runs for 2 min then cut all pwr, 2 min later fine

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runs for 2 min then cut all pwr, 2 min later fine

10 Mar 2015 19:55
#664035
Started the Kaw after 2 years after an accident, want to get back to riding. however.. after riding it for about 5 minutes all electrical shut down, absolutely nothing, checked all fuses, everything fine and then magically, electrical worked again, started, ran for 2 min, electrical gone.. waited for 5 minutes with key on and it came right back up.... scratching my head!! any Ideas? 76 Kz 900. :huh:

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Re: runs for 2 min then cut all pwr, 2 min later fine

10 Mar 2015 20:04
#664037
Welcome Ben. Was that PIC before the accident? What does she look like now?

Pull the tank... pull the seat... pull the headlight. Start looking for exposed/rubbed wires. Sounds like a dead short...
C.
79' KZ650-D2 [fsm] (Max)
83' KZ750-F1 LTD [clymers] (Kay)
82' KZ1100-D1 Specter (another project)
78' KZ650-B2a (J&H, A Project)
91' KZ1000-P (P = parts)

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Re: runs for 2 min then cut all pwr, 2 min later fine

10 Mar 2015 20:04
#664038
Hello, benvasa, and WELCOME to KZr! :)

One of the first things to inspect is integrity of the ground connection where the negative battery cable attaches to the rear of the engine. And connections of the cables at the battery posts.

Good Fortune! :)
1973 Z1
KZ900 LTD

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Re: runs for 2 min then cut all pwr, 2 min later fine

10 Mar 2015 20:07
#664039
Thanks! And she looks just the same thank god! I was in a rollover accident in a truck. I've been searching and searching for loose wires....gets old fast! lol I just didn't know if there was a certain thing that might get hot and trip something, and then ....come back on? idk.. I heard talk of something like that on my 76 sportster..

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Re: runs for 2 min then cut all pwr, 2 min later fine

10 Mar 2015 20:12 - 10 Mar 2015 20:12
#664040
Rollover? Tell more? It was in a truck and the truck went over?

How are the grip controls? Damaged at all?
C.
79' KZ650-D2 [fsm] (Max)
83' KZ750-F1 LTD [clymers] (Kay)
82' KZ1100-D1 Specter (another project)
78' KZ650-B2a (J&H, A Project)
91' KZ1000-P (P = parts)
Last edit: 10 Mar 2015 20:12 by !Seymore.

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Re: runs for 2 min then cut all pwr, 2 min later fine

10 Mar 2015 20:17
#664042
Would also check the 20A fuse and fuse connections. Sometimes a bad (intermittently conducting) fuse may look okay. And the connections at one or both ends of the fuse may be corroded.

Good Fortune! :)
1973 Z1
KZ900 LTD

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Re: runs for 2 min then cut all pwr, 2 min later fine

10 Mar 2015 20:26
#664043
Check and clean the battery terminals. Happened on my bike. That's all it was.
Steve

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Re: runs for 2 min then cut all pwr, 2 min later fine

10 Mar 2015 20:35
#664044
Seymore, I myself was in an accident, couldn't ride for quite a while, the bike was safely sitting in my garage :) Tomorrow I will check the ground, and brush the fuse connectors, probably just get new fuses too, who knows maybe they are just old as shit.. and the battery is brand new as of yesterday. I looked at a few of the connectors on the Air shifter mechanism, looked a little shoddy, I wish I knew what they all connected to so I could just disconnect the whole thing as I never use it, but somehow it is connected to the whole electrical system... :/ Thanks all, I will update on any new findings

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Re: runs for 2 min then cut all pwr, 2 min later fine

10 Mar 2015 20:39 - 10 Mar 2015 20:40
#664045
OK, Thanks Ben. Good to hear you're back on the horse...

Well, PICs of the shifter, or a manuf/model, and the guys here should be able to ID/assist.. Beside checking everything mentioned, this could be as good a place to start with the cleanup.
C.
79' KZ650-D2 [fsm] (Max)
83' KZ750-F1 LTD [clymers] (Kay)
82' KZ1100-D1 Specter (another project)
78' KZ650-B2a (J&H, A Project)
91' KZ1000-P (P = parts)
Last edit: 10 Mar 2015 20:40 by !Seymore.

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Re: runs for 2 min then cut all pwr, 2 min later fine

10 Mar 2015 20:43
#664046
couple years ago one of these was disconnected and bike wouldn't start...

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Re: runs for 2 min then cut all pwr, 2 min later fine

13 Mar 2015 19:46
#664366
Good news! Found the corroded wire, and she keeps power, Was cleaning my spark plugs and noticed a lot of gunk on top of both left cylinder Pistons, Looked in forum about possibly cleaning through the plug hole, nobody really pinned down if it was advised to put cleaner in there and let it soak up or not... Any recent suggestions to say otherwise?

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Re: runs for 2 min then cut all pwr, 2 min later fine

14 Mar 2015 04:48
#664375
benvasa wrote: Good news! Found the corroded wire, and she keeps power, Was cleaning my spark plugs and noticed a lot of gunk on top of both left cylinder Pistons, Looked in forum about possibly cleaning through the plug hole, nobody really pinned down if it was advised to put cleaner in there and let it soak up or not... Any recent suggestions to say otherwise?

Some info here:
www.kzrider.com/forum/2-engine/595224-cl...stion-chamber#643087

Good Fortune! :)
1973 Z1
KZ900 LTD

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