01 gtx di issues

[roberth2013]

Hey guys back again, took the girlfriends DI out this weekend, unloaded it on the water, rode it to warm it up, maintenance light was blinking but ran fine, anchored in 4 ft of water, in front of our campsite, next morning started it up, maintenance light still blinking, warmed it up so i could hook it up to the scanner, rode it about half a mile then it started losing power and then shut off, started back up a couple times to head back to scan it for codes, just outright quit hasnt started up again, mpem changed out, fuel pump changed out, hasnt started again
ran a compression check, by unplugging the injectors, sprayed a light coating of fogging oil before running the compression test, my tester says im getting less than 40 psi, can a good running ski with a 130 hours on the engines compression degrade that fast ?

any help appreciated

 

[Dr Honda]

OK... a few things....


1) If you have a code scanner... why didn't you just check for codes right away?

2) Did you ever pull the codes?

3) Why did you change the MPEM? (The problem codes were in the old one)

4) Why did you change the fuel pump? (did you find it to have low pressure?)





OK... here's a few thoughts that come to my mind.

1) One thing I try to stress here is engine run hours really only counts for the first few years. After that, there are too many variables. Also, an older "Low Hr" ski is almost worse than one with normal to high Hr's on it. The reason is... when it's not running... oil goes away, and rust sets in. Then, when it's started... that rust polishes away. Each time, taking a little metal with it.

My buddy didn't listen to me, and bought a beautiful 2001 Yamaha GT1200, with 60 hr's on the clock. (He also didn't listen to me on the oil) So.. on the second ride out... he lost the rear cyl.

2) As far as "can a good running ski with a 130 hours on the engines compression degrade that fast ?" ...... I'm really not sure what is making you surprised here. It's a 14 year old toy. How is that fast? Also... you decided to ride it with a warning on the gauge. One thing to keep in mind... with compression that low... it's not "Wear". That's a melt-down. So... it's generally an instant thing. In your case, it may have been salvageable, if you didn't keep restarting it.

3) Not knowing what the original codes were... a 2-stroke is VERY sensitive to running lean. SO... when you get a sign of something being wrong... STOP riding!

4) Since it's a Di engine... you have no choice other to run the oil injection. Was the oil low? (was that the warning light?) Also... do you use the right oil?? that engine NEEDS API-TC synthetic oil. If you run anything else... then it will die early.



OK... I know that seemed a little harsh... but I'm really not trying to make it be that way. it's just that it's easier to be direct. With that said... the 951 engine is the shortest life engine from Seadoo. But, we normally see them go for more than 200 hrs before they need a top-end. But here again... run time has been superseded by regular time. (age)

 

[roberth2013]

ok which question first, pulled the codes after I saw the maintenance light blinking, first code was low voltage,on the battery so running it to warm it up would not affect the engine, or its running, forgot to switch off the power from last ride,
question two, I run only xps, reply to rust, did you notice that I used a light coat of fogging oil, for a wet compression test, hence I use fogging oil every time I bring the ski home from a day of riding, right after I flush the cooling the system, to avoid the corrosion issue, the ski ran fine the weekend before, plenty of power, no issues running to speed , question 7 I used my scanner to activate the injectors,the fuel pump, the rave solenoid, the mags to shut down each cylinder, everything was within specs, the reason I changed the mpem? after towing the ski back to the dock, I ran a code check again, P0230 FUEL SYSTEM CIRCUT FAILURE

used my scanner to activate and release fuel pressure, not the issue, have a spare fuel canister with a new high flow pump, easy change out, so I eliminated
that issue, as far as running low on oil, or trash in the oil, before the season starts I remove the fuel tank and oil tank, drain and clean them thouroghly, and refill with fresh XPS OIL and fresh 93 octane ethanol free fuel, is all that's ran in both the ski's and one more test I used to to eliminate any fuel questions, squirted 50 % either and starting fluid through the fogging port on the air box, cranked the engine with the throttle bodies half open, fresh new plugs, not even a sputter, yes I checked spark on the new plugs,, bright blue crisp spark, so now you see I eliminated all the possibles before I came to post here,

 

[seadoonewb23]

Roberth2013 what ended up being your the reason your seadoo was throwing the P0230. I am stuck in limp mode, I replaced fuel pump with one from highflow and still have beep code. Also not sure if related but it stalls on idle but if i bump right above idle all good but have to make it to F or R before dying makes a pain to dock it and trailer. its a 951 le di.

 

[jhjesse]

.....................

 

[seadoonewb23]

What is the procedure for testing rectifier. I was reading on a bunch of threads and people were saying the high flow is only aftermarket that's good. Not sure myself first doo

 

[jhjesse]

Put a volt meter on the battery and start the engine. Read the voltage at 4000rpms.

 

[seadoonewb23]

12.8 on 2k and 4k rpms