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Have been running my scoot with NGK iridium's since the get go, they make a great difference with a smoother idle and pickup.
So, when it came to servicing the cage recently I decided to give them a go on the old girl. Holy cr*p, what a difference, you really can notice it on 4 cylinders (yeah, only 4, I'm in the U.K.). It actually feels like it's putting out more horses now!
Can only imagine what a full set would do in a V8 across the pond

Hi Rob,
good to see a fellow countryman here

Couple of things if I may, CBT lasts 2 years, not 3.
Yearly MOT only applies after the vehicle is 3 years old.

Bashan,
we pay national insurance directly out of our pay packs to fund the 'universal health care' system, as we know it the NHS (national health service) Duty/tax from fuel does not fund the NHS.
The government take about 60% in tax/duty of the price of a litre of gas here. We also pay something like £125-£300 or so each year for a 'road fund licence' depending on the size of ya cages engine.
All of these procedes are supposed to go into the road networks, but do they? bo!!ocks they do.

The pollitricksters of this country are running it into the ground.

But still, I love riding my scoot and scooterdoc is always here to help take of the pain of real life away

Hi guys,
mainly a question for carburettors, should we come across symptoms of poor running.
Things that I can think of (apart from hard to start and poor idle) are:
stuttering when revving from idle,
symptoms of a too large main jet (running rich),
symptoms of a too small main jet (running lean),
symptoms of a vac/air leak

Pulling the plug to check it's condition is a common diagnostic, but was just wondering if anyone has had any of the above problems and what it turned out to be.

My scoot runs fine, but thought it would be good to know about these things incase they happen so it could help with what to look for when fixing it.

Mike

Well I can tell you that it has made a real difference to the temperature of the CVT cover, I can hold my hand on there after a long run without having to snap it back due to heat.

Not a good picture but the only one I have to hand,



inside the red circle and crudely drawn in in green is the outlet at the rear.

And due to the fact that the only 115mm variator fan I could get that was'nt over priced is very much like this one,

cgi.ebay.co.uk/perforance-Variator-GY6-125-150-Kymco-Vento-SYM-/180658011131?pt=UK_Motorcycle_Parts&hash=item2a100e7bfb#ht_1640wt_825

I thought I had better do something to help that fan due to the smaller blades.

CVT cover has been off a number of times and it sure looks cleaner than it did before this was done, and it's had close to a 1000 miles put on it. I thought the removal of the foam filter/screen at the intake of the CVT was a common recommendation? The one on mine was certainly full of crud and impeding airflow it was so bad.

Believe me, you could not even touch the CVT cover before I did this.

Did this one a while back,
www.scooterdoc.proboards.com/index.cgi?board=150cc&action=display&thread=2596
and it's made a real difference, after a long run I can comfortably hold my hand on the CVT cover without getting burned, and it has'nt made a difference to the state of the inside. Infact, I think it also helps in blowing the crud out the back.

More recently some simple hole drilling in the panel that is in front of the engine,







also cut some material off the fan cover to open things up a bit there,



All of this is guess work, with no temp gauge installed I can't tell if things are gonna be cooler, but if the CVT intake has helped cool things down, hopefully these other mods will help the engine.

Cheers guys,

Mike

Did this to the bottom panel to hopefully pick up a bit more airflow onto the engine.

Panel and a plastic louvered vent,



hole cut in panel,



vent fitted,





panel back on scoot,





might help add a little airflow up towards the engine.