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#1 |
Join Date: Apr 2024
Posts: 4
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2020 csc tt250
Where do these lines connect to? I think a few of them are mixed up but I can’t find a proper diagram for them or anything in videos. My bike isn’t starting at all and I’m not sure if this is the cause
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#2 |
Join Date: Feb 2021
Location: Kansas City
Posts: 2,655
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Looks like a vacuum line for you EGR valve. Not necessary, at least won't keep it from running. But if the vacuum source that plugs into is not plugged, it could make it hard to start.
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-NOS 2020 KTM 250SX (2-stroke motocross) |
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#3 |
Join Date: Apr 2024
Posts: 4
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I’m pretty new to this and have no idea where they should be connected to
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#4 |
Join Date: Aug 2022
Location: Lincoln CA
Posts: 133
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The hose in your first photo is supposed to attach to a fitting on the intake manifold. The intake manifold is the black rubber piece between the cylinder head and the carburetor.
The fitting on the side of the carburetor is the float bowl vent. If the bike is equipped with an evaporative emissions canister, it connects to one of the fittings on the canister. The canister is a round black piece about the size of a regular can of soup and would be located under the left side fairing. The other fitting on the canister is for the fuel tank vent hose. If your bike is no longer equipped with a canister (someone removed it), you can simply connect a length of hose to that fitting on the carburetor and route it down under the bike, alongside the hose that comes off the bottom of the carburetor, which is the float bowl drain hose.
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-2024 CSC TT250, stage 3 motocult kit, Nibbi PE28FL with custom-made cable controlled choke, modified stock muffler (larger diameter tailpipe), custom oil cooler installation with relocated stock evaporative emissions canister, oversized stainless steel footpegs, IMS folding tip shifter, a few little blingy bolts and bits. More personal preference mods to come. |
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#5 |
Join Date: Aug 2022
Location: Lincoln CA
Posts: 133
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It's a pulsed air injection valve, not an EGR (exhaust gas recirculation) valve.
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-2024 CSC TT250, stage 3 motocult kit, Nibbi PE28FL with custom-made cable controlled choke, modified stock muffler (larger diameter tailpipe), custom oil cooler installation with relocated stock evaporative emissions canister, oversized stainless steel footpegs, IMS folding tip shifter, a few little blingy bolts and bits. More personal preference mods to come. |
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#6 | |
Join Date: Jan 2021
Location: Lehigh Valley Area
Posts: 165
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Quote:
Never understood why the low temp hoses and everyone calls them EGR valves too. 3 lines I found on my bike, 1 sensing line(being held), a line to draw filtered air from airbox, and last line to feed air on exhaust to allow cat to work fully. Some people cap and remove lines, since cats usually go wayside, but know this maybe this will help you figure what to do. Tell us what you decide and love sharing of photos.
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- My 3 Bikes: 1. TaoTao TBR7 (My TBR7 Upgrades) 2. Boom Vader (FYI: My Boom Vader Upgrades) 3. 1978 Suzuki SG750 --------------------------------------------- Testing a YouTube Channel ![]() |
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#7 |
Join Date: Oct 2021
Location: The burbs of Chicago
Posts: 247
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For photo reference, these two with the red arrow are connected. I couldn't trace out where the one from the carb side port goes to for a pic, at this time. This is from a 2021 TT250.
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2021 CSC TT250 |
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#8 | |
Join Date: Feb 2016
Location: NY
Posts: 176
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Quote:
Hose in first pic goes to the intake boot (coupling between carb and motor), second one goes to the charcoal canister. reference: forgive the horrible pics/paint writing, but I took these when I removed my emissions.
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2005 CBR600RR
2016 CSC TT250 Coming Soon |
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#9 | |
Join Date: Oct 2021
Location: The burbs of Chicago
Posts: 247
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Quote:
I was wondering about removing the emissions canister, it's just kind of annoying and looks dumb. Is there any re-jetting involved with that? So if I take it off and route the "side" port of the carb hose down to the bottom, would I just remove the other canister hose that goes to the tank?
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2021 CSC TT250 |
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