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My RT2-360 Starting Issues

  • Mauser
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My RT2-360 Starting Issues was created by Mauser

Apart from trying to break my leg she has always started but recently she won’t ? The plug is dry which is confusing I’ve pulled the carb and it’s pretty much spotless so why the dry plug ? Plenty of fuel in carb bowl but she only fires every now and again I cannot understand why no wet plug ? When she does run she runs great
I tried full throttle tonight and she started right up, I guess that points to the idle jet/circuit but all seemed good when I checked it the other week ?....when she starts she will tickover fine...weird unless there simply isnt enough fuel being drawn up under kicking but enough when running....don't help my knee all this grief lol.
Yamaha RT2 360 ~ Honda XR650R ~ Kawasaki KH400 ~ KZ650B3

18 Nov 2022 10:28 #1

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Replied by AirborneSilva on topic My RT2-360 Starting Issues

Pilot jet dirty?
1976 DT400C
1981 DT175H
1972 DT2 250
18 Nov 2022 10:54 #2

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Replied by Mauser on topic My RT2-360 Starting Issues

If I hadn’t pulled the carb 2 weeks ago I would think the same but it should be spotless ? I’ll have a look again but thinking it’s something else like a bad seal within the carb ? 
Yamaha RT2 360 ~ Honda XR650R ~ Kawasaki KH400 ~ KZ650B3

18 Nov 2022 11:10 #3

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Replied by Swoop56 on topic My RT2-360 Starting Issues

Check the starter jet in the bottom of the float bowl is clear .
18 Nov 2022 12:37 #4

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Replied by Mauser on topic My RT2-360 Starting Issues

As mentioned it was checked recently and when she starts she ticks over fine which would rule out a blocked pilot jet ?
 
Yamaha RT2 360 ~ Honda XR650R ~ Kawasaki KH400 ~ KZ650B3

18 Nov 2022 12:45 #5

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Replied by Gr8uncleal on topic My RT2-360 Starting Issues

Evening Simon.

I might have misunderstood some of the posts here, but the jet in the float bowl that Swoop is referring to is not the pilot jet, it is for the choke. I've cleared some of mine out with carb cleaner and 0.4mm copper wire.
18 Nov 2022 12:53 #6

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Replied by RT325 on topic My RT2-360 Starting Issues

You say started on full throttle, which has me thinking maybe it was flooded up in the first place. Doesn't account for dry plug though.
18 Nov 2022 13:22 #7

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Replied by Mauser on topic My RT2-360 Starting Issues

Thanks guys, I just think there is no fuel getting through even without the choke working the plug should get wet from kicking over....but no bone dry and just the odd fire from her. I'll pull the carb tomorrow morning and have another good look. But before I do I'll try the full throttle startup...if no good I'll double check the pilot jet but it was all clear and used compressor and carb cleaner on the passages.
Yamaha RT2 360 ~ Honda XR650R ~ Kawasaki KH400 ~ KZ650B3

18 Nov 2022 15:10 #8

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Replied by MarkT on topic My RT2-360 Starting Issues

It could just be "one of those things". I've had bikes occasionally not want to start and then once they do they are fine after that. Never do figure out what the problem was... usually happens after sitting a few days.

And if plug is actually wet with fuel, it's likely flooded.
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
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18 Nov 2022 15:19 #9

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Replied by adguy2112 on topic My RT2-360 Starting Issues

I use a spray bottle filled with premix and spray in the carb body while kicking to try to determine if it’s a carb issue or something else. I’m not sure if a popped crank seal would remove the vacuum to the point that fuel would not pull from the carb. I’ll let the experts answer that question. 
18 Nov 2022 17:27 #10

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