strange nsr

rizzla · Renault 5 Driver Joined: 23 Mar 2004 Karma :

a mate of mine has got a problem with his nsr. Starts up and revs perfect right up to red line. as soon as it's in gear and taken up to 4-5000 rpm the rev counter goes down to 0 and back up to 5000 repeatedly and wont go past it in all gears. any ideas???

G · The Voice of Reason Joined: 02 Feb 2002 Karma :

Does the bike still actually rev fine.. just not display it?

I presume he is using the electric start?... That can be a sympton of a low/no battery, but if there's enough power to start it, then it shouldn't be a problem.

rizzla · Renault 5 Driver Joined: 23 Mar 2004 Karma :

no it doesn't rev past 4-5000 rpm display or engine and it is a electric start but brand new battery on it.

Shimmydude · Scooby Slapper Joined: 13 Apr 2004 Karma :

You could try changing the spark plug. My NSR started to do that (halfway across the main bridge in my city) then the engine completely died on me.

I would sit there in first (clutch in) then the bike revved to about 4-5000 then dropped to normal. When I tried to pull off it would die on me. Pushed it back home and fiddled with the spark plug. I noticed there was a very large gap where the spark generates so I knocked it back down to what the manual recommended and this seemed to work. It has never done it since. You could just buy a new spark plug as it's cheap though! Very Happy

Sounds kind of similar to what happens to the bike you are describing! Hope it helps you mate! Very Happy

____________________
Brick Wall

rizzla · Renault 5 Driver Joined: 23 Mar 2004 Karma :

i've already tried a new spark plug

rizzla · Renault 5 Driver Joined: 23 Mar 2004 Karma :

the bike has just got worse now when you drop it into first it stalls. And it wont turn over in first only neutral

Shimmydude · Scooby Slapper Joined: 13 Apr 2004 Karma :

That doesnâ€™t sound too good dude! Sad

Maybe you could take it to a garage and just ask their opinion, see what they say. Just ask their opinion before you get them to service it as this will cost a bomb! If they think it is really serious then get them to have a more thorough inspection.
____________________
Brick Wall

rizzla · Renault 5 Driver Joined: 23 Mar 2004 Karma :

cant get to a garage easily. dose any one know what happens when the crank seal goes apart from loosing oil.