Superdream playing up

[Ant132]

Havent been on the bike very long but im certain something isnt right with it. First of all, the popping, its pops at anytime when the revs are reducing, on the overun etc. and often at idle.

I've tried to make a video that shows it but im not sure how the sound quality will turn out.

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It also seems to rev quite slowly, if you know what i mean, on the road it feels fine though tbh but struggles at higher revs/speed. Sorry for the poor vid quality but maybe you will also be able to notice that the tacho needle never remains constant, always filckering a few mm either side of itself.

Thanks for any help, Ant.

Edit: also worth mentioning, the bike has been serviced about a month ago and the bike has been like this for ages, even after the service. Was stood for a few months before i took hold of it, full carb clean and tank has been lined since. New air cut off valves in carbs also.

[Guest]

Havent been on the bike very long but im certain something isnt right with it. First of all, the popping, its pops at anytime when the revs are reducing, on the overun etc. and often at idle.

popping is down to a lack of pressure in the exhaust, which is why you sometimes get it, when you reduce the throttle sharply, or drop of revs..especially with aftermarket cans..I've tried to make a video that shows it but im not sure how the sound quality will turn out.

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It also seems to rev quite slowlyyou could try adjusting the tickover slighty to make it tick over smoothly, but not too much, if you know what i mean, on the road it feels fine though tbh but struggles at higher revs/speedthis again could be down to a lack of back pressure from the exhaust... Sorry for the poor vid quality but maybe you will also be able to notice that the tacho needle never remains constant, always filckering a few mm either side of itself.

the tacho can be sorted with a new cable, the ends are probably rounded, which gives a loose fit

Thanks for any help, Ant.

it doesn't sound too bad for me, and you have to remember it is an old bike now, they drop off performance with age.. (don't we all)

Edit: also worth mentioning, the bike has been serviced about a month ago and the bike has been like this for ages, even after the service. Was stood for a few months before i took hold of it, full carb clean and tank has been lined since. New air cut off valves in carbs also.

did you change the plugs at the service?

[Ant132]

Thanks WF!

Appreciate that mate. Also one thing i didnt mention was the fact is consuming oil rather quickly - so i am thinking of stripping down the top and just having a look over it. New gaskets and valve seals etc. I would like to know if its worn rings that are the problem to so will do a compression check and see what it says.

[rosszx9r]

I would like to know if its worn rings that are the problem to so will do a compression check and see what it says.

 

if it's using oil and lost top end power it is almost certainly going to need a rebore.

[cyberwolf]

if it dose need a rebore its going to cost about £280 thats what i was told about 11 years ago when i had Superdream but i never had it done as i had a gpz waiting for me to pass my test