Can you test DVA with engine running?

4barrel

Seaman Apprentice
Joined
Nov 22, 2007
Messages
46
Got a boat that runs one day not next.
Today I was checking DVA not running.
Can I check the DVA while the engine is running for the the trigger DVA & stator test.? Using a DVA adapter?
 

jonesg

Admiral
Joined
Feb 22, 2008
Messages
7,198
Re: Can you test DVA with engine running?

Its got to be a lot easier to find faults when the engine will not fire.;)
 

4barrel

Seaman Apprentice
Joined
Nov 22, 2007
Messages
46
Re: Can you test DVA with engine running?

I know it helps when it isn't runnig but f it is running that day can I see what the DVA values are on a "good day" by reading them while running.
So far my prob seem to be starter or cranking related (not spinning fast enough)
Got it running with different battery first shot, it spun faster.
 

jonesg

Admiral
Joined
Feb 22, 2008
Messages
7,198
Re: Can you test DVA with engine running?

yep...thats the problem , it has to spin 300 rpm or it will not fire.
 

4barrel

Seaman Apprentice
Joined
Nov 22, 2007
Messages
46
Re: Can you test DVA with engine running?

I know all the above ..... except "Can I test the DVA with engine running When it is running"
Can someone answer that question please.
I need to return the tester I borrowed soon and still dunno if you
"Can test the DVA with engine running When it is running"
So I hope someone will help me out here.
 

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: Can you test DVA with engine running?

If you MUST check it when running and I don't see why, You can buy clamp type probes that go around the wire and pierces it. Then hook your meter to them so you can get a reading when running. Caution, any time you do that you may have a corroision prob with wires later on. I've got two of those probes in my tool box. Used to use them for anything not marine related.
 

jonesg

Admiral
Joined
Feb 22, 2008
Messages
7,198
Re: Can you test DVA with engine running?

Piercing probes, seal the pin holes later with liquid eletrical tape.

I find it easier to stick the probes down the back of connector plugs.
 

petryshyn

Commander
Joined
Oct 3, 2001
Messages
2,851
Re: Can you test DVA with engine running?

You are less likely to spot a problem while running. Its a long drawn out explanation....check it while at cranking speed.....
 
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