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post #1 of 18 (permalink) Old 09-29-2019, 09:29 PM Thread Starter
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Kfx 400

Need help!! My starter turns my flywheel but doesn’t turn the valves or timing chain? I checked my starter clutch and it will only turn one way by hand? I’m getting spark also. Please any advise or if someone has had this problem please message me back
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post #2 of 18 (permalink) Old 09-29-2019, 10:42 PM
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Is it making any strange noises? If it is squealing it could still be the starter clutch. Is the flywheel key sheered?

'05 Z
94mm bbk, +4 stroker, Hot Cams, Vertex piston, FMF Power Bomb header and Power Core can, KW black diamond valves/dual springs, FCR39, K&N, Elka long-travel LT fronts and rear, Houser +3, +3/4 LT A-arms, American Star pro xs chromoly tie rods, Dyna non-programable, Tusk +3 axle.
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post #3 of 18 (permalink) Old 09-29-2019, 10:44 PM Thread Starter
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No just cranking. I have the top of the head off and it’s not turning the cam or the timing chain
 
post #4 of 18 (permalink) Old 09-29-2019, 10:51 PM Thread Starter
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And the main shaft the flywheel is bolted to also turns
post #5 of 18 (permalink) Old 09-30-2019, 11:38 AM
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Is the piston moving? Pull the spark plug and check if itís building compression. If it is moving, then either the timing chain is broken or the lower timing chain gear has lost torque and come off.

'05 Z
94mm bbk, +4 stroker, Hot Cams, Vertex piston, FMF Power Bomb header and Power Core can, KW black diamond valves/dual springs, FCR39, K&N, Elka long-travel LT fronts and rear, Houser +3, +3/4 LT A-arms, American Star pro xs chromoly tie rods, Dyna non-programable, Tusk +3 axle.
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post #6 of 18 (permalink) Old 09-30-2019, 04:08 PM Thread Starter
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Ok so I just checked the piston to see if it was moving and it was. But timing chain is not!!
post #7 of 18 (permalink) Old 09-30-2019, 06:20 PM
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Pull the side cover on the other side. The lower timing chain gear will tell you your problem. It has either come off, teeth stripped, maybe broken chain guide, or broken chain.

'05 Z
94mm bbk, +4 stroker, Hot Cams, Vertex piston, FMF Power Bomb header and Power Core can, KW black diamond valves/dual springs, FCR39, K&N, Elka long-travel LT fronts and rear, Houser +3, +3/4 LT A-arms, American Star pro xs chromoly tie rods, Dyna non-programable, Tusk +3 axle.
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post #8 of 18 (permalink) Old 09-30-2019, 09:32 PM Thread Starter
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The nut on the bottom gear of timing chain had backed off. I tightened it back up but need to put back in time.
post #9 of 18 (permalink) Old 09-30-2019, 10:14 PM
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Cool, I figured. Thereís a sticky in the maintenance section of how to do it. Remember to use the line next to the T on the flywheel, not the actual T itself.

'05 Z
94mm bbk, +4 stroker, Hot Cams, Vertex piston, FMF Power Bomb header and Power Core can, KW black diamond valves/dual springs, FCR39, K&N, Elka long-travel LT fronts and rear, Houser +3, +3/4 LT A-arms, American Star pro xs chromoly tie rods, Dyna non-programable, Tusk +3 axle.
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post #10 of 18 (permalink) Old 10-01-2019, 07:54 PM Thread Starter
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I timed it step by step and it cranks but won’t start. I don’t think my battery is fully charged but it should start right?
post #11 of 18 (permalink) Old 10-01-2019, 11:32 PM
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If you turn the engine over by hand, do you feel compression? Does it make the normal dunk-a-dunk sound when cranking? Watch the valve train as you turn it over and make sure the valves are moving as they should. Check valve clearance. Make sure your plug wire is all the way on.
Depending on where the cams stopped when that gear lost torque, the valves could have hit the piston. If one is bent, you’ll probably lose compression and the clearance value will probably be way too big.

'05 Z
94mm bbk, +4 stroker, Hot Cams, Vertex piston, FMF Power Bomb header and Power Core can, KW black diamond valves/dual springs, FCR39, K&N, Elka long-travel LT fronts and rear, Houser +3, +3/4 LT A-arms, American Star pro xs chromoly tie rods, Dyna non-programable, Tusk +3 axle.
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post #12 of 18 (permalink) Old 10-03-2019, 07:28 PM Thread Starter
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I put my hand on the exhaust and I can feel the compression. I had the top of the head off and watched the valve train and everything looked good. I could see the valves going up and down. Getting spark also and the plug smelled like gas.???
post #13 of 18 (permalink) Old 10-03-2019, 08:20 PM
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Then I would guess either the timing is off or valve clearance is out of spec. Otherwise if you have spark and fuel, it should at least attempt to fire up.

'05 Z
94mm bbk, +4 stroker, Hot Cams, Vertex piston, FMF Power Bomb header and Power Core can, KW black diamond valves/dual springs, FCR39, K&N, Elka long-travel LT fronts and rear, Houser +3, +3/4 LT A-arms, American Star pro xs chromoly tie rods, Dyna non-programable, Tusk +3 axle.
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post #14 of 18 (permalink) Old 10-03-2019, 09:19 PM Thread Starter
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I’ll have to check the valve clearance
post #15 of 18 (permalink) Old 10-04-2019, 07:12 PM Thread Starter
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Would starting fluid start it if valves are bad
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