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Author Topic: Q,..on fuel addivtives  (Read 6646 times)

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Ridgerunr

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Re: Q,..on fuel addivtives
« Reply #15 on: January 25, 2016, 08:32:20 AM »

As Jerry points out, could be the tune, or, lack of.
Concerning additives, octane boost type additives are not needed when the motor is in good state of tune. With the breathers plumbed into the throttle body, additives such as Seafoam help keep carbon build up down. Once or twice a year, just prior to changing oil I spray Seafoam  or water into the throttle body to clean carbon. If you never have done this caution required to not spray too much into the intake and cause hydrolock.
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RJW

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Re: Q,..on fuel addivtives
« Reply #16 on: January 25, 2016, 12:12:09 PM »

Had similar problem with my 07. It turned out to be the fuel filter.
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chicoman

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Re: Q,..on fuel addivtives
« Reply #17 on: January 25, 2016, 12:35:00 PM »

More cranking fuel for the temp at startup
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longlast

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Re: Q,..on fuel addivtives
« Reply #18 on: January 25, 2016, 05:50:14 PM »

Pinging (detonation) is a result of several things working individually or in conjunction with each other.  Heat is a foremost consideration.  Whether that heat comes from higher compression, timing, fuel ratio or ambient factors is (mostly) irrelevant.  If an engine is hot enough to detonate fuel prematurely in a cylinder that's a bad thing; no matter the reason for that heat.

Octane ratings have nothing to do (directly) with engine performance or more power.  A higher octane fuel isn't in any way "more powerful" than a lower octane fuel.  The additives in a higher octane fuel are there simply to make it less prone to detonation.  So adding a higher octane fuel fuel in a tank with no tuning changes made won't get you more performance or make the bike "run" better.

HD engines have the higher octane spec not because they are high compression (in stock form) "performance" engines.  It's because of heat.  Lean fuel settings and air cooled engines.  Honestly, just between you and me (it'll be our secret) I've always thought it's also something Mother Harley at least used to do to make us feel better.

Since the common misperception has often been that the only reason an engine needs higher octane fuel is that it is some kind of a "performance" engine Harley owners could be made to feel like they were getting something hotter than a stock Evo or TC ever really was because, so the MoCo told us, we needed higher octane fuel.  Oooooh.

I was out for a few hrs today to start burning off the full tank of the fuel  I've got in it. I made a number of stops and had not a one start up issue :nixweiss: she fired soon as I hit the starter :nixweiss: Still got 8- 10ths of a tank to burn off then I'll fill it with premium

I did see that bit on the additives, when I was reading up on octane,
I don't know what, if any tuning has been done prier to my perches of the bike. In May the bike has to go in for mandatory road inspection before it can go back on the road. At that time I'll have the tuning done then I'll know were I stand with that. 

As Jerry points out, could be the tune, or, lack of.
Concerning additives, octane boost type additives are not needed when the motor is in good state of tune. With the breathers plumbed into the throttle body, additives such as Seafoam help keep carbon build up down. Once or twice a year, just prior to changing oil I spray Seafoam  or water into the throttle body to clean carbon. If you never have done this caution required to not spray too much into the intake and cause hydrolock.

I have done that in cars to rid the carbon. Hot motor high rpm water down the carb and see the brown smoke out the tail pip 8)   
« Last Edit: January 25, 2016, 05:52:24 PM by longlast »
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longlast

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Re: Q,..on fuel addivtives
« Reply #19 on: January 25, 2016, 05:58:32 PM »

Might be your compensator... any knocking noise on start up

No there's none of that
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longlast

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Re: Q,..on fuel addivtives
« Reply #20 on: January 25, 2016, 06:05:51 PM »

Longlast, All good info above about tune and octane.  I know you said only 10K on the odometer, but if those are the original spark plugs and wires, they may start to deteriorate from age.  Probably not the cause of the starting problems, but might come into play with regular running.

The '07s had a lot of compensator problems.  Has yours been replaced?

 Not by me, maybe the previse owner? I have no work records 
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Lever

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Re: Q,..on fuel addivtives
« Reply #21 on: January 27, 2016, 11:50:34 PM »

ANY UPDATES   ?
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longlast

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Re: Q,..on fuel addivtives
« Reply #22 on: January 28, 2016, 10:18:07 PM »

ANY UPDATES   ?

Up Date!
Found that Yes I was using the wrong fuel. Along with my misinterpretation of the manual regarding fuel. :-[
Have to burn off what's in the tank then see how it go's after I've filled up with the good juice. I will also be getting a tune but that wont be till around May. I'll post back on this thread the before and after readings.

 
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Ridgerunr

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Re: Q,..on fuel addivtives
« Reply #23 on: January 29, 2016, 08:05:45 AM »

 :2vrolijk_21:
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FLY-DOG

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Re: Q,..on fuel addivtives
« Reply #24 on: February 01, 2016, 02:02:55 PM »

Mine was acting similar and found out the battery was getting weak. Replaced it and problem went away.  I've also been told the automatic compression release system will do the same if its acting up?  :nixweiss:
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longlast

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Re: Q,..on fuel addivtives
« Reply #25 on: February 01, 2016, 04:55:35 PM »

Mine was acting similar and found out the battery was getting weak. Replaced it and problem went away.  I've also been told the automatic compression release system will do the same if its acting up?  :nixweiss:

The battery is 1year old HD bat. But food for thought, I'll have it checked when I get the tune done along with the (CRS)  :2vrolijk_21:

Input appreciated.
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longlast

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Re: Q,..on fuel addivtives,.. Up Date!
« Reply #26 on: February 19, 2016, 12:00:56 AM »

A thanks to all of you for your input "I'm a little wiser" now.

I've burnt off the tank of Reg unleaded till the low fuel light lit. Topped her off with the Premium unleaded which is 95 octane here.
As to date, I've been out as much as pos. weather permitting and have burnt off 3/4s of a tank with a number of stops and starts. It would seem the issues I was having was doe to the fuel. All the start ups on this fresh tank have been with out issue.

Thanks a gain guys  :2vrolijk_21:       
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