Installing the dyna s ignition still 2 and 3 plugs not working

[Guest]

okay so I just installed the dyna s ignition and I have spark on all 4 but the 2 and 3 cylinder don't seem to be working the exhaust is cold. Any reason why could that be the timing be off I have no idea were the timing marks are. thank

[GS-cafe]

could be that you have change the position of the 2-3 coil trigger on the dyna plate,.. did you time the ignition like the dynatek manual says?

i had to change the no 2-3 coil trigger .. it was timed a little to late from the factory.

[trucker]

could be that you have change the position of the 2-3 coil trigger on the dyna plate,.. did you time the ignition like the dynatek manual says?

i had to change the no 2-3 coil trigger .. it was timed a little to late from the factory.

ok so now I am trying to set the timing and now I have no spark in 2 & 3 plugs for some reason i even tried put on a different coil and no spark.

[azr]

A helpful tip. Always put what bike you are working on in your first sentence. If you had spark when you first put it together and now you don't you must have messed up the timing or something, it was working.

[trucker]

Sorry 1983 suzuki gs750. long story short I did not have spark before and I figured the igniter was bad so I picked a dyna s had little spark but still ran like crap. so I pulled the wiring harness to replace all the junk wire including the wires to the coils then put back together. and still little spark so tried to adjust the timing then there was no spark could I have screwed it up that bad

[trucker]

Sorry 1983 suzuki gs750. long story short I did not have spark before and I figured the igniter was bad so I picked a dyna s had little spark but still ran like crap. so I pulled the wiring harness to replace all the junk wire including the wires to the coils then put back together. and still little spark so tried to adjust the timing then there was no spark could I have screwed it up that bad

I can't even get the timing light to flash when engine is turning I can on cylinder 1 and 4 but not 2 and 3

[JTGS850GL]

Did you verify you have 12V at the 2/3 coil?

[trucker]

Did you verify you have 12V at the 2/3 coil?

I put the meter on the black and orange wire with key on and got 8.8 and on the 1 and 4 coil I also got 8.8

[mike_of_bbg]

What are your coil primary and secondary impedances? What's your voltage at the coils (O/W wire)?

Did you start with a mechanical advance or did you retro-fit one? Fiches say that 83 750 E and ES models had no mechanical advance, Katana and T models did.

[mike_of_bbg]

I put the meter on the black and orange wire with key on and got 8.8 and on the 1 and 4 coil I also got 8.8

What was your battery voltage when you did that? 8.8V is awfully low, but is that because of loss in the wiring or a low battery from cranking?

[trucker]

I also did what the instructions said for the dyna s it said to switch the black and white wire to see if I get spark and I did not

[mike_of_bbg]

May be a bad coil too. Check the secondary impedance between the plug caps. For a stock coil should be 12-15k IIRC, plus 5k*2 for NGK plug caps or 10K*2 for stock. So like ~34k for stock coil with stock plug caps. I think - it's been a while. Anyway, the resistors in the plug caps can burn up and jack the resistance way up.

[OldVet66]

An electronic ignition will not operate at those voltages. Try a temporary jumper from your battery "+" to the coils and make sure your Dyna-S gets the same voltage and see what you get. If it works, clean up your voltage drop problem. I suspect It is not a problem with the Dyna-S if you followed directions but a dirty switch and connector problem causing a voltage threshold below the ignition's capabilities.

[trucker]

May be a bad coil too. Check the secondary impedance between the plug caps. For a stock coil should be 12-15k IIRC, plus 5k*2 for NGK plug caps or 10K*2 for stock. So like ~34k for stock coil with stock plug caps. I think - it's been a while. Anyway, the resistors in the plug caps can burn up and jack the resistance way up.

I checked that in all 6 coil packs I have laying around including the working 1 on the bike and I get no reading from any of them

[trucker]

An electronic ignition will not operate at those voltages. Try a temporary jumper from your battery "+" to the coils and make sure your Dyna-S gets the same voltage and see what you get. If it works, clean up your voltage drop problem. I suspect It is not a problem with the Dyna-S if you followed directions but a dirty switch and connector problem causing a voltage threshold below the ignition's capabilities.

So your saying run a wire directly from the battery to the coil and also run it the dyna s red wire