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Old 02-02-2013, 07:32 AM
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Default Optimax, fuel injector cleaning.

I am hoping some can help me understand how to remove the fuel injector on my 2004 150hp optimax. I'm not getting max rpm from my port motor and suspect I have a dirty injector. Also, should I remove the direct injectors for cleaning too? Are the direct injectors really just air injectors? Anyone with experience doing this would be a great help. The shop manual says I have to bleed off the fuel rail pressure, can I just hit the schader valve and bleed the fuel and air? Thanks, looking for tips. David.
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Old 02-02-2013, 09:46 AM
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The air injectors are more important than the fuel injectors. I had all of mine cleaned and recalibrated and it takes a special cleaning machine and process. We sent them to a shop in Pa 2 years ago made a big difference
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Old 02-02-2013, 11:02 AM
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You need to loosen the two nuts that hold the fuel rails, and lift them up off the top of the injectors. You don't have to take the rails all the way off, just almost off to clear the injectors.. You then use the "special tool" to pop out the injectors, or two good straight screwdrivers to pry them up carefully on two sides. They will come out pretty easily.
The best place to have them done right is probably Flagship Marine in Punta Gorda Fl. Call them at 941 639 3738, and ask for Jeff Brown. He can answer all your questions and get them done for you. They do a pre flow test, and provide you a report of before and after.
I did both of my engines and they run great. Make sure you always use some good fuel stabilizer like STARTRON by Starbrite, in your gas and maybe add a little Marvel Mystery Oil to the fuel to keep the injectors lubed. It works wonders!
Good luck
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Old 02-02-2013, 11:16 AM
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Personally I would not attemp it, Tony Brucato Racing will do a whole calibration for $150 for 6 - at least on my EFI ones

If he can make them run 9000 he should be able to fix yours

he makes ECU replacements also for 1000 I think

For a quick DIY try - Evinrude Fuel System Cleaner - may have to order it, has worked great for mine once a year on Deposit Removal Ratio

DO NOT USE ANY AUTOMOTIVE PRODUCTS
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Old 02-02-2013, 12:15 PM
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There is no reason why you wouldn't want pull them out yourself and have them flowed, sonicly cleaned and screens replaced like they should be.
As the other guy mentioned, there are others that do injectors, but these are Opti air/fuel injectors, and they specialize in Opti's at Flagship.
There is no free lunch and you don't need an ECU re-worked or anything like that. Have them done right.
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Old 02-02-2013, 01:20 PM
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Ok, I pulled of all of the injectors, fuel and air, from both of my motors this afternoon. Didn't take vey long, maybe 30 minutes per motor. They just popped right off, almost seemed too easy. I've been looking on line and it seems that shops with the asnu equipment are the ones to deal with for cleaning. Now the big question, what makes the optimax direct air injector any different from other injectors? And can the shops with the asnu injector cleaning system all handle the optimax direct injectors? I would really like to hear from someone who has already been done this road. Thanks.
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Old 02-03-2013, 05:33 AM
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All the tools in the world are only as good as the operator, and his/her experience. I can't speak for any of the other outfits that say they do injectors, but I have had much experience with Flagship, and they know what they are doing, have the latest equipment, do the job completely, and back up their work.
You've got them out, now get them done and get back to enjoying your boat.
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Old 02-04-2013, 04:36 AM
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We can clean these for you I you would like. $18 each plus $9 return priority shipping.
Dynamic Flow
843-303-O240
Www.dyflo.com
You will receive before and after results.
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