Engine stuttering under acceleration

[miguelix]

7 hours ago, betoney said:

Just a reminder, NEVER rely in the the service manuals recommended interval for your air filter, always use real world conditions.  I believe Yamaha recommends every 24,000 miles, I clean the filters on both bikes about every 5,000 miles and they are always dirty and full of bugs.

Indeed. Giving the condition of the air filter I'll shorten the service. In my previous bikes and cars I was perfectly fine by replacing the air filter every 2 years or 20,000 Km (6,000 miles)

 

4 hours ago, Ride365 said:

Is that an OEM or garbage K&N filter?

It's the OEM factory one, I've replaced with a Hiflofiltro.  This brand worked very well for me in my old Ninja 650R and it's price is a third of the Yamaha OEM filter.

I'm thinking about going OEM oil and filter the next time but not sure if they are worth the money.

 

28 minutes ago, 2and3cylinders said:

And as I mentioned before as long as you're in there playing with the throttle bodies and what not

Check D'valve lash, twenty four thousand miles on them is also too much

At least for the first check and the second

I would have liked to do the valve clearance check but I was unable to get the valve cover gasket on time.

I've bought the gasket alongside feeler gauges and I'm planning to get or build myself the throttle body sync tool.

 

 

Than you all!!

[2and3cylinders]

12 hours ago, miguelix said:

Indeed. Giving the condition of the air filter I'll shorten the service. In my previous bikes and cars I was perfectly fine by replacing the air filter every 2 years or 20,000 Km (6,000 miles)

 

It's the OEM factory one, I've replaced with a Hiflofiltro.  This brand worked very well for me in my old Ninja 650R and it's price is a third of the Yamaha OEM filter.

I'm thinking about going OEM oil and filter the next time but not sure if they are worth the money.

 

I would have liked to do the valve clearance check but I was unable to get the valve cover gasket on time.

I've bought the gasket alongside feeler gauges and I'm planning to get or build myself the throttle body sync tool.

 

 

Than you all!!

The stock air filters are $18 and I clean them too!

The OEM rubber valve cover gasket is meant to be reusable and I've done so at least 4 times with not leaks or even misting.

Knock on plastic...

Get a manual cam chain tensioner and replace the OEM POS while you adjust the valves; you have to remove it anyway.

Balance the throttle bodies at the same time too.