Turbo Pro, PTO side quit running

[Kestrel2126]

Yesterday, after riding hard all day, (9-10 PSI all day) I had one cylinder quit on me. The sled ran on one side (Mag) but I could not get the PTO side to fire. I have good compression on both sides, getting spark on both sides, but nothing from the PTO. It seemed like I was getting fuel on both sides, but I have not gotten into the sled yet, other than on the trail. I checked harnesses and all my electrics seemed ok. I did have an oil cap leak and had injector oil spill on the VR, and wire harnesses that are directly in front of the reservoir, but I can't imagine that that is the issue. I'm thinking possibly a bad injector, or a broken reed petal(s). Anyone got any suggestions/ideas. Thanks

 

[Liv4snow]

Mine did the same thing acted like a fouled spark plug. Sent it my dealer reed on both sides were shot after 200 miles. At least it is an easy fix.

 

[dmkhnr]

Reed or injector.
Has you had trouble starting the sled at any point. My buddy's bdt pro will not start some times, we have to let it sit 20 minutes and she finally fires.

 

[Kestrel2126]

Doesn't have a starting issue. Hoping its a reed, not an injector. I'll know soon, at least as soon as I get motivated enough to tear the thing apart. The reed seems most likely, as the problem never threw any codes or set the engine light. I would think that any injector issue, would put up a code. I put in new petals when I installed the turbo, about 300 Miles ago, and they are the Boyesen "Turbo" petals. I have always had good luck with those, but I guess everything fails prematurely, once in a while.

 

[tree climber]

silber advised me not to use those.. i had already purchased and installed them though. i have yet to put any time on them but i plan on keeping my stock reeds with me in case

 

[turboless terry]

Once in a while I have to hold my wife's pro wide open and pull it twice to get it too start.
Only trouble we've had is we took a girl, that watches our daughter, on a poker run. She was going so slow I couldn't hardly stand it. My wife had the scratchers down. They almost don't do any good going that slow but she said it never went over 132. Stopped and got our first card. Started her sled and it would only run on one cylinder. The mag side was cold. Changed the plugs but they looked fine. Still one cylinder. Took the hood and side panels off and started going through the wiring. Didn't seem to find anything. Fired it up and it ran fine. Went to the next station. Same thing. By then I was figuring some kind of heat issue. Sent my wife and natalie on there way while we hung out for a half an hour with the panels open. Fired it up and ran the socks off it. 8.4 pounds of boost. It ran like a champ. Haven't had any trouble since. Boondockers had one do something similar and it was the pipe sensor. Let us know.

 

[Arcteryx]

Reed or injector.
Has you had trouble starting the sled at any point. My buddy's bdt pro will not start some times, we have to let it sit 20 minutes and she finally fires.

My bdt pro does that. No problems with it before the turbo but it does it now. If you turn the key off, pull the rope 3-4 times HARD, turn the key on crack the throttle just a tad and pull hard it usually fires. If not I repeat the key off part and then do full throttle and a hard pull. TCP gave me the tip and it has helped every time now.
Still a PITA but at least I'm not sitting around for 20 minutes anymore waiting for it to clear up. Was told by TCP to pull HARD every time! I can get it started every time now within a minute or so.

 

[Kestrel2126]

Found it! Broken reed petal. This was the first failure with the Boyesen petals, that I have had. I put the stock petals on for now, and the sled is back up and running. Glad it was something minor!

 

[tree climber]

are you going to put in another set of boyesens?

 

[dmkhnr]

Found it! Broken reed petal. This was the first failure with the Boyesen petals, that I have had. I put the stock petals on for now, and the sled is back up and running. Glad it was something minor!

Glad you found it. I just ordered a set of the holz vents courtesy of your pic.

 

[Kestrel2126]

are you going to put in another set of boyesens?

Not sure. I've had good luck with them in the past, and this is my first failure from them. I think I will order a set of petals from one of the Turbo builders, that are offering "Turbo" reeds. If Boyesen comes out with a full reed cage for this motor, I will probably go to it though. Reason being is their cage incorporates an aluminum neck to connect to the throttle bodies, and eliminates the stock TB boot, that always, eventually delaminates

 

[HighmarkerX]

Do you think the reed broke from not having a intercooler and the intake temps are too high? Just curious as I am waiting to see all the turbo stuff plays out before getting one on my Pro and what reliability issues there are.

 

[Silber]

we run over 15 psi of boost with no intercooler, and havent had any reed failures. I think this was just a bad reed.

 

[Kestrel2126]

I agree with Justin. Think it was just a bad reed. My air temps, are not getting extremely high, even at 10PSI. An intercooler, or some way of cooling intake air will always be beneficial, but I don't think that it is causing problems w/o one now. That said, I have now been warned against the Boyesen Petals by Justin (Silber) and BD. I was told that the Boyesens only lasted 60 miles before failure in the BD test sled.
I checked my motor as best I could through the reed/intake port in the case, and checked my turbo, and could find no sign of the missing reed piece. Everything looks to be in good shape, so I am hoping that the crank munched the petal and spit it through the exhaust.

 

[RidnHigh]

Kestrel, first off thanks for the post I hope that what you described has been my issue. My sled ran great saturday and then yesterday would start running crappy around 5k rpm's and appear to be cutting out terribly while the temperatures would read like 900 on the PTO side and 1100 on teh Mag side but I too have great compression, and spark. It did become harder to start as well, like 4 pulls instead of 1-2. Does this sound anything like what you were experiencing??

 

[Liv4snow]

I think it is from det. My bd pro has Proubly done it fifty times.

 

[Kestrel2126]

Kestrel, first off thanks for the post I hope that what you described has been my issue. My sled ran great saturday and then yesterday would start running crappy around 5k rpm's and appear to be cutting out terribly while the temperatures would read like 900 on the PTO side and 1100 on teh Mag side but I too have great compression, and spark. It did become harder to start as well, like 4 pulls instead of 1-2. Does this sound anything like what you were experiencing??

Sounds like that could be your issue, however, mine was a sudden occurrence. I would definitely check your reeds, sounds like you could have one cracked or stuck.

 

[Kestrel2126]

I think it is from det. My bd pro has Proubly done it fifty times.

Not sure what you mean? I don't believe my reed failure had anything to do with Det, as I can't make my sled hit the sensor regardless of how hard I try, except twice, when I ran it hard on the trail, and I got it to over rev. Even then, I believe the sensor, is overly sensitive, and detonation may not truly be happening, everytime the sensor claims. Also, what do you mean that your sled has done this 50 times?, surely you're not talking about reed failure?

 

[dmkhnr]

Was the reed just chipped, or broken? Just pulled my buddy's apart and one of the petals has a small chip at the end. Sled wouldn't R past 5k.

 

[Kestrel2126]

There was a 3/8" by 3/4" piece missing from one of the petals