Apollo DB-36 Bogging

Ianprib · 05-19-2021, 04:34 PM

Ive had the Apollo db-36 250 for about 6 months now and since the weather has changed from cold to warm, it boggs and jumps at anything past 1/4 throttle. Ive tried changing the carb to a nibbi, changing the jets, changing the needle position and repositioning the air screw. Nothing has had really any effect on it. Is there anything other than the carb that could be causing this?

TxTaoRider · 05-19-2021, 05:07 PM

Might check valve lash... that's the 1st thing that we'll tell you.

But you might check for a crack or leak in the intake manifold.

Its_not_a_honda · 05-20-2021, 04:50 AM

Easy things first. Spark plug. Non ethanol gas. Valve lash.

TxTaoRider · 05-20-2021, 05:36 AM

Quote:

Originally Posted by Its_not_a_honda

Easy things first. Spark plug. Non ethanol gas. Valve lash.

I hadn't thought of the spark plug, they are of dubious quality from China. Good call.

05-19-2021, 04:34 PM	#1
Ianprib Join Date: May 2021 Posts: 4	Apollo DB-36 Bogging Ive had the Apollo db-36 250 for about 6 months now and since the weather has changed from cold to warm, it boggs and jumps at anything past 1/4 throttle. Ive tried changing the carb to a nibbi, changing the jets, changing the needle position and repositioning the air screw. Nothing has had really any effect on it. Is there anything other than the carb that could be causing this?
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05-19-2021, 05:07 PM	#2
TxTaoRider Join Date: Oct 2020 Location: Flower Mound Texas Posts: 904	Might check valve lash... that's the 1st thing that we'll tell you. But you might check for a crack or leak in the intake manifold. __________________ 2021 Tao Tbr7 - "Lucille" Mods so far- Brozz swingarm, 21" front rim (Bridgestone Tw302 rear/Dunlop D606 front tires), Digital gauge cluster, pz30b pumper carb, after market hand guards, aftermarket brake and clutch levers, round fold away mirrors, Fly handlebars shortened slightly, 13t front sprocket 2009 Q-link Legacy 250 1982 Suzuki GS1100ES - "Jolene"
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05-20-2021, 04:50 AM	#3
Its_not_a_honda Join Date: Jan 2018 Posts: 410	Easy things first. Spark plug. Non ethanol gas. Valve lash. __________________ 2020 Kawasaki KLX300R, 2018 Yamaha TW200 If you want more of something, tax it less. If you want less of something, tax it more.
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