07 raptor starts then shuts off - Yamaha Raptor Forum
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post #1 of 9 (permalink) Old 11-21-2019, 07:40 AM Thread Starter
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Exclamation 07 raptor starts then shuts off

My raptor 700 has been sitting for five months i replaced the fuel, changed spark plug ,changed the solenoid and got a new battery. now we finally got it to start there is a knocking sound coming from the engine then the bike shuts off after like 5 seconds of idling. ive changed out the oil and oil filter also.
it is a loud knocking sound. Please helpp!
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post #2 of 9 (permalink) Old 11-21-2019, 10:41 PM
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Originally Posted by KAYDAAN700R View Post
My raptor 700 has been sitting for five months i replaced the fuel, changed spark plug ,changed the solenoid and got a new battery. now we finally got it to start there is a knocking sound coming from the engine then the bike shuts off after like 5 seconds of idling. ive changed out the oil and oil filter also.
it is a loud knocking sound. Please helpp!


loud knocking not good do you have compression run a compression test

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post #3 of 9 (permalink) Old 11-22-2019, 12:01 AM
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After the oil and filter did you bleed the oil line to the head?

What part of the motor is the knock? How loud is it? The valves will sound somewhat like a sewing machine.

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post #4 of 9 (permalink) Old 11-22-2019, 08:07 AM Thread Starter
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After the oil and filter did you bleed the oil line to the head?

What part of the motor is the knock? How loud is it? The valves will sound somewhat like a sewing machine.
The knocking is coming from the head,and its pretty loud also did not bleed the oil line to the head.
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post #5 of 9 (permalink) Old 11-22-2019, 08:08 AM Thread Starter
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loud knocking not good do you have compression run a compression test
How exactly do you run a compression test?
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post #6 of 9 (permalink) Old 11-22-2019, 08:50 PM
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How exactly do you run a compression test?
Instructions for a compression check are in your manual. You could remove the spark plug and crank the motor with a finger in the hole. It should blow out. But, that may not tell you anything. If it doesn't blow out you may have a bent or broken valve.

I would remove the cam cover and check that the cam sprocket is attached properly. Then remove the crank access plug and turn the motor over with a socket, feeling for any obstructions and watching the cam and chain.
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post #7 of 9 (permalink) Old 11-27-2019, 10:44 AM Thread Starter
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Originally Posted by dezperado View Post
instructions for a compression check are in your manual. You could remove the spark plug and crank the motor with a finger in the hole. It should blow out. But, that may not tell you anything. If it doesn't blow out you may have a bent or broken valve.

I would remove the cam cover and check that the cam sprocket is attached properly. Then remove the crank access plug and turn the motor over with a socket, feeling for any obstructions and watching the cam and chain.
im gonna post a video of what the sound sounds like
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post #8 of 9 (permalink) Old 11-27-2019, 11:04 AM Thread Starter
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Wont let me post a video
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post #9 of 9 (permalink) Old 11-27-2019, 12:42 PM
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Originally Posted by KAYDAAN700R View Post
The knocking is coming from the head,and its pretty loud also did not bleed the oil line to the head.
Bleed the oil line to the head!!

'19 Can-Am X3, RS Turbo, 172 HP, 1300x15 STU #2 paddle, Tribute front, DynaTec controller, cat delete, GTP blow off valve, custom flame wrap, Bent Metal windshield, Blazer wiper, rear window, 48in LED light bar, 14in LED light bar, GTP LED side lights, S3 shock tower brace, aluminum rear pull plate, 5K Badlands winch, dual batteries, 5ft lighted whips, Rugged radio and intercom, interior lights, rock lights, chase lights, over $200 additional switches, YES, street legal with dirt tires.
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