cuts out at wot

will62

Petty Officer 2nd Class
Joined
Nov 25, 2011
Messages
103
Re: cuts out at wot

I've never used an analog meter to check peak voltage. I actually haven't even seen one in over 20 years. I've just read that an analog meter could be used. Your best bet would be to get the $26 DVA adapter in the link at the bottom of SparkieBoat's post.

From the web (if it's on the web, it's gotta be true... right?... lol)

Q: You mention both analog and digital multimeters. Aren’t digital test meters better than the old analog type?
A: In the powersports world, the analog multimeter is far from obsolete, offering several advantages over the digital multimeter, among them the ability to display trends and transient inputs. The former is important in charging system checks, the latter in ignition system troubleshooting. Neither abilities are found in appreciable strength in digital multimeters, in the absence of special attachments, whereas analog meters display them very well as-is. Analog multimeters also more often come with the high current capacity needed for charging system output tests, whereas only the more expensive digitals have this capability, and usually it has to be added through an attachment. If you can buy only one, get a quality analog multimeter. If you already have a digital multimeter, then make sure it has a 10 or 20A capacity, or build yourself an external test shunt, and get a peak voltage attachment. These things will enable it to do what an analog does normally.BR>
 

buggyman20

Seaman
Joined
Nov 8, 2009
Messages
63
Re: cuts out at wot

Is there a way to test a power pack that has been removed from the motor?
 

Haffiman

Commander
Joined
Dec 17, 2009
Messages
2,454
Re: cuts out at wot

As for link assy, use 0396667 but at a hefty price. 8 in stock at Marine Engine. If remembering right, it is a complete unit and not only the shown plastic part.
 

buggyman20

Seaman
Joined
Nov 8, 2009
Messages
63
Re: cuts out at wot

Does anyone have an idea about testing a power pack off the boat. I already have bought a link assy. Did not pay that much for it.
 

buggyman20

Seaman
Joined
Nov 8, 2009
Messages
63
Re: cuts out at wot

I have done some ohmmeter tests. Here is a question about the meters. The service manual says set the meter to Rx100. I know this is a analog meter. What would you set a Digital meter to and how would it affect the readings you get. This is the reason for that question. All of my coils show 0.7 on the dmm the book says 0.1 +or- 0.05 ohms. They were showing that reading last time it was running. The charge coil ohmmeter test was way off. My dmm would show different numbers nowhere near the 480 ohms in the book. A number would show up and then the meter would go back to 1 again. I would remove the lead and it would repeat the process but with a different number. The sensor coil ohmmeter test came out great.. I am waiting on the DVM plugs for my DMM shown in earlier posts. I will post some more later. Thanks for all the help.
 

bktheking

Vice Admiral
Joined
Jul 29, 2008
Messages
5,057
Re: cuts out at wot

If you have an auto range meter you don't need to worry about it. Usually when a meter reads 1 its over the scale indicating you need to adjust to the next scale. What meter do you own?
 

buggyman20

Seaman
Joined
Nov 8, 2009
Messages
63
Re: cuts out at wot

The specs call for 480 + or- 25 ohms. What setting should I use for the ohms settings? The meter is a craftsman. Very nice meter. What about the difference between the readings of an analog and digital?
If the manual says set it to Rx100 what would you set the digital meter on and how would it effect the readings.
 

bktheking

Vice Admiral
Joined
Jul 29, 2008
Messages
5,057
Re: cuts out at wot

It's a multiplier in the reading, if the analog scale reads 18 and it's set to x100 you add two zeros, 1800 ohm or 1.8Kohm. If it's asking for something under 1k ohm then the scale shouldn't have a multiplier, just ohm or x10 on a analog so if you read 48 you'd have 480 ohm. If you get 1 on a digital meter use the next larger scale, 1 indicated the reading is greater than the scale is set for.
 

SparkieBoat

Captain
Joined
Aug 17, 2009
Messages
3,643
Re: cuts out at wot

OHM test on outboard electronics has proven to be unreliable..DVA test are what you need to do.
 

buggyman20

Seaman
Joined
Nov 8, 2009
Messages
63
Re: cuts out at wot

I am waiting on my dva tester to come in. What should the readings be for secondary resistance on the coils if I have my dmm set at 200k. I am getting all kinds of readings. The two on the port side will read at 20k. The starboard side will not read below 200k.
 

buggyman20

Seaman
Joined
Nov 8, 2009
Messages
63
Re: cuts out at wot

according to the service manual on the test I have to do. It states put meter on Rx1 or Rx100. This is on an analog meter. What would be these same settings on a digital meter since it starts at 200 and goes up from there. I am trying to get the readings that are in the manual to make sure I get the correct specs.
 

buggyman20

Seaman
Joined
Nov 8, 2009
Messages
63
Re: cuts out at wot

i got it. just waiting on my dva to come in. any more info or tips will help. thanks
 

SparkieBoat

Captain
Joined
Aug 17, 2009
Messages
3,643
Re: cuts out at wot

a set of piercing probes will be helpful. I have a pair of alligator type clips that have a small pin inside that pierces the insulation, to be able to test with wires connected.
 

buggyman20

Seaman
Joined
Nov 8, 2009
Messages
63
Re: cuts out at wot

here are the results
Charge coil 230 volts, 464 ohms
Sensor coil 3 or 4 volts on all connections, 39 to 40 ohms on all connections
Power Pack 124 volts on #3 primary, 0 volts on 1,2,4 primary
Coils primary resis. .7 on all
Secondary resis. was all over the place. #1= .50 @ R20k
#2= .25 @ R20k
#3= 74.5 @ R200k would not read on any less setting
#4= .24 @ R2M would not read on any less

Did I miss anything? Those were the tests in the service manual. Let me know what you all think. Thanks for the help.
 

Haffiman

Commander
Joined
Dec 17, 2009
Messages
2,454
Re: cuts out at wot

Charge and sensor reads ok, powerpack out seems to read low.
 

buggyman20

Seaman
Joined
Nov 8, 2009
Messages
63
Re: cuts out at wot

Does a power pack usually go out this way? More than one primary dieing at the same time. I have not heard of that before.
 
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