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1997 Ultra classic starting problem

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Old Aug 6, 2016 | 03:42 AM
  #11  
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When I get a chance I will try to pull the codes and see what I get. As for the fuel pump, when I changed the fuel filter I turned the key on and off at least 50 times to make sure the pump was actually pumping. It was fine everytime, on the times it doesn't start you can hear the pump pumping although that doesn't mean it is actually pumping. What are the chances of the fuel pump not working 1 out of ten times and not working again for hours...
 
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Old Aug 6, 2016 | 06:04 AM
  #12  
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Originally Posted by Meastly
When I get a chance I will try to pull the codes and see what I get. As for the fuel pump, when I changed the fuel filter I turned the key on and off at least 50 times to make sure the pump was actually pumping. It was fine everytime, on the times it doesn't start you can hear the pump pumping although that doesn't mean it is actually pumping. What are the chances of the fuel pump not working 1 out of ten times and not working again for hours...
Your fuel pump is fine...I had this same issue with my bike. It is very frustrating as it is an intermittent problem. Along the way I found other issues that would always make me think I had it fixed (Engine Temp sensor and Air Intake Temp Sensor) only for it to do it again, sometimes months later. The codes where not much help as it alway showed a code for and injector. After reading a bunch and I mean bunch of post, I spent the money to replaced the cam position sensor. I really didn't think that was the problem. I am thinking its a position sensor it and its electric so it should either work or it shouldn't but hey it's almost 20 years old and some of the others sensor have failed recently so why not. So while doing a top end rebuild over the winter I changed it out. I have not had a issue since. That was about 1 1/2 years and 14K miles ago. I would also check those Temp Sensors...very easy to do with a multi meter and a hair dryer.

I am sure there will be lots of guy come along here shortly and tell ya what a crap FI system you have and to get rid of it but its a relatively simple and reliable system. Just get a FACTORY Service Manual and do a little reading.
 
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Old Aug 6, 2016 | 06:11 AM
  #13  
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I will look into the various sensors. I was fairly certain it wasn't bad spark... Or the fuel filter... It's getting frustrating thinking it's fixed and a week or two later it acts up again.
 
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Old Aug 6, 2016 | 06:19 AM
  #14  
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Originally Posted by Meastly
I will look into the various sensors. I was fairly certain it wasn't bad spark... Or the fuel filter... It's getting frustrating thinking it's fixed and a week or two later it acts up again.
I know your pain! If the bike is running well when it does start, then I would almost guarantee that its the crank position sensor. It's an expensive part but its almost 20 years old so even if that's not the problem I wouldn't feel bad about making that investment. Good luck.
 
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Old Aug 6, 2016 | 07:41 AM
  #15  
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Originally Posted by Meastly
I will look into the various sensors. I was fairly certain it wasn't bad spark... Or the fuel filter... It's getting frustrating thinking it's fixed and a week or two later it acts up again.
The cam position sensor tells your coil when to spark.
That's why I told you to check the spark plugs to see if you were getting fire.
 
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Old Aug 6, 2016 | 09:52 AM
  #16  
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Originally Posted by texashillcountry
The cam position sensor tells your coil when to spark.
That's why I told you to check the spark plugs to see if you were getting fire.
and the ECM also uses the info from that sensor to controls injector timing\opening which would explain dry plugs.
 
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Old Aug 6, 2016 | 10:19 AM
  #17  
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Originally Posted by Meastly
I have a 1997 Ultra classic, fuel injected, never really had a major problem until now. About 80% of the time it will start right up after one crank, the rest of the time it will crank over and over and over but never start. When it doesn't start it could start as soon as 10 minutes later, sometimes not for hours. When it won't start if I remove the plugs they are dry, and the plugs were changed. The fuel pump is working fine, the fuel filter was changed... Not sure what would cause it to just randomly not start... Any help would he appreciated.
You are describing a CAM position sensor failure.
Do not confuse with crank sensor.
CAM SENSOR LOCATION : Right foot timer cone area ,near floor board.
Look at black wire exiting the bottom of cone.
You will see a beige sticky goo.
The beige goo is the CAM position sensor sealant melting.
Part is a harley ONLY part with the M & M fuel injection.
Part number should be 32448-95A and is about $190 USA dollars.
The new one has the black sealant.
You probably get a lot of cranking and nothing, then a lot of cranking and nothing, then a lot of cranking and nothing.
Then you get angry and wait.
Then it starts almost immediately when you touch button with almost no turnover .
It is a do it yourself type of job.
You will need the part, a piece of cut allen/hex wrench, suggest either closed end rivets or a new timer cover.
It would be easiest to just get a plain chrome timer cover for about $15 from J & P cycle unless you have a rivet gun.
It sounds exactly like a CAM position sensor failure on an M & M injected bike.
FYI a different sensor called the CRANK sensor. This different sensor "CRANK SENSOR" located at oil filter area and wire then makes a long run to computer.
That sensor the CRANK sensor goes from oil filter along left part of motor to right side and then disappears back under right corner frame area of seat.
That sensor has a connector that is black and is a push and turn connector.
The CRANK sensor can disconnect slightly and cause bike to shut down over bumps.
Put several tie wraps on that sensor.
Do not buy the CRANK sensor just use tie wraps..very easy fix for free.
People have changed the entire fuel injection system just because of this one loose connection.
Here is a link to a part finder so you can "SEE"
http://partsfinder.onlinemicrofiche.....asp?make=hdmc
 
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