F4i - Main Forum Main F4i discussion board

out of ideas NO SPARK

  #1  
Old 07-21-2018, 04:52 PM
Junior Member
Thread Starter
Join Date: Jul 2018
Posts: 5
Default out of ideas NO SPARK

I bought a cheap 2001 F4i off a buddy who rode her into a ditch, F***ed up the plastics but everything else is fine engine cranked but no spark. I thought it would be an easy fix to build myself a stunt bike. Here is what has been done to the bike.
clean air mod
9v battery to replace diode (it works but I plan on getting a new diode eventually)
bypassed the tipover sensor correctly
kickstand sensor bypassed
start/stop switch bypassed
new wire harness
new Ignition pulse generator (to fix code 19)
new fuel cut relay and engine stop relay both click when ignition is turned on.
I was still getting code 19 after fixing the IPG, called up a mechanic who told me I had to reset my ecu to get the newest batch of codes or view the remaining codes. I did that and I get no FI light, I turn my ignition on and I get my fuel pump to prime and no FI light but no spark when I try to start her. I have fuel pressure and fuel going into the engine I just have no spark... through all of this the FI light will not come on, if I try to jump my service connector I get a solid FI light no flashes.I have tested continuity through every wire and cleaned off every connection... I have even tried to reset my ECU again and nothing has changed. I have a feeling in my gut that this means my ECU is dead... before I shell out $$$ for a new ECU does anyone have any input on what i'm doing wrong?
I am getting 12v to my ignition coils and when I crank her over it drops to 8v...
 
  #2  
Old 07-21-2018, 06:34 PM
74demon's Avatar
Administrator and MVN, March 2012/Oct 2013 ROTM
Join Date: Sep 2011
Location: socal 949/951
Posts: 8,000
Default

Did you install the ipg correctly? They will fit backwards in the cover, but won't work that way.
 
  #3  
Old 07-21-2018, 07:16 PM
Junior Member
Thread Starter
Join Date: Jul 2018
Posts: 5
Default

Just did a quick double check and it was installed correctly.
 
  #4  
Old 07-22-2018, 03:43 AM
CaBaRet's Avatar
Super Moderator
Join Date: Oct 2016
Location: Lancs ,UK
Posts: 2,519
Default

Can only add Cam pulse sensor and good battery, hate to think its the ECU
 
  #5  
Old 07-22-2018, 06:46 AM
Junior Member
Thread Starter
Join Date: Jul 2018
Posts: 5
Default

I already replaced the battery, and if i'm not wrong the cam pulse sensor is for the fuel and that's working fine...
I might add that I had codes 9 and 11 from before the crash and I did not fix those issues, could the crash have cooked the ECU and the codes I saw were just in the memory?
 
  #6  
Old 07-22-2018, 07:01 AM
CaBaRet's Avatar
Super Moderator
Join Date: Oct 2016
Location: Lancs ,UK
Posts: 2,519
Default

Dont think that 9 and 11 would stop the bike running though, can you borrow an ECU to test , I'm assuming your in the USA
 
  #7  
Old 07-22-2018, 07:49 AM
Junior Member
Thread Starter
Join Date: Jul 2018
Posts: 5
Default

i'm looking into that now, If my ECU is shot and I plug it into someones bike I wont fry anything in their bike will I? or should I borrow their good ECU and plug it into my bike?
 
  #8  
Old 07-22-2018, 08:06 AM
CaBaRet's Avatar
Super Moderator
Join Date: Oct 2016
Location: Lancs ,UK
Posts: 2,519
Default

Yes I'd plug their's it into yours
 
  #9  
Old 07-22-2018, 01:40 PM
74demon's Avatar
Administrator and MVN, March 2012/Oct 2013 ROTM
Join Date: Sep 2011
Location: socal 949/951
Posts: 8,000
Default

Originally Posted by CaBaRet View Post
Yes I'd plug their's it into yours
I would put yours on theirs.

1. If something fried yours, you don't want it to cook theirs as well.
2. The ECM being bad won't hurt anything else.
3. You know their bike works. You will know if your ECM is good or not very quickly.
4. A good ECM in your bike may not make it run. If this is the case, you still won't know what's wrong and if your ECM is good or not.
 
  #10  
Old 07-22-2018, 01:44 PM
74demon's Avatar
Administrator and MVN, March 2012/Oct 2013 ROTM
Join Date: Sep 2011
Location: socal 949/951
Posts: 8,000
Default

Originally Posted by 74demon View Post
I would put yours on theirs.

1. If something fried yours, you don't want it to cook theirs as well.
2. The ECM being bad won't hurt anything else.
3. You know their bike works. You will know if your ECM is good or not very quickly.
4. A good ECM in your bike may not make it run. If this is the case, you still won't know what's wrong and if your ECM is good or not.

Do you know if you have injector pulse?
 

Thread Tools
Search this Thread
Quick Reply: out of ideas NO SPARK


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.