How to test a coil?

[sledstew]

I have a 4.3 liter and was wondering if there is any way to test a ignition coil.

 

[Reel Poor]

Re: How to test a coil?

Yes there is.<br /><br />Year, make, and model please?

 

[sledstew]

Re: How to test a coil?

1988 Lund baron 2100, 4.3 liter v6 /cobra outdrive

 

[Reel Poor]

Re: How to test a coil?

Another question ,does a boat require more fuel in gear than out of gear in nuetral? Im going to check the pressure on my fuel pump and see if thats it, If I remember right I believe it should have 7lbs of pressure.<br /><br />--------------------<br />Jake

What was the results of this test?<br /><br />Jake your problem sounds like a fuel supply problem.

 

[Chris1956]

Re: How to test a coil?

Jake, The classic test for any ignitiion coil is:<br />No continuity between primary winding and coil case<br />No continuity between secondary winding (distributor High Voltage connection) and coil case.<br /><br />Very little resistance (1 ohm) across primary winding<br /><br />More resistance (Dependent on exact coil under test, but not infinite resistance) from plus side of primary winding to secondary winding.

 

[Rhadley]

Re: How to test a coil?

Also check it hot since sometimes a coil will fail only after heating up.