Squeaky sputter and rich plug?

[MattWadz]

Ok, my suzuki gp100 has been running strangely this morning. i started it and it was running and then cutting and restarting really quickly and then running fine and when i revved it, it just bogged and cut and then when i kick it to start it starts but backfires a squeak noise, its not seized, but the plug is very very black, anyone got any idea of whats going on?

Thanks for your time

Matt


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Pitbike x2, Mini Moto x4, China Quad, 02' Suzuki AP50 > 03' MBK Nitro > 86' Suzuki GP100 > 02' Yamaha Jog R > 57' Honda Lead 100 > 95' Piaggio ZIP Rst 50 > 51' Suzuki TS50x > 83' Honda CB125TDE Twin > 51' Yamaha Aerox > 98' Kawasaki KX60 > 89' Yamaha DT50MX > 80's Honda QR50 > 05' CG clone > 125cc China Pitbike > 91' Honda MTX125 RW-L > 09' Peugeot Speedfight 2 LC LR > Lucky MX 140cc > Apache Tomahawk 50 Quad (current = 2010 Yamaha WR125R

[P.]

Whats your compression like? Take plug out and put finger over the hole, kick the bike over.

[cb1rocket]

are you running pre-mix or using the autolube tank? Black is very rich, more history on the bike is better for us to diagnose. ie the bike has been like this x amount of time, it has done this since I got it, I have buggered around with the carb etc. Give us more information!

[MattWadz]

Im using the auto lube tank, this problem just randomly started happening, and the compression is good, it just randomly started happening this morning, any ideas? its just completely random that this has started happening.
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Pitbike x2, Mini Moto x4, China Quad, 02' Suzuki AP50 > 03' MBK Nitro > 86' Suzuki GP100 > 02' Yamaha Jog R > 57' Honda Lead 100 > 95' Piaggio ZIP Rst 50 > 51' Suzuki TS50x > 83' Honda CB125TDE Twin > 51' Yamaha Aerox > 98' Kawasaki KX60 > 89' Yamaha DT50MX > 80's Honda QR50 > 05' CG clone > 125cc China Pitbike > 91' Honda MTX125 RW-L > 09' Peugeot Speedfight 2 LC LR > Lucky MX 140cc > Apache Tomahawk 50 Quad (current = 2010 Yamaha WR125R

[N cee thirty]

give ya air filter a clean and a new plug
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'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[The Artist]

Sounds like blocked idle jet

[MattWadz]

Okay thanks guys, ill do that and let you know in the morning.

Matt



____________________
Pitbike x2, Mini Moto x4, China Quad, 02' Suzuki AP50 > 03' MBK Nitro > 86' Suzuki GP100 > 02' Yamaha Jog R > 57' Honda Lead 100 > 95' Piaggio ZIP Rst 50 > 51' Suzuki TS50x > 83' Honda CB125TDE Twin > 51' Yamaha Aerox > 98' Kawasaki KX60 > 89' Yamaha DT50MX > 80's Honda QR50 > 05' CG clone > 125cc China Pitbike > 91' Honda MTX125 RW-L > 09' Peugeot Speedfight 2 LC LR > Lucky MX 140cc > Apache Tomahawk 50 Quad (current = 2010 Yamaha WR125R

[cb1rocket]

possible water in the tank?

[MattWadz]

Good call, there may well be water in the tank, the plug is getting very black and oily though. i took my air filter box off, took the element out and it was very brittle, it just broke away in my hands, could this have been a problem?
____________________
Pitbike x2, Mini Moto x4, China Quad, 02' Suzuki AP50 > 03' MBK Nitro > 86' Suzuki GP100 > 02' Yamaha Jog R > 57' Honda Lead 100 > 95' Piaggio ZIP Rst 50 > 51' Suzuki TS50x > 83' Honda CB125TDE Twin > 51' Yamaha Aerox > 98' Kawasaki KX60 > 89' Yamaha DT50MX > 80's Honda QR50 > 05' CG clone > 125cc China Pitbike > 91' Honda MTX125 RW-L > 09' Peugeot Speedfight 2 LC LR > Lucky MX 140cc > Apache Tomahawk 50 Quad (current = 2010 Yamaha WR125R

[cb1rocket]

if thats happen its probably got bits of air filter rammed in the intake pipe. Needs a good service in my books!

[MattWadz]

no filter rammed in the inlet, cleaned carb, put new filter on, plug is still getting black, could the problem be a dodgy plug?
____________________
Pitbike x2, Mini Moto x4, China Quad, 02' Suzuki AP50 > 03' MBK Nitro > 86' Suzuki GP100 > 02' Yamaha Jog R > 57' Honda Lead 100 > 95' Piaggio ZIP Rst 50 > 51' Suzuki TS50x > 83' Honda CB125TDE Twin > 51' Yamaha Aerox > 98' Kawasaki KX60 > 89' Yamaha DT50MX > 80's Honda QR50 > 05' CG clone > 125cc China Pitbike > 91' Honda MTX125 RW-L > 09' Peugeot Speedfight 2 LC LR > Lucky MX 140cc > Apache Tomahawk 50 Quad (current = 2010 Yamaha WR125R

[cb1rocket]

what plug is it? Worth a new plug, as they are generally considered a common replaced part on any 2 stroker

Should be a NGK B8HS from memory

[MattWadz]

Yeah thats the plug i need, its running a B5HS plug at the moment i will put a new plug in, drain the tank and clear the engine and lines of fuel, then put new fuel in see what happens. will let you guys know, thanks for being so helpful, keep an eye on this thread if you can

Thanks

Matt


____________________
Pitbike x2, Mini Moto x4, China Quad, 02' Suzuki AP50 > 03' MBK Nitro > 86' Suzuki GP100 > 02' Yamaha Jog R > 57' Honda Lead 100 > 95' Piaggio ZIP Rst 50 > 51' Suzuki TS50x > 83' Honda CB125TDE Twin > 51' Yamaha Aerox > 98' Kawasaki KX60 > 89' Yamaha DT50MX > 80's Honda QR50 > 05' CG clone > 125cc China Pitbike > 91' Honda MTX125 RW-L > 09' Peugeot Speedfight 2 LC LR > Lucky MX 140cc > Apache Tomahawk 50 Quad (current = 2010 Yamaha WR125R

[cb1rocket]

[cb1rocket]

well what i wrote seems to contradicts what the link i put in says.

As its black and oily it seems you have a cold plug!? As far as I know if the numbers go up its a colder plug, and hotter if the number goes down

ie a B8HS is a colder plug than the B5HS plug.

I stand to be shot down but I'm pretty certain thats right.

edit: it may be a faulty oiling system, ie the pump is setup wrongly and over oiling. Or the plug itself is naff. Because the B5HS is a very hot plug, you will blow a hole in the piston at some point! which is nasty!

[The Artist]

https://www.lancerregister.com/attachment.php?attachmentid=60299&stc=1&d=1143497581

BH8S is colder than BH5S

In this situation it will make almost no difference. Get the right one if you can but no biggy.

[cb1rocket]

[MattWadz]

Thanks to all of the people who helped me with this problem, i put a new plug, new fuel and a new airfilter in and its running better than ever, thanks alot guys.

Matt




____________________
Pitbike x2, Mini Moto x4, China Quad, 02' Suzuki AP50 > 03' MBK Nitro > 86' Suzuki GP100 > 02' Yamaha Jog R > 57' Honda Lead 100 > 95' Piaggio ZIP Rst 50 > 51' Suzuki TS50x > 83' Honda CB125TDE Twin > 51' Yamaha Aerox > 98' Kawasaki KX60 > 89' Yamaha DT50MX > 80's Honda QR50 > 05' CG clone > 125cc China Pitbike > 91' Honda MTX125 RW-L > 09' Peugeot Speedfight 2 LC LR > Lucky MX 140cc > Apache Tomahawk 50 Quad (current = 2010 Yamaha WR125R

[cb1rocket]

what plug did you go for?

[MattWadz]

i ended up getting two B8HS, they are apparently the same as the B5HS but they have a resistor in or something, running better than ever though.
____________________
Pitbike x2, Mini Moto x4, China Quad, 02' Suzuki AP50 > 03' MBK Nitro > 86' Suzuki GP100 > 02' Yamaha Jog R > 57' Honda Lead 100 > 95' Piaggio ZIP Rst 50 > 51' Suzuki TS50x > 83' Honda CB125TDE Twin > 51' Yamaha Aerox > 98' Kawasaki KX60 > 89' Yamaha DT50MX > 80's Honda QR50 > 05' CG clone > 125cc China Pitbike > 91' Honda MTX125 RW-L > 09' Peugeot Speedfight 2 LC LR > Lucky MX 140cc > Apache Tomahawk 50 Quad (current = 2010 Yamaha WR125R

[cb1rocket]

the B5HS which is hotter will have a longer insulator nose than the B8HS, they will look physically the same but great you got the right one and all is fine. Resistor NGK spark plugs have the letter R stamped on em.

[MattWadz]

yeah these have R stamped on em, so the B8HS is the better plug? thats what is recommended by suzuki

Thanks
____________________
Pitbike x2, Mini Moto x4, China Quad, 02' Suzuki AP50 > 03' MBK Nitro > 86' Suzuki GP100 > 02' Yamaha Jog R > 57' Honda Lead 100 > 95' Piaggio ZIP Rst 50 > 51' Suzuki TS50x > 83' Honda CB125TDE Twin > 51' Yamaha Aerox > 98' Kawasaki KX60 > 89' Yamaha DT50MX > 80's Honda QR50 > 05' CG clone > 125cc China Pitbike > 91' Honda MTX125 RW-L > 09' Peugeot Speedfight 2 LC LR > Lucky MX 140cc > Apache Tomahawk 50 Quad (current = 2010 Yamaha WR125R

[cb1rocket]

well its the standard plug on my GP100, and so says the book as well. Is that what was written in the suzuki owner's manual, you got?

My B8HS plug has been running fine for a good half a year of continuous use now.

edit: i'm confused are you saying suzuki recommend the B5HS plug or the B8HS?

[MattWadz]

Suzuki Recommend B8HS plugs.
____________________
Pitbike x2, Mini Moto x4, China Quad, 02' Suzuki AP50 > 03' MBK Nitro > 86' Suzuki GP100 > 02' Yamaha Jog R > 57' Honda Lead 100 > 95' Piaggio ZIP Rst 50 > 51' Suzuki TS50x > 83' Honda CB125TDE Twin > 51' Yamaha Aerox > 98' Kawasaki KX60 > 89' Yamaha DT50MX > 80's Honda QR50 > 05' CG clone > 125cc China Pitbike > 91' Honda MTX125 RW-L > 09' Peugeot Speedfight 2 LC LR > Lucky MX 140cc > Apache Tomahawk 50 Quad (current = 2010 Yamaha WR125R

[N cee thirty]

who cares ? :L

its work don't it
____________________
'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once