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Post by pistonguy on Dec 25, 2015 16:06:12 GMT -5
1 year old 150cc gy6 taotao powermax 5k miles gets used about  miles a week Ok so was driving to work, all of a sudden started to lose power, slowed down and shut off. Picked it up later at night, still doesn't start. I had heard a slight clicking or tapping sound the night before it broke down, so I thought the valves were maybe too tight, but thought if that was the issue it would have started after a few hours. this is a classic symptom of a soft seize. these are the exact same symptoms my 244 had went it died, and it dies at WOT due to lack of coolant. in other words it died of excessive heat. after i got it home displayed the same starting issues, the starter would go for about a half turn then drag, go for another half turn and drag. i changed the oil in it, and then let it sit for 2 or 3 days while i repaired the cooling system. after about 3 days i got it started and the engine and starter seemed fine. the above symptoms mentioned by the OP is not a starter issue, but an engine issue. of course, this doesn't mean the starter isn't bad, but there is no indications in the OP that it would be. Look at the Pictures of the Old Piston Again. |
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Post by dollartwentyfive on Dec 25, 2015 16:21:57 GMT -5
Look at the Pictures of the Old Piston Again. what i posted was from my own experience, right down to the tapping noise and dragging starter. my engine died of excessive heat, the thing was so hot the block was smoking, the oil dipstick was partially melted. i'm amazed it ran after that. but it did, and i put many miles on it afterwards. what post are these pictures in? BTW, the crank journals in the 244 are roller bearings, not bushings. |
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Post by geh3333 on Dec 25, 2015 16:33:53 GMT -5
Rcq is right , this can be a couple things . problem is , he same symptoms shut my scoot down also , but it was the starter clutch. Exact Same issue with the engine turning over . I replaced the starter clutch and it started right up . at this point even with spark and fuel , the engine is not turning over fast enough to start. Even when I got the scoot to turn over a few times with one push of the ignition it would not start, not until the starter clutch was replaced.
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Post by dollartwentyfive on Dec 25, 2015 16:52:37 GMT -5
a locked starter clutch will not cause the starter to alternately drag and turn normally.
the only things i know off that can cause this are, low batt voltage, bad starter, seized engine.
i would imagine using a regular starter on a BBK would have the same effect.
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Post by geh3333 on Dec 25, 2015 18:14:11 GMT -5
a locked starter clutch will not cause the starter to alternately drag and turn normally. the only things i know off that can cause this are, low batt voltage, bad starter, seized engine. i would imagine using a regular starter on a BBK would have the same effect. I didn't say it was locked up , yes the rollers in the st clutch where jammed up , but the starter clutch was keeping the starter from turning over easily. Yes that will cause this issue . it already happpend . the starter clutch had a few rollers out of place , broken pieces and it was causing problems with the starter turning the engine over . the same as in the video . |
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Post by geh3333 on Dec 25, 2015 18:18:46 GMT -5
I understand that if the starter clutch was locked up , u would expect the starter would turn the engine over just the same . but that was not the case . I posted pics of the starter clutch in the thread I posted . it seemed like the starter was bad , but after using 2 other starters with the same results , I tore the side cover from the engine and found the starter clutch blown to pieces . after replacing the starter clutch , all three starters worked perfect.
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Post by dollartwentyfive on Dec 25, 2015 18:24:54 GMT -5
a locked up starter clutch or "jammed up" rollers will not cause the starter to drag.
in fact it will be no different from any other ordinary start except the clutch will not disengage when the engine fires.
IOW, the engine turns over normally but fails to start.
the engine might even turn over so fast that you would think it was running.
the OP has already mentioned the starter drags, the starter clutch will not cause this. period.
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Post by dollartwentyfive on Dec 25, 2015 18:28:26 GMT -5
I understand that if the starter clutch was locked up , u would expect the starter would turn the engine over just the same . but that was not the case . I posted pics of the starter clutch in the thread I posted . it seemed like the starter was bad , but after using 2 other starters with the same results , I tore the side cover from the engine and found the starter clutch blown to pieces . after replacing the starter clutch , all three starters worked perfect. there had to be some other issue involved here. how do you think a starter turns the engine over? by locking the starter clutch, that's how. |
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Post by geh3333 on Dec 25, 2015 18:30:55 GMT -5
I think what happened was the starters initial energy was wasted turning the broken starter clutch before the starter clutch engaged the crank. For instance let's say the starter clutch was rigged with springs. When the starter turns the clutch the springs would act like a buffer slowing down the momentum of the starter so that when the clutch finally grabs the crank , the starters initial power is not enough to spin the crank.
This is just an explanation of how this could happen. The broken starter clutch works the same way in my case. With only so many roller left coming in contact with the crank , the first initial power from the starter is lost because the clutch probably slipped on the crank , when when the rest of the loose rollers jammed up , it stopped the starter dead.
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Post by geh3333 on Dec 25, 2015 18:35:01 GMT -5
Just like a high compression engine would cause the starter to be too weak to turn it over . the broken starter clutch slowed the starter before it caught and therefore it was too weak when it finally grabbed the crank.
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Post by dollartwentyfive on Dec 25, 2015 18:38:03 GMT -5
i know this, a defective starter clutch would be at the very far end of my list of causes for starter drag, if it was on there at all.
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Post by geh3333 on Dec 25, 2015 18:41:37 GMT -5
Another thing to consider is that he already replaced the cylinder , piston and rings , so what's left ? Its not seized up .its doing the same with the new cylinder and piston . the valves are opening so its not that . the whole point is that it could be a few different things. I think he already wasted money , but only time will tell.
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Post by geh3333 on Dec 25, 2015 18:44:09 GMT -5
i know this, a defective starter clutch would be at the very far end of my list of causes for starter drag, if it was on there at all. That's because you never had it happen . I've seen it happen more than once . and if you read the thread he is at the end of the list now. |
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Post by geh3333 on Dec 25, 2015 18:48:24 GMT -5
At this point he has covered everything but the head , the starter , the solenoid and the starter clutch . of course you would start at the solenoid , then the starter , then the starter clutch . but the head is out of the question . even if you believe he has low compression , that would never cause the starter to seem weak . so the issue is in the starter area . remember rcq is right when he said that u cannot ge a compression reading with the starter not turning the engine over.
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Post by geh3333 on Dec 25, 2015 18:52:44 GMT -5
He can bypass the solenoid and connect a car battery directly to the starter and see what happens . if the same thing happens then its either the starter or the st clutch . he can then try a new starter and if it does not work then its the starter clutch . very simple.
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miles a week
