Rough Idle

[Aj1300]

Kappa, try spraying some carbie cleaner around your carbies  and hoses if the rpm increases you have a leak some where,
Cheers Adam

[kappy5003]

Well guys I did it, Pulled the carby today quite easy really, four screws, disconnect choke, disconnect fuel line.
Once I pulled the carby out I think I found found my coolant leak seems there's a housing attached to top of block that's connected to metal pipe.

Also observed hose to thermostat is a bit iffy.

Pulled one float cover off a bit of dirt in there also quite a bit of dirt in the fuel from the float chambers, doesn't seem to bad but how much dirt does it take to mess with carbs.

Looking into intake of cylinder No 1 I observed a little more carbon on the valves.

Pic 1 A lever around carby and pop she's out.
Pic 2 A bit of dity in fuel from floats
Pic 3 Float cover is a bit dirty
Pic 4 Think I found my coolant leak, any clear what housing is on top of block, is there a seal there?
Pic 5 Another pic of valley showing possible leak at hose.

[Yorkie]

I would suggest replacing the 2 hoses under the carbs while you can get to them, they have been known to leak and no point going back again.

[kappy5003]

Yes Yorkie, was gonna ring for a quote tomorrow.

Also need the o ring for water cover in the centre.

I was a bit timid about taking out carbs but as long as I  don't fiddle too much with adjustments all should be OK.

Also in the process of re painting the front wheel so getting closer.

[alans1100]

Your housing in picture 4 is related to the water pump. The LH radiator hose connects to the other end of the pipe that comes out of it
The little elbows tend to be more of an issue on earlier years as they tended to crack. Mine were ok at timing belt change but I put new ones in anyway but the hoses were on their last legs.

  I seriously do not know how anyone can use anything like a tab in place of a PC or a laptop other than as a temporary thing. Viewing stuff online is ok but responding to comments is painfully slow. ...... back to topic.

Sent from Samsung 10.1 tab whilst I'm in bed getting over a virus.

[kappy5003]

Progress update.

Bike stripped pretty bare, bit scary

Well I've stripped the carby and all of it has been thoroughly cleaned quite dirty in parts,

The pilot jets from No 2 & No 4 were a little blocked..

With everything off I observed the butterflies on No 1 & No 4 are slightly open is this a sync thing, however the butterfly is open at what would zero throttle ,should that be closed tight or not.

What do I mean by slightly open, when I shine torch at bottom of throttle body no light seen other end of No 2 & No 3, light is seen with same test on No 1 & No 4.

[Assassin]

The butterflies should be a tiny bit open, a very tiny bit, but they should all be the same... You will be able to adjust the butterflies by turning the idle screw up and down... If the butterflies are uneven, it would indicate a carbie balance issue...


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[Assassin]

It's amazing how much dirt accumulates under the carbies....


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[kappy5003]

On inspection the to neck for the thermostat hoses and in good condition so I wont disturb them

The water cover in the centre of the block however has a leak, have ordered a new O ring, however this has a metal pipe that attaches to the hose that connects the bottom of the radiator, the metal pipe is secured by a bolt to the block between the rear of the timing belt housing and the engine block, has any one any tricks short of removing timing belt. Pic 1 &2

In short the Carbs were in pretty Good condition just full of junk

[kappy5003]

The butterflies should be a tiny bit open, a very tiny bit, but they should all be the same... You will be able to adjust the butterflies by turning the idle screw up and down... If the butterflies are uneven, it would indicate a carbie balance issue...

Thanks Assassin, cool so I can a make few minor adjustments while the carbs are, will see if I can match them to No 4, will do a proper sync when all goes back in.

[Assassin]

Yes you can do that... If you have a couple of thou feeler gauge, you might be able to get them fairly even...  Whilst the carbs are off, cover the intake manifolds as well... One of the butterflies is a stationary one, usually number three. All the others adjust to that one...


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[kappy5003]

Progress report.

Finally got all my parts in dribs and drabs.

Re assembly is making progress,re installing the carbs was a bitch, but got em in.

New tyres,new rotors and pads and new top box.

[nate]

Like the rotors Kappy.  Where did you get those from?

Cheers!
Nate

[kappy5003]

Hi Nate

Got them of Fleabay,
http://www.ebay.com.au/itm/Disc-Brake-Rotor-front-Honda-ST1100-Shadow-VT1100-Triumph-900-/300403102042?pt=AU_Motorcycle_Parts_Accessories&hash=item45f16b915a

Probably made in china but are Aussie supplier, I think the price is right.

Will be a week or two before I see how good they are.

Cheers

[Williamson]

Hi Nate

Got them of Fleabay,
http://www.ebay.com.au/itm/Disc-Brake-Rotor-front-Honda-ST1100-Shadow-VT1100-Triumph-900-/300403102042?pt=AU_Motorcycle_Parts_Accessories&hash=item45f16b915a

Probably made in china but are Aussie supplier, I think the price is right.

Will be a week or two before I see how good they are.

Cheers

I purchased some disc rotors for the front of the CB1300 from these guys a few years back, picked-em-up from their shop in Mitcham, VIC (McKeon Road, me thinks), good to look the seller in the eyes and know where he is, rather than some email address or PO Box no.

Anyway, they were as good as the OEMs.  I was happy with mine. 

[saaz]

A few have used that style of rotor, seem to work ok. Others like the metalgear ones look more OEM.

[kappy5003]

Update

Just started her up, started quite quickly really considering carbs where dry, however can;t get her to idle.

Any obvious clues, I think I put everthing back how I found it.

Pulled carbs again as I could smell coolant and could see coolant under bike, seems running one off new hoses will need to check connections are fine.

Cheers

[Brock]

One of the vacuum hoses my be off, or the idle stop needs to adjusted a bit. By not idleing, do you mean engine stops??
 

[kappy5003]

Hi Brock,
Release of throttle engine stops

I pulled the carb again to locate leak.

Maybe radiator cap a tad loose and coolant ran down hose to valley, as all connection solid including junctions in valley that have new O rings.

Have rechecked vacuum lines I thought were all intact, cant see any obvious.had to walk away too many flies in shed.

As re connecting carby to rubber boots is a bitch, would considered opinion be to remove boots from valley, attach to carby and refit that  way?

Open to suggestions, as maybe idle issue maybe that air leak when connections.

Do float levels affect idle?

The only screw I see that is a adjustable is the screw set , 2 1/2 turns i believe. can this affect idle?


Cheers

[hobs]

had a similar problem when i put the carbys back on. thought it was a carby clogging problem or dirt in the carbys. turned out to be 2 of the rubber sleeves connecting the carby had folded at the lip and were not creating a good enough vacuum to work properly. would rough idle and need the choke to start.

[kappy5003]

Good Idea difficult to see good seal or not, will remove again and check rubber boots.

[kappy5003]

Well guys update on AnaSTasia.

After pull carbs again double check everything, check coolant leak all good.

So I lube up the manifold boots and the carbs seem to go back a little easier this time, maybe just practice.

Check all linkages vacuum lines, hold my breath Ignition blast off, still needed choke once again no idle,

So adjust idle cable and manage to maintain idle at around 1100-1200rpm.

Pull out Yorkies carby sync tool
Check No 4 which is base reading 5.5
No 1 10.5
No 3 8.5
No 2 7.5
A little bit out one would say, so I adjust all and reduce idle to normal and guess what I have idle.

However still note quite right, so for whater ever reason I stert pulling of plug leads.

Remove No 2 lead very noticeable change.
Remove No 4 lead same result
Remove No 3 lead same result
Remove No 1 and almost no change and as I pulling cap out of plug hole i notice the end of the cap arch all the way out.
So I think its fair to say lead may be faulty, all the others no arcing.
Maybe fair to say my problem all along, why didn't I check 1st don't know.
Anyway my Carbs are nice and clean .
So Yorkie please add to my list of goodies I need to pick up from you.

Cheers

[Yorkie]

Consider it added

[kappy5003]

Question anyone,once I replace suspect plug lead, is it likely I need to re assess the carby sync.

[Brock]

No need to resync, but looking wont hurt