Rebuilt 951 won't fire

[Sanddune12]

Finished installing rebuilt 951 tonight. Went to fire it up and...nothing. All fuses in MPEG were good and all fuses in electrical box were good. Battery is charged. Only thing I could possibly think of was the code on the lanyard key needed to be reset since it sat idle for the past year and everything had been disconnected. Any ideas out there??? Memorial Day coming up and I plan to be pulling my kids on the tube! Thanks!

 

[howie099]

Do you hear the 2 beeps when you plug the lanyard in? You should hear somehting when you connect the lanyard. I kill the power to my boat over the winter that shouldn't effect the lanyard and MPEM pairing. The lanyard cip could be bad even if you have on that is not paired to your MPEM you will still hear beeps from the MPEM.

 

[Sanddune12]

It did chirp when I plugged it in. Is it possible to re-set or re-sync it? Or if it is bad and I bought a new one, how do you pair it with the MPEM?

 

[howie099]

I beep is usually bad lanyard or worng lanyard. If you don't have the aftemarket tool to read the MPEM you have to take the whole boat to the dealer to get another landyard programmed to it. Sorry that is how Seadoo does things.

 

[rjcress]

My Challenger has a 787, so different system, but I nearly went into full blown panic mode when I tried to start my rebuilt engine for the first time. It wouldn't start... just chirped at me 4 times.
I looked up the beep codes in the manual and found that 4 beeps meant it was not in neutral.
Once I put it in neutral, it worked.

I hope this is your issue, as it is the easiest issue to fix.

 

[Sanddune12]

Thanks for the quick responses guys, I appreciate it! I think it beeped once but I will check when I get home. Is there any particular reason one would go bad? It worked fine last Memorial Day when my engine took a poop! It has just been sitting in the boat since.

 

[Sanddune12]

Update. It does chirp 2x when I plug it in...but still absolutely nothing when I punch the starter button! What now???

 

[Coastiejoe]

Just for the heck of it, jump the solenoid just to see if you have good connections, good battery and a good starter.

If it turns over by jumping the solenoid at least you have a clue as to what direction to head,,,,

 

[Sanddune12]

Thanks for the tip, I'll give that a try tonight!

 

[Sanddune12]

So I jumped the solenoid tonight and the engine turned over. I pulled the ignition switch and it seems to be working properly. Not sure what to to do now. There must be an issue between the switch and solenoid. Since all the wiring is wrapped in protective plastic I don't know what could have changed or occurred that this was not a problem before. I am about to break down and take this to a doo mechanic but my trust in these shops is limited. I am about to hook up the trailer and haul this thing the 3 hours for a visit with Doc Honda!!! Any suggestions?

 

[Coastiejoe]

Could be your key, the DESS, or the brain. I know the first two are easy to test. I'm learning as well. Give it a day and I'm sure one of two guys I'm thinking off will jump in and help.

 

[howie099]

You get the 2 chirps so I would say the DESS is working right. You can test all of those parts. The solenoid could be bad you are jumping it bypassing how the switch works. I would test the solenoid to make sure it is ok.

 

[Sanddune12]

How do you test the solenoid?

 

[ocod]

If your jumping across solenoid and it cranks over its usually bad solenoid.
951 electonics not my forte but im sure Dr would offer his $.02 if you pm'ed before making that drive.









edit: pn#16

http://fiche.seadoowarehouse.com/se...=132&b=26&c=0&d=-ELECTRICAL---BATTERY-HARNESS

 

[Dr Honda]

Got your PM this morning... and these guys do have you on the right track. I'd say, there is a high probability that you simply have a bad solenoid.

You have 2 beeps, so the MPEM is working (to some level) and the starter is spinning when you jump it... so... the battery, wiring, and starter is good.


Get a new solenoid, and I bet you will be up and running again.

Send Minnetonka4me a PM... and I bet he can get you a solenoid for a good price, and fast.

 

[Sanddune12]

Great news... new solenoid came in the mail today! Just got home from popping it in and...started right up!! So the good news is that sitting in a barn it started, but won't get a chance to drop it in the water til first of next week to see what happens pushing water. I bled the oil pump and put a half gallon of oil in a half tank of gas then topped it off. I read a thread sometime last week that talked about breaking in a new engine so I'll have to find it and print it out. I assume that it will smoke more than normal for that first tank of gas with oil mix. When I get to that 2nd tank, how do I determine if I am running lean, how do you know if your getting the right mix? Any other things I need to keep in mind as I break in this new engine chime in...thanks!

 

[ocod]

Great news... new solenoid came in the mail today! Just got home from popping it in and...started right up!! So the good news is that sitting in a barn it started, but won't get a chance to drop it in the water til first of next week to see what happens pushing water. I bled the oil pump and put a half gallon of oil in a half tank of gas then topped it off. I read a thread sometime last week that talked about breaking in a new engine so I'll have to find it and print it out. I assume that it will smoke more than normal for that first tank of gas with oil mix. When I get to that 2nd tank, how do I determine if I am running lean, how do you know if your getting the right mix? Any other things I need to keep in mind as I break in this new engine chime in...thanks!

If you have your oil pump working right and adjusted then its like set it and forget it.
Check oil lines annually and top off tank when you need to add.

You can continue to premix jik but why waste more oil. But yes you will smoke more than normal

To break in will take at least 3 tanks. Not sure if 951 same as smaller 787/717.
Do not do WOT pulls until then.
You do up to 30% throttle first tank, then 60% on 2nd tank, short bursts of 100 throttle.
Never holding one rpm for very long. You are always playing with the throttle.

Your black sooty plugs will tell you that your rich. Make sure to have right jets and HS/LS settings of carbs.

Our resident 951(Sabertoothsqrl) has not chimed in but had issues w/his ski not running right b/c of the wrong jets.

 

[howie099]

If you set the carbs to factory specs you should be fine. Seadoo if very good with carb settings. You can verify with a plug check but I doubt you will to adjust much or if any. The easiest way to check if you oil system is working if fill it to 1 point and mark the tank it drive around with the thank of pre-mix and take a look after it should of gone down. If it didn't you will have an issues. Todays newer oils don't smoke as much you will see the most smoke at idle past that you really won't notice the extra oil in the tank. Might have to swap the plugs after the break in but you will be good. I am glad it was a cheap relay that was your issue.

 

[Sanddune12]

Update: Dropped boat in the water tonight. Initially kept it attached to the boat. started right up, did not see any water seeping in. It idled pretty smooth until I pushed away from the dock. Put it in reverse and gave it a little nudge of gas. Pretty quickly started running rough and then cut out. Motor would turn over but not stay fired long. Pulled plugs, they didn't look bad but tossed in new anyway. Also checked fuel filter and it was clean. After a bit got it to idle for 20 secs or so but then cut off. Almost seemed like it wasn't getting enough gas. I got this rebuilt motor from a guy in FL. I had called SBT for a rebuild and they gave me this guys # since I needed a salvage case (five holes in mine) and he was near to them. When I called the guy for a case and head he told me he had a 951 in the shop with Pro-ex pistons all ready to go and he would sell it to me for same price as SBT without me having to give him a case and head. The guy sounded like he knew what he was talking about and I assumed he had a legit shop since SBT seemed to know him and do business with him. Hindsight is 20/20, I should have just went with SBT. This guy was the worst business man ever and it took me months to get the motor after I had paid him. I know, I know...I should have done more research and then sent him half the $ with the other half at delivery! Anyway, not even sure this guy knew what he was doing with this rebuilt motor, so maybe the problem is internal. The other thing I though about was a thread I read once on gray fuel lines with Tempo on them. This has those and I wonder how long this motor sat idle. Maybe the lines broke down over that idle time and is messing with the gas flow??? I'm lost and out of ideas, any help out there would be much appreciated! Thanks!!

 

[rjcress]

Again, I'm far from an expert, but I just fried a freshly rebuilt 787 by running it with an air leak (carb gasket that was misaligned). The first thing the guy at the rebuild shop asked me was "would it idle". He said that if a 2 stroke won't idle or dies when you try to put it "in gear", that his first thought is an air leak, which is making it run lean.
Lean will cook a motor quickly.
No idea if this is your issue, but my motor only lasted 2 hours before it lost compression... so maybe something to check.
I hope you are able to sort it out quickly.

 

[Sanddune12]

Thanks for the reply, rjcress, I appreciate it! Just got back into town after being gone for several days so I will try to rule out an air leak. Does anyone know if the gray fuel lines can cause significant trouble or is it just recommended to change them out to avoid a smaller issue?

 

[rjcress]

I've heard that the grey fuel lines deteriorate on the inside and fill your carbs with goo... which sounds significant to me. The advice I've always seen from the experts on this forum is to change them. period.