knowledgeable person

@jeredalmeida1880 4 жыл бұрын

It's the oil ring but might as well replace the whole ring set. For someone who flips so many older bikes, I don't think I've ever seen you hone ONE cylinder. That little bit (bit) goes a long way. What's happening is there is wear on the rings or possibly the cylinder wall. On the down strokes, the oil is making it's way into the combustion area above the piston and igniting. Hence the smoke. Just like in a 2 stroke, your burning lesser refined petrol. Since a four stroke has such high compression, it's still running but if this were a two stroke, that little bit of blow-by would cause stalling or failure. It could also be valve seals or the valves themselves as oil could be making it's way into the combustion chamber from above.

@Builditathome-Restoration 4 жыл бұрын

Yes man that are bad valve seals i had the same problem on my quad build series.

@williamkinnane1606 4 жыл бұрын

Informative vid many thanks Joe!!!

@mattgyver1 4 жыл бұрын

I can’t believe changing the oil and cleaning the carb fixed the smoking. I was guessing it needs to be honed and new file fit ring set at the least.

@chadriddle3517 4 жыл бұрын

Good video joe! Love the 400ex they are fun an reliable !

@Pittsburgh-412 4 жыл бұрын

Honda 4 strokes usually never need anything fixed thats why its never been apart. They will run forever

@Stoner-dk8ox 4 жыл бұрын

Lol I don't believe that every engine needs maintenance 4 strokes need the valves lashed every so often and in this video it needs rings lol 2 strokes run forever lol alot of plane engines are 2 stroke

@Pittsburgh-412 4 жыл бұрын

@@Stoner-dk8ox Notice i did say Honda 4 strokes. The motors definitely depend on the owner/rider and the make. I don't care what anyone says, a 4 stroke honda is the most reliable engine ever put on a cycle. Period.

@ziptyracing6713 4 жыл бұрын

The 400ex is known for quick piston ring failure and valve seal failure both causing smoke my 02 400ex has a bad oil ring on the piston causing the engine to run like a two stroke mixing oil in the gas burning the oil

@ridgerunner1015 4 жыл бұрын

It's a 2 stroke that he is working on not a 4 stroke

@hickboy7494 4 жыл бұрын

Honda’s do run forever. I had a ‘97 300ex and it went over a year without me putting oil in it and it still started up every single day with no hassle. Even after I got rid of it, it still ran fine on the same top end and everything. He just told me the other day it still runs lol.

@joemomma8092 4 жыл бұрын

“Well we know where the oils going, let’s clean out the CaRbErAtOr”

@andrewjacobson4753 4 жыл бұрын

😆

@ChickenParm152 4 жыл бұрын

lmao

@seanedwards2010 4 жыл бұрын

🤣🤣🤣

@mrdumbass6765 4 жыл бұрын

Today me and my dad are fixing the carberater on a new 125 mini four wheeler

@williampierce8643 4 жыл бұрын

Don’t buy cheep China parts when rebuild it buy oem parts

@spittindirt4444 4 жыл бұрын

Its actually a pretty common problem with these quads, a lot of the old ones that you find around normally smoke. As other people have already said its the valve seals. My suzuki 230 somtimes burns a little oil when its started after sitting for a while.

@danwhite8502 4 жыл бұрын

These quads are notorious for valve seals I’ve changed them more times than I’d like to count here at my shop. I wouldn’t waste your time with cleaning the carburetor and I wouldn’t give it an oil change until after you change the valve seals and have the motor apart.

@Conffredo 4 жыл бұрын

That intro was clean hahaha

@ml-w6130 4 жыл бұрын

Nice vid, love your channel. Hi from Sweden. I don´t have a cross bike but I do have a moped from the 60´ s

@2vintage 4 жыл бұрын

Awesome!

@bryantucker6725 4 жыл бұрын

I just rebuilt a 2007 new cam valve valve ceets but if it’s been smoking before u got it then there is oil in the exhaust it will smoke until it burnt out

@mikemartin2423 4 жыл бұрын

I'll tell you what happen to my recon 250....I sank it in muddy water and it started smoking after that so I would guess that may have happened to your 400 with that open filter box ?.....I would do a full top end rebuild on it....so worth it to save a classic like that....keep up the great work 👍👍👍

@thomasmarshall5728 4 жыл бұрын

It's rings or a blockage in the breather. Valve stem seals will smoke at idle not under load.

@joemumma5058 4 жыл бұрын

It's not valve seals as the smoke would clear after a short run time but the smoke is pretty consistent. Try dropping the viscosity of the oil and replacing oil rings. A four strokes oil rings can blow while the compression rings are still good and the bike runs great. So a thicker oil synthetic oil, and new rings.

@evensilset5522 2 жыл бұрын

I think you solwed my problem on my wr250f

@seanedwards2010 4 жыл бұрын

Why would you clean the carb , that won’t stop it smoking, it’s the valve stem oil seals

@m8fusion712 3 жыл бұрын

It's a really nice 400ex & good video

@edcase7888 4 жыл бұрын

you should blow all that crap off the carb with an airline before putting it in the cleaner then all that thick grime isnt flowing through you're carb and fouling up you're fluid

@larrywarner9314 4 жыл бұрын

I'd hone the cylinder new rings and valve stem seals bud .

@rathburnoffroad7249 4 жыл бұрын

what this mans said ^

@Hanky_Bannist8r 4 жыл бұрын

I've unstuck rings with some atf down the spark plug hole on an old atc 200x. I honestly think that's what wrong. If it were the valve seals you would only see smoke on startup after sitting.

@jackpelliccia6294 4 жыл бұрын

Great video 👍👍👍

@jaceperez4281 4 жыл бұрын

Your not supposed to twist the dip stick in when checking the oil level. Just push it in until it stops on the threads. So you probably have less oil than you actually think

@mcgrawmadness5990 2 жыл бұрын

Most Honda Manuel’s tell you to screw it back in

@PrevailArmy Жыл бұрын

@@mcgrawmadness5990 not this 1

@carsonsmith3959 4 жыл бұрын

I bought a 2001 with a 440 kit and stage 3 hot cam for $1100, with no leaks, no smoke, no valve tick, nothing, very good quad

@zacklataille342 4 жыл бұрын

Valve seals you will notice when u first start the bike I always thought it seeps thru into the cylinder when the bike sits

@spittindirt4444 4 жыл бұрын

Exactly!!

@abg_b6005 4 жыл бұрын

You literally just save my quad bro it definitely was my seals

@Codyrosa 4 жыл бұрын

Correct. It'll smoke at first and go away. Rings if its a constant smoke.. unless you literally have no valve seals lol.

@1986Honda4trax 4 жыл бұрын

For whatever reason my honda trx250 never burns any oil idk why, i know its not uncommon for them but i guess i got lucky with mine haha

@colin300 3 жыл бұрын

Seals and.smels like burnt oil

@justinhennigar3830 4 жыл бұрын

Wheel shake could be caused by the tires being toed outward.

@huebifix7718 4 жыл бұрын

A easy Tipp: blue smoke = burned Oil Black smoke = Fuel problem's.

@danjim7056 3 жыл бұрын

White equals coolant

@sidewaysizaiah4496 4 жыл бұрын

It needs a top end mines did the same thing I try everything and it smoked till I put a top end

@joeloyd56 Жыл бұрын

I appreciate the video.

@wd-40everything65 4 жыл бұрын

Build a wheelie bar for it to help train your wheelie skills and clutch throttle and rear brake coordination!

@nathangregory9002 4 жыл бұрын

The king of taking apart everything but what needs to be fixed

@xfiringsquadx 4 жыл бұрын

You’re not supposed to screw the dipstick back in when checking the oil level. Your oil was extremely low.

@mesggdaahbf5786 4 жыл бұрын

Yeah I don’t think they have a clue what they’re doing with this stuff

@LiveFreeOrRIP 4 жыл бұрын

you are correct. after you take it out you wipe it off and then place it back in all the way do not thread it back in. Just stick it in and back out and thats the oil level. However the jug makes it pretty forgiving. If you are doing it from the crank case that oil would need to be perfect.

@sarahsmith1575 3 жыл бұрын

You are supposed to screw the dipstick in

@sarahsmith1575 3 жыл бұрын

@@mesggdaahbf5786 yeah he does check out his newer videos he can rebuild a 4-stroke engine better than I can

@danielbeltran9852 9 ай бұрын

Hey, I have a 03 trx 250 ex that idles super super high at start. Adjusted the screw on side of carb but it doesn’t affect the idle. What do you think is happening? I’m not a mechanic, just started working on this stuff.

@ronniewilliz153 4 жыл бұрын

Nothing but a new oil ring is gonna fix the dam smoking. Maybe just maybe the vales are not seated right. But i like how optimistic you are it not needing to be rebuilt tho. I do the same ill try everything else before i break down a fix the problem u gotta try atleast. An have u started learning how to properly tune things. I know ive said it in the past but you'll get alot more performance out of any bike if you know how to tune. An pls dont use a flat head to gwt the 2 cases apart you will dent it an it will not seal right yes im sure you where carful an what not but so was I when i use to do that untill u put a hairline gash in a case once an had to double up on gaskets. An yes i did sand it down to get a flat surface so it sealded again but use a dead blow hammer or tap on the case to get 1 to fall off.

@TheTojocat 4 жыл бұрын

ya dont need to split the cases to fix a smokey exhaust, its a top end issue, on a single cylinder 4 stroke it would take half a day so rebuild that top end. dont even need to pull the engine out.

@matt12251975 4 жыл бұрын

Did you check the headlight fluid?? Sometimes that will help the smokey engine issue ... 😁

@ET-wh9pr 4 жыл бұрын

18:23 When I go to take a piss in the morning

@kyleglenn4893 4 жыл бұрын

If it is valve seals they are not super hard to do but like you said you might as well do rings since its a couple of more bolts to make sure the motor feels good and do break it in those gaskets on the head really to need time to set in my buddies blew his valve cover gasket directly after rebuilding the whole motor because he decided to tp rip on it for like 10 15 minutes during break in

@sethgarrett1994 4 жыл бұрын

Adjust the valves replace rings and all top end gaskets just to be safe permatex copper works great for high temp applications

@BlahBlah-dh7sl 4 жыл бұрын

Love your content bro nothing but love for ya 💯💯

@2vintage 4 жыл бұрын

Thank you!

@redneck2303 4 жыл бұрын

I've got a 300ex it smoked when I first bought it 7 years ago I put new rings in it never smoked again

@jrandom2995 4 жыл бұрын

Great video. You made some good progress on that machine. I feel it needs that top end re-build. I think you’ll have a good solid machine after that. I’d hang on to it. They don’t make sport quads like that anymore. Nice 4 stroke for those winter rides around your new neighborhood! Just throw a silencer in there. Keep up the videos.

@austintomblin523 4 жыл бұрын

When doing wheelies just remember Foot Brake.

@natesharlette 4 жыл бұрын

Sounds like my Predator 500 and my predator has a bad seal so it has a tiny bit of blue smoke when I rev it up, but I’m glad it’s not the rings that I have to replace on it, it’s just a seal.

@georginarojas7582 3 жыл бұрын

If your case vent is going into your air box the filter will pull oil in the carburetor? When poping wheelies this happens to some quads or Yamaha tri moto 200

@mikeschlup5279 4 жыл бұрын

I have an o1 rancher. Put new piston and rings and an used ebay head. With new valve seals...smokes almost as bad as this one does...runs great though!

@briancrull8678 4 жыл бұрын

Exhaust valves and seals . Is that plug or piston have burnt oil residue on it . My old sportster started smoky, fouled plugs . Skip sea foam That’s for marine and outboards 2 stroke . Maybe rings but I’m Going exhaust valve and seals

@chadriddle3517 4 жыл бұрын

I swear it cracks me up when I see negative smart ass comments on this page !!! They are just jealous it’s not them doing good on KZfaq !! Keep it up brother ! Love all the content I don’t miss a video an I appreciate you buying all the varieties of quads an bikes so glad I found this channel awhile ago ! Keep doing exactly what you have been everybody likes it

@parkercasteel795 4 жыл бұрын

I put regular 10w 40 Valvoline oil in mine I have read it will make the clutch slip should I go ahead and change it again or wait till next oil change

@nickygray4691 3 жыл бұрын

Hey I have a question do you have to jet a carburator if you put a slip on on the bike

@cameronbelk3474 2 жыл бұрын

Quick question, what causes the Honda 400 to back fire

@michaelcanavan825 4 жыл бұрын

When you do wheelies try putting one foot back

@eero1722 4 жыл бұрын

Your videos are THE BEST

@rickjames4630 4 жыл бұрын

Time for a freshened up top end!!!

@Baconface95 4 жыл бұрын

It needs new rings on the piston. Had the same problem. Fixd mine.

@Abrahamf1467 4 жыл бұрын

To check the oil you need to have the bike run for a little

@matejkovacic4443 3 жыл бұрын

I have also problem with my Zongshen 250 quad.When i rode one lap in forest it starts smoking blue.Please can someone give me advice.

@jamesploof3795 4 жыл бұрын

You know what you have to do, tear it down, replace what you have to then enjoy a nice crispy quad or sell it for more money! Fix the damn thing you have the cash!

@Baconface95 4 жыл бұрын

Also tou can do a valve adjustment to see if its valves or not. If its burning oil. More than likley. Needs piston rings.

@Sjr41511 4 жыл бұрын

Hey I have a 99 400ex & it runs decent on low end around my yard but when racing or any full throttle runs after I pull in the clutch to slow down the quad dies. New carb but a aftermarket car, anyone kno my issue?

@OlStan7498 4 жыл бұрын

Use that back break and learn the balance point. Get those front tires up there! The easiest to learn is to tip her over a few times.

@mototommy5525 4 жыл бұрын

Ex 400 are common to have bad valve stem oil seals overtime, change them and guarantee it won't smoke

@louisjohnsonjr.4934 3 жыл бұрын

First thing I would have done is check the rings. Its a Honda the fuel and carb were all fine and that wouldn't cause it to consume oil the rings may be bad or the rings may have moved and lined up on the piston . The rings need to be spaced apart with there gap if they aren't itll continue to smoke long as its like it is. So thats about the only thing that'll cause oil consumption is the rings are put of place or need replacing. Even if it was the valves you'd be able to tell right off by the sound and it won't run right.

@michaelkahler7981 4 жыл бұрын

Check your valves Honda 400ex are known for valve issues. The ltz/kfx/dvx are known for electrical problems. I’ve owned multiple 400ex and ltz and all the 400ex needed valves adjusted

@otfdrowsq2032 4 жыл бұрын

Why do you hold the clutch in when you start it ? If it’s neutral you don’t have too.

@finster7582 4 жыл бұрын

Who cares if it smokes? Ride that thing til she needs a rebuild..😆👍👍👍👍👍👍👍👍

@Ronnie_ColemanTopG Жыл бұрын

Mine bogs down when I continue to do that

@jadentamburro790 4 жыл бұрын

hey joe would you be able to ship any bikes or quads to stamford ct? i can pay for shipping. tell me if you have anything for sale(it has to be in good condition.)

@wd-40everything65 4 жыл бұрын

If you're gonna pull the top end apart may as well do a complete top end service! Sad part is you just wasted money on the new oil you just put in and please don't attempt to reuse it! Get rid of the K&N filter and get a good quality air filter for it while your at it! Once done follow the proper break in procedure to seat the rings.

@lakeshorerides 4 жыл бұрын

Everything this man said ^ k&n is a no go for any dusty environments. Atleast get a filter sock. k&n oil filters are a different story though. They work great and are the best you can buy for the money.

@mitch9509 Жыл бұрын

What would be considered a good air filter for a 400ex?

@MrColdwatercanyon 4 жыл бұрын

Those are good all around bikes

@thomatyessir9123 4 жыл бұрын

I’ve had 4 of these bikes and I promise you a fresh oil change won’t change anything.. and sea foam would make it even worse, they smoke from old valve seals and worn out rings but will run forever

@guso3325 4 жыл бұрын

5:01 that's what she said lol

@danielcastelow7523 4 жыл бұрын

Need to clean the air filter to

@creamer247365life 4 жыл бұрын

Start with a set of rings , it can have good compression an the oil still get passed the oil ring , way easier job then to try an do valve seals first , i wouldnt run it like that youll hurt something more in the long run , if its burning that much oil its not valve seals

@eamonnhermans2650 4 жыл бұрын

You don't ride a 4 stroke correctly, you need engine breaking on that beast and not holding in the clutch

@shanemelochick2765 4 жыл бұрын

I do it too sometimes, when you ride 2 strokes a lot, it’s kinda in your mind to pull the clutch when decelerating

@austinmartin8021 4 жыл бұрын

Mine smoked but just put little oil in before a ride and never had a problem with it had plenty of power

@kalefree6007 4 жыл бұрын

Holy that thing is huge.. prolly says that a lot lol

@larrywarner9314 4 жыл бұрын

You need a bigger sonic cleaner bud .

@86czr7 2 жыл бұрын

Mine smokes when cold and goes away once warmed, already replaced the valve seals and no change

@Ronnie_ColemanTopG Жыл бұрын

You should make a video on cleaning a gas tank there is rarely any videos

@yungBitta291 4 жыл бұрын

The head pipes probably full of oil after it’s been rollled I’ve seen a few do that after a few Jill climb flips

@sevendyseven4090 4 жыл бұрын

It smokes like that because the WD40 O-ring gaskets are dried out

@wd-40everything65 4 жыл бұрын

Oh shit not a blown WD-40 seal they are a pain to replace! Could be the WD-40 after burner thruster valve is plugged and preventing it to advance to warp speed mode.

@mysteryman3255 4 жыл бұрын

just thought i would let you know that there is a specific way to check the oil on a 400ex

@muntecummings7650 4 жыл бұрын

new top end

@daniellunsford2708 4 жыл бұрын

Its most likely just the oil rings I had the same problem on my xr250 burnt so much oil it covered your back when you rode it just put an oil ring in it and was fine

@ohuigin9249 4 жыл бұрын

Valve seals? You mean Valve guides? That's were the problems is. I will say it was great entertainment watching you do all that, thinking it would cure the burning oil issue though. Lmao. You forgot to change the muffler bearings though. I think that would have had a better chance of fixing the smoking problems than all that you did try haha. Now to be serious order you the guides an then do a video fixing the smoking problem.

@LiveFreeOrRIP 4 жыл бұрын

Hail the king of the trails 400ex. Its not always about straight line speed. For a sport atv for trails the 400ex or 400x is about as good as it gets. and to me is Plenty fast. Make sure you check out Rocky mountain atv. They did a full video on replacing the piston and jug with a kit they sell for like 200 bucks. and they show step by step instructions. 400 is an amazing bike... You wont sell this one easy..

@IllestA4 4 жыл бұрын

Ltz400 are a wayyyy better trail bike, 400ex or no slouch but the ltz just gets it so much better and I have a 400ex, ltz and a “440ex”

@chrismays7455 4 жыл бұрын

I had a Suzuki quad sport ltz 400 it did the same thing it was the valve seals

@franswa259 4 жыл бұрын

Piston, and rings are cooked man, its bypassing through the cylinder and burning oil

@demekamitchell8338 4 жыл бұрын

need to change the whole exhuast also do piston rings and new top end gasket she fly

@davehouston1410 4 жыл бұрын

Drop a 11.5:1 compression piston in there bro . That motor is like a very low compression motor . In fact you might be able to get a 12:1 wiseco that can run 91 fuel . It will make it way faster . I think it’s a 9:1 piston stock . Might want to throw a cam in there too . It will be way faster bro !