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Old 08-13-2008, 04:45 PM   #1
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Default No spark, please help!!!

ive fitted a megasquirt pnp to my 1990 1.6 mx5 thats been turbod with 550 injectors, its been running ok but i was just altering the size of the injectors on the map and when i burnt to the ecu the car cut out, no when i try to start it there is no spark , ive already searched and could not find any ansers, ive not been able to test the ign amp but tested the coils and got 1.3 ohms on the primary coil and 15.3 on the secondry coils, 1.3 seems a bit high for the primary coil as in the ESM it stated that it should be 0.97 max, would this stop the spark ? please help ive got to take the car for mot on friday an its pissin me off.
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Old 08-13-2008, 04:52 PM   #2
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what specific changes did you make? can you post the before and after map?
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Old 08-13-2008, 05:42 PM   #3
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i altered required fuel in engine constants 1 , its set to 5.6 but altered it 0.1 either way to see what it did to the lambda readings,
Ive now checked the 3 wires going to the coil, got 12v on the blue which is right, also got high 11's on the other 2 wires , only using a cheap and slow volt meter though so dont know how significant these readings are,

here is my map, ive not had it propperly mapped yet as im just running the engine in,(will be when it runs anyway)
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File Type: msq okbase1.msq (34.4 KB, 54 views)
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Old 08-14-2008, 10:19 AM   #4
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so you crank and it simply doesnt catch? with 550s and your settings I'm sure you're just flooding the engine.
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Old 08-14-2008, 01:39 PM   #5
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ive had a spark plug out and earthed but that doesnt spark when cranking either, , how would you suggest altering my settings to run better? sorry im a bit dumb when it comes to this sorta thing as ive never done engine managment before, the high resistance in the primary winding on the coil is bothering me a little, could it be that this is causing the lack of spark?
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