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 164cc zuma 
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Post Re: 164cc zuma
Is the engine turning over and just not firing up? If its turning over and not giving fire. It can be a few things. One of the biggest ones is the top set of lashes on the head. You must make sure they are to spec because if any air is getting in the valve it wont fire up. I have had this happen to me 3 times and every time it was the valve lash's not being to spec. Now if the engine is not turning over and it does not sound like a water pump trying to suck air. its the starter or the battery. Do you hear the fuel pump try to fire up when you just switch the key to the " on " position. My bike was a 2009 model with the defective fuel pump issue. ( recall ) but you just need to see for now if the engine is trying to turn over when you hit the starter button. Your videos arn't showing me if you are holding down the starter button and letting the engine turn over... What say you?

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Mon Sep 25, 2017 12:21 pm
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Post Re: 164cc zuma - Warm restarts
dmevis wrote:
Since my 155 BBK install, I am having problems with warm re-starts. The scooter runs just great. If I turn it off and a nice ride, and then try to restart the scooter within about 5 minutes, it will not re-start. If I then wait about 30 minutes, it will usually re-start just fine.

Did you ever have problems with warm re-starts? And if so, did the Hoedar ECU solve those problems?


re-check your valve lash, during break in it does get tighter and cause idle and starting issues. set it on the looser side.

hoedar ecu does make it easier to start and monitors all vitals during starting so u can see what's going on.

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HOEDAR ECU, GJMS, HOBAO, KOSO, PG,
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Mon Sep 25, 2017 10:26 pm
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Joined: Sun Nov 27, 2016 12:09 pm
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Location: Cardiff (San Diego), CA
Post Re: 164cc zuma - Warm restarts
Race Concept wrote:
dmevis wrote:
Since my 155 BBK install, I am having problems with warm re-starts. The scooter runs just great. If I turn it off and a nice ride, and then try to restart the scooter within about 5 minutes, it will not re-start. If I then wait about 30 minutes, it will usually re-start just fine.

Did you ever have problems with warm re-starts? And if so, did the Hoedar ECU solve those problems?


re-check your valve lash, during break in it does get tighter and cause idle and starting issues. set it on the looser side.

hoedar ecu does make it easier to start and monitors all vitals during starting so u can see what's going on.


I set the valve lash 150 miles ago when I installed the BBK. I set the valves to nominal when the engine was sitting on my workbench. I just checked them, and they were still at nominal. I opened up the valve lash to the maximum factory setting, per Chris at RC. Took a nice easy ride... turned off the scooter... waited 10 seconds... started right up... Performed an ECU Reset, and let it idle for 10 minutes... Turned it off... waited 2-3 minutes... and it would not restart! Then I let it sit another 20 minutes, and it fires right up. This is pretty typical of the problem I am having. When warm, will restart within a few seconds of turning it off, but won't restart after a few minutes of turning it off, and then will restart 20 minutes later.

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2015 Zuma 125

CHASSIS: Dual headlight Mod plus modulator. KOSO Afterburner taillight plus modulator. Louder horn. GPS. Rear rack. Seat Mod. Smoked turn signal covers. Michelin City Grip tires. Folding mirrors. 260mm front brake rotor. GJMS rear shocks.
ENGINE: Simoto intake filter. Lightweight fan. NCY Exhaust. Taida finned valve & cam covers. 155 BBK (with bigger cam and injector)
TRANSMISSION: TST Variator (9 & 10 gram weights). KOSO lightweight Clutch Bell. NCY contra spring bearing. 1000 RPM contra spring. KOSO CVT cover.


Wed Sep 27, 2017 6:39 pm
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Post Re: 164cc zuma
This may sound too simple, but check your fuel cap venting. I had similar issues, went away after cleaning and oiling fuel cap.


Thu Sep 28, 2017 2:58 am
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Location: Cardiff (San Diego), CA
Post Re: 164cc zuma
dragstart wrote:
This may sound too simple, but check your fuel cap venting. I had similar issues, went away after cleaning and oiling fuel cap.


Thank you for the suggestion. Do you happen to have any information on how to clean the fuel cap???

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2015 Zuma 125

CHASSIS: Dual headlight Mod plus modulator. KOSO Afterburner taillight plus modulator. Louder horn. GPS. Rear rack. Seat Mod. Smoked turn signal covers. Michelin City Grip tires. Folding mirrors. 260mm front brake rotor. GJMS rear shocks.
ENGINE: Simoto intake filter. Lightweight fan. NCY Exhaust. Taida finned valve & cam covers. 155 BBK (with bigger cam and injector)
TRANSMISSION: TST Variator (9 & 10 gram weights). KOSO lightweight Clutch Bell. NCY contra spring bearing. 1000 RPM contra spring. KOSO CVT cover.


Thu Sep 28, 2017 4:11 pm
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Post Re: 164cc zuma
It sounds straight forward. just clean the gasket and then lube it up lightly with an oil or something to help it seal.

Now just so i get this right. it turns over but wont start right?

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Fri Sep 29, 2017 6:08 am
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Post Re: 164cc zuma
dmevis wrote:
dragstart wrote:
This may sound too simple, but check your fuel cap venting. I had similar issues, went away after cleaning and oiling fuel cap.


Thank you for the suggestion. Do you happen to have any information on how to clean the fuel cap???


Check my post on the main 125 section, titled 'save yourself some headaches' or something like that......see if that doesn't resonate.


Sun Oct 01, 2017 3:42 am
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Post Re: 164cc zuma
Here are some shots of where I am at at the moment.


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Sat Oct 07, 2017 9:49 am
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Post Re: 164cc zuma
and more shots


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Sat Oct 07, 2017 9:53 am
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Post Re: 164cc zuma
and more....


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Sat Oct 07, 2017 9:54 am
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Location: Cardiff (San Diego), CA
Post Re: 164cc zuma
Very nice Pics. Thank you for posting.

I don't think that Hoedar ECU looks very good on your scoot. I am willing to take it off your hands for $50. ;)

Also. What is the purpose of a frame stretch? Is it purely cosmetic, or does it also help the ride?

_________________
2015 Zuma 125

CHASSIS: Dual headlight Mod plus modulator. KOSO Afterburner taillight plus modulator. Louder horn. GPS. Rear rack. Seat Mod. Smoked turn signal covers. Michelin City Grip tires. Folding mirrors. 260mm front brake rotor. GJMS rear shocks.
ENGINE: Simoto intake filter. Lightweight fan. NCY Exhaust. Taida finned valve & cam covers. 155 BBK (with bigger cam and injector)
TRANSMISSION: TST Variator (9 & 10 gram weights). KOSO lightweight Clutch Bell. NCY contra spring bearing. 1000 RPM contra spring. KOSO CVT cover.


Tue Oct 10, 2017 10:15 am
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Post Re: 164cc zuma
The stretch makes the bike feel a bit longer, giving the shocks a smoother ride. The stretch is a fun upgrade and it changes the look of the bike.

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Wed Oct 11, 2017 9:54 am
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