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2002 600F4i No Spark

  #1  
Old 07-06-2010, 04:20 PM
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Default 2002 600F4i No Spark

I have a 2002 600 f4i engine that I bought with the purpose of installing in a FSAE car. Right now I have everything jumped that needs to be jumped in order to start it (clutch, side stand, tip over sensor, etc etc etc). I also bypassed the anti theft wire to the ecu with a 9V battery. I am essentially hot wiring it. When I put the wires in the key on position the pump primes and then when I start it the motor cranks over and over again but I have no spark. Any suggestions I've triple checked all connections. I think I have all the right stuff jumpered. Please any suggestions would be awesome. I also checked all the fuses and I know there isn't spark cause I pulled the coil and plug and grounded to the engine. Thanks.
 
  #2  
Old 07-06-2010, 09:43 PM
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If the pump primes then you got the anti theft bypassed which would of been my first guess. If its not firing I would double check the coil wire to harness, and the crank pulse sensor wire. It's a red plug on a white wire I believe. Thats what tells it when to fire.
 
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Old 07-07-2010, 12:03 PM
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Any other suggestions???
 
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Old 07-07-2010, 09:58 PM
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I know that on the stock ign. There is a diode that is hooked to the pink wire, not sure if that's what the 9v is for but it might be somethin to look into
 
  #5  
Old 07-07-2010, 10:10 PM
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well i know that diode is more like 8 volts and i didnt think the pump would prime but it might be that the ecm tells it not to fire. try using an actual ignition switch and see if that works.
 
  #6  
Old 07-07-2010, 11:51 PM
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maybe some sort of safety switch related to the headlight? try grounding out the headlight positive?
 
  #7  
Old 07-08-2010, 08:16 AM
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I ran some tests last night with a multi-meter...I tested the ignition pulse generator and hardly got any reading at all...I dont have a peak voltage adapter from honda but I should still see .7 volts there and i'm not....Is this the issue? Where do I buy one of these?
 
  #8  
Old 07-08-2010, 10:22 AM
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ya thats what tells it when to fire. Thats the plug i mentioned in my first post. I dont know if its the same on the f4 but i have a couple wrecked f4 engines and i think one f4i engine that part might still be good. i can check for ya. otherwise you'll have to buy it from a dealer.
 
  #9  
Old 07-08-2010, 03:51 PM
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I did some research today and I think it might be the cam sensor instead... i found out that I was supposed to take the measurements in AC so let me check those...hopefully this is the fix..
 
  #10  
Old 07-12-2010, 11:04 AM
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I checked the ignition and cam pulse and they both seemed to check out fine...The only thing I can think of is it being a Bad ECU but the ECU primes the pump and spits out error codes...Could the ECU still be bad? Does anyone have a spare ECU that I could buy?
 

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