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Old 08-11-2012, 05:42 PM   #1
sonoradirt OP
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Pissed 1996 XR650L valve problems

Well hello everyone, First off Im having problems lining up the TDC mark "T" with the little hash mark in the inspection hole. I can get it to line up with the F mark but when I turn it CCW a little more it will "jump" past T and I can stop it. I have seen other people do valves and their rotor is smooth and doesn't "jump". Very frustrating. I just bought this bike knowing that it had problems but it is in great shape cosmetically and has very low miles, only 4000 miles. The PO said that he had the valves adjusted by a friend and then the problems started. He thought it might have skipped the timing chain on the sprocket. Why cant I line the T mark up? Im near it but halfway past the F mark to the T mark it kinda jumps past it. Thanks in advance
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Old 08-11-2012, 05:48 PM   #2
ThumpnRed
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Did you pull the spark plug out?
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Old 08-11-2012, 05:55 PM   #3
sonoradirt OP
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yes i did
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Old 08-11-2012, 06:45 PM   #4
elsalvadorklr
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Quote:
Originally Posted by sonoradirt View Post
Well hello everyone, First off Im having problems lining up the TDC mark "T" with the little hash mark in the inspection hole. I can get it to line up with the F mark but when I turn it CCW a little more it will "jump" past T and I can stop it. I have seen other people do valves and their rotor is smooth and doesn't "jump". Very frustrating. I just bought this bike knowing that it had problems but it is in great shape cosmetically and has very low miles, only 4000 miles. The PO said that he had the valves adjusted by a friend and then the problems started. He thought it might have skipped the timing chain on the sprocket. Why cant I line the T mark up? Im near it but halfway past the F mark to the T mark it kinda jumps past it. Thanks in advance

this is normal man

all you do when you take out the plug is not fight against compression

some tricks you can use to line up and not have the rotor/flywheel move are:

1. put bike in a high gear on a stand, then using the wheel you can rotate the engine to your desired mark. then just keep the chain taight and your good

2. use a long socket wrench on the rotor bolt and then tape the socket in position when the t is at the mark

there are others but these are the easiest for me

cheers
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Old 08-11-2012, 06:52 PM   #5
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I will try those out. Thanks alot
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Old 08-11-2012, 07:21 PM   #6
mcma111
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Anywhere between the F and T is fine for adjusting the valves. Being a few degrees of is nothing to worry about. All you want to do is be on the heel of the cam lobe.
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Old 08-11-2012, 07:21 PM   #7
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I just put the bike in 1st gear & roll it until I see what I want... usually just takes a bump either way
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Old 08-11-2012, 08:26 PM   #8
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ok I tried just about everything and the lobes are down at the F mark. I cant get to the T mark without it jumping past but I will just try to adjust the valves where it is. the cam sprocket looks like its where it should be, almost level with the mating surface, a little off but its not all the way to the T mark so it looks good. Im worried that the cam chain skipped down below but Im not sure how to check. that is without pulling off the right side cover. Im just going to put it back together and adjust the valves.
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Old 08-11-2012, 10:29 PM   #9
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Are you using a ratchet on the crank bolt? Instead, use a long breaker bar with a socket and hold it tightly when you get close to the correct mark. The socket won't turn on the breaker bar, so one should be able to turn the crank to the correct position.
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Old 08-12-2012, 04:47 PM   #10
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I ended up getting it close and adjusting the valves but there is something else wrong with the motor. You can hear clunking of metal when you try to start it. Somewhere below the valves like the piston maybe. Off to the stealership it goes.
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Old 08-12-2012, 05:46 PM   #11
kirbi69
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take it apart youtself!!! its easy i just took mine apart the other dayfor the first time
i was nervous but with some patience. a manual, and this website i fixed it like new. runs great no!!!!!
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Old 08-12-2012, 05:49 PM   #12
mcma111
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I'm kinda close. Pull the motor and bring or send it to me.

And I'm hell of a lot cheaper than the stealership.
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87 Harley FXRS-SP ~ 06 KTM 625 SMC ~ 72 Honda CB750/915cc ~ 92 XR600/654cc ~ 95 XR650l/675cc ~ 03 CRF450r ~ 05 CRF450x ~ 02 XR650l/675cc ~ 86 YZ490 ~ 93 YZ80 ~ 93 XR650l Project
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Old 08-12-2012, 06:23 PM   #13
sonoradirt OP
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Quote:
Originally Posted by mcma111 View Post
I'm kinda close. Pull the motor and bring or send it to me.

And I'm hell of a lot cheaper than the stealership.
When are you available Steve? I can drop it of in a week or so and pick it up after the first if that's alright. Where in SF are you located?
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Old 08-12-2012, 08:15 PM   #14
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PM sent
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BMW's
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87 Harley FXRS-SP ~ 06 KTM 625 SMC ~ 72 Honda CB750/915cc ~ 92 XR600/654cc ~ 95 XR650l/675cc ~ 03 CRF450r ~ 05 CRF450x ~ 02 XR650l/675cc ~ 86 YZ490 ~ 93 YZ80 ~ 93 XR650l Project
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Old 08-12-2012, 08:38 PM   #15
kirbi69
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awww steve you could of have at least encouraged him to do it himself first.... but then again, there is no telling whats wrong with his motor.... i think he just conned you into fixing it for him for cheap :p
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