living the dream 1122

Checking all vac lines...still no solution

scottiemann

Yea i know what the pair does, i have it removed. I just asked because you originally said you removed it but it was still there in the video...

When you push the slides in and release them, do they snap shut or slowly shut?

living the dream 1122

I tore the carbs back down blew out all the jets checked all vac. Lines and other possible points of failure.

This is after.
Slides shut slowly.

living the dream 1122

Can anyone post a good link to a do a carb sync and tps adjustment?

Thank you
Plan on doing these tommorow to try and clear up my problem!

rick

I did mine around the time I joined the forum. I found the tutorial by searching. it popped up pretty quick from a google search. I think it was posted by tweety or 8541hawk(??).

living the dream 1122

Okay i will keep searching for one!

rick

https://www.superhawkforum.com/forum...n-sensor-9876/
'hawkrider' posted this one. Thanks man


Carb sync is pretty straight forward. Just hook up the lines to the vacuum ports and turn screws.

comedo

A TPS adjustment procedure is a sticky in the Knowledge Base. You can find an article on carb synching on the UK Firestorm site (www.vtr1000.org) in the Workshop section. Both tasks are covered in the Service Manual which is available in the Knowledge Base.

scottiemann

ill see if i can find those for ya in a few minutes... normally i would yell at you to use the search function but im almost stumped by this issue(i hate diagnosing things over the internet)

so Im going to sound like an ******* here and start the "just for ***** and giggles" dance so here it goes

did you double check all sensors are plugged in correctly?
did you check your fuse box for any blown fuses?
did you double check to make sure your spark plug boots were seated correctly and that the coils were plugged in correctly?
are you seating the carbs properly and tightening the boots?
did you move the TPS sensor at all(kind of hard because they have shear bolts from the factory unless someone already adjusted it)?
how old is the gas?

and lastly(not so dumb)...
do you have any fully lit pictures from the top with the tank and airbox removed?
did you happen to notice if there was a jet kit installed for the carb jets?

living the dream 1122

Thanks for the link!
Yes this issue has me a little frustrated to say the least!
No harm taken.
All sensors have been overlooked.
Fueses have been pulled and overlooked.
I removed my plugs for inspection and reinstalled them pressing the boots on firmly till they clicked.
Tps has not been move from factory settings.
( I did completely dismantle the carbs tho meaning removed both side holder brackets that keep the carbs stationary for inspection and cleaning but the issue was there prior the carb tear down and after the carb tear down.)
Gas is 93 octane picked up and put in the tank two days ago the tank was drained prior to the "maintenance"
The jets looked untouched when I opened the bowls the bike was completely OEM prior to me getting my hands on it.

Wicky

Double, Triple check vacuum hose isn''t split, perished or simply on the wrong way. Petcock diaphragm check for splits and that carbs are firmlt and securely reaseated in their boots. And try the standard airfilter as K&N isn't a plug'n'play performance enhancing mod - it needs rejetting for which has made grown men cry and usually ends up with it getting dispensed with in favour of a OEM filter.

Also try standard exhaust system as like the K&N filter changing to a single can will decrease performance unless jetting accounted for. Make sure system all airtight and seals and gaskets doing their job.

When you fitted the front cylinder vacuum brass takeoff have you put some hose on it and blocked it off?

living the dream 1122

I am going to attempt to eliminate unnecessary vacuum hoses.
If you look in the video the "blue lines" are all high heat polyurethane lines I'm replacing all of them to help elimate any pin hole/split lines.
I replaced the vacuum line that connects to the tank horizontal nipple that starts the prime for the pump.
Replaced all overflow and breather lines with polyurethane.
Remove the 5mm plug under the front cylinder carb and installed a fitting and ran polyurethane line for that.
(Both vac lines for carb sync are sealed off on ends with plugs to prevent leaks)
The petcock looked in good shape just cleaned it out light film of grease and re installed.

The kn I am reading now how much of a pain it is.. if me not getting it for a good deal I would have just installed a OEM paper filter.
(I installed the OEM filter I removed and the issue was still present)

For the exhaust I cut the dual flange so all I can.do now is single outlet but I did install the OEM can and still same issue.

But on many bikes before I have done a large tune up and installed new cans and a drop filter and have never had this much of an issue.

I can see a slight drop in power without proper tuning/jetting but for the bike to run like this is very odd.

I will give the sync a shot hopefully they are way out and that is my issue!!

From the videos presented any thoughts on what it may be,
No one has had this nor a similar issue?

Thanks again gentlemen!

living the dream 1122

I also plan to elimante the PAIR system to help eliminate an issue there, and also possibly run a catch can to the crank case vents, or install pod filters on the ends of the hoses.
These are all parts I have from my last few projects just not sure which route to go.
Any takers?

I'm not trying to cause more headache by eliminating more parts before one problem is resolved,
I just need to be sure that these are not the cause so the problems!

Wicky

As you're discovering the VTR isn't an IL4 where these mods work straight out the box. Return everything to how it was before you attempted multiple mods simultaneously. Get it running right - read up and the pros and cons of what each mod does with the VTR, introduce them one at a time, then try it out to see wether they add any improvement and if it needs any fine tuning.

Is the VTR's airbox exactly stock as it is very sensitive to any chopping, drilling or any changes.

Have you access to a dynometer - did you get a baseline measurement? What are you aiming to achieve?

living the dream 1122

I have worked on a super hawk in the past did a tune up and a stop filter.
Its adapted nicely to the new upgrade!

Im going to give the sync a shot and if no luck back to stock she will go.

Not off hand dynometers are hit and miss in my area.
No baseline.
Aiming to achieve a powerful, reliable machine!

scottiemann

I feel like after all this its going to something obvious and stupid and you are going to feel like an *** lol...

Id replace all vacuum lines as your doing

living the dream 1122

As do I lol!
I'm going to be very upset with myself when I find the issue!
The only problem is there are only a few vac lines that go to the carb and there locations are obvious.
The pair system wont effect the carbs as well ad the ccv the bike would still run fine with these disconnected!
So what else could it be lol!!

living the dream 1122

Okay.
Finished the polyurethane lines today same issue occurred!
Sync the carbs today the front cylinder was way off!
Now flat across the board...same issue.
Checked the tps with ohm meter set at 20k got a reading of 5.37 is this a normal reading at 20k ohm?

I'm pretty much stumped...but I think it can possibly be the tips because that reading seems off to me.
Any input would be greatly appreciated!!!

7moore7

Your ohms are at 537 I think based off of those numbers... that's not that far off from the 500 recommended (mine was set much further than that from the factory). Try setting it at 2K ohms and it'll read correctly. It certainly wouldn't be causing this issue. Worry about that later.

Unfortunately you have a few things to keep track of that you've changed. I wouldn't look at anything that you haven't changed yet (such as TPS). 2-1 chopped stock exhaust headers and K&N filter are just begging for tuning issues. No way no how are the stock carb setting going to work. My uneducated guess is it just needs a good deal of carb tuning. May want to look at others with 2-1 exhaust for pointers.

living the dream 1122

The reading was at 5.37 at 20k ohms I drop it to 2k ohms and it barriers out the ohm reader.
Almost like its reading in the 5k.37 mark.

That's what I am assuming as well.
I deff need some pointers on where to start on the rejetting I have an assortment of jets from over the years
If anyone could give me a good starting ground on a jet set up it would be a real big help.
The way it is acting idle to 4 k is rough right in the pilot jet area at higher rpm 4500 and up it isn't to bad.
A good start jet and needle shim height would be a lot of help fellas...
Been a nice day here today 73° seen a lot of bikes ride buy and missed a big ride with my family over this issue.
Real bummer guys!!
Thanks for everything gentlemen keep the opinions coning please!

7moore7

I'd read through the following thread and start pm'ing people who have done it or look for other info in it in there. It's not a common enough mod for people to have a standard baseline, and you won't get much help asking in a general help thread.

https://www.superhawkforum.com/forum...-setups-28999/

living the dream 1122

Thank you 7moore.
Pulled the plugs brand new plugs they are carbon up a bit if the bike was lean in would presume the plugs would be white or a lighter color...
But still need to invest in a jet kit accordingly.
Need to get the old girl back on the streets!

living the dream 1122

Review,
Okay i was able to find a few jets laying around from my last build.
The slow jets in the bike where 45.
I installed a 48 in the front and a 47 in the rear.
The bike was running okay at idle gave it a blip of the throttle same exact thing...this slide shutter and during once again.
So out of curiousity I covered the rear carb just enough to cause resistance but enough to suck in AIT still

living the dream 1122

Review,
Okay i was able to find a few jets laying around from my last build.
The slow jets in the bike where 45.
I installed a 48 in the front and a 47 in the rear.
The bike was running okay at idle gave it a blip of the throttle same exact thing...this slide shutter and during once again.
So out of curiousity I covered the rear carb just enough to cause resistance but enough to suck in air
The bike smoothed out and throttle responce was there again the shutter had left.
I removed my hand and the same issue accursed once again with the shutter.
(I did this test with the air box off velocity stacks in place no filter.)
Soo I pulled the 47 and 48 jet back out and reinstalled the 45's out of pure curiousity the shutter was still there but when i cupped my hand over either front or reae cylinder the problem with the shutter and theottle responce went away!

What does this mean?
I am getting to much fuel on my stock 45s?
I am at a loss!

living the dream 1122

Sorry form the half double post typing from a phone..
Sorry

scottiemann

Sorry to see your still having issues, i recommend you read this article https://www.superhawkforum.com/forum...changes-13841/ im sure you know what your doing when it comes to carbs but this is specifically for our bike.

And to recap, the 2-1 exhaust can be a nightmare to tune and im sure you read the thread regarding that...

Secondly, the K&N filter has been known to be hard to tune as well...

I also recommend that when you are testing your adjustments that you have the bike back together...ie airbox and filter installed

And lastly my assumptions, since your brand new plugs are carboned up and the choking on accel. It seems like you are running way too rich somewhere

Check out factory pro jet kits, reasonable priced and easy to tune.

scottiemann

Oh and i would try and tune the stock filter if you still have it first then add the K&N...

And again i wouldnt recommend trying to tune this bike without airbox and filter because this is sounding like a tuning issue rather then a mechanical problem.

living the dream 1122

Yes this issue is becoming quite frustrating but i havnet given up yet!!!

Thanks for the carb link!

I didn't realise the 2-1 exhaust would be so difficult but there's no going back now!!
Unless I re weld the flange and I don't want to do that!!

The kn is about to go in the garbage from what I read lol.

A friend recommended covering half the velocity stacks with duct tape and see how the bike runs that will tell me if I'm getting to much air or to much fuel!

Never had so much carb issues lol

scottiemann

Yea these carbs are finicky little bastards...

living the dream 1122

Your telling me I'm not having to much fun anymore lol!!

Anyone have any tricks to adjust AFR screws?!

Called around no one wants to sell me just the jets they want to push me rowards a kit.
What all comes in a stage one kit?
Been searching with no true answer!?