it was a lot easier than I expected. most of the ones I have seen have those little shims you insert in the buckets to raise or lower the valves. I found the adjustment screws a lot easier to deal with.

I'm going to take a wild guess and say your issue is probably electrical related vs valves. valve check is never a bad idea on these four strokes though of course...

TrailBlogger i think you're right but I will still check. So happy these raptors don't use shims 😅

speaking of shims... wait till you see the latest project I just picked up LOL

Glad I could help!

TrailBlogger May I ask, where is it that you do all your riding. Your videos are amazing, some beautiful scenery for sure..

Luděk Skalický you're welcome :-)

Check your carborater, it could be something with that, but it is possible it's a valve issue I would take it in to get maintenance and get it checked out

You're welcome!

on an 08 raptor? you are saying I set them wrong?

TrailBlogger what did you set yours too?

LittleMoreLow 400ex never ran bolts myself but I asked same question to mr brogan and he said he does not run a tube

TrailBlogger thank you are you aware if he uses like some kind of silicone alround the bolts ?

LittleMoreLow 400ex no I don't think he does. I asked same question. His channel is hill climb Ohio Jeremiah brogan you should leave him a comment and ask. Pretty sure he said no to both tube and silicone

TrailBlogger ok thanks

It was more general maintenance and to rule it out as the cause of not running correctly

Oh I see yes I’ll do it for mine too thanks for the video bro and also I did hear u comment after so many hrs to check them for maintenance

I don't have a fuel pressure gauge but good suggestion. I can hear the pump priming, sounds pretty healthy, if I disconnect the line after it is primed fuel shoots out all over the place lol

TrailBlogger I picked up a fuel pressure test kit from Harbor Freight. And some extra fuel line was able to use a t fitting to check fuel pressure. Also may want to make sure your throttle body and injector is actually clean and spraying.

well I know where I am going when I Get off work lol harbor freight it is. i have another idea, posting a video about that one later tonight hopefully.

usually means too much fuel or not enough fuel! did you test TPS voltage?

the manual says to the valve check on it every 160 hours. if you are breaking it in brand new, do after first 20 and then 80 hours

TrailBlogger thanks much. The one I just got has 81 hours but idk if it's ever been done so I'll probably do it to be safe. Do you actually need a torque wrench or just snug everything? Also, what oil do you run and how frequently do you change it? Sorry for all the questions haha. Wanna make sure I treat my raptor right.

torque wrench is a good idea, I didn't use one but I would recommend it if you don't work on engines a lot so you don't accidentally overtighten or undertighten anything,.

wow! that is nuts but i bet 90% of people pay for it anyhow

Not me. Especially after watching this video! Thanks.

negative. issue is still present :-/

TrailBlogger Well on the bright side, at least the lash maintenance is done. You thinking ignition problems? I saw your vid on the compression test so it's not a bent valve. Maybe something with the timing? So many possibilities with these newer fuel injected engines. Stuck open injectors could also cause these symptoms. What are you thoughts?

Damn. Good luck figuring it out. Haven't finished video yet, but I was planning to check the valves soon on my raptor anyways so this should help.

Maybe its the sensor behind gearshift

Banshee Fever 750cc I'm going to start electrical stuff now that the mechanical portion is tested ( compression and spark seem ok ) throttle sensor, ecu or the wiring harness are suspect. Coil seems ok as its getting a healthy spark.