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Post by heysus on Jun 14, 2016 23:43:18 GMT -5
I have a 2014 Tao Tao 150cc. I have a new battery, new starter, CDI is good, spark plug gets spark, I did a valve adjustment, gas is good, BUT it does not start.
I adjusted my valves to .004 inches. Bought a new CDI, but still the same result. The battery is a lithium Ion battery, and fully charged. New starter has not made a difference. Gas is the 91 kind. New air filter as well. I got a new NGK spark plug and it is gapped at about .028-.032 inches.
When I put the spark plug on metal ground, it sparks. When I take the spark plug out of the engine, my engine cranks like it wants to start, but when the spark plug is inside, it cranks and then does a "currr" sound. I checked to see if there is compression inside of the engine by putting my finger where the spark plug screws in and there was air that blew my finger off gently. Also, my intake manifold is missing the two screws that clamp it on to the metal frame below it.
PLEASE HELP.
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Post by tortoise on Jun 15, 2016 10:21:36 GMT -5
Which specific model? Which specific CDI ("performance" units are often a detriment)? Are you referring to missing air filter housing screws? Will the engine not ignite using starter fluid?
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Post by lain on Jun 15, 2016 12:07:55 GMT -5
Can you give a video? I'm not sure what a currr sound is lol
When you say the 2 screws on the intake manifold... can you explain further? If you mean the nuts and rods, you definately 100% NEED those for it to do anything.
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Post by crawford on Jun 15, 2016 17:02:56 GMT -5
Let me see does you finger tell you what PSI you getting because you need at least 150 psi and most of the time you need to crank engine over around 3 time min.
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Post by heysus on Jun 15, 2016 19:06:50 GMT -5
Which specific model? Which specific CDI ("performance" units are often a detriment)? Are you referring to missing air filter housing screws? Will the engine not ignite using starter fluid?
1. I have a 2014 150cc Tao Tao Lancer. 2. The CDI looks like the original; both are black. I purchased the new CDI from a scooter store. the new cdi only has the following numbers: 201408190890. 3. The missing nuts are on the intake manifold; i just purchased nuts and put them on tightly, but to no avail. 4. The engine does not ignite with starter fluid. |
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Post by heysus on Jun 15, 2016 19:07:58 GMT -5
Can you give a video? I'm not sure what a currr sound is lol When you say the 2 screws on the intake manifold... can you explain further? If you mean the nuts and rods, you definately 100% NEED those for it to do anything. I will record a video shortly and upload it. Yes, the nuts were missing on the manifold, but i purchased nuts and tightly sealed, but no difference. |
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Post by heysus on Jun 15, 2016 19:09:29 GMT -5
Let me see does you finger tell you what PSI you getting because you need at least 150 psi and most of the time you need to crank engine over around 3 time min. My finger does not tell me the psi. I will attempt to crank it over. |
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Post by pistonguy on Jun 15, 2016 20:10:36 GMT -5
Let me see does you finger tell you what PSI you getting because you need at least 150 psi and most of the time you need to crank engine over around 3 time min. My finger does not tell me the psi. I will attempt to crank it over. 150 minimum psi is incorrect. She will run and start just fine on Much less. purr like a kitten at 120 psi. fire up and run even closer to 100 psi. |
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Post by lain on Jun 15, 2016 20:45:25 GMT -5
Let me see does you finger tell you what PSI you getting because you need at least 150 psi and most of the time you need to crank engine over around 3 time min. My finger does not tell me the psi. I will attempt to crank it over. Strange, not all people come with PSI gauges in their middle finger like me? |
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Post by heysus on Jun 15, 2016 20:55:42 GMT -5
UPDATE: I changed the fuel filter and cleaned out the carb. I fired up the scooter with Starter fluid, but it died on me soon after. I assume it is an air problem OR the fuel petcock. Any suggestions?
Link to the video.
THANK YOU FOR ALL THE INPUT.
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Post by crawford on Jun 15, 2016 21:27:29 GMT -5
here we go 125 is on the weak side schools will teach 150 is the best . I would like to see you compression Gage test to prove what you said. I have 4 years in school trade and 25 years and auto trade. I don't believe it.
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Post by tortoise on Jun 15, 2016 22:43:48 GMT -5
Hard to tell for sure from watching the video . . but the fuel petcock outlet line appears to be routed to carb vent/overflow port, which should be open to atmosphere, instead of the carb fuel inlet port?
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Post by pistonguy on Jun 16, 2016 6:45:20 GMT -5
here we go 125 is on the weak side schools will teach 150 is the best . I would like to see you compression Gage test to prove what you said. I have 4 years in school trade and 25 years and auto trade. I don't believe it. Yes 125psi is on the Weaker side but plenty to fire right up and run. These will run on less. This ol Maitag will wash your clothe all day at 90psi.  I have no reason to snit talk this stuff, I have too much hands experience to be told otherwise. Pistonguy eats and sleeps cylinder seal Pistonguy conducts Technincal and Sales seminars for my customers national sales teams. I teach your instructors. Im the Factory guy they call with a question. I work in the field with Factory team's on there engine programs. we meet, ideas, put it to the Cocktail napkin, turn into a CAD program and were making chips. Other than the Piston development for the bike you see I also generated the Piston and Connecting Rod Skulls and Crossbones decal you see on the fender.  Her is a nice Unobtainioum Piston wipped this up for Factory Yam. Oh Oh a Four Stroke Piston with only Two Rings? how we gunna make that seal? 
This is my current Scoots PSI. A NO Sissy Breakin and she's sealed up pretty well
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Post by pistonguy on Jun 16, 2016 7:37:42 GMT -5
Hers my issue, This guy may have 119 psi and people with Very limited Experience will have him convinced he has a Top End Problem, Then he tears into the engine, makes a problem Worse and the Top End Was Not the Problem to begin with, and they Never get the thong running again. I read it over and over each riding season.
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Post by lain on Jun 16, 2016 8:05:36 GMT -5
here we go 125 is on the weak side schools will teach 150 is the best . I would like to see you compression Gage test to prove what you said. I have 4 years in school trade and 25 years and auto trade. I don't believe it. Yes 125psi is on the Weaker side but plenty to fire right up and run. These will run on less. This ol Maitag will wash your clothe all day at 90psi. I have no reason to snit talk this stuff, I have too much hands experience to be told otherwise. Pistonguy eats and sleeps cylinder seal Pistonguy conducts Technincal and Sales seminars for my customers national sales teams. I teach your instructors. Im the Factory guy they call with a question. I work in the field with Factory team's on there engine programs. we meet, ideas, put it to the Cocktail napkin, turn into a CAD program and were making chips. Other than the Piston development for the bike you see I also generated the Piston and Connecting Rod Skulls and Crossbones decal you see on the fender. Her is a nice Unobtainioum Piston wipped this up for Factory Yam. Oh Oh a Four Stroke Piston with only Two Rings? how we gunna make that seal?
This is my current Scoots PSI. A NO Sissy Breakin and she's sealed up pretty well
Is unobtainioum hard to obtain? heysus if it starts with starter fluid and dies out that normally points me int he direction of looking at the carb and fuel lines because that's usually caused by having no gas flow through the carb to the engine or the tank to the carb. |
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