Dyna s ignition testing

[steg]

How would i test a Dyna S ignition as bike is only firing on 2 & 3 cylinders?

[Guest]

What kind of bike?? Assuming it's a Suzuki GS, then:

I would first check the left coil. The left one (sitting on bike) fires 1 & 4, the right fires 2 & 3.

Are they stock coils or aftermarket? With the ignition off, check the ohmns across the primary (12V leads into coil) - should be approx. 5 ohmns for OEM, 3 ohmns if using the green Dyna coils. Then check the secondary (plug wire to plug wire) - should be approx. 35K ohmns for OEM, 20K for Dyna coils...

If the secondary coil test shows bad, I would check the plug caps next, as these are a very common place for failure.

Tell us what kind of bike & set up you have & we can give you more advice.

Good luck,

Mike

[Agemax]

gotta be a connection problem or a coil fault if its 1 and 4 not firing.as mike says, check your coil is ok first or if you havent got a meter to test it swap the plug leads from 1+4 with 2+3 and then see if it fires on 1+4 instead of 2+3. check all connections are good first

[steg]

Thanx mike for reply,

It is a GS1000 chop fitted with Dyna Coils & Dyna S ignition.
Have tested coils & checked coil wires & they seem ok. Therefore looking for test on the Dyna module itself. One coil was not working but swapped with a working one to no avail
thanx again

[steg]

Thanx Agemax,
i think it is the Dyna S module so need a test to test it to see if this is the problem.
Thanx again

[Agemax]

Thanx Agemax,
i think it is the Dyna S module so need a test to test it to see if this is the problem.
Thanx again

try swapping the wires that go to the coils from the dyna module over. if it then fires on 1+4 you know the dyna is at fault

[mike_of_bbg]

Have you checked their site?

dynaonline.com
go to sportbikes
click on support -> downloads
select Dyna S from the drop-down
"Dyna S ignition system testing" is the first PDF listed

[steg]

Agemax
Quote:
try swapping the wires that go to the coils from the dyna module over. if it then fires on 1+4 you know the dyna is at fault

have tried this and it dose not fire

thanx

mike_of_bbg
i will give that site a try

cheers for all your time and help
Steg

[steg]

mike_of_bbg
checked site and got exactly what i was looking for. mutch appreciated
i will keep yous all updated

thanx Steg

[Guest]

Test each coil feed from the Dyna S with the magnet facing away from the wire being tested. It should be above .8 volts.