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post #1 of 16 Old 05-16-2013, 6:39 PM Thread Starter
 
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running rich

Hi guys.
I have been having issues with my rrv blade.
I bought it as a non runner last month.
Since then I have it running. After doing loads if work.. stud snapped in head. Removed. Fork seals replaced. Calipers overhauled. New full exhaust system. New tyres. New spark plugs. New chain and sprockets. And new sump plug.

The problem I have is that she is not very responsive on the throttle and does backfire if I let the throttle from mid range revs.
If I try to ride her she back fires and has no power.

I'm at a loss now.

I would have a go at overhauling the carbs but I have read the Haynes book and its not that helpful.

Amy help muchly appreciated. I wanna take her out on the road!

Thanks
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post #2 of 16 Old 05-16-2013, 7:07 PM
 
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Re: running rich

Pull ur carbs off and prep work station on clean bench four rags layed out 1 for each carb. Pull bowl and top air diaphragm off pull plastic cover from mouth of carb remove air mixture screw from bottom of Carb. But first screw it in counting number of turns. Then remove. Pull both jets floats needle etc from bottom of carb. Run some tip cleaners from a cutting torch thru all ports in carb. Clean clean clean. Assemble. Move to next carb. R can do them all at same time just keep each carbs parts with each carb. It is not necessary to remove carbs from one another. But it is necessary to remove the choke rod two Philips screws to remove the lids of carbs.
make no adjustments to screws on throttle blades. To ease removeal and install use heat gun to heat the intake boots to make the rubber more plyable for removeal and install.

Does ur bike after stock airbox/ filter or aftermarket pipe header? Ifso a jet kit will be required if not already installed.
Is this a 900rr?
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post #3 of 16 Old 05-16-2013, 7:27 PM Thread Starter
 
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Re: running rich

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Originally Posted by 900rrHonda View Post
Pull ur carbs off and prep work station on clean bench four rags layed out 1 for each carb. Pull bowl and top air diaphragm off pull plastic cover from mouth of carb remove air mixture screw from bottom of Carb. But first screw it in counting number of turns. Then remove. Pull both jets floats needle etc from bottom of carb. Run some tip cleaners from a cutting torch thru all ports in carb. Clean clean clean. Assemble. Move to next carb. R can do them all at same time just keep each carbs parts with each carb. It is not necessary to remove carbs from one another. But it is necessary to remove the choke rod two Philips screws to remove the lids of carbs.
make no adjustments to screws on throttle blades. To ease removeal and install use heat gun to heat the intake boots to make the rubber more plyable for removeal and install.

Does ur bike after stock airbox/ filter or aftermarket pipe header? Ifso a jet kit will be required if not already installed.
Is this a 900rr?
Yeah she is a 900 rrv

Thanks for the advise. I am going to have a go at cleaning them tomorrow .
I will let you know how it goes
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post #4 of 16 Old 05-16-2013, 10:21 PM
 
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Re: running rich

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Originally Posted by donkeytrousers View Post
Yeah she is a 900 rrv

Thanks for the advise. I am going to have a go at cleaning them tomorrow .
I will let you know how it goes
Let me know if you have any questions I have hinds manuals doe 893 and 919 900rrs and have played with them so maybe I could be of some help to you. But its pretty straight forward job take ur time and do one at a time since its first time for you.
let us know if you need help or questions.
write down what your jet sizes are in the carbs and write down how many turns out ur air/fuel mixture screws are and make note of location of clip on needle if you have aftermarket needle.

AND you didn't answer weather you had stock airbox (recomended) or aftermarket muffler header etc..
if exhaust has been modified you'll need a jet kit if not already installed. Let us know jet sizes and weather your needle is adjustable clip location.
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post #5 of 16 Old 05-16-2013, 10:43 PM
 
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Re: running rich

Sorry, skipped part where u said new exhaust System. Was it stock before? Id order jet kit with needle if needles are non adjustable and some 142mains along in the kit.
Dynojet kits are good Sigma sucks their customer service sucks and won't trade jets even tho they "guarantee" their kits which is bullcrap cause they offer no help even tho I kno for sure jet size is to small but they argue the point of it banging out before it gets to wot.
Anyways get a jet kit to be on safe side! Dynojet
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post #6 of 16 Old 05-17-2013, 3:25 AM Thread Starter
 
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Re: running rich

Nice one guys! Thanks for the tips.
Just to re-cap.
I have replaced the exhaust with a full OEM system.
And she has OEM air box and filter.

I was thinking of putting a race can and air filter on as soon I get her running right.
I will definately get a dynojet kit I have been told they are good.

Upon further inspection I have removed the carbs. They look in good condition. I'm going to strip them later today and clean them down.
I can however, see that sine one has had a go at them before and has sheared off the cross type head on one of the pilot screws. (Cylinder 3).
Is this going to be an issue? I can't see how I'm going to get it out to clean it.
And I'm unsure of what the pilot screw does, I guess its the mixture screw?

Thanks guys
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post #7 of 16 Old 05-18-2013, 9:31 AM
 
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Re: running rich

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Originally Posted by donkeytrousers View Post
Nice one guys! Thanks for the tips.
Just to re-cap.
I have replaced the exhaust with a full OEM system.
And she has OEM air box and filter.

I was thinking of putting a race can and air filter on as soon I get her running right.
I will definately get a dynojet kit I have been told they are good.

Upon further inspection I have removed the carbs. They look in good condition. I'm going to strip them later today and clean them down.
I can however, see that sine one has had a go at them before and has sheared off the cross type head on one of the pilot screws. (Cylinder 3).
Is this going to be an issue? I can't see how I'm going to get it out to clean it.
And I'm unsure of what the pilot screw does, I guess its the mixture screw?

Thanks guys
First off. Use stock jetting and needle with oem airbox and muffler system. If you jet it then you will be Running Rich guaranteed. So id put needle 2nd or 3rd clip and go back to stock jetting sizes. Unless you plan on putting pipe on here soon. Lol
Jetting carbs with everything factory is something that don't need to be done. Honda had them tuned up pretty well. New bigger jetting without introducing more flow of air thru the engine is just gonna cause you to run just as you stated in thread title.

So go factory jetting needle etc unless you do plan on changing muffler or something. Save yourself the trouble of haveing do carbs numerous times.
wish I woulda know what u put on was OEM parts. There is no since in jetting.
so if you plan on new pipes do them asap it'll never run right with jetting with oem muffler / intake..

Good luck
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post #8 of 16 Old 05-19-2013, 2:07 PM Thread Starter
 
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Re: running rich

Well I took your advise.
Stripped the Carbs down one by one. They were quite dirty.
I set the needles on 2nd clip. For all carbs.
Put them back on and wahey! Result. ! Purrs like a big cat

Only problem I have now is that the throttle response is patchy.
She revs sweet. But hesitates then picks up with real power.
Pretty scarey stuff.

I guess its just syncronising now.

Thanks for all your help 900rrHonda.
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post #9 of 16 Old 05-19-2013, 6:11 PM
 
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Re: running rich

Have you removed the plugs and checked if its rich? Thats the best way to tell if your jetting is correct.



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post #10 of 16 Old 05-19-2013, 11:37 PM
 
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Re: running rich

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Originally Posted by donkeytrousers View Post
Well I took your advise.
Stripped the Carbs down one by one. They were quite dirty.
I set the needles on 2nd clip. For all carbs.
Put them back on and wahey! Result. ! Purrs like a big cat

Only problem I have now is that the throttle response is patchy.
She revs sweet. But hesitates then picks up with real power.
Pretty scarey stuff.

I guess its just syncronising now.

Thanks for all your help 900rrHonda.
Remember when I said write down what your jet sizes were. What were they? Your explaining what sounds like is a Rich condition. So what are the jet sizes? Cause u have factory pipe and intake no need for larger jetting if previously installed.
Ands how many turns out are your a/f mixture screws?

Glad to hear you got it going again. Lil more time on tuneing syncing carbs if necessary.
Your welcome on the help. Let me know jet sizes your running. Did you put the aftermarket needles in?
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post #11 of 16 Old 05-20-2013, 1:27 PM Thread Starter
 
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Re: running rich

Ok. Main jet size is 120 on all cylinders.
A/f mixture screws turned 2.5

As far as I know it's all standard kit.
I am running OEM pipe and muffler.

She seems to have settled slightly.
I think maybe a sync will help
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post #12 of 16 Old 05-20-2013, 8:24 PM
 
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Re: running rich

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Originally Posted by donkeytrousers View Post
Ok. Main jet size is 120 on all cylinders.
A/f mixture screws turned 2.5

As far as I know it's all standard kit.
I am running OEM pipe and muffler.

She seems to have settled slightly.
I think maybe a sync will help
Sync your Carbs 4 to 3 then 1 to 2 then 2 to 3. Rightside leftside center. Usually two three time before all is good. Do you have the threaded nipples for intake screw hole? I made some from small brake tubeing and a die I threaded the brake line. But they sell them too if you wanna wait.
You said you put needles on second clip from top? If your still rich on bottom end put stock needles in. The aftermarket are tapered differently and provide extra fuel. The stock aren't adjustable. So somebody put new in. Which u won't need if your still have rich condition in ur bottomend.
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post #13 of 16 Old 05-28-2013, 5:47 PM Thread Starter
 
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Re: running rich

Had a play with the carbs again...
Put needles on 2nd clip from top. With 120 jets.
A/f turned out. 2.25 turns.
Runs sweet. Have synced the carbs using a home made manometer. Easy job.
Loving the feel of the bike... she passed mot with no advisories.. happy days.

Thanks for all the advise. couldn't have done it without you....

If I can figure out how to post pics I will lol.
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post #14 of 16 Old 05-28-2013, 5:49 PM Thread Starter
 
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Re: running rich

Forgot to say... put scorpion carbon race can on her too. Standard filter still...
No need for KnN!
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post #15 of 16 Old 05-28-2013, 10:44 PM
 
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Re: running rich

Cool man glad you got her running good now! When u put the different can on did it not affect anything running wise?
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