Hi, im looking into buying a 1993 twin turbo for a very cheap price. The reason its cheap is cause the owner says that the spark plugs fowl after only 30 miles... What could the problem be? Thank you for your time.

 

Motor might need a rebuild, thats the one from Maui right?

 

could be leaky injectors

 

Leaky OMP injectors? I highly doubt that. I have never ever heard of an OMP failure like that..please don't guess it could lead to somebody wasting money.

Its entirely possible that the motor has internal oil seal failures causing it to leak oil into the housing, fowling up the spark plugs easily.

This depends on milage, heat range of spark plugs ( you need proper OEM plugs to burn off all the oil) and other factors.

 

lol, first of all, I didn't even mention the omp. Second, when plugs are fouling that is often FUEL related. put 2+2 together and you could safely asume Iwas talking about the "FUEL INJECTORS".

This really deserves a second look lol.If the car has an internal oil leak it will smoke... a lot. Your GUESS is entirely improbable.

 

ya its the one from maui. So you guys dont think i have to get a new engine just re-build it? Cause im fine with that, a good re-built kit w/ apex seal is only like about 1500 an engine is like 3000. thanks for the speedy response guys. Ill probably get it and when i have more specific details on what up with the car ill let you guys know. So do you guys think i should get it? Is for sale for 7500.

 

7500 is pretty cheap. See if he will have a compression test done for you. It's possible the motor isn't damaged at all. how old are the ignition components?

 

My thoughts are that you should plan for the worst and then see if it is worth it for you. So say its $4k for rebuilt + labor you then have $11.5 for a '93 automatic touring model. Not exactly cheap but not bad for all original with low mileage...

 

ya good point. But like you said its the original. And if i do have to spend 4000 re-building it i know it'll be new quality parts thats getting put into it. And the whole automatic thing will change one i get all the bugs worked outta it. But right now i just want it to be able to drive lol. But back to the point i should get a compression check done to see if the motors good. Worst case i have to buy a new motor whats a good website to shop on? Thank you for your guys time. your all alot of help!

 

Keep in mind that if the motor is torn up, most likely a lot of other things are also torn up as well. Buy a cheap FD is like buying a lottery ticket. You could hit it big, but most likely you aren't.

Unless you really understand what you are getting yourself into, and I don't believe you do, you should get a RX7 which is in good condition and running. While it will cost you more up front, you'll spend a LOT less in the long run.

 

lol...."don't guess, it could lead to someone wasting money...."
Well frankly, that is ALL you are going to get by posting a question on an Internet forum for God's sake! It is not like we have the car in front of us to look at, nor a complete description/diagnosis of the entire problem, we are dependent upon the poster to provide as much information as possible.
So, all ANYONE can do is make educated "guesses", and try to point out possible failure causes.

 

Never say never!! I have had 4 cars(3 customers when i lived in Hawaii, and my own ) All have oil Injectors FAIL and just pump oil into the intake. It blows it thru the vaccum lines that go to the filtered intake on the primary. On mine it was to my single. Soo never ever for you is not until now Telling people it can never be this is a bad way of helping people troubleshoot.

As for the rest of it.. As said it is a gamble if you don't know what is up with these cars or have someone that does. I would love to hook you up if I were still out there. I don't know of any shops on Maui that work on Rx's. Hypersports on Oahu built one, but I donot know much about there general rotary knowledge.As for a source for a new motor... If you want a stock motor for cheap I would use Ray Crowe from Malloy Mazda. 1-888-533-3400 I have had him ship me numerous engines when i was in Kona. Great to work with, and it was only like 200 shipping total i think for the engine. And you know how$$ shipping to the islands can be.

Good luck, Pm me with any questions. I love helping out the old home rx7's

 

ProjectD, whatever I really don't care about what you have to say or do I care about arguing on the internet. My mentor has at least 30 years experience in the field of rotaries. Originally I thought you were talking fuel injectors, but because they DO NOT LEAK, I assumed you were talking about the OMP system.

 

Injectors do not leak? If that were only true...

 

Electric, Look noob, If you don't like hat I have to say, then you are more than welcome to ignore my posts. And if you don't like arguing on the net then keep your opinions to yourself. This is a public forum and the OP is asking for advise, And like someone else said All we can do is try our best to guess what his issues might be. Just because you have some super rotary guru with uber experience mentoring you sure as hell doesn't make you an expert. BTW you are making him AND yourself out to be a couple of idiots. " Injectors DO NOT LEAK." .......what a joke

 

I know im getting into alot, and im probably going to put alot of money into the car. But i've always loved the rx-7!!! And now that i've got the chance to actually own one im going to take it!!! And I just want to learn as much as i can about the car and be able to help others like you guys are trying to help me. Lol i know it sounds cheesy! But really thank you guys for your troubleshooting. I know i dont have alot of info on whats wrong, but once i see the car ill get the compression check to see ifthe engines good or not and then go from there.

 

Electric, your posts remind me of an old Will Roger's quote:
"When you find yourself in a hole, quit digging"

Statements like "fuel injector's don't leak" are just displaying your lack of knowledge.
And arguing with ProjectD is not smart. He is very knowledgeable about these engines, as he rebuilds them on a regular basis.

I would suggest you take a copy of your posts back to your rotary guru and show him. I think you will be in for a little embarrassment.
BTW, it's spark plug fouling, not fowling. That would have something to do with birds not rotaries.

 

Get A new mentor!!

 

Well your mind seems pretty set so good luck on the project