First off.. Ada head with 185 compression. Riva red pipe. Group k bored carbs. 145 HSJ 1 /1/2 HS screw, lSJ 100 and LS screw 1turn.(idles perfect until today) I was running Boyensen RAD valves . I would get a season or two tops with those. Lasti time I put in Jetworks reeds on the boyensen valve cause they are suppose to last longer. My third ride out today and I am engine dies out after running fine.. Barely get it started and idle back to shore barely. it wont maintain idle without giving it gas and keeping RPMs at least 2200. I richen up the low speed screw back to 1 turn and richen up high speed screw 1/2 turn thinking I am lean. Idle is crap. I go to 1 1/4 out on low speed screw. Still can barely get it going. I pump the throttle to get it going to plane and from plane upward it rides great. I did noticed that I get higher rpms at around 7/8 throttle than full throttle. (not sure if that means high speed to lean or too rich) So I am thinking plugs are fouled. I get home and change them. Still idles like crap on trailer. The times before when it did this, the reeds were chipped, so I think that happened again. I will find out when I take it apart. So I am either going to go with v force reeds or stock.. What do you guys think?
Reed reccommendations?
- Thread starter billglass
- Start date
High Speed Industries
Your one stop shop for quality parts @highspeedind
- Location
- Lake Havasu City, AZ
I've had great luck with fiberglass reeds on stock cages. The vf2 reeds are also a good choice.
Quinc
Buy a Superjet
- Location
- California
You should be getting more then a season or two out of any reeds. Call Boyesen and see what they say.
Quinc, I only got four rides on these Jetworks "better than boyensen petals" ones.. Again, to be fair, I will update once apart which will be tonight or tommorrow at the latest.. I otta get this thing back and running well. Idle isn't too important for me but nice when the wife and friends ride. No fun when it's hard to start either... LOL
Quinc
Buy a Superjet
- Location
- California
If it is your reeds, chances are the next set is going to fail in a short amount of time as well. You need to figure out the cause.
Quinc
Buy a Superjet
- Location
- California
You should be able to get multiple season out of your reeds. Backfires are probably the worse thing for them.
I haven't had any backfires.
UPDATE: reed petals for the most part look o.k. No major chips. One isn't sealing tightly when closed and has some very minor chips. I don't think this is causing the problem. Not sure. What do you think? what other issues could make the ski switch from running great to a low rpm turd. Again mid to high rpm no problem.. Maybe carbs need rebuild? Could this little lack of sealing cause this problem? Help? not sure what to do? maybe I should get new reeds anyways? Could the installation of the new head be causing this? Only three rides on it.
UPDATE: reed petals for the most part look o.k. No major chips. One isn't sealing tightly when closed and has some very minor chips. I don't think this is causing the problem. Not sure. What do you think? what other issues could make the ski switch from running great to a low rpm turd. Again mid to high rpm no problem.. Maybe carbs need rebuild? Could this little lack of sealing cause this problem? Help? not sure what to do? maybe I should get new reeds anyways? Could the installation of the new head be causing this? Only three rides on it.
Quinc
Buy a Superjet
- Location
- California
Could be a leaking needle or seat. Check your pop off
That thought enter my mind too. Here's the plugs when I pulled them. These were new. Did one hour run first trip, changed hs jet from 150 to 145 and ran about 30 mins before engine died and problems started. These are the plugs when I got home. The first set of plugs I pulled from my first ride out were both very black. I'll check pop off today.
Quinc
Buy a Superjet
- Location
- California
Also check your one way valve.
Quinc
Buy a Superjet
- Location
- California
breather valve on your fuel tank. Lets air into the tank but not out. You can have issues when it goes bad and lets air both in and out.
Update: Opened up carbs, replace hs jet with mikuni brand instead of the wsm brand that was in there. Checked pop-off. checked seats. looks ok.. put back together with old gaskets. (need to order new ones) Notice a piece of gasket material under rear carb from old removal that I never got off. Unhooked heated grip in case they were causing battery drain or shorting something out. Started her on trailer with hose and seems to run almost perfect. slight hesitation with a pull the throttle but i'll adjust ls screw in water per manuals. the only difference is my ls screw is out a 1/4 turn form before. . Maybe the difference in weather. I plan check compression and if that's o.k. wait till the problem comes back. I know it's not fixed. maybe I tricked the motor into thinking I fixed something.. just kidding LOL
hmm
Are you talking about that little black cylinder thing that connects to a water draining thing and go to gas tank? I drained some water out, not too much, what do I check for to go bad? Looks like a tube thing inside the black cylinder thing. Sorry for my lame descriptions.
Hey, trying to get this hsjet right. I noticed that I was getting 6700-6900 rpms at like somewhere between 3/4 to 7/8 throttle and when I opened it further it would go down to 6400-6500. Is the idicating rich or lean condition. I don't want to lean it out thinking I'm rich and then boom. The thing is with these taper bored carb, I have no one to compared too. Right now I'm at 90 lsjet 145 hsj pop off 32 low screw 1 1/4 and high speed screw 13/4. We know this is considerably higher than what most run on non-bored carbs. If no one knows I'll start at 150 hsjet and 2 turns out for a new starting point and go from there.