Notices
Series I Tech Garage The place to discuss anything technical about the RX-8 that doesn't fit into any of the categories below.

Possible New Renesis Engine Failure Theory?

Thread Tools
 
Rate Thread
 
Old Jun 22, 2011 | 06:49 AM
  #426  
maxchao's Avatar
Registered
iTrader: (2)
 
Joined: Apr 2011
Posts: 211
Likes: 1
From: SF Bay Area
Originally Posted by Rudolph
This is what I was looking for. Thanks!

Now let's hope I misread the dipstick and the car is actually burning oil...time to drive hard to accelerate the results!
Reply
Old Jun 22, 2011 | 07:43 AM
  #427  
MarkLinRacing's Avatar
FWD specialist
 
Joined: Jun 2011
Posts: 10
Likes: 1
From: Taiwan
Looking at buying and RX8...

How often should the oil lines/OMP/oil injectors be replaced?

(will be my first time owning a rotary!)
Reply
Old Jun 22, 2011 | 07:53 AM
  #428  
Nadrealista's Avatar
Registered
 
Joined: Feb 2011
Posts: 673
Likes: 33
From: Here
Originally Posted by maxchao
Interesting Rudolph. In that case it would justify my slow 4 stroke oil consumption. I had oil change on 6/2, then I premixed 1 oz per gallon when I had autocross on 6/5, and after that I returned to 1/2 oz per gallon. I checked dipstick on 6/9 and I think I might have read the wrong side of dipstick lol so I thought the level is 3mm below full but it might have been 3mm before the 'top' of the wrong side of dipstick. I then took a long distance highway drive ~400 miles and when I returned the oil level is 3mm below full (this time I'm sure). Yesterday I waited an hour after the engine shut off before I checked the dipstick and it's in the same spot. Then I posted here. Then I thought maybe the oil level increases with time so today I checked again and it's at around 8mm below full.

So if 1. I misread the dipstick the first time 2. The oil consumption on highway is really low 3. oil level on dipstick increases with time after the engine is shut off and 4. premix got into the 4 stroke, then it is still burning oil. I have been driving the car a little soft lately because the weather maybe that will contribute as well. Anyway I will change the injector when I get a chance but I guess it can wait a little longer. (moving to a place with garage now. )

Quite a lot of assumption and quite a lot of rambling. Sorry guys. :P
before replacing your OMP injectors I would try to run some seafoam trough them. That might do the trick..use the OMP line from the throttle body boot:

https://www.rx8club.com/series-i-tech-garage-22/optional-ports-seafoam-omp-nozzle-cleaning-217177/


Last edited by Nadrealista; Jun 22, 2011 at 07:58 AM.
Reply
Old Jun 22, 2011 | 09:03 AM
  #429  
9krpmrx8's Avatar
Thread Starter
SARX Legend
iTrader: (46)
 
Joined: Jan 2007
Posts: 33,788
Likes: 462
From: San Antonio, Texas
TX

Originally Posted by Nadrealista
before replacing your OMP injectors I would try to run some seafoam trough them. That might do the trick..use the OMP line from the throttle body boot:

https://www.rx8club.com/showthread.php?t=217177

Reply
Old Jun 22, 2011 | 09:25 AM
  #430  
9krpmrx8's Avatar
Thread Starter
SARX Legend
iTrader: (46)
 
Joined: Jan 2007
Posts: 33,788
Likes: 462
From: San Antonio, Texas
TX

Originally Posted by MarkLinRacing
Looking at buying and RX8...

How often should the oil lines/OMP/oil injectors be replaced?

(will be my first time owning a rotary!)

There is so set answer for this but mine were done at about 124,000. The lines were very brittle and broke and the oil injectors failed testing.
Reply
Old Jun 22, 2011 | 09:47 AM
  #431  
Nadrealista's Avatar
Registered
 
Joined: Feb 2011
Posts: 673
Likes: 33
From: Here
Originally Posted by 9krpmrx8
is picture I posted not clear enough? there is slight vacuum on that line so you can suck in seafoam with it and it should clean the omp injectors..I think doing it is a good preventive maintenance to ensure fully operational OMP nozzles.

from my other thread:
"okay so i tried the OP's idea out and heres my results. I took the vacuum line from the intake accordion that leads to the OMP nozzles. i noticed it had some suction to it but NOT like normal engine idle vacuum from behind the throttle plate. but with my thumb over it it definetly had some kind of suction to it. SO i poured about one tablespoon in it and went to the back of the car and smelled the seafoam being burned so i went and poured about an ounce of seafoam into the vacuum line. the engine started to stumble very slightly so i put my thumb over the tube again and let it build negative pressure and then released my thumb to let the seafoam continue thru the nozzles. Results oil consumtion wise is that my oil level dropped more than normal. BUT by normal that was MY car which has had low oil consumption so now i have stopped premixing and just let it be. as for idle it idles a little higher than 800 now. prior was steady at 775-800ish now its solid above 800-875ish. sorry no compresion tester here."

Last edited by Nadrealista; Jun 22, 2011 at 09:49 AM.
Reply
Old Jun 22, 2011 | 10:24 AM
  #432  
9krpmrx8's Avatar
Thread Starter
SARX Legend
iTrader: (46)
 
Joined: Jan 2007
Posts: 33,788
Likes: 462
From: San Antonio, Texas
Sorry buddy, but have you ever had one of these injectors in your hands? If it fails the vacuum test it fails the vacuum test it is because the internal seals have failed. Putting seafoam in them is not likely going to help fix them and sure as hell will not prevent them from dieing. Not to mention there is no real vacuum there. And even if you poured seafoam down in there I doubt it would have enough pressure to make it all the way through the injector. But I have them laying around, I will do an experiment just for you.

Go back and read pages 1-2 of this thread.

Last edited by 9krpmrx8; Jun 22, 2011 at 10:29 AM.
Reply
Old Jun 22, 2011 | 11:21 AM
  #433  
shadycrew31's Avatar
WENTGERMAN
iTrader: (6)
 
Joined: Apr 2008
Posts: 5,806
Likes: 31
From: Burbs,PA
I slightly free'd one up by spraying it with carb cleaner and letting it sit overnight. Even then it still wasn't completely free, once these things get stuck they are pretty much cooked.
Reply
Old Jun 22, 2011 | 11:22 AM
  #434  
Nadrealista's Avatar
Registered
 
Joined: Feb 2011
Posts: 673
Likes: 33
From: Here
what if they are not working properly due to the oil/crud/carbon deposits..either way it will not hurt him to try it before replacing parts. running seafoam trough the OMP nozzles will clean them and their respective lines. it is simple and easy to do..all it takes is a can of seafoam and some time. I would do it 3 times couple days apart by using the 1/3 of the bottle each time since these deposits can be stubborn and it might take more then one try to dissolve them.

Last edited by Nadrealista; Jun 22, 2011 at 11:28 AM.
Reply
Old Jun 22, 2011 | 11:54 AM
  #435  
9krpmrx8's Avatar
Thread Starter
SARX Legend
iTrader: (46)
 
Joined: Jan 2007
Posts: 33,788
Likes: 462
From: San Antonio, Texas
TX

Originally Posted by Nadrealista
what if they are not working properly due to the oil/crud/carbon deposits..either way it will not hurt him to try it before replacing parts. running seafoam trough the OMP nozzles will clean them and their respective lines. it is simple and easy to do..all it takes is a can of seafoam and some time. I would do it 3 times couple days apart by using the 1/3 of the bottle each time since these deposits can be stubborn and it might take more then one try to dissolve them.

You need to take a good look at the system man, you are missing some info. Even if you can get the seafoam to the injectors (highly doubtful) there is no way for the seafoam to get into the omp lines. Not mention the plastic vacuum block that all the OMP vacuum lines feed off of is also prone to getting brittle and I am not sure how well it would take to having seafoam sitting in it.
Reply
Old Jun 22, 2011 | 12:10 PM
  #436  
Nadrealista's Avatar
Registered
 
Joined: Feb 2011
Posts: 673
Likes: 33
From: Here
read this again:

from my other thread:
"okay so i tried the OP's idea out and heres my results. I took the vacuum line from the intake accordion that leads to the OMP nozzles. i noticed it had some suction to it but NOT like normal engine idle vacuum from behind the throttle plate. but with my thumb over it it definetly had some kind of suction to it. SO i poured about one tablespoon in it and went to the back of the car and smelled the seafoam being burned so i went and poured about an ounce of seafoam into the vacuum line. the engine started to stumble very slightly so i put my thumb over the tube again and let it build negative pressure and then released my thumb to let the seafoam continue thru the nozzles. Results oil consumption wise is that my oil level dropped more than normal. BUT by normal that was MY car which has had low oil consumption so now i have stopped premixing and just let it be. as for idle it idles a little higher than 800 now. prior was steady at 775-800ish now its solid above 800-875ish. sorry no compression tester here."
Reply
Old Jun 22, 2011 | 12:52 PM
  #437  
9krpmrx8's Avatar
Thread Starter
SARX Legend
iTrader: (46)
 
Joined: Jan 2007
Posts: 33,788
Likes: 462
From: San Antonio, Texas
TX

Originally Posted by Nadrealista
read this again:

from my other thread:
"okay so i tried the OP's idea out and heres my results. I took the vacuum line from the intake accordion that leads to the OMP nozzles. i noticed it had some suction to it but NOT like normal engine idle vacuum from behind the throttle plate. but with my thumb over it it definetly had some kind of suction to it. SO i poured about one tablespoon in it and went to the back of the car and smelled the seafoam being burned so i went and poured about an ounce of seafoam into the vacuum line. the engine started to stumble very slightly so i put my thumb over the tube again and let it build negative pressure and then released my thumb to let the seafoam continue thru the nozzles. Results oil consumption wise is that my oil level dropped more than normal. BUT by normal that was MY car which has had low oil consumption so now i have stopped premixing and just let it be. as for idle it idles a little higher than 800 now. prior was steady at 775-800ish now its solid above 800-875ish. sorry no compression tester here."

Whatever man, you are just not getting it. You have never taken this stuff apart so maybe that is why you don't see it.
Reply
Old Jun 22, 2011 | 02:56 PM
  #438  
dannobre's Avatar
Modulated Moderator
iTrader: (3)
 
Joined: Feb 2004
Posts: 13,720
Likes: 344
From: Smallville
The oil nozles have a ball and seat type valve in them....

I had good luck cleaning them in an ultrasonic bath and then carefully blowing them out with compressed air

You have to be careful with the air though..you can easily stick the valve open with too much air pressure. If they don't hold vac...try carefully blowing air in them to loosen the ball and you can be good to go. I had 6 of 8 fail the vac test....and the cleaning got them all working properly. I then used some high temp silicone to lubricate the ball valve So far they seem good to go
Reply
Old Jun 22, 2011 | 03:08 PM
  #439  
9krpmrx8's Avatar
Thread Starter
SARX Legend
iTrader: (46)
 
Joined: Jan 2007
Posts: 33,788
Likes: 462
From: San Antonio, Texas
TX

Originally Posted by dannobre
The oil nozles have a ball and seat type valve in them....

I had good luck cleaning them in an ultrasonic bath and then carefully blowing them out with compressed air

You have to be careful with the air though..you can easily stick the valve open with too much air pressure. If they don't hold vac...try carefully blowing air in them to loosen the ball and you can be good to go. I had 6 of 8 fail the vac test....and the cleaning got them all working properly. I then used some high temp silicone to lubricate the ball valve So far they seem good to go
Yeah I was going to cut one open this weekend just to see exactly what was inside but either way they can't be cleaned by pouring sea foam down the vacuum hose while the engine is running.
Reply
Old Jun 22, 2011 | 03:44 PM
  #440  
Nadrealista's Avatar
Registered
 
Joined: Feb 2011
Posts: 673
Likes: 33
From: Here
I say they can..read in bold letters:

"okay so i tried the OP's idea out and heres my results. I took the vacuum line from the intake accordion that leads to the OMP nozzles. i noticed it had some suction to it but NOT like normal engine idle vacuum from behind the throttle plate. but with my thumb over it it definetly had some kind of suction to it. SO i poured about one tablespoon in it and went to the back of the car and smelled the seafoam being burned so i went and poured about an ounce of seafoam into the vacuum line. the engine started to stumble very slightly so i put my thumb over the tube again and let it build negative pressure and then released my thumb to let the seafoam continue thru the nozzles. Results oil consumption wise is that my oil level dropped more than normal. BUT by normal that was MY car which has had low oil consumption so now i have stopped premixing and just let it be. as for idle it idles a little higher than 800 now. prior was steady at 775-800ish now its solid above 800-875ish. sorry no compression tester here."

it is clear that seafoam was getting into combustion chamber trough the OMP nozzles, hence they can be cleaned with it..
Reply
Old Jun 22, 2011 | 03:50 PM
  #441  
9krpmrx8's Avatar
Thread Starter
SARX Legend
iTrader: (46)
 
Joined: Jan 2007
Posts: 33,788
Likes: 462
From: San Antonio, Texas
TX

Originally Posted by Nadrealista
I say they can..read in bold letters:

"okay so i tried the OP's idea out and heres my results. I took the vacuum line from the intake accordion that leads to the OMP nozzles. i noticed it had some suction to it but NOT like normal engine idle vacuum from behind the throttle plate. but with my thumb over it it definetly had some kind of suction to it. SO i poured about one tablespoon in it and went to the back of the car and smelled the seafoam being burned so i went and poured about an ounce of seafoam into the vacuum line. the engine started to stumble very slightly so i put my thumb over the tube again and let it build negative pressure and then released my thumb to let the seafoam continue thru the nozzles. Results oil consumption wise is that my oil level dropped more than normal. BUT by normal that was MY car which has had low oil consumption so now i have stopped premixing and just let it be. as for idle it idles a little higher than 800 now. prior was steady at 775-800ish now its solid above 800-875ish. sorry no compression tester here."

it is clear that seafoam was getting into combustion chamber trough the OMP nozzles, hence they can be cleaned with it..

Okay If you say so.
Reply
Old Jun 22, 2011 | 08:08 PM
  #442  
dannobre's Avatar
Modulated Moderator
iTrader: (3)
 
Joined: Feb 2004
Posts: 13,720
Likes: 344
From: Smallville
Originally Posted by Nadrealista
I say they can..read in bold letters:

"okay so i tried the OP's idea out and heres my results. I took the vacuum line from the intake accordion that leads to the OMP nozzles. i noticed it had some suction to it but NOT like normal engine idle vacuum from behind the throttle plate. but with my thumb over it it definetly had some kind of suction to it. SO i poured about one tablespoon in it and went to the back of the car and smelled the seafoam being burned so i went and poured about an ounce of seafoam into the vacuum line. the engine started to stumble very slightly so i put my thumb over the tube again and let it build negative pressure and then released my thumb to let the seafoam continue thru the nozzles. Results oil consumption wise is that my oil level dropped more than normal. BUT by normal that was MY car which has had low oil consumption so now i have stopped premixing and just let it be. as for idle it idles a little higher than 800 now. prior was steady at 775-800ish now its solid above 800-875ish. sorry no compression tester here."

it is clear that seafoam was getting into combustion chamber trough the OMP nozzles, hence they can be cleaned with it..

It might help...but it won't clean them out completely. It can't access the area the oil feed comes from....the only real way to clean is the ultrasonic bath...like they clean fuel injectors

Last edited by dannobre; Jun 26, 2011 at 08:38 AM.
Reply
Old Jun 22, 2011 | 08:37 PM
  #443  
WingleBeast's Avatar
HAVOC
 
Joined: Jun 2008
Posts: 800
Likes: 0
From: Afghanistan
as i understood it the vacuum was built from in intake side of that hose... not the OMP side.
Reply
Old Jun 22, 2011 | 09:53 PM
  #444  
maxchao's Avatar
Registered
iTrader: (2)
 
Joined: Apr 2011
Posts: 211
Likes: 1
From: SF Bay Area
Well I will let you guys fight and mean while wait to see if I'm really burning oil...lol
Reply
Old Jun 23, 2011 | 09:00 AM
  #445  
Nadrealista's Avatar
Registered
 
Joined: Feb 2011
Posts: 673
Likes: 33
From: Here
I am going to try it myself. my point is: if you clean OMP whenever you seafoam your car (which should be at least once a year) that will prevent OMP clogging in the first place..just like with everything else prevention is the way to go!
Reply
Old Jun 23, 2011 | 09:09 AM
  #446  
9krpmrx8's Avatar
Thread Starter
SARX Legend
iTrader: (46)
 
Joined: Jan 2007
Posts: 33,788
Likes: 462
From: San Antonio, Texas
TX

Originally Posted by WingleBeast
as i understood it the vacuum was built from in intake side of that hose... not the OMP side.

Yeah well another noob in his thread tried it and it worked. What do you know?
Reply
Old Jun 23, 2011 | 09:30 PM
  #447  
stinksause's Avatar
The Stink w.o The Sause
iTrader: (5)
 
Joined: Jun 2009
Posts: 2,448
Likes: 3
From: North DE
I can see what he is saying ... I think I would agree as long as it is only in the preventative maintenance category
Reply
Old Jun 23, 2011 | 09:55 PM
  #448  
maxchao's Avatar
Registered
iTrader: (2)
 
Joined: Apr 2011
Posts: 211
Likes: 1
From: SF Bay Area
lol I like the way my coworker look at me when I tell them I'm worried that my car is not burning oil
Reply
Old Jun 24, 2011 | 08:14 AM
  #449  
wcs's Avatar
wcs
no agenda
iTrader: (2)
 
Joined: Feb 2005
Posts: 5,210
Likes: 66
From: Ontario
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)
Reply
Old Jun 24, 2011 | 08:37 PM
  #450  
Mazurfer's Avatar
Surf Hard, Drive Hard
 
Joined: Feb 2007
Posts: 7,840
Likes: 13
From: Indialantic, Florida
Think they are N3H114631B, someone let me know if that's not right and I'll delete this post!

Also see................... http://www.jimellismazdaparts.com/sh...&searchString=

Then I found this as well...............



Attached Thumbnails Possible New Renesis Engine Failure Theory?-oil_nozzle1.jpg   Possible New Renesis Engine Failure Theory?-oil_nozzle2.jpg  

Last edited by Mazurfer; Jun 25, 2011 at 08:41 AM.
Reply


You have already rated this thread Rating: Thread Rating: 1 votes, 5.00 average.


All times are GMT -5. The time now is 08:43 PM.