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Old January 3rd, 2022, 09:10 AM   #74
DannoXYZ
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Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011

Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C

Posts: A lot.
MOTY - 2018, MOTM - Nov '17
Quote:
Originally Posted by SuspectPage3 View Post
Picture F) the T Hose connections, are they correctly fitted? The main source comes from top of the engine, one end of T goes to right carb front right side (towards engine) and other side of T goes into left side carb first pipe. Hope that makes sense.
This area can cause lots of problems. Couldn't quite understand your description. Look at above photos and verify yours matches

1. this hose connects only to ONE carb
2. starts at right carb's brass vacuum port
3. goes to T
4. one exit of T goes to coast enricher on far left (UFO looking thing)
5. other exit of T goes forward to PAIR valve above cylinder head


one related note, left carb's brass vacuum port should have one hose going directly to petcock's vacuum port. At some point, we need to test and determine if petcock is actually flowing petrol and at what rate (ltr/min).

This is source of petrol for engine. Doesn't matter one bit if carbs are clean or if hoses are connected properly. If petcock does not flow petrol, nothing else matters. Bike will not run without petrol.

You've already confirmed this by squirting petrol directly into airbox, thus bypassing carbs. Bike starts up and revs fine when petrol is manually squirted in. Conclusion is that petrol flow is blocked somewhere between tank to petcock to carbs to engine.
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