We are into our first heat wave of the summer, last evening at 7pm, when we started our ride it was 32C (90F). The ride began with a half hour of tight 1st and 2nd gear single track trails. We took a break after this single track and I could hear my stock gas cap slowly letting off pressure. When I removed the cap there was a sudden release of pressure and the fuel in the tank began to boil vigorously. Replacing the cap stopped the boiling as pressure built up in the tank again, the cap began making it's sounds in a few seconds. Even with the fuel this hot, the radiator was not boiling over and the bike was running great. It even restarted without any fuss. I could certainly feel the heat from the exhaust system in my right thigh. The only thing I can think of that might reduce the fuel temperature Is wrapping the exhaust and trying to find some insulating aluminum foil to apply to the gas tank. It's kind of a strange problem for me because being on the west coast of Canada we are usually dealing with too much rain, not sun!
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sabink said:
Hi Sabink,
Regarding your post, did you mean that your exhaust is wrapped, or is it indeed warped?
I was thinking about wrapping my exhaust past the O2 sensor. Did you notice a big difference in heat reduction if you did indeed wrap the exhaust? And how much of it did you wrap?
Dale
Good suggestion on the ceramic coating,
Be aware though that when they get hot they can get stained by your melting pants or mud or whatever. I have had pretty good luck with the DEI header wrap on my 04.
I was thinking of wraping the whole pipe on my 09, but, I don't know what effect this would have on the 02 sensor. Anyone have any input on that?
Dale
Be aware though that when they get hot they can get stained by your melting pants or mud or whatever. I have had pretty good luck with the DEI header wrap on my 04.
I was thinking of wraping the whole pipe on my 09, but, I don't know what effect this would have on the 02 sensor. Anyone have any input on that?
Dale
DaleEO said:
Yes Dale, I meant wrapped.
Here are some pics how I did it and some more mods I did.
http://htftp.domainbg.com/sabin/pics/husaberg/mods/
Sabin
I also noticed on the weekend my fuel was boiling/bubbling out the clear breather hose. I have already wrapped the mid pipe with wrap and have a fmf 4.1 which is pretty free flowing.
what is causing this? should i be worried as the bike went and started well?
what is causing this? should i be worried as the bike went and started well?
After some long term testing I found out that the exhaust warp is not the way to go. I even measured with infrared thermometer and found out that warped exhaust it hotter than normal, not warped pipe. :shock:
Finally I got some heat shield pads with glue on them and put them on the fuel tank side, that is exposed to the exhaust heat. This fixed the problem for me.
There is a insulating sheet product selling specially for the FE 2009/2010 Husabergs! Search the forum, I do not have a link
Finally I got some heat shield pads with glue on them and put them on the fuel tank side, that is exposed to the exhaust heat. This fixed the problem for me.
There is a insulating sheet product selling specially for the FE 2009/2010 Husabergs! Search the forum, I do not have a link
I saw a CV4 heat blanket installed on the tank of Husaberg Factory rider Nick Fahringer's bike at the Sumter National. From what I can gather, you need to remove the small ball in the gas cap to allow the gas to vent easier. I was also told the hole in the hard parts metal gas cap is too small and the team was drilling them out to a larger size. I haven't had a problem with my fuel yet but I'm wanting the CV4 blanket for the tank.
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I had noticed several times after one particular trail I always have to work hard on, during 50 deg. F temps, I stopped to rest, that I can hear what sounds like gurgling or boiling in the rad area. I thought it was the rad because the second time I actually did overheat the bike a little at one point (there was steam for a little while - I guess I need to get a fan kit). The last time, I stopped and removed the cap - no hissing, but the gurgling noise stopped immediately. I don't know if it was because of pressure built up due to the bike moving around a lot, or the gas getting hot, but I think it is the latter as I have ridden the bike in other circumstances where it moved around a lot and not heard the sound.
The are some other mods I need to do where the tank has to come off, so I think I will put some heat shielding on the tank and maybe wrap the pipe too.
The are some other mods I need to do where the tank has to come off, so I think I will put some heat shielding on the tank and maybe wrap the pipe too.
The company is called CV4 and their website is www.cv4.net . They don't list it on their website yet and they have some bad code on the site so it gives you error messages sometimes.
I experienced the gas boiling/bubbling sound once on a slow/technical trail after we stopped. Very unnerving!
I removed the in-line valve in the vent hose (30 second job) and haven't heard the bubbling sound since.
So that's one, easy step that you can do right away.
I will be adding the heat-shielding foil the next time that I have the gas tank off.
Cheers! E-Ticket
I removed the in-line valve in the vent hose (30 second job) and haven't heard the bubbling sound since.
So that's one, easy step that you can do right away.
I will be adding the heat-shielding foil the next time that I have the gas tank off.
Cheers! E-Ticket
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- Seattle
That removes the sound, but not the heating of the fuel.
I took a video of it yesterday to capture the sound, I will post it up today.
I took the cap off, the sound stopped, then I put the cap back on, and in a few minutes the sound started again. This is with the engine off the whole time.
Definitely going to get the header wrapped.
I took a video of it yesterday to capture the sound, I will post it up today.
I took the cap off, the sound stopped, then I put the cap back on, and in a few minutes the sound started again. This is with the engine off the whole time.
Definitely going to get the header wrapped.
Here's a video of the gas boiling/bubbling before I removed the inline, one-way vent.E-Ticket said:
And though I still plan to install the heat-shield sheets on the bottom of the gas tank - I think removing the one-way vent helps -- as it helps reduce the pressure in the gas tank -- which reduces the temperature -- which helps reduce the gas boiling.
E-Ticket
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Hey E-Ticket
I'm bit a newb to wrenching. What is the in line valve in the vent hose?
I noticed my bike getting hot after a long technical section and thought i heard boiling.
Its weird b/c I swore i heard boiling when the gas cap was on. Once i took the cap off the noise would stop.
Sounds like if I open the vent line it will breath better.
I actually purchased the hard parts blue anodized gas cap and vent hose.
BTW, the darn thing is super hard to turn to get off/on. It turned normally when I first got it and now its very hard to turn. I make sure not to close it all the way b/c its so hard to turn.
I'm bit a newb to wrenching. What is the in line valve in the vent hose?
I noticed my bike getting hot after a long technical section and thought i heard boiling.
Its weird b/c I swore i heard boiling when the gas cap was on. Once i took the cap off the noise would stop.
Sounds like if I open the vent line it will breath better.
I actually purchased the hard parts blue anodized gas cap and vent hose.
BTW, the darn thing is super hard to turn to get off/on. It turned normally when I first got it and now its very hard to turn. I make sure not to close it all the way b/c its so hard to turn.
ah the old sticky gas cap :cuss:
- take off your gas cap and turn it over, you should see three torqx head bolts, undo them and remove the little round ball.
- Do the bolts back up but leave them slightly loose
- Rub some grease on the gas cap rubber seal
- install the cap and see how tight it is to do up
- if it's tight to do up, loosen the three screws a tiny bit, if it's still too loose to do up, tighten the 3 screws some more
no problems with boiling fuel or cap hard to get off anymore on my bike
- take off your gas cap and turn it over, you should see three torqx head bolts, undo them and remove the little round ball.
- Do the bolts back up but leave them slightly loose
- Rub some grease on the gas cap rubber seal
- install the cap and see how tight it is to do up
- if it's tight to do up, loosen the three screws a tiny bit, if it's still too loose to do up, tighten the 3 screws some more
no problems with boiling fuel or cap hard to get off anymore on my bike
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