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map sensor question

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Old Jul 25, 2008 | 06:29 PM
  #21  
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hddave2
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From: harrodsburg
Default RE: map sensor question

do i hold the throttle open and look in the moduel to see if the injector is still spraying after i crank it..right now as it stands the bike wont run till at liest a couple of hours..once it floods it wont start for a long time.
 
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Old Jul 25, 2008 | 06:30 PM
  #22  
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From: harrodsburg
Default RE: map sensor question

it is a stock efi with 25deg injectors installed before i bought the bike new..
 
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Old Jul 25, 2008 | 09:16 PM
  #23  
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From: harrodsburg
Default RE: map sensor question

ORIGINAL: whittlebeast

Do the same experiment but without an air cleaner. I think the injectors should spray one quick shot then wait for cranking. If one just keeps shooting, you found it
&nbsp\\; i pulled the air filter off the bike and tryed to start it after it has flooded it will start but i have to crank it a few times..im running the se filter and its clean and not cloged up so i cant figure why it will start when the filter is off..im thinking that its thowing&nbsp\\;so much&nbsp\\;gas to the cyclinders, but taking the filter off it gets more air and not running so rich that it floods..does this make since.
 
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Old Jul 26, 2008 | 12:27 PM
  #24  
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Default RE: map sensor question

I would check the fuel rail pressure.
 
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Old Jul 26, 2008 | 04:31 PM
  #25  
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From: harrodsburg
Default RE: map sensor question

would i need a special tool to be able to check the fuel pressure? i think the manual says to use a HD fuel presure gauge
 
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Old Jul 26, 2008 | 07:11 PM
  #26  
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From: Indy area
Default RE: map sensor question

You have the quick-disconnect coupling on the tank outlet, right? They have an adapter that snaps onto the QD fitting, with a gauge on it. Probably be as cheap to just buy a new MAP sensor and try it, if you really suspect that is the problem. Unless you can borrow or make an adaptor, or a minute of a techs time.
 
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Old Jul 26, 2008 | 07:55 PM
  #27  
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Default RE: map sensor question

You are causing it, by interrupting the WARMUP ENRICHMENT Cycle... You are FOULING the plugs, not flooding the motor....
&nbsp\\;
Warmup Enrichment restarts when you start up a motor that is cold... Lots of fuel and little more air... If you shut down during, and then Restart, the cycle starts all over again... IE.. MORE THAN ENOUGH FUEL FOR Startup... which results in fouled plugs...
 
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Old Jul 26, 2008 | 11:13 PM
  #28  
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Default RE: map sensor question

ORIGINAL: Shovelhead Bob

You are causing it, by interrupting the WARMUP ENRICHMENT Cycle... You are FOULING the plugs, not flooding the motor....

Warmup Enrichment restarts when you start up a motor that is cold... Lots of fuel and little more air... If you shut down during, and then Restart, the cycle starts all over again... IE.. MORE THAN ENOUGH FUEL FOR Startup... which results in fouled plugs...
WOW how did you uncover and document that bust in the code?
 
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Old Jul 27, 2008 | 01:09 AM
  #29  
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From: harrodsburg
Default RE: map sensor question

ORIGINAL: Shovelhead Bob

You are causing it, by interrupting the WARMUP ENRICHMENT Cycle... You are FOULING the plugs, not flooding the motor....
&nbsp\\;\\\\\\;
Warmup Enrichment restarts when you start up a motor that is cold... Lots of fuel and little more air... If you shut down during, and then Restart, the cycle starts all over again... IE.. MORE THAN ENOUGH FUEL FOR Startup... which results in fouled plugs...
it shouldnt foul plugs every time i start or restart the bike,somthing is wrong.. its never done this before
 
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Old Jul 27, 2008 | 01:30 AM
  #30  
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glens
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From: Indy area
Default RE: map sensor question

Do the simple things first. Measure the fuel pressure. You can probably get a bike tech to check it for you for a can of soda or a cheeseburger. If the regulator is not properly bleeding off excess pressure, the injectors will be spraying way more fuel than they should. PM me when you have checked the fuel pressure. Then I will know I can look at this thread again, okay?
 
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