Now i have tried every fuel e20 91 green 95 the lot,When on a long straight road i open the throttle when traveling at a speed it keeps pulling.As the bike is fairly new got 4000 service due,i know it must be the fuel ,the bike has been doing for a while so ,it cannot be water in the fuel flushed the system out already,any ideas thanks andy

If by "pulling" you mean that there is some surging: when you have one throttle position the revs or power of the engine varies enough that you notice it.

I have that issue now with my PCX and it's getting worse. The bike is 18 months old, purchased in March of 2010 and is coming up on 13,000km. I'll be taking it in for service next week and I'll let you know what they find.

I've read about two issues that can lead to surging with the PCX and can't remember if I read them at Motorcycle Thailand or somewhere else. The first issue that can cause surging is a worn drive belt, but at 4,000km that doesn't sound like your bike would be ready for that unless there was something grossly wrong when it came out of the factory.

My troubles started at about 9,000km with (I think) a bad tank of gasoline. I've run pretty well everything in the bike but lately have been filling up with pure 91 (no alcohol). That didn't help and neither did 95.

I'm thinking that I have dirt in the fuel or injection system somewhere. I read somewhere that the PCX has smaller holes in the injectors than some other bikes and while this makes for excellent mileage the downside is they can get clogged. I can't remember where I read that or if it is true, so take it with some salt for now.

I'm going to have the dealership check the belt and clean the fuel system. Other than that, I'm out of ideas on the surging.

See you here in about ten days with what I've learned.

QUESTION RE BRAKES: I haven't changed the brake pads or rear shoes yet. Can anyone advise how many kms those items usually last?

Thanks

QUESTION RE BRAKES: I haven't changed the brake pads or rear shoes yet. Can anyone advise how many kms those items usually last?

Thanks[/p]

MY 1 year old PCX with 22,000 km that i ride hard and brake even harder shows little or no wear to the brake pads.

I went through my first rear tire ar 20,000 km (8000 Bt for new) and would guess I have 3000 more km on the front tire

Quote by: Jeffrey

QUESTION RE BRAKES: I haven't changed the brake pads or rear shoes yet. Can anyone advise how many kms those items usually last?

Thanks

MY 1 year old PCX with 22,000 km that i ride hard and brake even harder shows little or no wear to the brake pads.

I went through my first rear tire ar 20,000 km (8000 Bt for new) and would guess I have 3000 more km on the front tire
[/p][/QUOTE]

OOPS only 800 Baht how did that extra "0" get in there

It's indeed true that Honda is using special, more and smaller holes, for the PGM-FI (fuel-injection) system. The holes in the injector are a few microns smaller than the average regular fuel-injection system, the biggest advantage is the production of smaller fuel droplets in the combustion chamber of air/fuel mixture. The much finer/smaller droplets ignite and burn much more efficient than bigger fuel-droplets.

The advantage of better combustion is of course better fuel efficiency and more performance.

The downside to smaller holes in the injection-needles is that dirt particles can block fuel flow more easily.... (Thailand, especially some of the no-name petrol stations up-country are not taking the filtering of the fuel very serious.)

I strongly recommend that people using a Honda motorcycle or scooter with PGM-FI install a good fuel filter. It will seriously help your motorcycle.

I have 15000ks on my PCX and have power surge around 40kph. The injector has been cleaned and found to have very fine sand in it but now still surging intermitently. Can anyone advice on a fuel filter as I think I still have dirt in the tank?
The rear tyre is now on the cobbles but the brakes are still good.

You need to be a bit careful with filters in the fuel-line of your fuel-injection scooter, Because the fuel-line of a fuel-injection scooter or motorcycle is under pressure you should also ONLY used fuel-filters that work with the pressure requirement (41 to 44 PSI).

Reporting on my surging problem as promised: late but I'm here!

I took the bike in last week and they replaced the drive belt. That took care of part of the surging, but I still have something happening in the background at a lower level. I'll be taking it back in next week.

To recap: I had moderate surging at 30 to 40kms/h. A drive belt change reduced the surging but didn't cure it. It is at a lower level now, so it looks like there were two issues causing the problem.

I let you know what happens after next week.

Quote by: ThaiDesign

It's indeed true that Honda is using special, more and smaller holes, for the PGM-FI (fuel-injection) system. The holes in the injector are a few microns smaller than the average regular fuel-injection system, the biggest advantage is the production of smaller fuel droplets in the combustion chamber of air/fuel mixture. The much finer/smaller droplets ignite and burn much more efficient than bigger fuel-droplets.

The advantage of better combustion is of course better fuel efficiency and more performance.

The downside to smaller holes in the injection-needles is that dirt particles can block fuel flow more easily.... (Thailand, especially some of the no-name petrol stations up-country are not taking the filtering of the fuel very serious.)

I strongly recommend that people using a Honda motorcycle or scooter with PGM-FI install a good fuel filter. It will seriously help your motorcycle.

are the Honda fuel filters not as good as you can get else where,just would like to know

Quote by: Big Guy

Reporting on my surging problem as promised: late but I'm here!

I took the bike in last week and they replaced the drive belt. That took care of part of the surging, but I still have something happening in the background at a lower level. I'll be taking it back in next week.

To recap: I had moderate surging at 30 to 40kms/h. A drive belt change reduced the surging but didn't cure it. It is at a lower level now, so it looks like there were two issues causing the problem.

I let you know what happens after next week.

thanks please let me know,mine happens over 100kph ,it must be the injectors like thai design said with mine