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-   -   Another...How To FIX COMPRESSIONS In Any Rotary Engine with ATF (https://www.rx8club.com/series-i-tech-garage-22/another-how-fix-compressions-any-rotary-engine-atf-170689/)

rickeo 02-26-2012 08:04 PM


Originally Posted by nycgps (Post 4198743)
Just so u know if your engine has worn housings/seals and or springs, no oil can save you

Exactly as it says in the second post in this thread... :sad:

caidoz 02-26-2012 10:23 PM

I've actually been with a couple of guys who have done this on 12A's. Hell my buddy got a 83 rx7 for 500 bucks. The woman said it wouldn't start and he paid 500 for it poured ATF into it let it sit for a little while then hooked up a new battery and drove it away. The look on her face was priceless.

Nadrealista 02-27-2012 09:38 AM

I can only imagine..what was she thinking...

nycgps 02-27-2012 09:54 AM

hahaha. nice.

shit I wish someone in NYC would be that stupid ... so I can get a RX3 for 500 bux ... :lol:

caidoz 02-27-2012 03:14 PM

I live in Ky and apparently it is the mother land for unknowing rotary owners. In the last week two RX8's have come up for sale. Both were under 4000 dollars and both were down due to one needing a new cat and the other needed coils.

SPHINX144 02-27-2012 03:38 PM

I will probably do this tomorrow and hopefully I can report back with positive results. just one question, what needs to be unplugged in the rx8 so that it doesn't start when I crank it?

zoomman 02-27-2012 11:00 PM

i may try it over the weekend. couldn't hurt.... although i hate to have to buy new plugs. lol so darn expensive

SPHINX144 02-27-2012 11:58 PM

Fortunately, I have an old set laying around that I will use for this.

Sephitrask 02-28-2012 10:19 AM

I would use the same method as doing the seafoam treatment.

https://www.rx8club.com/showthread.p...ht=diy+seafoam

the only difference is that you would put the hose into the bottle of atf, since the guy in the diy used an aerosol can. The engine will suck it in while cranking.

SPHINX144 02-28-2012 12:23 PM

I'm doing this right now. How much oil should I squirt into it?

SPHINX144 02-28-2012 12:30 PM

By the way, I only disconnected the eccentric shaft position sensor as for the seafoam procedure since that was easier for me.

Nadrealista 02-28-2012 01:05 PM

did you measure compression before the procedure?

SPHINX144 02-28-2012 01:39 PM

2 Attachment(s)
well I'm done and now I'm really hoping at least I can raise the compression a few units to keep running the car while I get a new engine.

by the way, I just noticed the first picture is sideways. it needs to be rotated 90 deg clockwise lol

Nadrealista 02-28-2012 03:37 PM

wow your numbers are really low..treat, let it sit for a day and repeat with another dose, let it sit another 24hr..who knows maybe it works..you have nothing to loose..

SPHINX144 02-28-2012 03:47 PM

That's what I plan to do. I'll take the car out tomorrow to trash it for a while then I'll do it again next week. I also have half a can left of zoom engine cleaner I will also use. I just don't want to get both fluids mixed inside the engine.

TeamRX8 02-28-2012 07:01 PM

stuck seals aren't the Renesis issue, but best wishes just the same

SPHINX144 02-29-2012 11:12 AM

I just fired my car up after almost 24 hours of rest after using the ATF. It started right up with almost not hesitation, I will go trash it for an hour and see if it starts again once the engine is fully warmed up.

SPHINX144 02-29-2012 02:37 PM

Well I went to drive it hard for about an hour. I noticed the car red lines in third gear much better than before. I would struggle to get past 8500rpms and now I can carry third gear well into 9500rpms. However, my hot start issue is still present.
In addition, I shut off my car at the gym and it didnt start when I tried. It just clicked once and Eveything went dead--light, radio, tach etc. after tinkering with all the fuses--for almost and hour argh--and unplugging and repluging the battery, the tachometer and everything sprung back to life. However, when I tried to start it the same thing happened and everything died again. After several tries with the same result, I reseted the ecu using the brake pedal method and that's how the car started again.

On a side note, I didn't get as much smoke as I expected to hah.

RX7Matt 02-29-2012 02:59 PM

I think FIX is a pretty strong word to apply to the ATF trick. It doesn't actually fix anything, it just gets your engine started by temporarily raising the compression enough to get the engine running. I've replaced the engine on one of my '79 RX7s years ago and also the one in my '91 RX7. Rotary engines aren't that hard to replace, I even converted my '91 from automatic to manual (not that hard either). I wouldn't suggest anyone throwing ATF fluid in their rotary thinking it's doing some good. It's more of a last resort band-aid. It's good for misquito populations though. :flamed:

Matt

SPHINX144 02-29-2012 03:21 PM

Lol, as I said before, my engine revs much better towards the 10000 rpms redline, so it did help in that aspect. I didn't expect it to restore my engine to new, but at least now the cold starts area a bit easier. Anyway, im replacing the engine soon so I might as well try every trick in the Internet before I discard it.

rickeo 02-29-2012 03:33 PM


Originally Posted by SPHINX144 (Post 4201289)
Well I went to drive it hard for about an hour. I noticed the car red lines in third gear much better than before. I would struggle to get past 8500rpms and now I can carry third gear well into 9500rpms. However, my hot start issue is still present.
In addition, I shut off my car at the gym and it didnt start when I tried. It just clicked once and Eveything went dead--light, radio, tach etc. after tinkering with all the fuses--for almost and hour argh--and unplugging and repluging the battery, the tachometer and everything sprung back to life. However, when I tried to start it the same thing happened and everything died again. After several tries with the same result, I reseted the ecu using the brake pedal method and that's how the car started again.

First, the "brake stomp" doesn't reset the ECU, it clears the eccentric shaft plate profile.

http://www.rotaryinsider.com/faq-tac...eset-gap45.htm

Second, have you replaced your battery?

SPHINX144 02-29-2012 08:09 PM

Thank you for the clarification. I knew it wasn't exactly an ecu reset but I didn't know exactly what it did.
No I haven't replaced the battery as it was tested and it's fine. Plus the car car starts almost fine when it's not warmed. I am now certain of the low compression so I doubt a new battery will do much.

zoomman 02-29-2012 08:46 PM

low compression wouldn't cause that electrical issue unless you cranked it till your battery is dead. sounds more like your starter is bad, or a bad cable/connector to your battery somewhere along the line. as far as the hot start issue. join the club..
To comment on that link: i wonder what repairs its speaking of to need to reset the KAM

SPHINX144 02-29-2012 09:13 PM

I disconnected the eccentric shaft position sensor in order to do the ATF treatment-- it might have something to do with that. It hasn't happened again.

zoomman 02-29-2012 10:35 PM

oh ok. ya it may have come loose or something. if u figure out your hot start issue before getting a new engine then let me know.
i can't afford a new engine. so if i can't find a fix soon..to carmax i go


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