Bought A 93 Vfr750, It Wont Start Anymore

jay956 · Feb 3, 2009

dizzy said: ↑

Your bike should start fine in the 40's. Now if it were single digits or teens...and you hadn't run your bike for several weeks, that would be another thing.

RC has a point about technique though. I've usually had the best luck full enrichener, NO throttle with the older VFR's I've owned. The mixture has to be right for a good start. It may help to know that there's nothing in a 93 VFR (no accel pumps) that you can do to the throttle to allow more gas on start up. Think of the throttle as an air valve instead. If you have to open it to start the bike it's 'cause the spark plugs are on the verge of flooding or fouled with gas.

Cold weather requires RICHER mixture for starting a cold bike. My experience has been opening the throttle at all is the wrong thing to do. Or if you 'blip' the throttle prematurely the bike often kills.
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i am aware of what the throttle does, but thanks anyway.

rc24rc51 said: ↑

on a cold start i always set my choke to full on, then i hit the starter. if it fires right away and goes to high idle i leave it alone. if it cranks for more than a few seconds or coughs without starting then i crack the throttle a little bit. In either situation i dont touch the throttle or choke once it starts or it will stall. I find this is what works for me. We're not dealing with fuel injection here and different bikes under different conditions will require different starting procedures. Does you're owners manual suggest the use of hotter plugs for you're current temps?
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i only recall one suggested plug, which is whats in it. i hope its not the type of plugs. i wouldnt want to have to change them twice a year.

silverblood · Apr 11, 2009

Hey Guys. Thanks for the info. I had the same problem too. It help to get my bike back up and running. It turn out to be a spark plug. So I replace all of them. I had some fuel in the carbs when I tested them and the bike fired up with no problem.

Thanks again guys.

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Bought A 93 Vfr750, It Wont Start Anymore

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