ok so I just read the thread while at work and I hope I didnt miss anything

from what i gathered, I need to check the arm position

I am going to have this all apart tonight

 

lol 9k, we should just skype and do it together

 

did you try adjusting the Sohn adaptor at all to see if it made any difference?

 

Has anyone drilled the oil injectors?
OD

 

No, but I will be doing that this weekend for sure. Also, this may be BS, but another member posted up that he has tested many oil injectors on RX7's and on RX8's using the FSM method and that only about four have passed. Do you guys think that is true? I have 118,000 miles on mine, I am wondering if I should just replace them.

 

Well, seeing as how the OMP is a positive displacement pump, I don't know why you would do that.

 

Sometimes.....................

Wonder how you would drill around the check valve?

 

have yall seen the S2 omp nozzles?
OD

 

Nope. Are they interchangeable?

 

you need to look at them.
OD

 

Okay, so I finally removed the OMP, lines, etc. Two of the lines are all clogged (119,000 miles) and two were cracked in the middle and dry rotted. Luckily one of our local members is a tech and got me amazing prices so I ordered the four hoses and new oil injectors.

I am so glad I premix 1oz per gallon. I hope it was enough to prevent any damage. Luckily I have not been driving a lot since I started noticing the SOHN reservoir not draining as usual.

 

Good catch! I've been wondering what has happened since you noticed the lack of sohn oil injection.

In my rx7 i pre-mixed 1/2 oz per gallon, and that engine saw redline all day every day, never missed a beat. I wouldn't worry about it if i were you. IMO cold starts in 0-20 degree F weather probably causes more apex seal wear than less than adequate oil injection.

 

Yeah two of the lines I could not even blow through, they were clogged bad. You could snap the hoses easily with your fingers they were so dry rotted. But I expected as much, these hoses and injectors have out lived two previous motors.

I am lucky that I don't deal with real cold starts. The car is garaged and it does not get cooler than 50F in there. But I run 0W-40 anyway and I never drive her away cold.

 

How many total miles on the OMP lines? I've always known OMP got real brittle over time, but figured mazda would update the material to last quite a bit longer than the previous generations.

And what do you think clogged the lines? The oiling system is pretty contained in this engine...

 

Doesnt the engine throw a code when the omp is not pumping?
Time for me to check mine again anyway--but thanks for sharing man.
4 small ss lines would look sick--if it could be done?
I agree with Sleepe about 1/2 oz--1 oz premix and no omp.
I dont think anybody actually has proven with hard data which way is the best?

 

Does anyone have a spare sensor(potentiometer)-the black one that is held on with 2screws? I had my engine in the back of a van and it tumbled over and broke it right off.

 

No.

 

lol, if you are pre-mixing 1oz/gal the only reason to even have the OMP around is to keep the PCM happy with the positioner signal. That's multiple times more oil than the OMP discharges even if it ran at the 100% open position continuously.

 

Sometimes you make a lot of sense Team .

 

The OMP lines, pump, and oil injectors have 119,000 miles on them. They were moved at 22k to a Mazda Reman and then again at 96k to another Mazda Reman. I am not sure what could have clogged them, I have been running the SOHN for over a year using Kawasaki 2 stroke and Idemitsu in a sealed reservoir. And I have always changed my oil religiously so I don't think dirty oil was a factor. The OMP and the SOHN adapter were full of nice clean Idemitsu.

I never got limp mode or a CEL.

That's good to hear, I thought of just blocking off the SOHN adapter inlet but never had the ***** to do it.

 

Since you brought it up I almost posted that the whole point of the Sohn Adaptor is so you don't have to pre-mix. If it's your intent to pre-mix regardless you don't need to bother with it and the accessories i.e. K-I-S-S. There was also no need to replace those OE parts pre-mixing at that level. There's a lot of yammering about the S2 OMP and added injector ports, but rarely does anyone point out that it's all moot if you run heavier premix ratios. At that mix level you have more oil going in over a wider distribution area than the OE system will ever have.

 

What sensor do you need; where on the engine?

 

Thanks, I think I'll replace the parts and consider the information. Maybe just premixing is the way to go.

 

Two good posts in a row - must be some kind of a record .

 

understand that Mazda has emissions and cat converter life in mind, plus most people consider pre-mixing on a street vehicle to be an annoying PITA