[Technical] Queries for TA150

[K.Sim]

jux got my bike back from spc yishun..... rc valve serviced, changed 2nd hand block and piston. coolant carby 2t pump air filter all serviced. clutch throttle and speedo cables changed. prev owner nvr bothered to even change spark plug man.

 

finally can feel the 2 stroke power surge easily.

 

great idea on the stp fuel treatment. i'll get it asap. is it the STP Gas treatment? i noe there's a few types....what about the FP60 i read somewhere in this forum?

[mepkoh]

i use fuel system cleaner..not gas treatment. STP should look for something like fuel injectors/fuel system cleaner or something like that. these cleaners are packed with soapy stuff ..claim to clean system.Personally i use thess on my bikes and car..after30k to 40k km ride. i can feel the vehicles accelerate better..

[ahcaibiker]

appealing for help regarding how many gears does a TA150 transmission has. any current or ex-owners of TA150? does it has 5 or 6 gears? im beginning to fear for the worst for my gear box... i have no problem shifting my gears and getting into neutral. im very sure i can only kick up to gear 5 max, 4 kicks after being on gear one. the problem is after i hit around 80kmh my engine rev is rather high and noisy. is this normal for a TA150? im thinking my gear 6 might rosak liao.... the fastest i whack before was abt 130kmh with throttle to spare but engine like want to explode liao... how much roughly issit to overhaul my gearbox if my 6th gear really up lorry? pls help and many thanks.

[alxlxla]

Heyho,

 

Great to see our PK Ta150 still around. Haven't been back here since a long time! I am riding Ta150 since 2001 and still with this great bike! although now i drive most of the time fetching my wife around, nevertheless still love my TA150! (renewing COE soon)

 

nivLek1985 ! i think I bought something from you before but forgotten what many years back. don't think you can remember me, btw how are you? still riding??

[caydias]

hi all,

 

any of you expericed that ur bike just drop dead after rideing for a short while... it sort of similiar to no petrol.. but after pushing it to a petrol station to pump, verified that there's still petrol in it... what could be the problem as i cant even start with i full tank in my bike... spark plug?? but never rain at all today...

[mepkoh]

more infor required??/ what is the actual circumstances???

is it stalling a traffic lights...can restart when the bike cools down?

Spark plug do fail( occasionally but seldom fail suddenly most times the power of the bike deteriorates real fast ,only heard of one guy with a "explodded" one before)...and most times they are fouled up..esp for 2 stroker like the ta 150.Check your spark plug condition ie colour of the electrdoes ..are they black, brown or whitish. this colour indicates the condition of your ignition /power stroke of the engine.

[caydias]

not stalling at the traffice lights.. it's while traveling there is a total lost of power... slowing down to a total stop just like how it will be when there is no petrol.. no explosion sounds or watever... bike cant restart even after a long period of time...

[mepkoh]

it look like a component/system failure.

in cases like this ..we have to go down to basics.ie 3 thing s need to be met for starting a bike....

1..sparking?? check for spark...remove spark plug..then fixed it to the plug cap.

place the negative electrode(the bent one) on to the engine or anywhere on the chasis.

choose a good location on the bike and restrat bike as usual..wacth for spark..if everthing is okay u should see a steady blue spark..if there is no spark then obviously the problem likes with the sparking system and u can start from here to figure out what is wrong..namely spark plug, high tension cable, coil, cdi, rectiier/alternator..etd,

 

2. Fuel?? is it good? is it getting to the carb?? to confirm this..at the carb there is a drain screw right at the bottom of it...remove it and check the petrol by visual /smelling it..sometimes there may be water and other scum in it( bad petrol)..if no petrol come out..means float may be a problem or some obstruction along the delivery system. and u verify whether it is the carb problem or tube or pertolcock problem or even rusty tank.

 

3. compression?? is your bike running with good power lately?? how old is your bike?? gone for a piston change before..??

compression failure could be a result o the following..

valve leaking?? done any top overhaul lately?

piston/rings failure.

 

compression test.. remove spark plug.

place a clen cloth over the opening and press hard with thumb over it..sealing the hole.

next start engine...your thumb would be push away by the pressure created oin the cylinder but if u still can hold it down means compression needs to be fixed..

 

if all3 thing s okay engin..e should be a ble to start..

the above is aprelimary check ..and would give u an idea whether this is a electrical or mechanical or a fuel/mix fialure..u can then work from there ,

good luck

[caydias]

it look like a component/system failure.

in cases like this ..we have to go down to basics.ie 3 thing s need to be met for starting a bike....

1..sparking?? check for spark...remove spark plug..then fixed it to the plug cap.

place the negative electrode(the bent one) on to the engine or anywhere on the chasis.

choose a good location on the bike and restrat bike as usual..wacth for spark..if everthing is okay u should see a steady blue spark..if there is no spark then obviously the problem likes with the sparking system and u can start from here to figure out what is wrong..namely spark plug, high tension cable, coil, cdi, rectiier/alternator..etd,

 

2. Fuel?? is it good? is it getting to the carb?? to confirm this..at the carb there is a drain screw right at the bottom of it...remove it and check the petrol by visual /smelling it..sometimes there may be water and other scum in it( bad petrol)..if no petrol come out..means float may be a problem or some obstruction along the delivery system. and u verify whether it is the carb problem or tube or pertolcock problem or even rusty tank.

 

3. compression?? is your bike running with good power lately?? how old is your bike?? gone for a piston change before..??

compression failure could be a result o the following..

valve leaking?? done any top overhaul lately?

piston/rings failure.

 

compression test.. remove spark plug.

place a clen cloth over the opening and press hard with thumb over it..sealing the hole.

next start engine...your thumb would be push away by the pressure created oin the cylinder but if u still can hold it down means compression needs to be fixed..

 

if all3 thing s okay engin..e should be a ble to start..

the above is aprelimary check ..and would give u an idea whether this is a electrical or mechanical or a fuel/mix fialure..u can then work from there ,

good luck

 

hey mepkoh,

thanks for these infos.. managed to rectify the problem... it turns out to be spark plug problem.. the previous owner never change it during his so called 'full servicing'... had quite a hard time searching for parts during this long weekend... impressed with the knowledge you have for phantom... hope to join the next clinic session if possible, can learn more abt my phantom

[mepkoh]

i have a 15 year old ...she has its temper and pesonality..

for that i have to bear all her quirkiness ..eg she is a drinker..no choice but to treat that illness with the utmost care..if not she will not move..hahahaa

the tools i keep in the box...hahahaaa..sometimes she needs to be hammered and screwed to wake her up...u should see the things the do to her to perform..

well in any case...she is my baby..i take good care o her..so that she performs good everytime at anytime.

 

so take good care of your ride..and in turn she will give u a good ride.

Edited August 12, 2009 by mepkoh

[caydias]

haha.. mine just pasted her 10 years birthday.. give her condition and age.. think those owners before mi took care of her quite well... guess i got much to learn from you to maintain her at gd operating condition..

[mepkoh]

sign up at the clinic for a diy session on a chain oiler..thats the messy/expensive chore u have to do on a regular basis to the chain...i am sure u will apprecaite this thingy after u have tried oily it manually. For me it is goodbye greasy hands and all the bending and bike pushing to get it done properly..my back can take a rest from it..hahah

i dont have to tell u the danger of a badly maintain chain??

take care man..maybe my mantra should ..take care of you ride and the rdie will take care of u.

[ahcaibiker]

Hey guys, my TA150's engine having some knocking noise lately, only happens when it's idling on neutral gear with clutch engaged. i.e whenever i clutch in the knocking sound dissappear. other than this sound problem, the engine has no other problems at all.

 

Engine overhauled b4 abt a year ago under previous owner.. Some bugger stole the 2T reservoir cap and rainwater went in, was unaware and ride till shiok chiok then caused piston jam...

 

Is the knocking sound normal or something is wrong and needs to be rectified?

[Hydher]

it obviously isnt normal mate.

[ahcaibiker]

it obviously isnt normal mate.

 

If it's not normal, can someone help by trying to pin point where the problem lies? engine problem or clutch plate problem? cos it only have the knocking sound when im on neutral with clutch engaged (clutch lever not pulled in). when i open throttle and ride as per normal, no knocking sound too. engine power and torque all there.

[hamsterwhale]

it should be ur clutch assy, as in the clutch spring, if not it might be the gear train acting up....my best diagnosis is to do this, ride as per normal, then u upshift and accelerate all in one swift movement, if the gear goes back to the one before u upshift, chances are gear fork not holding onto the gear train properly....

 

i think if u can let us hear then its easy to pin point the exact location, and what is that area.....

[ahcaibiker]

went to consult chong, told me it's not a major issue. went down to planet this morning and change sprocket and chain, rear wheel bearing and service my carb (wash, replaced a needle like thing (told by Chong, it controls the amount of petrol), and the rubber seal.) now bike feels much better. smoother power flow and acceleration.

[mepkoh]

went to consult chong, told me it's not a major issue. went down to planet this morning and change sprocket and chain, rear wheel bearing and service my carb (wash, replaced a needle like thing (told by Chong, it controls the amount of petrol), and the rubber seal.) now bike feels much better. smoother power flow and acceleration.

 

what is the colour of your exhaust gasese?? is it black or white or no colour or s hades ofblack/white..?? or that smoke only seen at high rpm??

[ahcaibiker]

what is the colour of your exhaust gasese?? is it black or white or no colour or s hades ofblack/white..?? or that smoke only seen at high rpm??

 

when engine is cold, there will be white smoke, if i rev hard (when engine is still cold), more white smoke. when engine warmed up, colourless smoke but if i whack throttle, 2T valve opened big, got white smoke. my amount of white smoke is minimal compared to most 2 strokers out there. e.g: rxz, krr and sp.

[mepkoh]

as expected...if your exhaustb leaks 2t....you will be throwing money away..

 

if your bike is smoking white smoke constantly at whatever speed...it could mean one thing...the coolant is somehow gets into the exhaust...and that means trouble..

Edited September 2, 2009 by mepkoh

[ahcaibiker]

as expected...if your exhaustb leaks 2t....you will be throwing money away..

 

if your bike is smoking white smoke constantly at whatever speed...it could mean one thing...the coolant is somehow gets into the exhaust...and that means trouble..

 

there is no leakage at all at the the exit of my end can. i still hold on to my opinion that it is normal for 2 strokers to emit some white smoke due to 2T. i will worry instead if there is no white smoke from my exhaust whenever i rev my engine hard. i'll check my 2T reservoir once every 2 weeks to make sure a healthy level of 2T resides in the reservoir. My 2T consumption rate is low, my last top up was more than 2 months back but as of now, reservoir still half filled.

 

btw, currently using elf 2T. any better 2T to reccommend? Im thinking of motul.

[mepkoh]

i dont ride with a fast and furious way..so whatever 2t is okay...unless u do ride fast tahts a diff story. I have no answer or that.

 

my last ride..bought 1L 2t..can last for 2000km easily.ie ratio/mix is 1:100.

those u see with their exhaust leaking, i am not surprise the ratio/mix is 1:50 ..

Edited September 2, 2009 by mepkoh

[ahcaibiker]

i dont ride with a fast and furious way..so whatever 2t is okay...unless u do ride fast tahts a diff story. I have no answer or that.

 

my last ride..bought 1L 2t..can last for 2000km easily.

 

i like to acclerate hard and fast especially from stop at traffic light junctions as i prefer a clear traffic in front of me. sometimes i do speed in excess of 100kmh when i feel like it and when i think its safe enough to do so. i have to admit my elf 2T smells kinda nice in its "unburnt" still in the container state.

 

i heard pennzoil 2T is good, but so far never seen it in bike shops. anybody using other brands of 2T before? reviews pls.

[sendoec]

Hi,

 

Need advice from fellow TA150 riders on my 2 problems.

1) Recently my engine stopped 3 times, twice while stopped at traffic junction, waiting for light change in neutral gear. Once while riding at KPE midway. My solution was turn on my reserve & kick start again. Smtimes kick start a few times immediately, engine bk. But smtimes i need 2 wait while, maybe 5-10 mins, kick start den engine can start again. Is the problem just no petrol or smthg serious??

 

2)When I stop w/o changin dwn gears, stoppin at 6th gear with clutch fully depressed, I cannot cannot dwn e gear. My solution was release e clutch slightly until a tick sound was felt & heard, den change 1 gear dwn, & keep repeating the procedure until i reach neutral. Is this normal??

 

V appreciate fellow riders opinions & advices on my problems.

[mepkoh]

Hi,

 

Need advice from fellow TA150 riders on my 2 problems.

1) Recently my engine stopped 3 times, twice while stopped at traffic junction, waiting for light change in neutral gear. Once while riding at KPE midway. My solution was turn on my reserve & kick start again. Smtimes kick start a few times immediately, engine bk. But smtimes i need 2 wait while, maybe 5-10 mins, kick start den engine can start again. Is the problem just no petrol or smthg serious??

 

2)When I stop w/o changin dwn gears, stoppin at 6th gear with clutch fully depressed, I cannot cannot dwn e gear. My solution was release e clutch slightly until a tick sound was felt & heard, den change 1 gear dwn, & keep repeating the procedure until i reach neutral. Is this normal??

 

V appreciate fellow riders opinions & advices on my problems.

 

1..you mean the bike stall while idling at traffic lights??

and it also stalls while u are on the move riding??

 

when was the last time you have tune your carb ??

when was the last EO change??how many km ago??

when was the last time you have cleaned the filter??

when was the spark plug changed..??

 

answer this questions and you have your answer there.. could be lean mix..

old bikes tends to auto to lean mix with time...this is a result of the joints getting loose, and lean mixes result in very hot engines..thus sometimes you have to cool down to get it started again..

while you are on the move did thee temp gauge lights up?? maybe it is time to flush your radiator and give it a clean coolant. there is apossibility that the engine was so hot that the engine seized... and after it cools it can be started again.

 

 

as for the gears ..when was the clutch plates changed??

could be just a simple case of clutch spring and or clutch plates...go to a mech to get opinions..or just a simple clutch cable adjustment.

 

as ta150 are old bikes...maintenance will be a major activity...yeah this is unavoidable..they need more repalcement of parts as they aged

while u are at the shop ask their opinions on 2 strokes bike cylinder head/ports for it to be decarbonised.....

Edited September 14, 2009 by mepkoh