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Old 03-31-2015, 02:19 PM   #1
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Default really need some help guys(can't start coils turning brown)

Ok so i got my ms2 in, but i can't get it to start. I am starting to get really frustrated and need some pointers. with this my best attempt reached 950ish and i thought it was going to start. my toyota coils are turning brown like they are getting to hot. I have my settings at 3.5 cranking and 2.1 normal. i am afraid that im going to blow one of the coils. they make a wierd buzzing sound when first turning the key on. any help would be really appreciated at this point

thank you

p.s. included said best attempt
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File Type: msl starting.msl (50.5 KB, 31 views)

Last edited by dannymo; 03-31-2015 at 02:48 PM.
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Old 04-01-2015, 02:24 PM   #2
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The coils getting hot suggests something's wrong with the spark output - how is that set up? What voltage does the spark output put out with the key on on and engine off?
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Old 04-01-2015, 04:57 PM   #3
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ok i have the 4 channel board (jbperf), i have a switch 12v and a ground. i have my tach wires grounded and i have my triggers from the board. i have hooked my spark tester to them and used the test option in TS and i get no spark. spark output? you talking about the trigger?
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Old 04-01-2015, 09:36 PM   #4
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i think i just fried all my coils :(. idk what i am doing wrong. i have tested all my triggers and they tested fine. they stay at 5v and the drop to zero during the pulse. i have my setting dwell at 2.1 and 3.5 cranking. and have 12 volts going in and a good ground. i have spark output going low
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Old 04-01-2015, 09:48 PM   #5
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Quote:
Originally Posted by dannymo View Post
i think i just fried all my coils :(. idk what i am doing wrong. i have tested all my triggers and they tested fine. they stay at 5v and the drop to zero during the pulse. i have my setting dwell at 2.1 and 3.5 cranking. and have 12 volts going in and a good ground. i have spark output going low
That does NOT test fine. You should not have 5V constant on your ignition coil triggers. Most likely your spark output is inverted from where it should be.
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Old 04-01-2015, 09:57 PM   #6
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well **** that sucks. i have checked my board and everything looks correct. is there a setting in TS?
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Old 04-01-2015, 10:32 PM   #7
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Quote:
Originally Posted by dannymo View Post
is there a setting in TS?
There's one big one, and that's the spark output polarity:



For Megasquirts built to the conventional specification, this setting should be "Going High." This tells it to keep the output low (off) until it's time to dwell the coil.

The only time this should be "Going Low" is if you're using a non-standard spark output circuit which is inverting (technically double-inverting), such as the one I devised several years ago to cure the power-on-pop on the MS1.
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Old 04-01-2015, 11:09 PM   #8
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well that is exactly what is going on. thank you so very much this should be my last piece of the puzzle i need to get this thing running!... well until i get some new coils lol
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Old 04-02-2015, 08:07 AM   #9
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Quote:
Originally Posted by dannymo View Post
well that is exactly what is going on. thank you so very much this should be my last piece of the puzzle i need to get this thing running!... well until i get some new coils lol
it;s certainly one piece.
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