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Originally Posted by wcs
(Post 4013490)
Hey 9k,
In your first post you recommend replacing the omp oil lines, with what? Did you use the same OEM lines purchased from the dealer or did you use something else? (admittedly I've not spent the time to read this entire thread) I've got my OMP table cranked and my oil consumption (or lack there of) is has me ... well ... lets just say I'm keeping an eye on it. (I am heavily premixing atm) I've been to onlinemazdaparts.com and mazmart.com and can't find the oil injectors. Where do you get these things or are they called something else in the parts world? Thanks .... I'm playing my lazy card today (I had one saved up) I replaced them with factory OMP lines, I don't think doing custom lines is worth it, the factory lines will last at least 100,000 miles and fit perfectly. |
I have to agree with Nadrealista about cleaning the oil injectors via that vacuum line. I also tried this out awhile back and have seen drastic changes in oil consumption.
Before this I consumed about 0.8qts of oil per 2,000 miles. (5w-30) Last oil change I consumed 1.5qts per 2,000 miles (10w-40) I have already consumed about 0.5qts on this oil (600 miles) Thats a HUGE difference. Sure it could be something else, but my driving habits are pretty much set in stone, so I really believe this did something. The only thing I did different was use 1/2 a can of seafoam instead of a few ozs. -Shawn |
I knew it would work! :us4allswi
did you just let is suck in the seafoam at idle or did you rev the engine up? |
Originally Posted by 1.3_LittersOfFurry
(Post 4014536)
I have to agree with Nadrealista about cleaning the oil injectors via that vacuum line. I also tried this out awhile back and have seen drastic changes in oil consumption.
Before this I consumed about 0.8qts of oil per 2,000 miles. (5w-30) Last oil change I consumed 1.5qts per 2,000 miles (10w-40) I have already consumed about 0.5qts on this oil (600 miles) Thats a HUGE difference. Sure it could be something else, but my driving habits are pretty much set in stone, so I really believe this did something. The only thing I did different was use 1/2 a can of seafoam instead of a few ozs. -Shawn But there is a separate thread for this so please take your discussion about you method of cleaning the injectors there and I will comment in that thread. |
where does the seafoam go then?
OD |
Dead side seal again this weekend in our SII engine.
Bugger. :( That's a fair few now that have died of that! |
dang dude--sorry to hear that.
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what? I thought series 2 is invinsible?
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Originally Posted by olddragger
(Post 4015003)
where does the seafoam go then?
OD To me, it is a risk because I'm not sure what a good amount of seafoam would do to that little plastic vacuum block if it is already old and brittle from the heat. Not to mention brittle old vacuum lines. |
Originally Posted by PhillipM
(Post 4015072)
Dead side seal again this weekend in our SII engine.
Bugger. :( That's a fair few now that have died of that! That sucks, how many hours on the motor?
Originally Posted by maxchao
(Post 4015388)
what? I thought series 2 is invinsible?
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Hmmm --i need to look at my system. I know the lines are good and I am using oil. But you never know?
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9k, can you please explain more on how "the little black box" is made since you have seen it?
I understand what you are saying, but I don't see how only one can get seafoam and not the rest if you pour enough in. A photo would really help if possible. Also, do you know if the box can be accessed (or atleast seen) with the alt removed? Sorry not trying to thread jack you or anything like that. Thanks -Shawn |
Originally Posted by 1.3_LittersOfFurry
(Post 4015633)
9k, can you please explain more on how "the little black box" is made since you have seen it?
I understand what you are saying, but I don't see how only one can get seafoam and not the rest if you pour enough in. A photo would really help if possible. Also, do you know if the box can be accessed (or atleast seen) with the alt removed? Sorry not trying to thread jack you or anything like that. Thanks -Shawn Well I should explain I guess. If you put in enough to fill the entire line, the vacuum distribution block, and the vacuum lines to the injectors I guess you could physically get the seafoam to the injectors but that is beside the point really because there is still be no vacuum there to suck it all through. And no, the vacuum block is held in place by the fuel rail, the UIM needs to be removed to get to it. |
Originally Posted by ayrton012
(Post 3846987)
Let see it again OD:
The oil nozzle receives the barometric pressure from the air hose to prevent the negative pressure from the engine being applied to the oil inlet. Also, a one-way check valve has been adopted to prevent oil from flowing out of the air hose side when the engine is under positive pressure. https://www.rx8club.com/attachment.p...1&d=1294947079 1 Air hose side 2 One-way check valve 3 Oil inlet 4 Oil outlet 5 Housing side Between the trottle's butterfly valve and the engine is vacuum. But there is atmo pres between the air cleaner and the throttle's butterfly valve. If there would be vacuum at the MOP nozzle's air intake pipe (1), the engine suck's out more oil from the MOP (3) than that is metering. With the atmospheric pressure on the nozzle's air intake (1), the engine's vacuum only sucks (4) the metered oil amount (pushing by the weak pressure of the MOP) and air from the air hose side (1). |
Originally Posted by Nadrealista
(Post 4015682)
This post pretty much explains how would seafaom go trough the nozzle..when the seafoam is introduced it floods the "black box"..then each nozzle sucks in seafoam instead of air which manifests itself by engine wanting to stall. one should actually be able to observe green seafoam moving trough the air supply line(if they are visible without removing parts) to the each nozzle?
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Forgive me if I've got the wrong end of the stick here, but the Mazda manual says if the injectors suck anything in through the vacuum point then they are broken and need replacing. If it can suck seafoam in through point 1 in the drawing above, you need to be throwing them away and buying new ones surely.
Re: the failure theory - my '04 4 port with 44,000 miles looks to be putting too little oil in through the injectors and runs badly without premix. This started about 12 months ago. |
Originally Posted by Manic Mechanic
(Post 4015691)
Forgive me if I've got the wrong end of the stick here, but the Mazda manual says if the injectors suck anything in through the vacuum point then they are broken and need replacing. If it can suck seafoam in through point 1 in the drawing above, you need to be throwing them away and buying new ones surely.
Re: the failure theory - my '04 4 port with 44,000 miles looks to be putting too little oil in through the injectors and runs badly without premix. This started about 12 months ago. Smart guy :) It would be more leaking down then sucking though. Yes, I noticed right away that my consumption was down. You don't have a lot of miles but the components are aged for sure. Premix should help but remember the function of the oil injectors also aids in cooling as well. How much is debatable but personally I would never eliminate the OMP systems and strictly use premix. That is why I still premix 1/2oz per gallon of fuel even though I have the SOHN adapter injecting clean 2 stroke. |
Originally Posted by Manic Mechanic
(Post 4015691)
Forgive me if I've got the wrong end of the stick here, but the Mazda manual says if the injectors suck anything in through the vacuum point then they are broken and need replacing. If it can suck seafoam in through point 1 in the drawing above, you need to be throwing them away and buying new ones surely.
Re: the failure theory - my '04 4 port with 44,000 miles looks to be putting too little oil in through the injectors and runs badly without premix. This started about 12 months ago. 9krpmrx8 take it easy man, I think what we are discussing here is actually quite relevant to your thread topic. |
Originally Posted by Nadrealista
(Post 4015759)
vacuum tests the check valve which prevents anything getting out of the nozzle trough the port 1 where seafoam is getting sucked into the nozzle.
9krpmrx8 take it easy man, I think what we are discussing here is actually quite relevant to your thread topic. |
I know but some reason I just like posting in this one :-)
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Originally Posted by Nadrealista
(Post 4015782)
I know but some reason I just like posting in this one :-)
Bastard. |
Originally Posted by 9krpmrx8
(Post 4015511)
That sucks, how many hours on the motor?
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Originally Posted by PhillipM
(Post 4015808)
It's done about 55-60 hours race use and maybe 15-20 testing, almost exactly the same as the previous series one engine :(
Was it the spring that failed? |
I think so, not ripped it to pieces yet, it was the side seal on the previous ones and going by the other experiences on here it does point towards the springs...
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