Synchronising The Starter Valves On 6th-generation VFR800




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Did this video help you?

Andrew Goodman: Great tutorial, and the best part is you survived, and didn't gas yourself by running your bike inside a closed garage. 

Antonio T Posadas: one question on a 1998 honda vfr 800cc is fuel injection,yes or no and yes way it has a trottle cable advise please thanks

KaldekBoch: Could be the starter valves or possibly your fast idle wax unit isn't adjusted far out enough. A good way to test is to crack the throttle a tiny (and I mean *tiny*) bit the next time you try a cold start. If the bike fires right up with a slightly open throttle it means the bike wants more air. When the bike eventually starts cold - does it hold a high idle (above 1,500rpm) or does it want to stall until it warms up?

Thomas Hansen: Hey Kal. Nice that there is someone like you to help out rookies like me. I just bought the Carbtune device, and is about to do my first injection sync on my VFR 800 VTEC. Is the starter valve sync the ONLY thing I need two do in regards to the syncronization of my throttle bodies?

Rangerscott: The best thing I found to hold the take up and is more stable is a plastic spray squeegee for an automobile.

KaldekBoch: @Rangerscott69 Yeah, I actually don't have any of those, believe it or not!

KaldekBoch: Mileage changes won't be caused by starter valves being out of sync. At most they affect driveability from a closed throttle. Since your bike is a 2002, I'd check your Fuel Pressure Regulator for leaks, as it's happened to quite a few bikes from that era.

Zone Television: Excellent walk through.

KaldekBoch: The 2002 onwards bikes do not use the uneven vacuum readings. All intakes need to be within 20mm Hg of cylinder #4 on these model bikes.

KaldekBoch: @Auspanyol Eh? Where do you have it connected if it's not via the 5-way?

Auspanyol: Hey Kal... Auspanyol here... the Worskshop Manual says nothing about unplugging the MAP Sensor electrical connector... I didn't and got excellent results... either way the thing is no longer connected to the starter valves via the 5-way vaccum-line connector so it isn't receiving and info vía that tube...

ViperViper6: Good for all to know this difference between model years... thx for confirming!

nekron101: Thank's mate, good video. I'm to friggin old to do that sort of stuff, but good to know when I take it to the shop (No, not a Honda Stealership). A lot of forums talk about getting this done, now I know.

niceboyandy: You really know your s**t man, great vid. Subbed.

KaldekBoch: Could be the starter valves or possibly your fast idle wax unit isn't adjusted far out enough. A good way to test is to crack the throttle a tiny (and I mean *tiny*) bit the next time you try a cold start. If the bike fires right up with a slightly open throttle it means the bike wants more air. When the bike eventually starts cold - does it hold a high idle (above 1,500rpm) or does it want to stall until it warms up?

ViperViper6: The 98-01 Service Manual states to set #3 20 mmhg lower than #1 and set the #4 10 mmhg lower than #1, then confirm idle speed still 1200 rpm +/- 100rpm. Did you not do this for some reason? Did it really change to all at same vacuum from my generation to yours? Better check!

villho: Thumbs up for doing such informative videos!

Brett: Great video. I've recently had an issue with my 2002 where there is a popping noise from one exhaust while at idle, and my MPG dropped to 28. Could this be caused by the starter valves being out of sync?
Rating:
Synchronising the starter valves on 6th-generation VFR800 4.9 out of 5

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Synchronising the starter valves on 6th-generation VFR800