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getting electrocuted 23 Sep 2014 09:14 #648487

  • chonus
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If I lay my fingers on the plug wires while the bike is running I feel some electricity being inducted into my hand. Is some feeling of electricity normal? its not like im getting zapped the way I would if I pulled the wire off the plug. the coil and wires seem original its a 1980 kz750 LTD 4 cyl and I just put new NGK BR8ES in it. Thanks in advance!! trying to get this old Betty up to snuff
-Dave

'82 kz305 lil bob
'82 kz1000 streetfighter project
'80 kz750/4 LTD
'02 kx125

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getting electrocuted 23 Sep 2014 09:33 #648491

  • Tyrell Corp
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The insulation breaks down over the years, new 7mm plug wire and caps is a good place to start. There is about 30 000 volts coming from those coils, but low current so unless you have a pacemaker it is fairly safe. Some modern cars run at 100 000 volts.

(Unless your hand is made of metal then it is conducted not induced)
1980 Gpz550 D1, 1981 GPz550 D1. 1982 GPz750R1. 1983 z1000R R2. all four aces

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getting electrocuted 23 Sep 2014 09:43 #648493

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Does your 80 kz750 have resistor caps like my 82 does? If so you probably shouldn't be running resistor plugs (BR8ES vs B8ES) with resistor caps as well.

If you are feeling anything on the outside of the plug wires then I'd say it is time to change them since they aren't doing their job properly.
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getting electrocuted 23 Sep 2014 11:41 #648522

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all I know is it INDUCED pain. and Im not sure about resistor caps. where might I find them? I slapped these plugs on in it after I limped into the part store parking lot.
-Dave

'82 kz305 lil bob
'82 kz1000 streetfighter project
'80 kz750/4 LTD
'02 kx125

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getting electrocuted 24 Sep 2014 07:34 #648625

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run it in the dark and see if you get a light show.

leon
skiatook,oklahoma 1980 z1r,1978 kz 1000 z1r x 3,
1976 kz 900 x 3
i make what i can,and save the rest!

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getting electrocuted 24 Sep 2014 12:16 #648639

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Your wires are leaking and should be replaced.
I prefer to go to the auto parts store and get a couple of automotive wires. Then you can also toss the expensive motorcycle plug caps as well.
1983 GPz 750
810 Wiseco, Kerker, K&N, DynoJet S3, Accel, Progressive, etc.

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getting electrocuted 26 Sep 2014 10:49 #648886

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well I put B8ES non resistor plugs in it. I don't feel anything anymore but its still not runnin right. I assumed a coil at first because the 2 inside cylinders appeared to have shut off, when I limped to a parts store. both inside exhaust pipes were cool to the touch. But Im pretty sure one coil runs 1&3 and the other runs 2&4. I dunno Im away from the bike right now
-Dave

'82 kz305 lil bob
'82 kz1000 streetfighter project
'80 kz750/4 LTD
'02 kx125

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getting electrocuted 26 Sep 2014 10:53 #648887

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One coil for 1 & 4, the other for 2 & 3
Pete
1980 LTD 1000..,1976 LTD 900, have the 1000&900 now. the rest are previous= 1978 KZ 650 B.., 1980 Yamaha XT 500..,1978 Yamaha DT 400.., 1977 Yamaha yz 80..,Honda trail ct 70.., Honda QA 50...5-1/2 hp brigs & straton CAT chopper mini bike...3-1/2 hp mini bike (WHEN GAS WAS ABOUT 45 CENTS A GALLON)!!!!
The following user(s) said Thank You: chonus

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getting electrocuted 26 Sep 2014 12:33 #648902

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probably time for some coils huh? its only got 15,000 miles but I guess the stock ones can start to suck over time... 2&3 weren't firing, and I just went through the carbs, new o rings, bowl gaskets and float valves. unlikely 2 carbs stopped at the same time then started working again without touching them
-Dave

'82 kz305 lil bob
'82 kz1000 streetfighter project
'80 kz750/4 LTD
'02 kx125

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getting electrocuted 26 Sep 2014 12:45 #648903

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If the wires are long enough from 2 & 3, switch them with 1 & 4, & see if 1 & 4 stay cool to the touch , & then you'll know It's your coil
Mlleage doesn't matter with coils, but age does
Pete
1980 LTD 1000..,1976 LTD 900, have the 1000&900 now. the rest are previous= 1978 KZ 650 B.., 1980 Yamaha XT 500..,1978 Yamaha DT 400.., 1977 Yamaha yz 80..,Honda trail ct 70.., Honda QA 50...5-1/2 hp brigs & straton CAT chopper mini bike...3-1/2 hp mini bike (WHEN GAS WAS ABOUT 45 CENTS A GALLON)!!!!

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getting electrocuted 26 Sep 2014 12:53 #648904

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Have you checked the plugs on 2 and 3? Are they wet with gas? Could they have built up enough deposits to not fire properly?...

What happened before the running problem started?
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getting electrocuted 27 Sep 2014 05:06 #648934

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2&3 were wet with gas come to think of it. I forgot about that. so yea not a carb issue. and I just bought the bike and have only ridden in 30-40 miles. the other day though it was hard to start even on full choke. eventually did then stalled. but cyl 4 was cool this time. I wish I had an infrared thermometer sometimes. the old "slap the pipe real quick" trick sucks. and the plugs weren't built up very bad at all. I just changed em on a prayer
-Dave

'82 kz305 lil bob
'82 kz1000 streetfighter project
'80 kz750/4 LTD
'02 kx125

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Last edit: by chonus.
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