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Motor is ticking LOUD!

This is a discussion on Motor is ticking LOUD! within the Yamaha YFM350 Raptor/Warrior ('87-Present) forums, part of the Performance /Technical category; Ok as you can read from my signature i have a cam, pistons, bored, etc. My quad hasn't been running very good. You can hear ...


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Old 09-20-2004, 11:43 AM   #1
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Default Motor is ticking LOUD!

Ok as you can read from my signature i have a cam, pistons, bored, etc. My quad hasn't been running very good. You can hear a LOUD ticking noise over my exhaust. Is it my valves? What do i do to fix it? If not what would it be? Its very annoying to hear this ticking noise and i know warriors already have a tick noise to the motor but my quad is VERY LOUD. I hope i gave you enough info. Let me know if you need more info. Thanks
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Old 09-20-2004, 11:47 AM   #2
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Adjust your valves......

Please
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Old 09-20-2004, 11:58 AM   #3
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LOL ok.

Another questions for you digg, it looks like you are running almost the same thing as me. What should my jets be at with what i have on there now and my fmf mega max 2 exhaust? Last week i did go on fmf's site and it said for my jet to be 150-152? with just the exhaust. Do you know what your fuel screw, piolet jet, needle positions are set at?
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Old 09-20-2004, 12:06 PM   #4
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I am at 2500 ft. I am running a 152.5, 3 turns out on air screw w/ factory pilot jet. The needle is one clip below the middle setting..
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01' Raptor 720, Stage 2, FCR'd
97' 250 Vitos Blaster - Big Bore Stroker
07' Rhino 660
94' Banshee T-5's, Vforce, ported, Cool Head, 2-1
06' Wolverine - Stock!
06' Rhino 450
06' LTZ 440
94' Vmax4 750, 96' 600 MountainMax
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Old 09-20-2004, 12:26 PM   #5
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Ok i'm pretty much at sea level (135 ft). So what does that effect my jet, needle? I'm not sure on which one it effects. Thanks
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Old 09-20-2004, 02:17 PM   #6
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it wil mean u can go higher jet because there is more oxygen in the air.

yah the ticking is ur vavles, do u have vavle springs, ur cam could be pushing ur vavles to far and not letting em get back intim befor u pistin hits em.
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Old 09-20-2004, 04:35 PM   #7
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I'm pretty sure i wont be the one that will be adjusting my valves since i have never done it before or seen it done. Is it pretty hard? I looked up on the warrior manual and it says a whole bunch of tools that you need. Are they ALL needed? I think valve adjustment started on page 97. I would like to learn how to work on the "brain" of the engine. I do pretty much everything else.
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Old 09-20-2004, 11:18 PM   #8
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Adjusting the valves is cake. But u have to remove lots of shit to get to them such as the front fender hood and tank cover, gas tank and lights. then ur good to go. Take the covers off then use a 10mm wrench to loosen the nut, and barely turn the center piece. Owners manual says like .0031in on intake and .007 on exhaust but go by what ur quad likes, if they still knock at those then tighten them some more.
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Old 09-20-2004, 11:20 PM   #9
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Forgot to add take your crank cover off (left side of case when sitting on bike) and make sure it's on TDC compression stroke. If it's on the exhaust stroke then both valves will be open and u can't adjust them.
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1996 Warrior-Supertrapp exhaust no end cap.
bandit a/t fronts, yfz stockers on back(love em),
K&N airfilter w/ 150 main fmf neddle on 3rd clip,
air scoops, that's it for now. For Sale-$2000

2004 YFZ 450- Big Gun full system(freebie), Razr's all around, fat series nerf bars, pro design killswitch, full skid plates. Everything else stock until I get it paid off.
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Old 09-21-2004, 09:50 AM   #10
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What is TDC compression stroke?
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Old 09-21-2004, 10:21 AM   #11
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Top Dead Center...

and TDC comes up 2 times in a cycle on a 4 stroke. So you need to find TDC of the Compression stroke..

After you get the gas tank off, and the vavle covers off. Take the plastic cover off on the stator side, there is a nut you can turn the motor over with. There is also a lil black slotted plastic plug just above the plastic cover on the motor.. Take that out.

Turn the motor over and you will see a T in the hole that the plug was in. The turn the motor over slowly and watch for the T and at the same time watch the vavles... One time you see the T the intake valve will be opening and the next time you see it the INtake valve will have closed.. You want to make your adjustment when the intake valve has closed.. This is TDC Compression Stroke..

You can take the round cam cover off too, and the mark on the cam will be straight up and come real close to lining up with its mark at the same point as mentioned above.. TDC Compression stroke..

Mxthunder has some nice pics to explain here : http://www.naylor1.com/mxthunder/cam3.html

INtake .002" -.004"
Exhaust .006" - .008"
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01' Raptor 720, Stage 2, FCR'd
97' 250 Vitos Blaster - Big Bore Stroker
07' Rhino 660
94' Banshee T-5's, Vforce, ported, Cool Head, 2-1
06' Wolverine - Stock!
06' Rhino 450
06' LTZ 440
94' Vmax4 750, 96' 600 MountainMax
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Old 09-21-2004, 11:00 AM   #12
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Very nice details diggerz.
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1996 Warrior-Supertrapp exhaust no end cap.
bandit a/t fronts, yfz stockers on back(love em),
K&N airfilter w/ 150 main fmf neddle on 3rd clip,
air scoops, that's it for now. For Sale-$2000

2004 YFZ 450- Big Gun full system(freebie), Razr's all around, fat series nerf bars, pro design killswitch, full skid plates. Everything else stock until I get it paid off.
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Old 09-21-2004, 11:39 AM   #13
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Ok, I think i will work on my warrior when i get back from camping this weekend. I know i dont have enough time before i leave to adjust the valves and get everything ready for camping. Thank you both for the info.
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