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Author Topic: Leak Down Test Letter  (Read 6885 times)

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ultrafxr

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Leak Down Test Letter
« on: December 31, 2017, 03:37:26 PM »

Guy posted on another forum that his friend who has a 2017 SG received a letter from H-D advising him to take his bike to his dealer so they could perform a leak down test.  No further info available and he did not post a copy of the letter.  So don't know if it is legit . . . if it was unsolicited or if he'd been having problems which lead the moco to send the letter.

So just wondering if what T-Man discovered and posted about his high incidences of leak down test failure is becoming so widespread that the moco is taking action.
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Re: Leak Down Test Letter
« Reply #1 on: December 31, 2017, 08:29:59 PM »

 :zroflmao:"Moto taking action" :zroflmao: :zroflmao: :zroflmao:

ultrafxr

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Re: Leak Down Test Letter
« Reply #2 on: January 01, 2018, 08:45:53 AM »

:zroflmao:"Moto taking action" :zroflmao: :zroflmao: :zroflmao:
Yeah. That is pretty funny.


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Re: Leak Down Test Letter
« Reply #3 on: January 01, 2018, 08:49:26 AM »


By "taking action", I assume you mean taking the usual "stealth" approach to try to keep things quiet.

If in fact they have machining issues on the M8 valve seats it wouldn't surprise me.  Don't forget all the valve and valve guide issues they had in 2007 and 2008 on the TC's.

Jerry
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Re: Leak Down Test Letter
« Reply #4 on: January 01, 2018, 11:03:04 AM »

"It's normal....they all do that". :huepfenlol2:
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J.D.

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Re: Leak Down Test Letter
« Reply #5 on: January 01, 2018, 11:06:19 AM »

"10.5:1 is theoretical compression ratio.  It's pretty normal to see more like 8:1."  :vrolijk_6:
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Re: Leak Down Test Letter
« Reply #6 on: January 01, 2018, 11:27:37 AM »

"10.5:1 is theoretical compression ratio.  It's pretty normal to see more like 8:1."  :vrolijk_6:

Other than that if a cylinder has no or limited compression it will obviously fail a leakdown test somewhere the two tests are separate animals.  So what does any anticipated or actual compression ratio have to do with the MoCo's possibly sending a letter suggesting potential proactive maintenance conducting a leakdown test?
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newseultra07

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Re: Leak Down Test Letter
« Reply #7 on: January 01, 2018, 01:04:16 PM »

 :vrolijk_11: :beatdeadhorse:
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Re: Leak Down Test Letter
« Reply #8 on: January 04, 2018, 07:27:54 PM »

So just wondering if what T-Man discovered and posted about his high incidences of leak down test failure is becoming so widespread that the moco is taking action.
Can you point me to that T-Man post?  TIA
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Re: Leak Down Test Letter
« Reply #9 on: January 04, 2018, 08:20:53 PM »

Can you point me to that T-Man post?  TIA

T-Man posted a you tube video on Facebook discussing (and showing) the valve seat issue...
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Re: Leak Down Test Letter
« Reply #10 on: January 04, 2018, 11:06:36 PM »

Thanks, Scott.  Here it is for others:  https://www.youtube.com/watch?v=p-ZApNGjOuM
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Re: Leak Down Test Letter
« Reply #11 on: January 05, 2018, 09:18:22 AM »

The MoCo will do like they did with the crank runout.  They will update the spec to make everything “within tolerances” versus fixing the problem.
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Re: Leak Down Test Letter
« Reply #12 on: January 05, 2018, 09:47:38 AM »

The MoCo will do like they did with the crank runout.  They will update the spec to make everything “within tolerances” versus fixing the problem.

Yup, going from “x” amount of oil consumed per 1,000 miles, becomes “x+x” amount of oil consumed in 1,000 mile is acceptable.

And still we buy the bikes.

Ernie I still can’t believe what they did to you over that wheel.
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J.D.

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Re: Leak Down Test Letter
« Reply #13 on: January 05, 2018, 10:05:15 AM »

It seems this is Harley's current issue resolution process:

1. Deny there is a problem.  Tell all customer's either their issue is normal (they all do that), or that their aftermarket modifications voided their warranty.
2. Wait for aftermarket to "prove" there is an issue and/or threat of class action lawsuit.
3. Send out letter to gather information.
4a. If issue can cause serious injury, issue a recall; or
4b. If issue does not pose significant potential safety threat, issue new spec based on information gathered so vast majority of claims fall under new established parameters.
5a. If no safety issue, wait for aftermarket to develop a real fix; or
5b. Create a Screamin' Eagle upgrade kit at customer's expense (parts + labor) to "get to the upper range" of spec.
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mark

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Re: Leak Down Test Letter
« Reply #14 on: January 05, 2018, 08:31:50 PM »

How in the world can a billion dollar company that's produced bikes since 1903 not be able to produce an engine without a plethora of problems?  M8 oil pump/sumping problems and now bad valve seats.  Meanwhile, Polaris has apparently produced bulletproof engines for their bikes...since 2014. 

Perhaps the MoCo should use the "Revolution" approach and just farm out engine development to another entity. 
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