Engine problem at high speed

[lol omg wtf]

I tried sending this to Suzuki but the website kept failing to send it so I will post it here and try again tomorrow.


Hello I'm looking for some technical advice regarding an issue with my sv650s 04', the issue is as follows:

Under harsh acceleration when the bike reaches roughly 80mph the bike suddenly stops accelerating (like been kicked back). In this situation the red engine warning light comes on. Then when the bike is brought down to 20mph> the engine will cut out.

Under gradual acceleration the bike will easily achieve a speed of 100mph+ with no issue of cutting out and seems to run completely fine when returned to lower speeds.

These symptoms can be achieved without fail every time the bike is accelerating harshly.

I have checked the air-filter, changed the spark plugs, swapped the ECU and battery, also checked all air lines and fuel lines for kinks.

I hope that you can point me in the right direction of what may cause these symptoms.

many thanks Stephen
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One life, Live it to the max!

[whitedevil]

First i'd check you have enough oil in the bike, then i'd check the pressure but you'll need to get a gauge for this. Its not uncommon for the oil light to briefly come on under hard acceleration but it shouldn't cause you bike to cut out unless there is another problem.
When was the oil last changed?

Next time it happens open the fuel cap and listen for a whoosh noise. You might have a blocked vent or hose.
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GPZ500 sold ~ CBR600FS-2 sold ~ ZX6R sold ~ Street Triple R

[lol omg wtf]

The oil was changed 1k ago, I understand what you are saying about the fuel tank so will give that a go. just about to swap the fuel tank over as i have another sv650 but a year newer so hopefully it will be interchangeable - doing that so i can find out if there is a problem with fuel pump or filter.
____________________
One life, Live it to the max!