08-21-2012, 04:26 PM #1
Never ridden a seadoo sc engine anything before today and have a few questions
Took first shakedown today and rode about 11 miles. Couple questions for you guys familiar with seadoos.
1 When you are cruising , is it normal to feel a little buzz or vibration? My GPR does it and I assume thats normal for 3 cylinder? Its not excessive, but can feel it.
2 My afr at idle is rich 10.8 and wide open 12.5 with xcharger and 42s. Im going to install a cmd to clean up low rpms, should I also add fuel to top ?
3 The plugs have started and idled several times on hose without before ever going into the water. I was doing a few blasts from dead stop and fouled a plug/ picked up skip. Is that reasonable considering my idle afr? Guess what Im asking is it reasonable to think cleaning up idle afr and new plugs and will be good to go?
Here is a pic of my plugs and o2 sensor #2 is one I think fouled?
08-21-2012, 04:54 PM #2
- Join Date
- Apr 2008
- Plainfield, IL
Yes 12.5 WOT is too lean. It must idle like it has a cam in it with that rich of a AFR for idle. Shoot for around 13-13.5 idle
08-21-2012, 05:03 PM #3
depend on the fuel.... but pump fuel @ 12.5 could destroy your motor and 11.5 is much safer
I run 12.5 and it is in the safe zone for my fuel
08-21-2012, 05:24 PM #4
Is the little buzz/ vibration normal for seadoo engine or do I need to start checking things?
08-21-2012, 05:27 PM #5
With pump gas, my targets afr should be ? 13.5 idle 12.5 below 6500 and 11.5 above ? ( Im just guessing from what I've read)
08-21-2012, 05:31 PM #6
no boost @13 is ok
if you aim for those numbers you should be safe
08-21-2012, 05:49 PM #7
08-21-2012, 05:49 PM #8
You think it pulls now wait till you get your idle and mid in the 13's Hold on.. Boost starts around 6K
08-21-2012, 05:51 PM #9
08-21-2012, 06:05 PM #10
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