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General Category >> Rubber Side Down! >> Raptor Petcock (?) question from a noob
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Message started by Big Al on 02/07/19 at 08:28:41

Title: Raptor Petcock (?) question from a noob
Post by Big Al on 02/07/19 at 08:28:41

Hey guys, been fooling with my bike some, ran into another issue today after messing with the jets again yesterday. Tried to start it up, no luck and there's fuel coming out of the exhaust pipe. It's my understanding that the factory petcock is vacuum actuated, and the Raptor petcock is gravity fed. Do I need to shut off the Raptor petcock after I ride, and turn it back on again when I want to ride again? I left it on yesterday, I'm wondering if the gravity feed is always pushing gas into the carb and that's why I flooded it out big time.

Title: Re: Raptor Petcock (?) question from a noob
Post by Serowbot on 02/07/19 at 09:10:01

It's good practice to shut the pet off,... but not really necessary.
If you have flooding with a Raptor, the float has stuck.
If you had shut the Raptor off to park, it wouldn't have flooded sitting, but would have begun flooding once you turned it on and started riding.

I only shut mine off if I park it in an enclosed space, or to work on the bike.
(the logic being, I'd rather flood in driveway than on the road)...
JMHO...

Title: Re: Raptor Petcock (?) question from a noob
Post by ohiomoto on 02/07/19 at 09:11:59

Your float needle is stuck open and you have FILLED your crankcase with gas. DO NOT START THE BIKE until you change the oil. You could do severer damage to the engine.

Turn the petcock off. This is a smart thing to do anytime the bike is going to sit for an extended period of time. For me, that means more than 15-30 minutes while others say more than a workday. You can use your own judgment on that.

Once you have fresh oil, you can try to start the bike with the petcock off and then turn it on after it's running. Then check the overflow tubes when you stop the engine. If any fuel comes out, turn the petcock off and take the carb off for further investigation.

Title: Re: Raptor Petcock (?) question from a noob
Post by DragBikeMike on 02/07/19 at 15:25:26

I agree with the advice to get that oil changed before trying to fire that baby up. Fuel pouring out of the exhaust pipe is a sure sign of a gas flooded crankcase.

Regarding petcock operation, I suggest you get yourself into a routine of religiously turning your fuel off every time you park the bike. It will become second nature, just like turning off the key. That way you eliminate any possibility of flooding it again. I imagine one could make a spectacular fire by say parking the scooter (with petcock "on") in a garage with a gas water heater.

Title: Re: Raptor Petcock (?) question from a noob
Post by justin_o_guy2 on 02/07/19 at 17:14:04

If gas went into the cylinder and drained into the crankcase, it flushed oil off the cylinder walls.
Drain the oil, let the motor Breathe. Allow gas to evaporate.

Title: Re: Raptor Petcock (?) question from a noob
Post by batman on 02/08/19 at 07:05:56

If you have a stock air box and filter ,you should also check and drain it ,as fuel may have run out of the carb in both directions.

Title: Re: Raptor Petcock (?) question from a noob
Post by justin_o_guy2 on 02/08/19 at 13:43:19

383B2E373B346E625A0 wrote:

If you have a stock air box and filter ,you should also check and drain it ,as fuel may have run out of the carb in both directions.

Imagine eating seven eleven sushi.

Title: Re: Raptor Petcock (?) question from a noob
Post by Dave on 02/08/19 at 17:33:25

302F292E33340535053D2F23685A0 wrote:

Imagine eating seven eleven sushi.

I really don't want that vision in my head. :-X