I think were talking about the same item Chris ,
http://cgi.ebay.co.uk/Honda-Firestorm-V ... 240%3A1318,
Tbh it was just one of many items i changed to try to elliminate the problem my bike had .
Erratic performance 5,000 rpm
thats a great suggestion guys. i don't have the haynes manual (yet) but i'll try find something about how to test it on the net somewhere.
i was thinking though, if syncing the carbs made the problem a little worse, would that not mean its the carbs?
thanks again for all the help guys, its absolutely great. really appreciated.
i was thinking though, if syncing the carbs made the problem a little worse, would that not mean its the carbs?
thanks again for all the help guys, its absolutely great. really appreciated.
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http://www.vtr1000.org/phpBB2/viewtopic.php?t=8831zixxer wrote:thats a great suggestion guys. i don't have the haynes manual (yet) but i'll try find something about how to test it on the net somewhere.
Dont bother with the haynes manual, there's a lot of duff info in it. The workshop manual is better.
http://www.gofastvideo.com/video/385/Ho ... ice-Manual
Rich.
Hi there
Just wanted to throw in some thoughts, having skimmed through the thread.
If you're running race cans and standard jetting then I'd expect fuelling to be a little off as you're de-restricting the gas flow of the engine. Have you thought about cleaning the carbs up and fitting a dynojet kit to correct things? Or even just getting the bike on a dyno to look at emissions through the rev range and pinpoint any issue there?
Also, you mention yours has the PAIR fitted. Over on the GSX1400 org (one of my other bikes) we've now got a batch of blanking plates made up. A few of us have shown how the PAIR f*cks up the exhaust pulse, and makes stubby or race systems a nightmare. They pop, fart and rev dreadfully, as the PAIR on suzuki's (same on the SV's) dumps fresh supply from the airbox into the exhaust manifold and ruins the pulse.
You don't notice it on standard setups so much as the restrictive pipes hide it.
To disable the PAIR you simply need to block the inlet to the engine with a new blanking plate, or tap a thread into the inlet tube and slip a bolt in it. You can then block the airbox and remove the PAIR altogether (they're a pain if you're tuning and cause false readongs on a dyno, sending your fuelling way out).
Just wanted to throw in some thoughts, having skimmed through the thread.
If you're running race cans and standard jetting then I'd expect fuelling to be a little off as you're de-restricting the gas flow of the engine. Have you thought about cleaning the carbs up and fitting a dynojet kit to correct things? Or even just getting the bike on a dyno to look at emissions through the rev range and pinpoint any issue there?
Also, you mention yours has the PAIR fitted. Over on the GSX1400 org (one of my other bikes) we've now got a batch of blanking plates made up. A few of us have shown how the PAIR f*cks up the exhaust pulse, and makes stubby or race systems a nightmare. They pop, fart and rev dreadfully, as the PAIR on suzuki's (same on the SV's) dumps fresh supply from the airbox into the exhaust manifold and ruins the pulse.
You don't notice it on standard setups so much as the restrictive pipes hide it.
To disable the PAIR you simply need to block the inlet to the engine with a new blanking plate, or tap a thread into the inlet tube and slip a bolt in it. You can then block the airbox and remove the PAIR altogether (they're a pain if you're tuning and cause false readongs on a dyno, sending your fuelling way out).
It's not how fast you ride, it's how you ride fast.
Lads......Good news! I think I nailed it! It was the feckin PAIR system the whole time. Last night I brought her inside and said to hell with this, I'm removing everything got to do with this PAIR system and at least then its off the list. I was unconvinced that it would sort the problem. So I removed the tank and airbox for the zilliointh time and got stuck into the little control valve stashed inside the silver box. I noticed that there was a lot of oil in there and that the valve was immersed in it. Upon closer inspection when the valve was removed I could see the valve was actually stuck open. I released the little screw on the reed and popped it over closing the valve permanently and cleaned up the oil and put it all back together.
Today I took the bike on the 100miles to uni and back and she didnt misbehave once. She drove on beautifully all day and I was just waiting for it to wombles up, bit it didn't. It even sounds different, she pops much more on the throttle over run now and its all beautiful!
You know I'm still cynical and half expect her to be back to her own tricks as soon as I take her out again, but fingers crossed because I really think its actually sorted!
Thanks so much for all you help lads, but especially Chris as the information he gave me on this site has fixed my bike and I'm seriously grateful. Thanks again everyone! Pray you don't see me back in here on this thread tomorrow!
Today I took the bike on the 100miles to uni and back and she didnt misbehave once. She drove on beautifully all day and I was just waiting for it to wombles up, bit it didn't. It even sounds different, she pops much more on the throttle over run now and its all beautiful!
You know I'm still cynical and half expect her to be back to her own tricks as soon as I take her out again, but fingers crossed because I really think its actually sorted!
Thanks so much for all you help lads, but especially Chris as the information he gave me on this site has fixed my bike and I'm seriously grateful. Thanks again everyone! Pray you don't see me back in here on this thread tomorrow!
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Just wanted to add that my bike had a control valve on the back valve cover and none on the front. The casting marks to fit the control valve and its little cover are on the front head, but not there. However, I do have one on the back. This is interesting and perhaps its points to a dark past for this particular bike, but if you are having similar problems, check this out.
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Zixxer,
I'm glad too hear you seem to be getting somewhere at last, it's about time you had some good luck
Fingers crossed for you that was the problem
Chris.
Yes I agree, that is the same item Was that on your Triumph or Firestorm, as not too sure 
Chris.
I'm glad too hear you seem to be getting somewhere at last, it's about time you had some good luck
Fingers crossed for you that was the problem Chris.
Stevie,bikerpiker wrote:I think were talking about the same item Chris ,
http://cgi.ebay.co.uk/Honda-Firestorm-V ... 240%3A1318,
Tbh it was just one of many items i changed to try to elliminate the problem my bike had .
Yes I agree, that is the same item
Was that on your Triumph or Firestorm, as not too sure Chris.
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bikerpiker
- Posts: 1823
- Joined: Sun Mar 23, 2008 9:59 pm
- Location: Ayrshire - Scotland .
Sorry Chrissirch345 wrote:Zixxer,
I'm glad too hear you seem to be getting somewhere at last, it's about time you had some good luck
Chris.
Stevie,bikerpiker wrote:I think were talking about the same item Chris ,
http://cgi.ebay.co.uk/Honda-Firestorm-V ... 240%3A1318,
Tbh it was just one of many items i changed to try to elliminate the problem my bike had .
Yes I agree, that is the same item
Chris.
It was on my Triumph Daytona , apparently they were quite bad for them failing , but i dont think this particular part gives much bother on the 'storm
Stevie
hello lads, unforunately the bike is 100% sorted. she was bogging down same as usual a little today but not as bad. she tramped on most of the day without complaint.
however, the slight-misfire/bogging down issue has changed a little. listening closely i can actually hear sort of popping inside the airbox when the malfunction happens. also, yesterday when she drove so well, the exhausts were popping much more, in a really nice way. however, today she hardly popped at all from the cans. strange isn't it?
sunday i intend to travel to my mate who has the vacuum guages so i can check to see if those carbs are still well synced. i feel i'm getting nearer to nailing this.
however, the slight-misfire/bogging down issue has changed a little. listening closely i can actually hear sort of popping inside the airbox when the malfunction happens. also, yesterday when she drove so well, the exhausts were popping much more, in a really nice way. however, today she hardly popped at all from the cans. strange isn't it?
sunday i intend to travel to my mate who has the vacuum guages so i can check to see if those carbs are still well synced. i feel i'm getting nearer to nailing this.
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hello lads. im back to bloody square one on this bloody bike. its still stuttering away.
since ive last wrote i fitted a new samco hose kit (yesterday/today).
but still in carb hell lads and no way out.
taking them off again tomorrow and going through everything for the zilliointh time.
too pissed off to even bother.
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I was thinking we hadn't heard from you lately. Sorry too hear you're still trying to sort this problem.sirch345 wrote:Good practical advice LSM
I've been doing a bit more research on your problem Zixxer, especially after all you've now tried with no cure found yet. But at least you're narrowing it down
What I have comer up with however is the possibility of the Pulse generator coil breaking down. Apparently it's more noticeable at higher speeds rather than lower. The pulse generator coil is part of the ignition system and is located behind the waterpump/clutch casing.
Info on testing it without removing it etc is in the Haynes workshop manual if you've got one.
I'm not sure if this, what Bikerpiker mentions (in his quote below) is referring to the same thing, but it does sound like it
bikerpiker wrote: I had symptoms very much like yours ,albeit at lower revs ,the pick-up coil /sensor was prone to fail ,so check that as well,if you havnt already...i bought a new one and even it was out of spec , also my coils gave an in-tolerance reading when cold, but were way out when hot, to find this out i set up a remote petrol tank ,so i could check em instantly without having to remove everything and therefore giving em time to cool
Did you manage to get anywhere in checking out our other possible cause (as above) with the pulse generator coil
Chris.