Un-even throttle response; bogging down etc - your thoughts?

[microwavable]

Hi all, I am new the spyder arena and I have not done any maintenance work yet but I am gathering parts for the first service in my ownership. So I have a 2018 F3s with 8,700 klm on it. I am getting some weird throttle responses.

it seems to bog down when rolling on even at 100k and top gear (3100rpm) then when I down shift and get to 4000 or more rpm it take off like a rocket. I am getting similar responses in other gears, it seems to not want to accelerate until I get to higher revs, then it takes off like what I would normally expect.

I dont have any history but based on what I have been told, I am thinking nothing was ever done before me.

thoughts?

PS my first thought is to check the air filter (which I will do first thing in the morning) then plugs?

 

[Little Blue]

Engine Torque Curve

:chat:...Seems like this is a normal deal for what you want to do.
The Engine has a lot of power when you stay in the 'Torque Curve'.
Learn about your Engine and how to stay 'in the TQ-C'.

I am sure someone will come on board with some deeper ideas and thoughts.

Stay Healthy. ....:thumbup:

 

[missouriboy]

Little Blue is on the right track. It's not exactly throttle response, but more about engine performance.

Your 1330cc engine has sluggish pickup performance below about 4500-5000 rpm. Peak acceleration performance occurs from about 5000 to 7500 rpm. Then red-line is about 8100 rpm.

The difference in that peak performance is quite noticeable. Here's how I pass slower traffic: before passing, regardless of present speed, first downshift until you hit whichever gear puts your tach to at least 5000. Then when you pull out to pass, you are getting maximum acceleration. But be prepared to upshift while passing, because that acceleration will put you up to 8K before you know it!

You have enough low-rpm torque to cruise along easily at 2500 or even less, but not enough for any appreciable acceleration. It's like being in overdrive.

 

[JayBros]

Here's the engine torque curve.

 

[newdave]

These posts are why I love lurking in forums. Makes me an "expert" before I even get my ride! Thanks guys.

 

[microwavable]

thank you all this helps a lot! I also found out that my spyder loves New Zealand 91 octane a LOT better than the higher octanes, which I found odd but good because of the prices these day and that helped a lot with the bogging thing

 

[Isopedella]

FWIW I run the 91 here in NZ. That torque curve diagram posted answers questions that were bugging me. Seems to show a lloooonnngggg flat section between 3 and 4 thou then its off like a robbers dog. Thanks for posting that. I have not checked out the plugs yet on mine.

Care to take a few photos of the job and post? Im interested as to how you get to them. Iso