Complete Four Stroke Engine Rebuild - Everything You Need to Know Prior to Tear-down! Part 1

This engine rebuild series is going to completely cover the process of diagnosing a YZ450F four stroke dirt bike engine, the teardown process, as well as the rebuilding process. In Part 1 we are going to be covering what you need to check to see if your four-stroke engine needs to be rebuilt. This includes obvious signs as well as doing some in-depth testing such as a leak down test. We also go over the tools that you will need in order to efficiently complete the rebuild. And finally, we go over A few very common questions pertaining to engine rebuilds.

Time Stamps:
Overview of the series: 00:24
Leak down test: 03:23
Tool overview: 10:05
Frequently asked questions: 16:19

Part Links:

[michaelfmarcos]

I'm about to rebuild my first engine, a '99 YZ400F. I have no idea how well I'll do, and a friend who's much more experienced than I am told me how foolish of a task this was, but I'm feeling pretty confident with videos like these. I'll let you know how it goes!

[Prophitman]

knowledge is power. the more you know. excellent video, i look forward to the series

[cotyshotyou]

Bro you're good! The editing is on point, mic and picture quality are perfect. Informative and straight to the point. You should be getting paid by some corporation like Rocky Mountain ATVMC maybe even collaborate with them or one alike.

[alrichnolte]

As soon as I heard you say “detailed SERIES” I had to celebrate. This is exactly what I need!

[chrisk]

Yes, informative and very good descriptions of how to do the leak down. Cool attitude where it comes to how to do it, much appreciated.

[wyattcitizenzap]

wow look at that kick starter. WORN! thanks for the knowledge brotha!

[sypnie_nz]

The D zone, good helpful stuff/ video series was really helpful for newbie like myself as going fof a first time rebuild at home but
Me broke AF 180+ hours. Good till next season😂😂

[thetrailwaychildren]

Best video on rebuilding I've ever seen! Can't wait to watch the rest of the series. Subscribed 👍

[tonyhanson]

i always look for vids that are not done in a shitty garage. thx great vid

[cbadnc]

Glad to see you again! Great videos as usual!

[dinggle-ir]

im 16 and im rebuilding my first dirt bike i was really dumb and didn't think about checking my oil and was out on my first real ride was about 3 hours into it and my bike just stop running and stoped really hard its a 2007 rmz 250 and i havnt really found a good video series for my bike so im going to watch all of your videos and ill keep it updated if anyone is interested or need to know anything about a Suzuki 250 4 stroke i have the hole bike tear down to frame and am going to be putting more time and money into her then the bike probably worth but who cares keeps me out of trouble if im in my dads shop all night for a couple weeks 🤣

[pooyakastler]

Half time in and suscribed...thanks man🤝

[brunocastro]

Really nice videos man. Keep it going 💪

[treeslayer]

I like what you just said. In the intro. Subbing r now 😂

[chrisashley]

your videos are sick, I am literally picking the bike im about to buy based on whether you have made a video of it or not so i know how to take it apart if i have to lmao

[antoniofabing]

Great video man, very informative. Thanks.

[Mateo-qnjk]

Do you think I would be able to fix my 4 stroke with this guide and minimal experience?

[BossedUpBarter]

Do the hours reset on bike after rebuild ?

[Narblo]

Would you recommend rebuilding the engine just because? I want to see how the engine is and see if I can put it together again. I also have a hunch that it ran without a good oil for a while

[alekseyzaharov]

Подскажите пожалуйста, что за датчик стоит в левом патрубке на радиатор идёт ???