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Post by coachhejl on Jan 25, 2023 10:41:46 GMT -5
for history sake:
I bought a 2008 vento triton gt5. It had super low compression so I rebuilt the top.
Put it all back together and tuned the carb and had it running perfectly.
One day it wouldnt hardly start. And then it wouldnt...so I pulled the carb and RE-cleaned it thoroughly.
After that it ran well, started right up, etc...
ever since then there are a couple of factors that make it hardER to start and sometimes itll start, but idle will stay around 1000. When it gets going, idle is 1900-2200.
Main factors are sitting a day and cold weather.
combining any of these makes it worse. If it sits two days and its cold...I cant get it to start, I found out this morning.
What do I need to check?
When it wakes up and runs, it runs like heck with ZERO problems.
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Post by coachhejl on Jan 25, 2023 10:55:17 GMT -5
One thing thats a theory to me is that I disabled the oil injection and run about 35 to 38:1 ratio.
Maybe its too thick and needs to be re-jetted? Both pilot and main.
The spark plug, you can still see white on the white part. Its not light or dark brown.
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Post by coachhejl on Jan 25, 2023 15:13:29 GMT -5
So pulled it all apart and thoroughly cleaned. Every part in the carb.
Fired up and ran like a champ. Something is slowly causing carb to make hard starting.
Carb is clean inside. I do have a fuel filter and I am not using a vacuum petcock...it's a valve type. On or off.
Bowl wasn't flooded.
Not sure. We will see if it progresses bad again.
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Post by Lucass2T on Jan 25, 2023 17:45:14 GMT -5
I disabled the oil injection and run about 35 to 38:1 ratio. The spark plug, you can still see white on the white part. Its not light or dark brown. That ratio is waaaay too fat, mix at 50:1 max. Unless you are using oil from 70 yrs ago or the cheapest of the cheapest, 50:1 will be fat enough. Better yet, change to 100% synthetic oil AND go back to 50:1. Then, do a leak down test: 49ccscoot.proboards.com/thread/506/make-2t-leak-tester-waysSpark plug should have the color of wet cardboard. No white spots and no black spots. Put in a larger choke jet and see if the problems disappears.
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Post by coachhejl on Jan 26, 2023 13:14:19 GMT -5
Could it simply be the oil ration too thick causing this? I disabled the oil injection and run about 35 to 38:1 ratio. The spark plug, you can still see white on the white part. Its not light or dark brown. That ratio is waaaay too fat, mix at 50:1 max. Unless you are using oil from 70 yrs ago or the cheapest of the cheapest, 50:1 will be fat enough. Better yet, change to 100% synthetic oil AND go back to 50:1. Then, do a leak down test: 49ccscoot.proboards.com/thread/506/make-2t-leak-tester-waysSpark plug should have the color of wet cardboard. No white spots and no black spots. Put in a larger choke jet and see if the problems disappears.
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Post by Lucass2T on Jan 26, 2023 15:31:02 GMT -5
Could it simply be the oil ration too thick causing this? That ratio is waaaay too fat, mix at 50:1 max. Unless you are using oil from 70 yrs ago or the cheapest of the cheapest, 50:1 will be fat enough. Better yet, change to 100% synthetic oil AND go back to 50:1. Then, do a leak down test: 49ccscoot.proboards.com/thread/506/make-2t-leak-tester-waysSpark plug should have the color of wet cardboard. No white spots and no black spots. Put in a larger choke jet and see if the problems disappears. You mean the mix ratio? Nope. And if it did, something else is wrong. How did you come to that idea if I may ask???
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Post by coachhejl on Jan 27, 2023 10:13:58 GMT -5
Just thought mixing it thicker would protect motor better/longer. It's still acting up..only at taking off at idle and when I first start it up. And only sometimes. Could it simply be the oil ration too thick causing this? You mean the mix ratio? Nope. And if it did, something else is wrong. How did you come to that idea if I may ask???
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Post by coachhejl on Jan 27, 2023 10:16:19 GMT -5
I see new enrichers...but not bigger choke jets? I disabled the oil injection and run about 35 to 38:1 ratio. The spark plug, you can still see white on the white part. Its not light or dark brown. That ratio is waaaay too fat, mix at 50:1 max. Unless you are using oil from 70 yrs ago or the cheapest of the cheapest, 50:1 will be fat enough. Better yet, change to 100% synthetic oil AND go back to 50:1. Then, do a leak down test: 49ccscoot.proboards.com/thread/506/make-2t-leak-tester-waysSpark plug should have the color of wet cardboard. No white spots and no black spots. Put in a larger choke jet and see if the problems disappears.
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Post by Lucass2T on Jan 27, 2023 22:12:06 GMT -5
Not sure what carburetor is on your bike. Is it a Dellorto? Or something else?
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Post by 190mech on Jan 27, 2023 23:43:15 GMT -5
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Post by coachhejl on Jan 28, 2023 0:26:34 GMT -5
All that's stamped is "Leader" "PZ19J" On the carb. Not sure what carburetor is on your bike. Is it a Dellorto? Or something else?
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Post by Lucass2T on Jan 28, 2023 3:49:21 GMT -5
All that's stamped is "Leader" "PZ19J" On the carb. Not sure what carburetor is on your bike. Is it a Dellorto? Or something else? Thats a Teikei 14mm clone. Teikei carbs were used in some 90's minarelli engines like my Yamaha Axis. Im pretty sure you can use genuine Teikei or (also called) TK jets in yours.
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Post by Lucass2T on Jan 28, 2023 4:02:58 GMT -5
All that's stamped is "Leader" "PZ19J" On the carb. Thats a Teikei 14mm clone. Teikei carbs were used in some 90's minarelli engines like my Yamaha Axis. Im pretty sure you can use genuine Teikei or (also called) TK jets in yours. Edit: those TK carbs may not have a seperate choke/enricher jet. Read Johns post above about carb cleaning. Take special attention to the little orifice in the float bowl John is pointing at.
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Post by captincvmn on Jan 28, 2023 7:55:53 GMT -5
I had the same engine. Double check the auto choke and make sure it’s working. Also with the vacuum petcock if you have any kinda bowl leak it’ll take a lot of kicking cranking to refill the bowl to enable starting.
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Post by coachhejl on Jan 28, 2023 13:04:11 GMT -5
Replaced petcock with valve. Disabled vaccuum. How do you check this choke? I've pulled it out? Then if you hook it to 12v direct, what should it do? It's spring loaded into it's orfice. I had the same engine. Double check the auto choke and make sure it’s working. Also with the vacuum petcock if you have any kinda bowl leak it’ll take a lot of kicking cranking to refill the bowl to enable starting.
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