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Latest discussions at Pit Bike Club: - malaguti grizzly
hi guys
first post on the forum
ive just restored a malaguti grizzly mx for my grandson.the purple framed model with... - Nepal Treks & Tours Pvt. Ltd
Welcome Nepal Travel Tour Company always welcome to any Travel Agency, Tour agencies,... - super bike
I am going to buy new super bike can you please help...
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27-11-2012, 09:40 PM
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#1
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Novice
Join Date: Nov 2012
Age: 34
Posts: 8
Bike: pisterpro
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125cc pit bike wont start has spark compression and fuel
hey guys i bought a bike that didnt start from the begiining the bike has sparks, compression , and fuel i also checked timing it was on tdc and cam position at 9 oclock. the bikes flywheel has been swapped with an inner rotor kit from ebay. it has a strong spark blue aswell. i dont know whats wrong please help. the way i did tdc was that i shined a flash light down the spark plug tube and looked at the piston coming back up i put it on tdc and checked cam timing and it as at the 9 oclock position aswell please help. ive been trying to get it started for almost 3 days now no luck.
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28-11-2012, 11:58 AM
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#2
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On Stabilizers
Join Date: Nov 2012
Location: cardiff
Posts: 28
Bike: 110 stomp
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Re: 125cc pit bike wont start has spark compression and fuel
maybey your jets are bloked in the carb or your valves might need cleaning tacke the head off make sure the valves are in a closed get some petrol tip some into the little circle were the 2 valves are and if it comes out the bottom of the head were the came is your valves arnt closing properly and need re grinding (cleaning)
this is the best i could xplain it im new to this pitbike club hope this helps you good luck
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29-11-2012, 01:43 AM
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#3
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Novice
Join Date: Nov 2012
Age: 34
Posts: 8
Bike: pisterpro
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Re: 125cc pit bike wont start has spark compression and fuel
thank you for your response i just cleaned the carburetor and i did do a compression test and it pushes my finger out of the hole. the bike has spark kill switch isnt turned on either and its getting fuel because even when i spray starting fluid down the sparkplug hole it still doesnt try to fire up i checked timing anyone else out their please help
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29-11-2012, 11:37 AM
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#4
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On Stabilizers
Join Date: Nov 2012
Location: cardiff
Posts: 28
Bike: 110 stomp
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Re: 125cc pit bike wont start has spark compression and fuel
Quote:
Originally Posted by 2fast4u2
thank you for your response i just cleaned the carburetor and i did do a compression test and it pushes my finger out of the hole. the bike has spark kill switch isnt turned on either and its getting fuel because even when i spray starting fluid down the sparkplug hole it still doesnt try to fire up i checked timing anyone else out their please help
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try the valves i hade the same problem and it had loads of compreson put it woundnt start it would only start if i bumped it down a abig hill so i cleaned my valves and it started first kick
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29-11-2012, 03:48 PM
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#5
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Novice
Join Date: Nov 2012
Age: 34
Posts: 8
Bike: pisterpro
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Re: 125cc pit bike wont start has spark compression and fuel
Is their any other way in order to clean my valves I will need to take off the head correct. Also I made sure Jill switch wasn'tOn and it wasn't. Do I need to remove the valves to clean them. Also all the starter fluid when I sprayed it down the spark plug tube when I removed the exhaust on the bike it was all wet in their like it had startin fluid and I smelt it and I was starting fluid.
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29-11-2012, 05:03 PM
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#6
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On Stabilizers
Join Date: Nov 2012
Location: cardiff
Posts: 28
Bike: 110 stomp
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Re: 125cc pit bike wont start has spark compression and fuel
Quote:
Originally Posted by 2fast4u2
Is their any other way in order to clean my valves I will need to take off the head correct. Also I made sure Jill switch wasn'tOn and it wasn't. Do I need to remove the valves to clean them. Also all the starter fluid when I sprayed it down the spark plug tube when I removed the exhaust on the bike it was all wet in their like it had startin fluid and I smelt it and I was starting fluid.
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yess you have to take the head off and take the valves out youll need a sping compressor look on youtube on how to take them out then youll need to get some grinding past and a grinding stick look on youtube thell tell how to do it
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29-11-2012, 07:15 PM
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#7
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Wheelie King
Join Date: Mar 2011
Location: norfolk/suffolk
Posts: 2,145
Bike: CRF150R SM
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Re: 125cc pit bike wont start has spark compression and fuel
honestly!!?? why ever would you want to strip the head and grind the valves? start by taking the (nearly always) problematic IRK off and replcae it with a standard 140 stator and flywheel, check your valve clearances correctly, there are plenty of vids on you tube to do this, check all the usual things, wiring harness connections etc etc etc and set up your carb properly then let us know the results
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29-11-2012, 07:22 PM
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#8
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Burning Rubber
Join Date: Aug 2012
Location: brighton
Posts: 277
Bike: Demon x 140
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Re: 125cc pit bike wont start has spark compression and fuel
it sounds like it is the valves or the carb needs cleaning
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29-11-2012, 08:47 PM
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#9
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On Stabilizers
Join Date: Nov 2012
Location: cardiff
Posts: 28
Bike: 110 stomp
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Re: 125cc pit bike wont start has spark compression and fuel
Quote:
Originally Posted by tandy
honestly!!?? why ever would you want to strip the head and grind the valves? start by taking the (nearly always) problematic IRK off and replcae it with a standard 140 stator and flywheel, check your valve clearances correctly, there are plenty of vids on you tube to do this, check all the usual things, wiring harness connections etc etc etc and set up your carb properly then let us know the results
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he said it sparks fine so its nothing electrical the valves maybee need adjusting but id just take the hed of and cheak anyway its easy to find it if the need cleaning just tip a bit of petrol were the to valves are if it poors back out the bottem of the head that means the valves arnt closing and need cleaning i had the same problem and i tryed everything then someone told me try try clean the valves so i did and it strated first kick and ran like a wet dream
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02-12-2012, 09:42 AM
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#10
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PBC Legend
Join Date: Feb 2012
Location: Telford, Shropshire
Age: 34
Posts: 8,866
Bike: CR250 & KLX195
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Re: 125cc pit bike wont start has spark compression and fuel
Quote:
Originally Posted by XdanthemanX
he said it sparks fine so its nothing electrical the valves maybee need adjusting but id just take the hed of and cheak anyway its easy to find it if the need cleaning just tip a bit of petrol were the to valves are if it poors back out the bottem of the head that means the valves arnt closing and need cleaning i had the same problem and i tryed everything then someone told me try try clean the valves so i did and it strated first kick and ran like a wet dream
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just because it sparks outside the engine doesnt mean itll spark when its bolted in. those IRKs are a royal pain in the DICK! stick a proper stator & flywheel on it n see how you go.
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