2018 YZ450F Problems Round 2

blaze 57
Profile picture for user blaze 57
Posts
392
Joined
4/11/2018
Location
Inchelium, WA US
blaze 57 12/3/2018 12:26pm
12/3/2018 12:26pm
swtwtwtw wrote:
It’s normal. When a thumper is hot, it needs the throttle turned a bit to fire up. Our bikes do not have a choke, the button...
It’s normal. When a thumper is hot, it needs the throttle turned a bit to fire up. Our bikes do not have a choke, the button we push opens the throttle a bit, myself I just open the throttle myself and voila fires up no problem in gear or not hot or cold
Spot on! My 2012 yamaha 450 if you just take the slack out of the throttle..boom! fires right up. If you leave the throttle alone she is not going to fire when hot.
AndyH
Profile picture for user AndyH
Posts
7
Joined
11/14/2018
Location
GB
AndyH 1/1/2019 1:44pm
1/1/2019 1:44pm
Just a quick update, fitting the Twin Air Pro filter kit totally cured the problem, nice bit of kit.

Shame Yamaha can't supply the OE bike with a filter that actually does the job, saying that keeps the people at
Twin Air in work.
3
hassbeen 1/3/2019 3:48am
1/3/2019 3:48am
Something to note, not really related to filters or fuel clamps, but the bottom radiator hose is very exposed on these bikes. I damaged a head because if the hose being damaged during a race, spewing all the coolant out. I have since added protection around the hose. Probably worthwhile considering.
Jbulz
Profile picture for user Jbulz
Posts
871
Joined
3/29/2016
Location
Ithaca, NY US
Jbulz 1/4/2019 10:00am
1/4/2019 10:00am Edited Date/Time 1/4/2019 10:02am
I posted this in another YZ450F problem thread on here

These black plastic deflectors are what the Factory Yamaha guys were running at Unadilla to prevent packing the airbox with roost. Barcia's mechanic didn't know who made them, but it looks like it could be fabbed up in a few minutes and riveted on.



The Shop

See All »

Pit Row

See All »

Post a reply to: 2018 YZ450F Problems Round 2