Hi.
after wheelies in 1 (On my s4r w full zard exhaust, PC3 and k&n open air filter). a strange sound emerges. It sounds like something is broken, and it sounds like it comes from the engine. when i drive after the wheelie the sound continues. It is hard to describe the sound, but the sound gives the impression that the bike is not running correctly. At the same time i don`t think it actually affect the performance of the bike. If i twist the throttle for a minute it goes back to normal again. If i wheelie in any other gear the sound does not appare. And the sound never comes from regular driving. The sound feels very wrong, but at the same time, how can it be somethin serious if it goes away after a minute or so. anyway, i hope some of you guys know what this might be?
Thanks
Do you notice any white smoke after this?
It's not unheard of for some oil to exit the crank case breather when a duc wheelies. Do it enough and you'll get some that's going back into the air box via the crank breather system
Okay, what does that mean? It is no danger? This sound does not occure if i drive fast without wheelie in 1. I have not noticed any smoke..
Well one way to get rid of the noise is to stop doing wheelies. Just saying.
Quote from: hackers2r on May 28, 2010, 12:42:52 PM
Well one way to get rid of the noise is to stop doing wheelies. Just saying.
What fun is that? [evil]
Quote from: hackers2r on May 28, 2010, 12:42:52 PM
Well one way to get rid of the noise is to stop doing wheelies. Just saying.
Just not in first ;D
^True that [thumbsup]
The dealer told me that it is the zard exhaust that is leakin a bit and makes the sound. Good news. A little exhaust paste should do the trick
Uh...aren't you the same guy who said you used exhaust paste already? In the thread about the exhaust "shooting?" I'm kinda confused?
hehe, yes. That is true. But the zard exhaust consist of several parts that apparently need past to sit firmly together. I only used it on the last to parts... So no i have to open these again to be able to do the front pars as well..
After looking at how the Zard exhaust is setup, here is my suggestion: Check the gaskets from the small OEM header pipes to the zard header. The Zard, like many other setups, is a slip fit system. These types of systems are *usually* a pretty snug fit, not much room for paste and leaks. The issues you're probably experiencing with the noise and shooting/backfiring are probably coming from one of the gaskets immediately after the short OEM header pipes. It could be installed incorrectly or need replacing. Save the money for the exhaust paste and check those gaskets.
Those gaskets were a weak spot with the OEM system as well.
Quote from: hackers2r on May 30, 2010, 05:01:15 AM
After looking at how the Zard exhaust is setup, here is my suggestion: Check the gaskets from the small OEM header pipes to the zard header. The Zard, like many other setups, is a slip fit system. These types of systems are *usually* a pretty snug fit, not much room for paste and leaks. The issues you're probably experiencing with the noise and shooting/backfiring are probably coming from one of the gaskets immediately after the short OEM header pipes. It could be installed incorrectly or need replacing. Save the money for the exhaust paste and check those gaskets.
Yes, i also believe that it is not a good and tight fit between the OEM header pipes and the zards. I don`t think there is any gaskets there? I got some type of gasket with the zards, but since the pipes are whole i(not cut) it will not work to tighten the gasket around the pipes...
Check out this picture:
(https://farm5.static.flickr.com/4048/4653457957_952678b491.jpg)
In that picture, part "33," the gasket, slides over the header, part "2." Then your Zard header pipe, the pipe on the left-hand side, slides over both the gasket and the header. Part "33" is what you need to check and if there isn't one there, there needs to be on both the horizontal and vertical cylinders.
Thanks a lot for this information. I don`t have this gasket. It is missing from my original exhaust.. The local dealer does not have it in the store. Is it a spesial part? will i find something that works at a local hardwere store?
It's a stock Ducati part.
I doubt you'll find anything in a hardware store.
Give Ducati Seattle and Commonwealth a call. They both have excellent inventories. They are listed under "Sponsors".
The part # is 790.1.012.1A. If you are in the states, you are bound to find a dealer that has a few. Like Ducpainter said, they were a known issue on bikes that used this exhaust design. I can't believe you are running the bike without these! That thing must be backfiring like CRAZY. Get these on there ASAP. They can be a pain in the ass to get seated right so I'd buy a couple spares too, just incase you damage them in the process.
He's not in the states...
so exhaust paste will not do the trick?
No, i am in norway and it takes a while to get things from overseas..
And yes, the bike is backfiring like CRAZY..
Exhaust paste will NOT do the trick. The gasket you are looking for is a steel mesh doughnut, exhaust paste just isn't going to do the job. If you order from someone in stock it should be less than a week of shipping. Those things are really cheap too. There just isn't going to be a home fix for this man. Only other way is eliminating them completely and having the header pipe welded to the Zard pipe.
Quote from: hackers2r on May 31, 2010, 09:53:05 AM
Exhaust paste will NOT do the trick. The gasket you are looking for is a steel mesh doughnut, exhaust paste just isn't going to do the job. If you order from someone in stock it should be less than a week of shipping. Those things are really cheap too. There just isn't going to be a home fix for this man. Only other way is eliminating them completely and having the header pipe welded to the Zard pipe.
We're spoiled in the states regarding shipping.
Customs in many countries will slow a package significantly.
I think his best bet is to order them from his dealer....and buy spares. They don't last long. ;)
Quote from: hackers2r on May 31, 2010, 04:48:51 AM
The part # is 790.1.012.1A.
The dealer told me that this is not a ducati part number.. does anyone know the correct part number for ducati?
Thanks
Mikkel, I assure you this is a Ducati part #. Straight from their parts catalogue and double checked with an online Ducati part catalogue. I would check with another dealer if you can.
Hi again.
Now I have made sure that there is No leak from the exhaust any more. And the strange sound i was talking about after wheelies in 1. gear is gone. That is good. The problem now is that the bike is shooting, and shooting even more than earlier. the shooting is no exclusively coming from the back/end of the exhaust, whereas earlier it came from one of the leaks (i believe). In another replay, i think from ducpainter, he said that the shooting might come from a too rich map on the PC3. Other people told me, including the ducati dealer, that the shooting might come from the leakin exhaust - but now that cannot be the case. It is the ducati dealer that adjusted the PC3 after I uploaded a OK map. So, my question is, should i adjust the PC3 again and then the shooting will go away? I have a K&N filter w open air box. Does this effect anything. I dont have a stock air box lid so it is not easy to check this:). Any other suggestion. The shooting is so frequent that it is really annoying.
Thanks for answers
If you're sure there are no leaks the bike is probably mapped incorrectly.
The open airbox does make a difference.
Did you do that before or after the dealer adjusted things?
You could go back to a different map and see what happens.
hi,
okay. Yes, i did cut the air box lid before the dealer adjusted the PC3. I can try to change the map and make sure that the map the dealer did is saved..
If there is an exhaust leak anywhere, it can backfire at the tips. How did you seal the leak and how did you test if it is sealed? If that isn't an issue anymore, I'd tell you to definitely check the map. Not really any other places to cause backfires/shooting like you are describing.
I can even see the blue/yellow light when it backfires. I have now noticed that one of the cans still leaks a bit where it bends up. But can this still be reason for all the backfiring? I somehow feel that it has to be The PC3 or something with the fueling. But the map i choose before the dealer adjusted it was the one the bike performed best with..
ANY leak, no matter how small, can cause backfiring. Not sure what you mean about the can bending up. Post some pics and before moving on to any other possible culprits, fix ALL of the exhaust leaks. I had the same thing happen and you wouldn't believe how small the leak was.
Hi,
Yesterday i god the gasket. I mounted it, and also used exhaust tape and exhaust paste on all the connecting parts (extentions) on the zards. I also used some paste and tape on the outside of the extentions on the zards to make sure that there is no leak anymore. And i don`t think it is leaking now. It can`t be..
BUT, i still have the backfire. It only comes when i let go off the throttle. And most/loudest when i let go off the throttle after heavy acceleration. Is the next step now to download a different PC3 map? Thanks fore all feedback.