Totally makes sense! ----- Original Message ----- From: Allen Thomas To: [email protected] Sent: Saturday, August 14, 2010 6:04 PM Subject: Re: [Nighthawk Lovers] Shut-off petcock allows fuel into crankcase????????????
Gene, I was thinking about this; I agree that it is highly improbable that the needle valves would rot to the extent that fuel would bypass them to such a great extent. Here is another more plausable scenario. the torn diaphragm in the petcock could allow fuel to pass it and drain straight down the vacuume line directly into the #2 intake runner, bypassing the carb all together. this would fill the cylinder, and fuel would eventually drain past the rings into the crank case. If you started the bike in this condition it could hydrolock the engine. Even a little gas in the oil will destroy its viscosity, and prematurely wear the berrings and transmission gears. The reason I made such a strong warning is that I think this is a new member, and he may not be aware that this condition could occur. I'd hate to see another new member loose his bike prior to getting it on the road. Let me know your thoughts. On Sat, Aug 14, 2010 at 6:03 PM, Gene Henry <[email protected]> wrote: Will someone please explain to me why the float/needle(s) in the crab(s) does not stop the flow of fuel when the engine is not running, but does when it is running? 12" of head (height of the fuel column) = about 1/2 psi. The float/needle should handle that. ???????????????????? Inquiring minds want to know. Gene -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en.
