ohms verses K ohms

All to do with wiring, charging or just trying to figure out whats gone wrong.

Moderators: oldjapanesebikes, H2RICK, diamondj, Suzsmokeyallan

Post Reply
User avatar
Coyote
Moto GP
Posts: 3404
Joined: Tue Oct 21, 2008 2:41 pm
Country: USA
Suzuki 2-Strokes: GT550x2, GT750, GS1000
Location: Tulsa, Oklahoma

ohms verses K ohms

Post by Coyote »

My bike is running crappy. It sounds like it's way out of time, but the timing is spot on. I am trying to test the coils. The book says it should read 4 - 6 ohms between each pair of wires coming from the corresponding coil. I am getting a reading of 39.2 ohms on all three. My meter only has a K ohm setting. Am I actually seeing 3.92 ohms? My meter is a very old (like 30 years) Radio Shack digital meter (Micronta).
It sounds like and feels like it's only running on 2 cylinders. But after a 2 mile test run, all 3 pipes are hot. I am 99.99% sure its not a carb related issue. I had them apart about a month ago to clean the gunk from the pilot jets. Thanks ethanol fuel :evil: . After that, it ran great. This just started a few days ago.

Edit: Who is a good source for plug caps?
I was born with nothing and still have most of it left.

.
1978 GS1000C
1976 GT550 ongoing money pit.
User avatar
Coyote
Moto GP
Posts: 3404
Joined: Tue Oct 21, 2008 2:41 pm
Country: USA
Suzuki 2-Strokes: GT550x2, GT750, GS1000
Location: Tulsa, Oklahoma

Re: ohms verses K ohms

Post by Coyote »

My son brought his meter over. It has a straight ohm setting. All three checked 4.8 ohms - right in spec. I think my meter is toast. I tried to show him that my meter was reading 39.2. Now it is reading 13.9. Time to upgrade.
I was born with nothing and still have most of it left.

.
1978 GS1000C
1976 GT550 ongoing money pit.
User avatar
Suzsmokeyallan
Moto GP
Posts: 4326
Joined: Fri Oct 24, 2008 9:11 am
Location: Mostly Barbados, sometimes Florida and western Canada
Contact:

Re: ohms verses K ohms

Post by Suzsmokeyallan »

Chris, Suzuki still have those plug caps so you can get them. I bought some last month and the price isnt bad; your dealers cost will vary.
Two strokes, its just that simple.

69 Suz U70
69 Suz T500
72 Suz GT750 cafe
74 Suz TS250
74 Suz GTXVR project
75 Suz RE5
75 Suz GT750
76 Suz TS400
76 Suz GT750
81 Suz GSX1100
86 Suz RG500x2
88 Hon CR500
93 Hon CBR900RR
98 Suz GSF1200x3
15 Kaw Ninja H2
parksie
To the on ramp
Posts: 221
Joined: Thu Oct 16, 2008 6:59 pm
Country: Australia
Suzuki 2-Strokes: Suzuki t500 69,71,73, Gt500 76
Location: Canberra

Re: ohms verses K ohms

Post by parksie »

Coyote, it might be worth checking the battery in your meter.
1969 T500
1973 T500
1971 T500 (being restored)
1976 GT500 (being restored)
2012 Ninja 650
User avatar
Coyote
Moto GP
Posts: 3404
Joined: Tue Oct 21, 2008 2:41 pm
Country: USA
Suzuki 2-Strokes: GT550x2, GT750, GS1000
Location: Tulsa, Oklahoma

Re: ohms verses K ohms

Post by Coyote »

What the???????????????????? This morning I get a reading 5.9, 6 and 6.1 ohms.
I was born with nothing and still have most of it left.

.
1978 GS1000C
1976 GT550 ongoing money pit.
rbond
Yeah Man, the Interstate
Posts: 686
Joined: Mon Nov 24, 2008 12:22 pm
Location: Alexandria, La.
Contact:

Re: ohms verses K ohms

Post by rbond »

Really sounds like the caps are bad. I have seen several have the resistors fail like that, when cold very hard to start, but hot was fine. On a pressure washer had to put a non -resistor plug in to start it, run for a minute, swap back to original plug and go. Changed plug cap, now starts with OEM plug fine. It also sounds like your meter is bad too......
User avatar
tz375
Moto GP
Posts: 6204
Joined: Mon Nov 03, 2008 10:47 am
Location: Illinois

Re: ohms verses K ohms

Post by tz375 »

Chris, was the temperature the same each time you tested? Resistance goes up as temperature rises.
Post Reply