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anyone have engine knock when stopping suddenly?

Posted: Thu Nov 01, 2012 1:02 am
by Spleege
just curious is anyone has experienced a knocking sound when stopping suddenly. this just started happening. no loss of power just this weird issue when stopping rapidly.

Re: anyone have engine knock when stopping suddenly?

Posted: Thu Nov 01, 2012 1:43 am
by you you
Spleege wrote:just curious is anyone has experienced a knocking sound when stopping suddenly. this just started happening. no loss of power just this weird issue when stopping rapidly.
Its definitely the engine not the head bearings?

Re: anyone have engine knock when stopping suddenly?

Posted: Thu Nov 01, 2012 4:40 am
by Spleege
I think actually its the variator. I have been watching a lot of videos for the jcosta upgrades and you can hear the exact same noise at low rpm's. then i was reading that the variators, (stock ones) make clanking noises commonly. I feel much better. makes sense too because the weights are meant to slide inside the variator housing and judging from the videos there is no damping. I don't know man but I'm not digging the variator concept. I liked the auto clutch i had on my honda wave 110 and chain drive. jury's still out on the pcx for me.

Re: anyone have engine knock when stopping suddenly?

Posted: Thu Nov 01, 2012 4:46 am
by Spleege
I'm wondering too if pcx's in other countries have all the evap crap on them. Here in Dipshitville, California the pcx is loaded with all sorts of smog crap. I was blown away when i pulled all the plastic off to do the valves and spied all the hoses and canisters. I mean how much "smog" is a 150cc four stroke motor going to put out?

Re: anyone have engine knock when stopping suddenly?

Posted: Thu Nov 01, 2012 4:53 am
by Taz
My variator makes a knocking sound if Im braking (gently) and cornering at the same time, seems normal..

Re: anyone have engine knock when stopping suddenly?

Posted: Thu Nov 01, 2012 9:58 am
by maddiedog
I've never heard mine knock before.

CVTs are good technology, they're not as efficient as gears, but are quite convenient. I wish a manual gearbox was offered for the PCX though, I would have bought that in a heartbeat.

Re: anyone have engine knock when stopping suddenly?

Posted: Thu Nov 01, 2012 7:30 pm
by gn2
Not many new manual scooters around, just the Vespa PX and the LML Star.

Re: anyone have engine knock when stopping suddenly?

Posted: Fri Nov 02, 2012 10:06 am
by maddiedog
Vespa doesn't sell the PX here anymore, sadly.

I like the looks of the S150 ie, but the economy is miserable compared to Hondas of the same CC... I'd want an Orange one. Gorgeous.

Re: anyone have engine knock when stopping suddenly?

Posted: Fri Nov 02, 2012 12:38 pm
by gn2
The new 3v engines in the S and LX are significantly better on fuel than the previous ones and will easily return 100 mpg (Imperial) in real world use. :geek:
I like the orange too (taormina)
Vespa S porn pic
mmmm, sexy!

Re: anyone have engine knock when stopping suddenly?

Posted: Fri Nov 02, 2012 2:12 pm
by maddiedog
I think I just splooged my pants a little. That's a gorgeous piece of machinery. I wish they were manual...

Re: anyone have engine knock when stopping suddenly?

Posted: Fri Nov 02, 2012 7:00 pm
by you you
maddiedog wrote:I think I just splooged my pants a little. That's a gorgeous piece of machinery. I wish they were manual...
Aaah. Artexing your underpants? Nowt wrong with that

Re: anyone have engine knock when stopping suddenly?

Posted: Tue Nov 13, 2012 2:26 pm
by ericpcx
I heard mine knock today after stopping suddenly,was worried but now that i hear it's the variator I feel a lot better