roketa mc-06 problems

jatgm1 · 06-13-2017, 07:24 PM

I have a Roketa mc-06 that's backfiring when I rev it and sometimes just stops running. Also the lights dim at idle. Any thoughts before I go taking it apart? I'm probably gonna try adjustment of the idle speed first.

ripcuda · 06-13-2017, 10:40 PM

The backfiring indicates it is running very lean. Pull the carb and ensure the jets and passages are clean. Also check the intake manifold for tears in the rubber... or missing O-ring seals on the manifold and carb. Most CBs are jetted lean from the factory. When you remove your carb to clean and inspect the jets... note down the jets installed. Post up here which ones you got and we can give recommendations.

Also check the A/F mix screw setting... shouldn't be screwed all the way in (tight).

Might also check you don't have an exhaust leak somewhere.

Cheers!

pete · 06-14-2017, 05:45 AM

check the ignition timing has not slipped..
valve clearances for a tight valve..
PS... is it back fireing out the pipe or carb ?

..

jatgm1 · 06-14-2017, 08:41 PM

It's popping, like the exhaust pops when I receive it then let go. And it's a gy6 style engine not cb125 style engine.

06-13-2017, 07:24 PM	#1
jatgm1 Join Date: Apr 2017 Posts: 147	roketa mc-06 problems I have a Roketa mc-06 that's backfiring when I rev it and sometimes just stops running. Also the lights dim at idle. Any thoughts before I go taking it apart? I'm probably gonna try adjustment of the idle speed first.
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06-13-2017, 10:40 PM	#2
ripcuda Join Date: Mar 2015 Location: Spokane, WA Posts: 253	The backfiring indicates it is running very lean. Pull the carb and ensure the jets and passages are clean. Also check the intake manifold for tears in the rubber... or missing O-ring seals on the manifold and carb. Most CBs are jetted lean from the factory. When you remove your carb to clean and inspect the jets... note down the jets installed. Post up here which ones you got and we can give recommendations. Also check the A/F mix screw setting... shouldn't be screwed all the way in (tight). Might also check you don't have an exhaust leak somewhere. Cheers! __________________ '20 TaoTao Hellcat 125 "grommet" '04 Yamaha TTR-125LE '00 Yamaha TTR-90 '07 Kinroad XT200GY Runmaster (sold) '07 KMD GY6 150cc ATV (sold) '07 Kangchao 250cc ATV Monster (sold) Baja Moto DB-30 "Doodlebugs"(x3) (sold) '06 Hi-Bird 200 parts bike (sold)
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06-14-2017, 05:45 AM	#3
pete Join Date: Jan 2012 Location: ChCh , NZ Posts: 2,266	check the ignition timing has not slipped.. valve clearances for a tight valve.. PS... is it back fireing out the pipe or carb ? .. __________________ 09 XT660R ... 06 TTR250 ... 80 Montesa H6 125 Enduro... 77 Montesa Cota 348 MRR "Malcom Rathnell Replica"... Current resto projects.. 81 Honda CT110... 80 Kawasaki KL250A1... 11 Husaburg TE125 enduro... "sold" along with another 31... Lifan 125 Pitbike.. "stolen" ... KIWI BIKER FORUM...... http://www.kiwibiker.co.nz/forums/content.php All the best offroad rides in NZ... http://www.remotemoto.com/ E-mail... xtpete1@gmail.com
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06-14-2017, 08:41 PM	#4
jatgm1 Join Date: Apr 2017 Posts: 147	It's popping, like the exhaust pops when I receive it then let go. And it's a gy6 style engine not cb125 style engine.
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