this motor has very good compression. compression isnt a prob. is there any advise on a "port" 2 stroke that i can use to try and get this thing to run?? btw thanks morris for letting me know that this motor doesnt necessarily have a reed valve.
2006-10-28 16:40:03 · 4 answers · asked by Anonymous in Cars & Transportation ➔ Motorcycles
confirm it has good spark and is getting fuel before you go any further, the port size is controlled by the power valve which only makes a diff. at higher rpms.
2006-10-28 16:53:58 · answer #1 · answered by Anonymous · 1⤊ 1⤋
i read your previous question as well you say fuel is getting to the cylinder i assume you mean the plug is wet and smells of petrol. is it fresh petrol not some old stale petrol.
all that is required for a 2 stroke to run is compression, correct fuel/air mix and a spark at the right time.
If the plugs are wet then it doesnt matter if it has a reed valve or not at least you know fuel is getting through so a reed valve is not closed.
if you have a healthy spark and the ignition timing has been confirmed as correct, you need to check that the choke or enrichening device on the carb is functioning correctly, otherwise it may not be rich enough to start from cold, (remove the airfilter and get someone to block the air inlet with a clean rag while you try to start it this will enrich the mixture temporarily so u know its the choke if it works)
the only other thing i can think of without looking at it is the oil to fuel ratio maybe too much oil is in the mix you will need a manual to explain how to check this. but unless the plug is oily i doubt it would be this , much more likely to be timing or enrichment/choke device
remember most carbs wont suck fuel through if you are opening the throttle whilst starting it as this reduces the vacuum in the carbs keep the throttle closed and the choke on till it starts (or floods, if it does flood check ignition timing with a strobelight then try again with a new plug
oh one more thing is check that no one has adjusted the air screw on your carb screwing it right in will stop it starting, refer to manual for correct setting and location but generally screwing it gently all the way in then turning it out by 1.5 turns is about right to get it running. (although it may be weak or rich at this setting its usually close enough to get it running with adjustments made later)
2006-10-30 11:18:46 · answer #2 · answered by hirebrandkg 2 · 0⤊ 0⤋
Carburetor may need rebuilding.
2006-10-29 01:43:51 · answer #3 · answered by Michael K 3 · 0⤊ 0⤋
check spark, check fuel ,check timing
if it is all right it should run
2006-10-28 19:57:50 · answer #4 · answered by Ray M 2 · 0⤊ 0⤋