rebuilt motor will not start

[havoc983]

As stated i recently rebuilt a blown motor as it blew from an oil leak i found the leak afterwards and have repaired it in the rebuild i replaced the crankshaft and seals
Replaced piston and rings, wrist pin and clips as well
I didnt however replace my gasketson the way down i inspected them amd saw no damage or at least it appeared as such
After i put the motor back together and reconnected all the connections i tried to fire it up but no luck
It cranks but will not turn over the motor
I also noticed a small slow drip of oil which indicates my previous check of the gaskets was proven false
The next question is if a gasket is ripped or messed up in any way could that prevent the scooter from obtaining the necessary starting conditions and if so would it be fixed by replacing all gaskets in other words restrip replace and rebuild again to see if the problem is solved

Ahead of time thanks to anyone who helps me all input is greatly appreciated
I also forgot want to at least see if i can get it to fire before buying a gasket set i have a baby on the way so funds are a bit tught at the moment but it just occurred to me i forgot to adjust the valve gaps on the scooters after the rebuild thats probably part if my issue

[Fox]

The valve gaps aren't part of the issue, they most likely are the issue. The cam has to be in the cam chain with the T marked lined up and the holes in the right position. If the cam is off in the chain by just one tooth it will screw up the valve timing.

 I rebuilt a 150 engine that was run with no oil that cracked where the timing chain passes through the head from the heat. I didn't notice the crack until I fired it up with no fan shroud after the rebuild. I had to replace the head. I should have inspected the parts better.  

If you take off the fan shroud plastics and then install the intake, carb and exhaust and then you can fire the engine up for a minute or two and find the oil leak easily.

[scooter 49]

One thought to add. When rebuilding the top end of an engine I would always use NEW gaskets. Why take the chance[as in your case} and have it leak after all that work.

[Fox]

Yeah you're right.  I re-used the old base gasket but I did put on a new head gasket on the engine I did. I used RTV High Temp silicone on both gaskets but since it had a cracked head it still leaked so I ended up re-using the head gasket with silicone on the second head. If you use silicone, you have to let it dry all night before you fire it up. longer if it's really cold outside.

[havoc983]

So as an update i actually found a new motor on the good ol cl for 40 dollars and it runs i have swapped over the motor with no trouble but found now the starter motor doesnt work all connections are good i transfered the wiring system for the new motor to ensure netter compatbility but the motor just winds and wont catch to crank both when jumped and when using the starter switch and i meant jumping the solenoid

Sometimes while jumping the solenoid i get nothing but a buzz or a click or even nothing at all
Would it be wise to just reace both solenoid and starteror is the culprit something else

And a side note the motor was tested using kickstart but the gear is stripped to severely for use now so i need the starter motor

[Fox]

Have you inspected the starter Bendix?  If it's dirty then it could be hanging up.

[havoc983]

Have you inspected the starter Bendix?  If it's dirty then it could be hanging up.

Yes i did but it doesnt sound like it is even engaging the bendix tried to jumper the starter motor unmounted but the motor didnt evem bounce a little so i am not sure yet what the true issue is i tried to start the motor with the starter dismounted from the engine to see if i could see a little life in it but again not even a twitch

[Fox]

Have you tried swapping the starter motor from the old engine?

[havoc983]

Have you tried swapping the starter motor from the old engine?

Yes but given the way the old one was wired the previous owner bypassed electric start amd relied on kickstart i believe its a dud i have tried all combinations of both solenoids and starter motor but nothing on the ones from the old motor and mine hums or clicks and the starter motor just makes a wizzing kind of sound like the clutch inside if it has one isnt engaging

[Fox]

Time to spend some money. I bought parts from this dealer before. They ship pretty fast.

http://www.ebay.com/itm/New-OEM-Starter-10T-Gy6-50cc-139QMB-Chinese-Moped-Scooter-Starting-Motor-/400252957154?pt=Motorcycles_Parts_Accessories&vxp=mtr&hash=item5d30ef71e2

[havoc983]

Time to spend some money. I bought parts from this dealer before. They ship pretty fast.

http://www.ebay.com/itm/New-OEM-Starter-10T-Gy6-50cc-139QMB-Chinese-Moped-Scooter-Starting-Motor-/400252957154?pt=Motorcycles_Parts_Accessories&vxp=mtr&hash=item5d30ef71e2

So u believe all i need is the starter motor and not the solenoid or should i just get both to be safe then?

And also may have a friend with a starter i might bw able to try before hand

[Fox]

If you jumped the relay terminals with a good battery and it struggled then the starter is the fault.  You may just have a low/dying battery. 

[havoc983]

If you jumped the relay terminals with a good battery and it struggled then the starter is the fault.  You may just have a low/dying battery. 

I didnt use a good battery i just hook mine to jumper cables off my car with the car off i dont have a spare battery but how else can i jump the relay other than a screwdriver or jump the starter motor itself i have only tested them while hook to thr scooter

[Fox]

You need to just buy a new battery.

 To test the starter, you can hook the negative jumper from the car directly to the scooter engine for the best ground The kick lever is a great ground so hook it to that. Then you touch the plus cable to the terminal on the relay that has the wire that goes straight to the starter. That way you are by-passing the weak battery and the relay and getting a full ground through the engine and full positive voltage to the starter. The starter grounds itself through it's body. The plus is where the wire connects to it.

 One thing I've learned is that there is no real substitute for doing it right. Buy a new battery!

[havoc983]

You need to just buy a new battery.

 To test the starter, you can hook the negative jumper from the car directly to the scooter engine for the best ground The kick lever is a great ground so hook it to that. Then you touch the plus cable to the terminal on the relay that has the wire that goes straight to the starter. That way you are by-passing the weak battery and the relay and getting a full ground through the engine and full positive voltage to the starter. The starter grounds itself through it's body. The plus is where the wire connects to it.

 One thing I've learned is that there is no real substitute for doing it right. Buy a new battery!

Alright i will get another battery and see if it does anything also