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Post by murkyapricot on May 7, 2015 15:40:38 GMT -5
So i am still getting a loud popping on decel, so i adjusted my valves to .005 they were nearly closed changed both oil ls and put in a new spark plug but I'm having a hard time understanding the read even looking at a chart this is with 15 miles on it mostly all WOT  just to clarify this is in response to my new uni and exhaust |
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Post by played1 on May 7, 2015 15:51:46 GMT -5
So i am still getting a loud popping on decel, so i adjusted my valves to .005 they were nearly closed changed both oil ls and put in a new spark plug but I'm having a hard time understanding the read even looking at a chart this is with 15 miles on it mostly all WOT just to clarify this is in response to my new uni and exhaust Did you re jet the carb? |
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Post by murkyapricot on May 7, 2015 16:25:10 GMT -5
Yes sorry forgot i played around with 110-125 landed on 115 not really sure if it's right feel like my rpm revs arnt as obvious as the how tos to follow
also on start up it idles very low around 1000 almost turning off but once it warms up to stays about 1800 and pretty much holds there dunno if that tells you anything
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Post by murkyapricot on May 7, 2015 16:31:12 GMT -5
Changed idle jet to 38
also the popping has gotten louder after adjusting the valves
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Post by played1 on May 7, 2015 19:37:17 GMT -5
Adjust your air/fuel ratio screw. There are a million walk throughs available online.
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Post by geh3333 on May 7, 2015 23:46:27 GMT -5
Well the plug actually looks pretty good from what I can see.
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Post by murkyapricot on May 8, 2015 10:30:56 GMT -5
Yea I've been playing around with the a/f without much luck, everyone's been saying it's lean, I gave it about a turn counter clockwise and the popping is way worse
should this lead me to believe it's too rich? The screw was almost closed before I'm guessing I should probably switch to a smaller jet?
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Post by JerryScript on May 8, 2015 11:44:09 GMT -5
Take her out and test during acceleration, steady cruise, and WOT. The way to test is to release the throttle by 1/8-1/4 turn. If the engine speeds up a bit, you are too lean. If the engine stumbles then smooths out, you are too rich. This test works best during acceleration or at WOT.
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Post by lain on May 8, 2015 11:51:21 GMT -5
I know this sounds silly, but did you check all the exhaust bolts for snug fits? If the tube is loose it can pull in air on the exhaust port and pop sometimes.
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Post by murkyapricot on May 8, 2015 12:08:54 GMT -5
Take her out and test during acceleration, steady cruise, and WOT. The way to test is to release the throttle by 1/8-1/4 turn. If the engine speeds up a bit, you are too lean. If the engine stumbles then smooths out, you are too rich. This test works best during acceleration or at WOT. Since I richened it last night, when i dove it home I was getting an occasional stumble during acceleration that I wasn't getting before, I think I will just turn the screw back to where it was until I get a chance to take the carb back out and throw in a smaller jet I know this sounds silly, but did you check all the exhaust bolts for snug fits? If the tube is loose it can pull in air on the exhaust port and pop sometimes. yes, and i slapped one of these on last week.as well www.partsforscooters.com/190-51-Premium-Metal-Exhaust-Gasket?sc=31&category=132548 i also tried spraying wd40 on the intake manifold and other various parts to make sure there were no cracks or leaks |
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Post by lain on May 8, 2015 21:38:05 GMT -5
Take her out and test during acceleration, steady cruise, and WOT. The way to test is to release the throttle by 1/8-1/4 turn. If the engine speeds up a bit, you are too lean. If the engine stumbles then smooths out, you are too rich. This test works best during acceleration or at WOT. Since I richened it last night, when i dove it home I was getting an occasional stumble during acceleration that I wasn't getting before, I think I will just turn the screw back to where it was until I get a chance to take the carb back out and throw in a smaller jet I know this sounds silly, but did you check all the exhaust bolts for snug fits? If the tube is loose it can pull in air on the exhaust port and pop sometimes. yes, and i slapped one of these on last week.as well www.partsforscooters.com/190-51-Premium-Metal-Exhaust-Gasket?sc=31&category=132548 i also tried spraying wd40 on the intake manifold and other various parts to make sure there were no cracks or leaks You have a 150cc? |
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Post by murkyapricot on May 9, 2015 0:43:02 GMT -5
Yes 150 only mods are performance exhaust and uni and cdi
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Post by murkyapricot on May 9, 2015 10:23:16 GMT -5
So I leaned it out as much as possible with the current jet and there's almost no popping at all now just a little here and there very light so i think ill drop down I've jet size and adjust from there
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Post by geh3333 on May 11, 2015 3:15:14 GMT -5
What type of high performance exhaust do you have ? Was the header any wider ?
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Post by murkyapricot on May 11, 2015 9:25:05 GMT -5
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