back2theborstal
Member
- Local time
- 10:39 PM
- Joined
- Jan 19, 2011
- Messages
- 57
hello all. i have an sd stinger engine kit 66 (80)cc. i got it about a month ago now, but i have only road the bike for about 15-18 miles. my question is am i running it too hard since it is still in the very early break in. i am very often going wide open throttle with it, yet i do not leave it wide open for more than 10-15 seconds. and usually not that long. i varry my speeds alot and throttle positions alot. and dont run the engine for more than about 30 minutes at a time. but i feel like i might be running it too hard. i have read where you should not go wide open throttle for quite awhile. and you should gradually work up to it over 100 miles or so. i am using 87 octane gas, and a 16:1 mixture using lucas semi synthetic oil. i am trying out different spark plugs. the stock LD, NGK b5hs, NGK b7hs. and i also have a NGK B4L but havent tried it yet. but they told me it was a direct replacement for the stock plug at napa. but its funny because i dont see any talk about using that plug on this or any other site. i have also moved the needle clip back and forth between the 3rd and 2nd notches quite a few times. it came with it on the 3rd. but its funny because it seems like its running too rich. and will have some oil on the plug. yet the plug starts turning gray like its running lean and burning too hot. so its a little confusing. seems no matter what i do it wont get in the right running condition.
another really dumb thing is it is very hard to start no matter what. and then i was reading on here where someone said they heard of a guy who had to heat their cold engine up with a hair dryer before it would start. i decided to try that and guess what. IT WORKED! my engine will not start unless i heat up the engine and carburetor, and open up the choke and throttle and heat up the inside, and take the spark plug out and heat up the inside of the cylinder. then it will sputer and barely want to start and i have to keep twisting the throttle until it will finally hold an idle. now im not sure if it has anything to do with the cold 20 degree tempuratures or not. but its a real pain.
another thing i wanted to bring up and ask about is this. after i run the engine for about 20-25 minutes it will be running fine. but then it will start to get a roughness in it. and have alot of vibration. and i can tell i should give it a rest. like its either getting too hot, or running too lean, or not getting the right lubrication. now is this how these engines are all the time? or is this how they act during break in, and why it is said not to run them more than 30 minutes during the break in? does this sound normal?
i just wonder if i am doing anything really wrong and if anyone thinks i am messing with it too much and running it too hard too soon? how does everyone else go about break ins?
another really dumb thing is it is very hard to start no matter what. and then i was reading on here where someone said they heard of a guy who had to heat their cold engine up with a hair dryer before it would start. i decided to try that and guess what. IT WORKED! my engine will not start unless i heat up the engine and carburetor, and open up the choke and throttle and heat up the inside, and take the spark plug out and heat up the inside of the cylinder. then it will sputer and barely want to start and i have to keep twisting the throttle until it will finally hold an idle. now im not sure if it has anything to do with the cold 20 degree tempuratures or not. but its a real pain.
another thing i wanted to bring up and ask about is this. after i run the engine for about 20-25 minutes it will be running fine. but then it will start to get a roughness in it. and have alot of vibration. and i can tell i should give it a rest. like its either getting too hot, or running too lean, or not getting the right lubrication. now is this how these engines are all the time? or is this how they act during break in, and why it is said not to run them more than 30 minutes during the break in? does this sound normal?
i just wonder if i am doing anything really wrong and if anyone thinks i am messing with it too much and running it too hard too soon? how does everyone else go about break ins?