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cycle head rebluid now the engine turn over slowly 18 Apr 2012 15:12 #516504

  • jeffecor
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I had the mechine shop go thou my cycle head and replace three bent valve. I put it back together and the engines turn slowly every be jump the battery off the car.. sometimes turn the engine gets stuck turning and i have to manual turn it. i just rebuild the starter last night everything look good with that.. i was wondering if the start clutch is going out? in side the engine. if you had these problem please help thank you.
1980 Kawasaki 750 h1 ltd

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Last edit: by jeffecor.

cycle head rebluid now the engine turn over slowly 18 Apr 2012 16:36 #516519

  • MFolks
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What shape are the related heavy duty cables going to and from the battery,starter motor,solenoid, and engine mounting bolt? If any of them are loose, or corroded, the curent path is reduced.

Battery cables can corroded internally,greatly reducing their current carrying ability. The test them, give them a flex, if they feel "crunchy" replace them with equal ofr larger size.

Welding supply stores might be able to make up new cables for you using 6 AWG welding cable. If they can't, possibly a battery shop can do them for you.
1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)

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cycle head rebluid now the engine turn over slowly 18 Apr 2012 16:39 #516520

  • TexasKZ
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Is the battery good? 13-14 v with nothing on? Are the sides of the battery bulging? If so, it's trash. If it passes those tests, a load test is in order.

Once you are absolutely certain that the battery is good, then you can begin a systematic cleaning and checking of the electrical system between the battery and the starter motor.

If the starter clutch is bat, you are likely hearing some loud crunching noises and the starter will sound like it is spinning 10,000 rpm.

See also - www.kzrider.com/forum/4-electrical/51639...urns-over-wont-start
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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Last edit: by TexasKZ.

cycle head rebluid now the engine turn over slowly 18 Apr 2012 17:22 #516529

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Since you had the head off how was the rest of the motor ?
Did you turn the motor over while the head was off to check and see that their was no other problem than bent valves ? Im sure now the compression is a whole lot higher now with a fresh valve job but motor should turn over freely

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cycle head rebluid now the engine turn over slowly 18 Apr 2012 18:22 #516534

  • baldy110
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When you put it together did you couble check the valve/cam timing? It would suck to get another bent valve.

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cycle head rebluid now the engine turn over slowly 18 Apr 2012 21:31 #516565

  • les holt
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What happened to it that caused the bent valves in the first place?

Les

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cycle head rebluid now the engine turn over slowly 18 Apr 2012 21:44 #516566

  • jeffecor
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The machine shop went thou all the valve on it and lap them in and clean the head up. He told me there was three bent valve that was the Napa machine shop.

This head was off a motor i bought so i don't know how they bent the valves.. I'm going redo my timing chain tomorrow again make sure its not having problem there...

The battery is new these year, but i even jumped the battery off the car...

It well turn sometimes and it well get stuck every now and then i have to turn it manual.. that's with the spark plug out too.

I ran the jumper cable straight to the starter
1980 Kawasaki 750 h1 ltd

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cycle head rebluid now the engine turn over slowly 18 Apr 2012 22:14 #516578

  • les holt
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Are you confident you have cam timing right? Gut feeling speaking here but I'm guessing you have bigger problems elsewhere. Hope I'm wrong! Did you happen to roll the motor over with the head off?

Les

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cycle head rebluid now the engine turn over slowly 18 Apr 2012 22:33 #516584

  • jeffecor
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i turn the motor with the head off it.. it turns fine.. the pistons was replaced last year and got maybe 6,000 them now. I'm just see what i should look at first.. If its the starter clutch i well put the other motor end back together and swap the the top end over to that motor.
1980 Kawasaki 750 h1 ltd

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Last edit: by jeffecor.

cycle head rebluid now the engine turn over slowly 18 Apr 2012 22:36 #516585

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I'm going to make a video of it tomorrow if the timing dosn't fix it and put it on youtube so i can show you guys what the problem is..
1980 Kawasaki 750 h1 ltd

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cycle head rebluid now the engine turn over slowly 18 Apr 2012 22:56 #516589

  • APE Jay
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Larry;
It is your turn to tell them about taking their heads to automotive machine shops. :laugh:

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cycle head rebluid now the engine turn over slowly 18 Apr 2012 23:25 #516591

  • jeffecor
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No this guy knows what hes doing.. hell he build the motor that was in Corvette that out ran the state troop at 202 mhp... a lot of people told me to take it there too... i think he did a good job on it.
fyi these is the second head that hes worked on for me..

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1980 Kawasaki 750 h1 ltd

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