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Messages - netlag

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1
Super 8 / Re: 2012 50cc Super 8 2T Oil Pump
« on: July 04, 2018, 12:33:28 PM »
Unstand the only way is to pull the unit; run extended lines to the vacuum and use a drill to turn the gear.

Found that pump does not actually pump (push) at all. The gear turns a disc that simply meters an amount of oil that is vacuumed (pulled) through the lines.

Mine could have had a block behind the brass fitting, but with no access to the journal behind it... I just ordered another as Kymco states this unit is not serviciable.

UnitedCycle was the cheapest place that I found that uses the Kymco parts dealer API. Think that United had a coupon (15%?) and also free ship over $50.00.

15100-keb7-e000 ( superceeds 15100-keb7-e00)
https://goo.gl/FMwFmB

2
General Discussion / Re: We don't have wifi
« on: June 16, 2018, 02:04:42 PM »
Worst combination! Spaces; a capital letter; and an apostrophe.

Place near me uses "elite" text. cappuCcinoOrbUst

annoying.

3
Super 8 / Re: '12 50 2T not starting - has power, fuel, spark and low compression; Worn rings?
« on: June 15, 2018, 12:24:40 PM »
Don't recall reading that one. Sounds familiar scenario though. While frustrating, glad that it was experinced as this and that troubleshooting info will make future episodes easier to diagnose.

4
Super 8 / Re: '12 50 2T not starting - has power, fuel, spark and low compression; Worn rings?
« on: June 14, 2018, 02:37:59 AM »
Hrmmm. Put it back together this morning figuring that I would start diagnostics again.

Was delayed in doing it the other day as I lost a wrist (circlet) somewhere the the day before.

Managed to find a correct size donor pin at a local shop. Figues it would have a larger gap. Desperation setting in...decided to lesson the gap manually even with the likelyhood of possible failure. Click. Hurrah!

Worked my way back through leaks, air, gas, and spark while placing the components back.

Full tank gas; and carb was fully operational when placing it.

Could not recall what level of spark the spark plug displayed last test. Pulled both ends and thought to reset the connections just in-case.

Left the air chamber for last to put back on.

Squirted some raw gas past the auto-choke and sure enough it gurgled.

Another squirt and it was running again.

Suppose somewhere in the build-back corrected the no-start condition.

Thanks to all those that commented. Suppose I am back to this scoots mod thread I started.

5
Super 8 / Re: '12 50 2T not starting - has power, fuel, spark and low compression; Worn rings?
« on: June 12, 2018, 03:51:29 PM »
reeds looked great.

6
Super 8 / Re: '12 50 2T not starting - has power, fuel, spark and low compression; Worn rings?
« on: June 12, 2018, 11:33:04 AM »
Quote from: Chris0381 on June 12, 2018, 11:21:39 AM
Have you checked the reed valves?

Also.

I think the throttle has to be held wide open when kicking the motor for the compression test.

Not as yet for reed valves. Was at full throttle during compression test.

7
Super 8 / Re: '12 50 2T not starting - has power, fuel, spark and low compression; Worn rings?
« on: June 12, 2018, 12:36:29 AM »
Not sure if I should bother with the BBK for the moment.

Looking at the head and gasket; cylinder and piston, and piston rings themselves... I don't see any glaring issues. Slight wear on top of piston and one small discolored looking line on side of piston.

Have not had time to put a gauge between the cylinder wall and rings, but they feel snug when manually running the piston through the cylinder.

Even the lower gasket looked ok, even though it seemed to be permatex vs fiber.

Wondering what I am missing. No reason to invest another 200.00 in the wrong direction.

8
Super 8 / Re: '12 50 2T not starting - has power, fuel, spark and low compression; Worn rings?
« on: June 06, 2018, 10:47:54 PM »
Has anyone noticed any deals on 70-BBK for the KF10AA?

Found the 70cc Malossi BBK for 139. Sounds like good deal to me... Suppose I should plan on upjetting the stock carb to around 90-94?

9
Downtown 300 / Re: amber or chrome bulb for the front turn signal.
« on: June 06, 2018, 11:21:04 AM »
What does DRL mean?

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Downtown 300 / Re: amber or chrome bulb for the front turn signal.
« on: June 05, 2018, 09:39:42 PM »
Have read that the flasher lamps tech is called dichroic interference coating. Allows for look to be chrome, but emites amber colored light.

BAUS15 is available in amber version Sylvania #7507, Philips #12496 on the web for under $4 each.

The Diochrioc (chromed) version is Sylvania 7507LDA
under $8 each.

Have read  here that people are using LED, but lost the links.


11
Super 8 / Re: '12 50 2T not starting - has power, fuel, spark and low compression; Worn rings?
« on: June 05, 2018, 11:17:27 AM »
Yes, this is the same motor that had the oil injector issue. Although there was a slight burble earlier in the day and of course this instance. Engine had been running fine since replacing the injector earlier last week.

Besides this, had assumed that there was going to be some damage to cylinder wall, and piston from earlier use, as I purchased it used with 11k a few months back. Also, it was run hot twice before the injector was diagnosed and premixing was utilized until the injector was placed. Have not pulled the head as of yet, but just expecting the worst. That is why I figured to just replace cylinder toi.

Not sure of any testing perfirmed outide of what I have done. As to the quality of the guage I am using... it looks like Harbor Frieght, but mine is free rental from Autozone. If it is inaccurate, atleat it is consistently inaccurate. It gave thw same reading when I pulled it off before and after test to ignite.

I have zero experience for port and polish. Would be great to get extra flow; although, I dont have a flow bench to check for improvement. Also, not changing exhaust any further atm. So, unless head is available already finished... will probably pass on it this round.

12
Super 8 / '12 50 2T not starting - has power, fuel, spark and low compression; Worn rings?
« on: June 05, 2018, 04:25:45 AM »
Engine seemingly died over the weekend as after 10 mile run. Stopped for a drink at store and started back up okay. Paused for two minute idle and the the engine cut off. Tried to start again and nothing. Checked the usual suspects  such as battery, gas, oil, and spark and found all available. Just not igniting. Fact that it would turn, but not ignite led me to believe deeper issue might be at hand as engine has 12k mileage.

Had time to test it again today. Double checked battery, fuel, oil, and spark. All tested as available.

Stumped, so chose Internet research instead. The results lead me to understand that the issue could be depleted piston rings.

Couple phone calls lead me to learning from a mobile mechanic guy that Engine Restore might cure same, so planned to try that. Also, figured that the result would be the same as the wet/dry compression test technique I just researched.

Tested three times:

30 psi (dry)

90 psi (wet)
 
Figured 90 psi was close enough to make a determination that the rings were shot as the motor was not igniting at that psi either

Also, during the compression buildup tried test firing with the plug in place to see if any difference igniting would happen. Nothing did.

Anyways... compression was back at 30 psi after leaving it sit for 30 min break.

At this point I am planning to do a full-top end rebuild with BBK parts if I am going to bother with the rings.

Although, thought to ask the forum if anyone has had like issues.

Please share similar results, or symptoms including or not including worn rings.

Thanks.

13
Super 8 / Re: 2016 Kymco Super 8 50x 4 Stroke Derestricting Problems
« on: May 28, 2018, 10:03:53 PM »
Quote from: AKL_HBG on May 27, 2018, 03:26:50 PM
The new CDI from China did not work.   It gave me the same performance as the OEM CDI from Kymco.  My speed is still restricted  to 33 mph.  BTW I use GPS to track all my speeds.

I just removed one of the purple wires from the  CDI wire assembly and I am up to 35-36 MPH.   I still think my scooter is still restricted, but my dealer stated that they did all the required derestrictions and it is completely deresticted.   Not very happy right now with a top speed of 35 MPH!!!

I only get 38 on my 2t on the best day here in FLA. Last two days with so much moisture... 32-35 max.

What has your dealer stated performance should be?

14
Super 8 / Re: 2012 50cc Super 8 2T Oil Injector
« on: May 28, 2018, 06:55:57 PM »
Quote from: Chris0381 on May 27, 2018, 10:19:31 PM
There are a few gurus on here that I dont see much any more that did mention, you should upjet once you mod the snorkel and exhaust. 85 seemed a sweet spot . I up jetted even more when I opened up the box and never bothered to down jet again.
.

Removed and replaced the pump today.

Not sure how the "drip" test works for you all with no vacuum. Found that by removing the plate on the old one..these things are really like a meter vs pump as there is no push. Oil is vacuumed to the intake manf and the carb. No wonder there is no flow, drip, or drop. Learned that there is a  metering dial in the pump which turns only slightly when the cam is turned...not enough to create any sort of "push".

Supoose also that the old pump had some garbage in the chamber under the brass fitting (outlet). Not going to bother wasting wd-40 to check if the blindspot can be cleaned.

Since installing can see that engine is getting oil now from both the pump and  premix. Thankfully, I only have 1/4 tank premix left.

Suppose next project will be the 85 jet, so back to my tuning post I go.

15
Super 8 / Re: 2012 Super 8 - Powerband and carb tune
« on: May 27, 2018, 01:16:50 AM »
Quote from: Chris0381 on May 26, 2018, 11:37:31 PM
Opened up my box also and it would initially bog big time then speed up. I closed the box back up ever so slightly and its was smooth again. Running a 90+  jet, I don't remember which exact jet I'm running

Ah, okay. For me it seems that I can still use the OEM jet ((99101-116-0700)#70)) with the exhaust mod,  and could also use it after snorkel mod with some fine tuning (gain of 1-2 mph).

Will keep 90+ jet in mind if drilling, or moving to a cone.

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