HI,

I guess that this matter has already been mentioned somewhere in these treads but still i haven't found what i needed. I would really appreciate if someone could help me!!

I have found a big amount of oil in the upper intake manifold. I have taken the car to my mechanic and he told me that it is normal to have some oil their but i was then more worried when he said that it seems that there is much more than the normal amounts...He also suggested to check the engine from the inside and even a total overhaul of the engine!

Could you please suggest me something? I am really desperate for any clues or help.

By the way my Rx7 is a JDM import and is 1993 model (twin Turbo)

Thanks in advance to all at RX7 CLub!

 

It's probably the turbos going out, not the engine. Do you get any smoke out of the exhaust if you accelerate hard for a while and let off?

Dave

 

Thanks Dave for responding!!

No, the car doesn't make smoke at all..

 

Is there anyone else who can help please? tks!!

 

I still think its the turbos.

Dave

 

Large amount of oil in the UIM?

Pull out your intercooler. Tip it and see if oil runs out of it. I'm betting you don't have a lot of oil in your IC. Generally, you'll have a light coating on the IC pipes but the oil will mostly pool in your IC if your turbos are shot. It sounds like you have something else going on.

What type of driving are you doing with the car?

 

Oh, yeah, it could be entering at the PCV.

In the case of turbos, Mahjik's right - the oil will be all through the intake, esp that low point.

Dave

 

I'll just relate my experience and you can decide for yourself. I had put in a newly remanufactured engine from Mazda. I noticed after a few thousand miles of driving that the car would smoke heavily on cold start ups. I inspected the IC piping and found large amounts of oil in the piping and also had a large amount pooling in the bottom of the IC. With this being a new engine, I logically suspected that my turbo seals were going. Accordingly, I purchased a set of new 99 J-spec turbos (really wanted them anyway) to install in the car. Nevertheless, the problem with the smoking on start up continued. I then began to suspect that something was wrong internally with the remaned motor and took it into a Mazda dealership to start a warranty claim. After a couple of trips back and forth with a mechanic attempting a few superficial fixes, we ultimately concluded that there was an internal problem with the motor. We suspected it was an inner o-ring seal on a rotor that was in wrong or just plan bad. Through the warranty, I was provided a new remaned motor, installed it and have had no problems since. How or why it was getting oil into the IC piping is a bit of a mystery. I just assumed that with a bad oil seal it was just throwing oil around every where.

 

Yes, I would lean more to an o-ring problem with this guy's problem, allowing the oil pan to get pressurized (and most likely push oil through the PCV). However, he says the car is not smoking which is odd.

 

If he doesn't use the engine hard once in a while a lot of oil will build up in the upper intake manifold. Each time you go full throttle for at least 5 sec. it cleans it out. If he doesn't do that, it will build up. This is normal. If he does use it hard once in a while, then there is probably a problem somewhere. I would check the PCV system first. It will suck oil from the filler in certain situations.

 

maybe ur mechanic just wants you to kick him a few thousand to rebuild your motor.

Hey, if it aint broken, dont fix it. I would think its the turbos or somethign small tho. As long as it doesnt constantly smoke.

 

Also make sure your oil wasn't overfilled. Just a 1/2 quart overfilled will add a lot more oil to the intake.

 

Thanks guys !! Your help in the matter is priceless!!

I wasn't using the car for the past few months cause i had to change the clutch kit and had to wait for the parts... I just used to switch on the engine for a few minutes two times a week for at least 4 months. Could that be the reason for the oil build up in the UIM?

The mechanic also pointed out that my air pump has gone too. Could this be related?

Sorry guys but i am not at all technical and i'm practicaly new to Rotary engines.

 

No

No


Are you sure you aren't seeing any smoke out the back of your car while driving? The oil has to go somewhere and it should follow the air and run down the LIM into the combustion chamber. While it will help lubricate the internals it should be more oil than the car is used to burning and should create some smoke while driving.

Have someone follow you around for about 20 minutes of mixed highway and city driving. If you really don't have any smoke, then just clean out the mainfold and the IC pipes, and see if it continues to happen.

 

if your oil injectors have a busted diaphram, they will cause oil to bypass the injectors and go back to the vacuum source, which happens to be the primary turbo inlet. this causes the oil to be sucked into the compressor, and making it go into the intake tract.

take your y-pipe and your primary inlet off to inspect. if the rear turbo doesn't appear to have any oil, but the front is caked with oil, then your injectors are shot. you can buy brand new ones from malloy mazda for around $10 each

 

Thanks Mahjik! I will certainly take your advice but i'm really reluctant that there would be any smoke cause my mechanic has already done this test. He still can't understand the problem for the same reasons you (Mahjik) mentioned.

Spoolin93r1, i will also take your advice and see what i will find... but i am also sure that there's no oil in anyone of the turbos...

The situation is making me feel crazy! ......now we'll see what the mechanic will say too...

Thanks again to all of you!!!!

 

Hi Fellow Maltese RX7 driver.

If you have troubles with your 7 I can offer you the best solution here in Malta. Have you ever crossed over to Gozo at Frank's Auto Parts? This is the real and best RX7 den. There are always one or 2 if not more RX7 at his store.

I live in Gozo and can gurantee you that he can solve any trouble you have. I am always there when I have the slightest of trouble. Many Maltese if not all who have a 7 come here to Gozo to solve their troubles.

There used to be 2 of these experts here but one has just recently flown to New York to settle there.

Just let me know if you need more info.

 

Thanks Vellj001!!

My mechanic has just made some contacts with Frank and he even bought some parts last Tuesday.

Thanks alot for the infromation!!

 

Nothing. Just let me know if you need help or info.

 

I'm having this exact same problem, except I get some puffs of white smoke every now and then when I'm driving. All pipes going to and from the ic are wet with oil and oil runs out of the bottom of the intake elbow. Anybody know of any good rotary mechanics around the NC or SC area?

 

Im having the same issue I'm already getting a new pcv valve and I have a set of turbos on standby but I would like to try this out first. where can I buy new oil injectors I cant seem to find that part anywhere I havent got a response back from Malloy.??

 

Holy thread resurrection Batman

 

Ray Crowe, who was the parts guy for Malloy, is on his own now and still doing great deals and service. You can email him at Crowe.ray@aol.com for a quote on pricing and availability.

Dale

 

I had a similar issue and it was my turbos. They were blowing oil into the intake. You can check the IC and/or intake tubing for oil residue.