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[napalm]

I have had starting issues with my 2008 SEUC, since I got the bike it seems.  At times, not every time when I go to hit the start button, the starter engages and the whole engine sounds like it is going to BLOW!!!!! Terrible sounds....sometimes it just doesn't fire up...cranks and then the starter disengages....had it back to the dealership three times.....was told they could not duplicate the problem....I have to admit it does not happen all the time, random.

I picked up the scoot last week and went to start it in the dealerships service area....crack, bang & XXZZCCKKK!!!

It would not start after three attempts, all service mechanics and the serevice manager's heads turned....I just said, that's what I am talking about!!!!  They had just replaced the starter clutch..I took the bike home, because we had a ride to go on...no problems....

The HD Rep was going to visit the dealership the following week and needed to see my scoot because I was complaining about a paint issue on the front fairing that has been going on for over a year....no more patience on my part....starting issue occurred while he was there, but nobody really had any answers...

The service manager has a lot of wrenching turning experience and I think this became a challenge for him....he hooked up my scoot to HD's All Powerful Computer and Diagnostic Machine and started checking all the systems out....Guess what he found out?

When he called me to let me know the scoot was fixed I was relieved in two ways...first I thought it was me....and second, I was going to just get a new scoot, but then I though wait a minute...this is my second SEUC with the 110 motor...I just would be terribly stupid to purchase a third one!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

I turned off the flashing stupid ;light on my forhead and headed out to pick up the fixed SCOOT!!!

Bottom line is:  the ACRS were disabled....thats right in lay mans terms...turned off!!!!  No freaking wonder that the scoot was hard to start.

The shop stated that when you add a race tuner, it automaticall disables the ACRS and they must be reactivated.  I wonder if this had anything to do with the fact that both ACRs were replaced during the product enhancement upgrade, probably not since I had the problem previously.  Who knows...all I care about is that the scoot starts like a dream.   

If you have starting issues with the 110 motor and have had a race tuner installed, have a dealer make sure your ACRs are activated.

[Diamondback]

Thanks.

Great info.

[trapperjohn82]

Thanks for sharing this information.  Hope more read this post!

Trapper 

[AXIL]

   it took them three times to figure that out?  glad you have it fixed,enjoy.     axil

[grc]

This info about the SERT maps shutting off the ACR's has been floating around the internet for at least a year now, strange how the dealers still don't know this stuff.  Oh well, as the MoCo says, you can't believe that stuff you read on the internet, so it must be something else.

Glad to hear the bike finally starts the way it's supposed to start.

Jerry

[1abastarsmda]

So, is this a confirmed issue?  I've been experiencing starting problems intermittently since the day they first did a base map download through the SESPT.  It sounds like a starter problem followed by a little puff back through the engine. Then I'll try it again, and it works fine.  I assume this is the issue that's being discussed.  Should I mention this to the shop to check it?  What is done to reactivate the ACR's?  Is that also a download or a mechanical procedure?

[1abastarsmda]

Had the same issue. Went in for SE Super Tuner & dyno last month and the mechanic didn't turn on the auto compression release. Started fine when cold but would barely turn when hot.   

Definitely notice it more when the engine is already hot.

[grc]

My possibly erroneous understanding of the problem is that at least some of the "canned" maps that came with the S/SERT had the ACR's shut off.  If the dealer just downloaded a canned map, the ACR's were shut off.  Even if they used a canned map as a starting point and then did a dyno tune, if they didn't go into the software and turn the ACR's back on, you would still have the problem.  And then the last thing I heard was that you had to have the latest version of the software or you couldn't access the ACR setting anyway.  Like I said, I first started hearing about this at least a year ago so it's not a new problem.  I imagine one of the SERT experts on the site can set us all straight on the exact facts, as opposed to my third hand information.  Regardless, if you are experiencing a problem and you've had a S/SERT installed, you need to have the ACR's checked to make certain they are turned ON in the map.

Jerry

[AXIL]

      just click on the tuning fork, then go to tuning set up then drag the "working" over to a window and there it is. 
  ta daa!                                                                                                                                                   
                                                                                axil

[1Trickydick]

This thread caught my attention because I have had problems with my '07 SEUC.  I noticed that I was able to replicate almost the exact sickeningly dry
sounding, explosion followed symptoms you describe by doing the following.
1.  When you turn on your bike, go completely past the ignition setting to ACC (Like you were going to unlock the tour pack or something)
2.  Flip the bike back to ignition and thumb the starter.  Yes I waited for the injectors to prime and the check engine light to go off.
I could repeat this at will, but have not checked it since I installed my PCIII.
I bought my bike used and I could tell that it had either a PCIII or a SERT installed by the way to wiring harness and O2 sensor looms were out of sorts.
Three Questions:
1.  If my bike had a SERT with it's previous owner, could that have been overlooked by the techs?
2.  If I were to take the bike to the Harley shop to have this checked, would I get a ration about having a PCIII instead of a SERT?  I refuse to pay for somethign that can only be used on one bike, ever.
3.  Forgive me, but what is an ACR, and would it have been disabled again if the previous owner removed his SERT before selling?
Thanks for any advise on this!

[1abastarsmda]

I spoke to the service manager today about the ACR (that Automatic Compression Release for the person that asked) and before I could even finish, he told me that the proper way to tune with the SEPST is to deactivate the ACR before tuning, and then to reactivate it at the end.  He said that they do this first, so if any canned maps automatically did that, they would still be going in to try to deactivate it and wouldn't have to, but they still need to reactivate it when they are done.  He said there was a $3000 training class through Harley that his tuner had to attend, and this was one of the pieces of knowledge that he brought back with him.  He went on to say that it's not surprising that a lot of techs do not know this and much more, since most dealers won't put out $3000 to send their techs for proper training.  He told me that if there's a problem with starting on my bike, they would have to look for the problem elsewhere and that he guarantees that in my particular case, that is not what the problem is.  I think I would still feel more comfortable if they checked that, since people do forget to do things.  He knows I need my bike back by tomorrow, so he told me if they don't find the problem quickly, bring it back in when I'm back from my trips and they can spend more time on it.

[grc]

I spoke to the service manager today about the ACR (that Automatic Compression Release for the person that asked) and before I could even finish, he told me that the proper way to tune with the SEPST is to deactivate the ACR before tuning, and then to reactivate it at the end.  He said that they do this first, so if any canned maps automatically did that, they would still be going in to try to deactivate it and wouldn't have to, but they still need to reactivate it when they are done.  He said there was a $3000 training class through Harley that his tuner had to attend, and this was one of the pieces of knowledge that he brought back with him.  He went on to say that it's not surprising that a lot of techs do not know this and much more, since most dealers won't put out $3000 to send their techs for proper training.  He told me that if there's a problem with starting on my bike, they would have to look for the problem elsewhere and that he guarantees that in my particular case, that is not what the problem is.  I think I would still feel more comfortable if they checked that, since people do forget to do things.  He knows I need my bike back by tomorrow, so he told me if they don't find the problem quickly, bring it back in when I'm back from my trips and they can spend more time on it.

Have you ever heard the old saw about never assume, because it makes an ass out of u and me?  I think your service manager needs to learn that.  Just because he claims he knows he has to check to make certain the ACR's are turned back on doesn't mean that the person who worked on your bike actually did it.  Ask him to take the short amount of time necessary to verify the ACR operation as a personal favor to you just to ease your mind.  Or better yet, if you have the software loaded on your computer get one of the SERT experts here on the site to walk you through how you can check it yourself.

Jerry

[DESERTBEAR54]

Great Info Guys!! Off to the dealer!! I have had it with them telling me they can't dup this issue!!

[AXIL]

   you do not turn off the acr's , you turn off the knock sensor. I would not go back to that dealer.   axil

[grc]

   you do not turn off the acr's , you turn off the knock sensor. I would not go back to that dealer.   axil

That was going to be my next question, why would you turn off the ACR's to do a tune?  Now thanks to axil we have the answer, you don't.  I guess now you can either talk to that service manager and call BS, or find someone else to work on your bike that isn't as full of crap as he is.  Good luck.

Jerry