Author Topic: Rough Idle  (Read 29270 times)

Offline saaz

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Re: Rough Idle
« Reply #100 on: January 10, 2015, 07:59:54 AM »
Those idle jets clog up very easily as they are fine. An ultrasonic cleaner can clean them out. Physically cleaning them is hard as they are so fine.

When using stronger carb cleaner make sure no rubber o rings are in the carbs as it eats them.
John
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Offline kappy5003

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Re: Rough Idle
« Reply #101 on: January 11, 2015, 09:50:18 PM »
Pulled the carbies off, again and started stripping awaiting carbie kit.

I seem to have hit a stumbling block and need some advise.

How easy is it separate say No1 and No3.

I need to access cut out valve that is between No1 & No 3 and No 2 & No 4

May as well do the job properly and replace all o rings etc.

Pics attached


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Kappy
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Offline Yorkie

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Re: Rough Idle
« Reply #102 on: January 12, 2015, 08:42:48 PM »
You may be going into uncharted territory there, not heard of anybody doing it previously.
Brian 0418937173
Manager York Motor Museum

In the shed
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1971 CB750K2
1980 XV750
1977 GL1000
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Offline kappy5003

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Re: Rough Idle
« Reply #103 on: January 13, 2015, 12:20:40 AM »
Think your right Yorkie the connecting rods appear pressed in may have to take a punt on the diaphragm/o rings are fine on the cap I can't reach.

When I sprayed cleaner in the hole that accesses this area and lot of dark/amber liquid came out, so I sprayed till it ran clear.

I don't think its an area causing the issue.
Cheers
Kappy
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Offline kappy5003

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Re: Rough Idle
« Reply #104 on: January 17, 2015, 10:43:05 AM »
Just thought I would update my progress.

Inquiries with Honda put a carby kit, gaskets and O rings at about $50 each ex Japan 2-3 weeks.

Also the air cut valve set from Honda is excess of $100.

I stubbled across http://www.motorcyclespareswarehouse.com.au/search?q=st1100 .that has Air cut valve set at $12.80 and complete carby rebuild kit at $35, includes all jets O rings and springs. handy as I lost a spring of one of the screw sets. ++ plus express post $11.50 should be here early next week ordered yesterday already posted.

Screw sets, Idle jets and slow jets are extra from Honda.

Can some confirm Aussie jet sizes the only one I can find seems to be US, that being Main jet #128 Slow jet #38.

I believe the brand from this mob is the same the mob that make the Carby,   Keihin  :think1
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Kappy
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Offline saaz

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Re: Rough Idle
« Reply #105 on: January 17, 2015, 12:27:08 PM »
Jet sizes vary a little depending on year and market, but mains would generally be #128 for Australia (down to #125 for Califoria types), slow jet most likely #38, except for Canada in 91 to 96 which was #40. A common modification was to put in a #40 jet. I used the same kit and it has everything.
John
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1996 Honda ST1100P
2014 Triumph Trophy SE
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Offline kappy5003

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Re: Rough Idle
« Reply #106 on: January 17, 2015, 05:46:03 PM »
Yes Saaz, I surprised what was in the kit, plus the cost compared to Honda stuff and more than likely is the same stuff.

The Honda parts man suggested I look on eBay which led me to another link, probably saved at least $100 and will have the parts quicker than OEM.
« Last Edit: January 17, 2015, 06:09:20 PM by kappy5003 »
Cheers
Kappy
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Offline saaz

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Re: Rough Idle
« Reply #107 on: January 17, 2015, 06:03:39 PM »
I am hoping to continue on from the Border Run to WA in early August so may be able to catch up and hopefully all problems solved  :beer
John
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Offline kappy5003

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Re: Rough Idle
« Reply #108 on: January 17, 2015, 08:07:47 PM »
cool :thumbs
Cheers
Kappy
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Offline kappy5003

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Re: Rough Idle
« Reply #109 on: February 14, 2015, 08:34:07 PM »
Just an update.

Carby kit in each carby,stayed with same main jet as the replacement was #38 stay with the #40.

Replaced slow jet #128.

On installing the screw set I set it at 2 turns, as all info I could find was 2 1/2 turns which appears to be for US models and 1 7/8 which seams to be for Canadian models. Figures I can always fine turn that later if needed.

Ignition after a few cranks she started and fired on all 4 Yeeha, some minor balancing and smooth as silk.

Couldn't resist so small run down the drive, all good did a small video but couldn't load here so its here
https://www.facebook.com/wayne.kaplin

So now a good clean and re assemble.
Cheers
Kappy
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Offline Yorkie

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Re: Rough Idle
« Reply #110 on: February 14, 2015, 09:20:20 PM »
Great news Kappy, congrats on a job well done. :thumbsup
Brian 0418937173
Manager York Motor Museum

In the shed
1999 ST1100A
1971 CB750K2
1980 XV750
1977 GL1000
FR#720
CMRCWA #133
York,WA

So at what age does this "old enough to know better" kick in?
I believe in the "hereafter", every time I go to the shed I have to think "what am I here after"
 

Offline Abe

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Re: Rough Idle
« Reply #111 on: February 15, 2015, 06:15:41 AM »
 :clap :clap :clap :clap, excellent result.
At my age " getting lucky" is remembering what I came in the room for ;)

:wht13      Cheers Dave
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Offline Gadget

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Re: Rough Idle
« Reply #112 on: February 15, 2015, 07:56:18 AM »
:clap :clap ++
Cheers,
Gary
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Offline Wombat

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Re: Rough Idle
« Reply #113 on: February 17, 2015, 10:06:55 AM »
great work Kappy.  :runyay Just got my Stead back together after maintenance so hope to see you on the road sometime.  :grin

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Offline kappy5003

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Re: Rough Idle
« Reply #114 on: February 22, 2015, 03:52:48 PM »
Saturday morning and all back to together apart from screen waiting for some clips to arrive, could resist the urge to take a run into town, as I needed to to fill the tank after fiddling and adjusting.

Nice feeling to be back on two wheels again, even went alright on the 4 k's of gravel I have to negotiate to get the black top, was wporth doing new fork seals and new oil.

Thought I'd detour to the Gull before going into town and as I pull in there's 3 ST,s parked and there's Yorkie,Wombat and Pezz.

So after a short chat they continued off to farther horizons and I headed into town for a Cappuccino.

On my way home I decide to record part of my trip. After I set up video I start AnnaSTasia and I notice a weird mechanical noise evident at start of video any clues, however when I get home and park up noise seems to have gone, seems to have come in when engine is warm, although when cold I can hear sorta tappety sound not sure.

http://s1201.photobucket.com/user/Kappy5003/media/P2210346_zpse5frx4e8.mp4.html?o=0

Also discovered that the front brake doesn't seem to be releasing, brand new rotors and pads, not sure that is actual prob, am I gonna have pull the calipers apart?????
« Last Edit: February 22, 2015, 07:37:20 PM by kappy5003 »
Cheers
Kappy
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Online Brock

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Re: Rough Idle
« Reply #115 on: February 22, 2015, 04:49:13 PM »
No access to the video, wrong permissions I guess.
Brock
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Offline kappy5003

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Re: Rough Idle
« Reply #116 on: February 22, 2015, 06:14:59 PM »
I've changed the video site, should be visible now.
Cheers
Kappy
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Online Brock

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Re: Rough Idle
« Reply #117 on: February 22, 2015, 06:25:54 PM »
Cant find it Kappy, just takes me to you facebook page
Brock
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Offline kappy5003

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Re: Rough Idle
« Reply #118 on: February 22, 2015, 07:38:20 PM »
Cheers
Kappy
Growing old is inevitable, growing up is optional.
STOC #6677
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Online Brock

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Re: Rough Idle
« Reply #119 on: February 22, 2015, 08:38:56 PM »
 :runyay

It is a bit rattley, mine does that some times as well. It may need a carb ballance, or a good long run to blow the cobwebs out.
Brock
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Offline kappy5003

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Re: Rough Idle
« Reply #120 on: February 22, 2015, 08:43:47 PM »
I did a carb balance I will do again before I return carb tool to Yorkie.

Plus I set the screw set at 2 turns cos not sure whether 1 7/8 or 2 1/2 were correct.
Cheers
Kappy
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Offline saaz

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Re: Rough Idle
« Reply #121 on: February 23, 2015, 08:25:32 AM »
Mine can be a bit rattley as well, if idle speed is below 100rpm. Clutchg in solves most of it, but there is a bit of noise from a loose cog on the left camshaft, some slight play which is not unusual. It has been the same for the last 140,000kms or so, so is not a worry.
John
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1996 Honda ST1100P
2014 Triumph Trophy SE
Ozstoc, STOC #7239, Farrider #461 Ulysses #061681, IBA #59143 and some others
 

Offline kappy5003

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Re: Rough Idle
« Reply #122 on: February 23, 2015, 11:20:41 AM »
Sound seems to come from left front corner.

Having just replaced front rotors and new pads,has any one experienced front calipers, seems mainly left not releasing.

So much so that when moving backwards, ie parking or pushing forward is real hard work.

Also be heard squeaking when riding at slow speed, evidence of pads rubbing on rotors
Cheers
Kappy
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Offline Biggles

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Re: Rough Idle
« Reply #123 on: February 23, 2015, 01:13:45 PM »
Having just replaced front rotors and new pads,has any one experienced front calipers, seems mainly left not releasing.

So much so that when moving backwards, ie parking or pushing forward is real hard work.

Also be heard squeaking when riding at slow speed, evidence of pads rubbing on rotors


There's a whole thread on the subject here:

http://ozstoc.com/index.php?topic=8711.msg101505#msg101505

More here:

http://ozstoc.com/index.php?topic=7329.msg84106#msg84106

and there's an even longer one if you keep searching.
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Offline kappy5003

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Re: Rough Idle
« Reply #124 on: March 02, 2015, 12:35:45 PM »
Hi Guys
Just an update.

Think I sorted the brake jamming, cleaned up around the caliper piston now releases.

Went for a run to Narrogin and back yesterday to clean out the pipes so to speak.

Although the brakes are not binding now, I noticed something of a vibration at almost stopped, just wonder as I did the forks recently whether the anti dive has anything to do with that.

Now that I fixed the brakes, i now notice the handling around 120 upwards not as stable as before, seemed OK last week when I went into town :||||

Anyway on the carby, On my way to Narrogin noticed power not as smooth as I'm used to, seems lacking. Anyway the same rattly noise still there so I return home and let everything cool off, then decide to remove a spark plug either side to compare colour after approx 200km.

The one on left is from right hand side and the one of the right the left side slight difference in colour. All 4 plugs are quite new.

Then pulled out air cleaner and did quick balance check, seems as though a little out even though did before.

Later in evening I started her when cold and noticed popping from carb inlet.

This morning started again real cold and same popping. So mid morning I pulled off filter housing and and run engine to operating temp maintsing around 2000rpm and again balance carbs, checking and double checking.

Reduce to idle and engine temp around half and now i notice running quite smooth and engine doesn't seem as rattly. I wonder ???
Cheers
Kappy
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