HPDI INJECTOR QUESTION

[flounderpounder225]

Outfit in NC called Brucato gets top reviews on all the boating forums, then there is Flagship marine in S. Florida also highly recommended, most are about $25 per injector for clean, flow test, and adjust volume and pattern to within 2-4% of each other, that's the number their looking for.  I think if the weather permits I may try and remove them this weekend, its been cold as heck last 2 days, 21 the other morning on my way to work

[RickK]

$300 each - WOW - Did these come out of a Diesel - pricing is the same it seems :-(

[Capt. Bob]

Did these come out of a Diesel

Are you dissin' my tow vehicle?

[flounderpounder225]

Trying to post pictures... I thought the new site would be better.. OMG maybe because of my IPad  this is painful.  This was the start, after the coil packs and rear covers were removed.  Next pictures as I kept removing, remove the Allen head machine bolts holding the fuel pipes to the fuel rails,  remove the bolts holding the fuel rail to the head and the wiring, the fuel rail just pops off the end of the injectors which have a large o ring using two pry bars with equal pressure top and bottom slowly the rail just pops off.  Then remove the injector keepers which are held in with one bolt each.  Then there is a small slot to insert a flat blade screwdriver and the injector should simply slide out. 

[flounderpounder225]

[dburr]

What did the tip look like?

[RickK]

Trying to post pictures... I thought the new site would be better.. OMG maybe because of my IPad  this is painful.

It is painful because the iPad comes up as a mobile device - I am working that still.  Anyway - we found out that we needed to change the properties on a folder on the server so hopefully we won't see a timeout anymore for the "upload folder".  Hey, this how we make the site more solid.

[flounderpounder225]

I'm there Rick, I was just a little frustrated as we all get sometimes.  Worked all day on the motor, worn out.. and wanted to post up some step by step stuff, and just kept hitting a wall.  I know you do everything you can to make CAS the best it can be, and I appreciate it.  Thanks!!

[numlaar]

I'm quite sure you are already aware, but always like to point out, please be sure to use new O-rings on the injectors for the fuel rail, and the injector seats. I've seen too many times people try to skimp on them, and put it all together only to have it leak on them.

You can use a little Di-electric silicone to lube the O-rings. Its injector/sensor, and rubber safe, and makes installing them a bit easier.

Nice pics! Good luck on the final result.

[flounderpounder225]

The tips were all about the same condition, looked pretty good, no carbon build up pretty clean actually.  I am going with the fuelinjectorman in Punta Gorda Dale Goble.. talked with him for a while this morning on the phone, he gets good reviews on the forums, and seemed to be very knowledgeable, $18 per injector with new micro filters installed and the O-Ring on the fuel rail end.  I ordered the 2 per injector compression washers for the tip end from Andy at SIM Yamaha along with the new LP Pumps, diagnostic cable and Fuel Pressure Tester kit, man is Yamaha proud of their O-rings and washers.. those fiber washers on the tip end are $8 each, and it takes 12 for all the injectors, more for some washers than to service the injectors, but they are way too important to skimp that step, and I was just happy the injectors came out as easily as they did. 

[wingtime]

Marc,

See if you can borrow a tube of Parker O-Lube from some of the aviation mechanics on the base.  That stuff is like gorilla snot, but man does that stuff do wonders for O-rings.  That is what I used when working on my plane... or anything with a O-ring.  Makes installing O-rings a breeze.

[flounderpounder225]

Yeah, I have a myriad of stuff in my shop, this one stuff which I think will work well  is an aircraft and instrument grease Christo-Lube MCG114, its an inert grease we use in our LOX and Cryogenic equipment, or I was even thinking just put a little of my synthetic 2-stroke oil on the O-Rings when re-assembling? 

[flounderpounder225]

http://www.classicaquasport.com/gallery/uploads/6406/20150110_111801.jpg

[flounderpounder225]

Need some advice here, all injectors now cleaned and flowed 100% spot on, new coil pack, engine running at 5600 rpm no hesitation, but this #6 cylinder is the same one that was fowling the plug prior to all this, and I thought the injector was to blame.  The engine does idle better and seems smoother but after a few high speed runs up the bayou back at the house this is what the plug looked like, compared to all the others, lefts hand plug #6 right hand looks like all the others, could this be a reed valve issue.  I know the injectors are right. 

[wingtime]

What if you change that coil pack to another cylinder and see if the problem follows?  Do you have a six wire spark gap tester?