GSX1400 Owners .org

Technically Speaking => General Technical discussion => Topic started by: Persizi on Monday, 12 July 2021, 07:03 PM

Title: Slow acceleration around 5000rpm
Post by: Persizi on Monday, 12 July 2021, 07:03 PM
A few weeks ago I've noticed something weird. When I accelerating more faster, especially on first gear there is normal acceleration till around 5000rpm then slows down for a bit and then continue accelerating fast. Sometimes it is more noticeable sometimes is less. Sometimes feels fine but it is happening for sure. I'm still afraid to give full throttle, but it seems to me that when I do it with close to full it doesn't. When I accelerate slowly it also doesn't. Since then I've changed the Spark Plugs, did throttle balance and it still the same. Is this normal?
Title: Re: Slow acceleration around 5000rpm
Post by: Mick_J on Monday, 12 July 2021, 07:25 PM
Cant say I've ever noticed but I hardly ever go above 5000 rpm.  If I  remember I will try it next time out.
Title: Re: Slow acceleration around 5000rpm
Post by: GSXKING on Monday, 12 July 2021, 07:50 PM
Fuel pump  :hat:
Title: Re: Slow acceleration around 5000rpm
Post by: Persizi on Monday, 12 July 2021, 08:07 PM
Quote from: GSXKING on Monday, 12 July  2021, 07:50 PM
Fuel pump  :hat:
It doesn't make sense because after passing about 5000-6000 rpm it starts accelerating fast again  :confused1:
It happens literally for a bit around 5000rpm.
Title: Re: Slow acceleration around 5000rpm
Post by: mlivkovich on Monday, 12 July 2021, 09:16 PM
 I had same problem, teabag filter was clogged with rust. Also didn't have sense, bike pulled ok above 5000 rpm :whatever:
Title: Re: Slow acceleration around 5000rpm
Post by: grog on Wednesday, 14 July 2021, 06:55 PM
Persizi, do external fuel filter mod, you will be impressed with difference. Heal Tech advancer and external, just a sweet bike.
Title: Re: Slow acceleration around 5000rpm
Post by: Persizi on Thursday, 15 July 2021, 02:39 AM
Is there a kits for that mod?
Title: Re: Slow acceleration around 5000rpm
Post by: VladTepes on Thursday, 15 July 2021, 10:05 AM
Not really but its straightforward

https://gsx1400owners.org/forum/index.php?topic=590.0

Title: Re: Slow acceleration around 5000rpm
Post by: GSXKING on Thursday, 15 July 2021, 05:29 PM
Check the teabag first then work up from there. Simplest solutions first  :onya:
Title: Re: Slow acceleration around 5000rpm
Post by: Persizi on Monday, 19 July 2021, 07:25 AM
I cleaned the tea bag today. There was some rust but not that much as I expected. The internal condition of the tank was in surprisingly good condition. Anyways, I'm not completely sure but I think there is no more slowing down around 5000 rpm. But I'm not sure, I didn't have much chance for good test. Also I'm not sure is the cleaning the reason because I adjusted the TP sensor the same time.
Title: Re: Slow acceleration around 5000rpm
Post by: seth on Monday, 19 July 2021, 03:48 PM
@Persizi
Sounds like checking cleaning the teabag and adjusting the tps have got you sorted .
Happy days this place normally can help folk if the folk have a little patience.
Glad your sorted .
:cheers:
Title: Re: Slow acceleration around 5000rpm
Post by: grog on Monday, 19 July 2021, 07:16 PM
Persizi, great result. Just ride it now, 5k revs is moving along rapidly.