Easy_E1

iTrader: (2)

And when you finally get the engine out,, take a look inside.
JK

swoope

iTrader: (5)

big *** vacuum leak. and please check the throttle body itself.. the front side.. almost sounds like is is gummed up, with a big *** vacuum leak..

as i said before i am not that far away. and have lots of the extra parts laying around..

beers

Rachlayyy8

haha theres so much going on :[ but thank you so much for coming together and helping!!!

swoope

iTrader: (5)

really,

when the troubleshooting is done. i likely have the parts.. it is good to know that is runs.. that is the big step.

the rest is cheap.. btw, not looking for money. just want to save an rx8..

beers

Kane

iTrader: (1)

I would go the with throttle being fubared or Jet air hose being plugged which will cause an over rich situation since the fuel is not being atomized.

let the vacuum leak go and she where she lies...

Race Roots

iTrader: (64)

Yeah I PM'd Mazsurfer the same thing.....

Mazurfer

Sorry.......just getting up this morning. There were none..........that I am aware of. Bastage was on the inside and we did constantly check. Hope he can back me up on that statement of none. The no codes really, really got me. I was expecting something and we probably had it running for upwards of 15-20 minutes.

Mazurfer

Whole intake assembly was connected as usual except that the hose from the oil filler neck was off and the other one closest to it(to the air pump?), so this really could have caused a lot of the issue......I suppose??????? We did not cap off that second hose on either end. This would for sure make it unmetered. I know it takes three things for combustion and we could have been missing a whole lot of one.......oxygen.

If I go over again, I will for sure take the accordion tube off, check the MAF, put on hose connectors, check all connections I can get to, look into the throttle body, etc.
We just ran out of time.

If O2 was fried, we should got a code.......I would think??? But we did consider this as well as a clogged kitty.

In terms of fuel with relay out. I've never flooded one before, so I can't say for sure if fuel was still flowing, but I can say this.........with relay out and foot off the pedal, we would see seepage(some dripping run down the block) out the plug holes when cranking. If he held the pedal to the floor(again.....without relay in) we really wouldn't see that same seepage. We saw this more than once and at various stages.

Mazurfer

Leaning this way(Air).......wish we would've had mo time! I need to look into the Pedal position sensor, but to be honest.....she said it ran one day and not the next. I feel that was the initial flooding........then they started changing the above as you stated, somewhere in here is when the hose connections got broken. Then Bastage and I showed up. Yeah we gotta take that intake tube off and give a good looksee, but for sure fix that air hose.

Mazurfer

Noted............but they never got it running after initial flood couple of weeks ago...........and when we did, it was right off the bat that he had to keep it almost floored.

Mazurfer

Funny.......if it comes to that, we'll really need help!

Mazurfer

Well...............if that second hose on the intake is the jet air...........then we didn't have it because that elbow was busted off. What I wouldn't have given for a 13-758 elbow! I should have used a straw and shoved it in both ends just to have some flow.


Really need to start there, but I would still pull the intake off and look into the throttle body and assess it.

Mazurfer

Thanks....I feel better. We both felt defeated when we left, but we knew that getting it to run was a HUGE step...........and may signal that the motor is okay. Mighth be too early to say that, but.............................

Bastage

iTrader: (1)

I was constantly looking at the gauges to check at the RPMs. NO CEL after the initial U0100.

Could a clogged cat cause this? We didn't see as much smoke as I thought we would once we got it running, so maybe there's something to that. But we'd get a CEL light though, wouldn't we?

Mazurfer

Damn it man.............we're Engineers not Mechanics! (Insert Engineer jokes here!)

I was gonna mention the somewhat lack of smoke when first got it started, but there was some......it was white......wasn't overwhelming, but then again......I have never seen a flooded car start or one that has been Seafoamed. Again, someone did seafoam it a couple of weeks ago when they were trying to get it going, but that was weeks ago.
We thought it was a fuel starvation problem, but after reading all replies, thinking about it, and my own research...........I think it's getting too much fuel in relationship to air and that's why it failed after the first start up, we had to deflood again, and after we got it to restart............you ran it up the block and back at the blistering 3mph with it floored, then it wouldn't restart..............flooded again. It can't burn all the fuel as it's super rich.............make sense?

Wish this thread was re-titled now and moved to a different location so that more would see it, but that might also add to the confusion. Fred?

Keep it coming guys and thanks for all your help. I think it's just gonna take more time with the car and our time is limited.

Mazurfer

I would think so.
We need to remember that they also did something or replaced the "crankshaft position sensor thingy" which I think she meant the E-shaft sensor plate, but I did do the 20 brake tap when I first turned the car on before we even really started and the gauge did sweep like it should. This kinda told me the PCM was at least there(at that early point). We do need to keep this in mind however.........I'm assuming the plate is on right????????

Easy_E1

iTrader: (2)

I suppose that if the CAT was clogged it could give you an issue. But the way it's acting it would have to be solidly plugged. And I think you would get a CEL.
Still seems to me that there is an issue with the engines Air intake.

Keep us posted.

Rachlayyy8

about the sea foam part it ran fine after we sea foamed it, and i ran it for prob 2 or 3 weeks after we sea foamed it...

zoom44

no believe it or not there are plenty of times when there is a bad o2 and cooked CAT with no CEL. there is one right now in the Tech section. also a year or so ago Darrin- DMP here- had an obviously clogged cat that a tech refused to look at because no cel. he went to another person who opened it up and the ceramics fell out in little bits. there are pics i posted long time ago with a finger poking inside an empty cat-no cel

You need to make sure that eshaft sensor is on correctly and isn't fouled with any debris on the sensor on in the connectors. Dannobre even had one he had to shim.

https://www.rx8club.com/showthread.p...im#post2705549

there was a turbo 8 yesterday on the Dyno which clearly had a clogged cat -could smell it and see it in the dyno run- no cel.


edit: well that T'd one could have been because of the Cobb but you get the point.

Kane

iTrader: (1)

Get that intake squared away - double check the cat, and the TP sensor via the scangauge. And you should be good to go.... hopefully.

Any large unmetered air leak like the jet air or even the omp will make the car virtually impossible to run or drive.

ShellDude

iTrader: (12)

sorry to go OT, but I'd been curious about this lately... the OMP flow rate is vacuum based? does that account for throttle position, load, or both?

Mazurfer

Yeah..........I think the next step is to obviously get that intake squared away.
If I am able to get back there, I will take the accordion off, possibly clean the MAF, look into the throttle and see what I find. Clean all connections or at least try and test them. If I'm going that far, I will probably pull the pulley off and look into the Eshaft plate, sensor, etc.
If that doesn't yield any results then it probably time to yank the cat.

Mazurfer

Thanks, I did err when I said that didn't I?......I forgot Oooops!
Well......so now we know it ran after the seafoaming. Didn't think that was the issue anyway, but have to tell these guys all the info...........and hopefully not wrong info like that was. My bad.

TheBag

Hey everyone I am new to the forum and to this thread but I have read everything and become very intrested in it. I would agree that it has got somthing to do with the cat. That would def explain massive loss of power while in or out of gear. And this may be comming from left field but the CEL may not be on due to the car loosing power and the computer resetting. She said that it was sitting for a month. Anyway this thread has confirmed that this is a great community.

Mazurfer

Well now............after some research the somewhat non-standard P0100 code is listed as this................P0100--P0100 Mass or Volume Air Flow Circuit Malfunction. While I don't think it's the overall issue with the car and we know it's most likely related to that hose being busted off.....we need to fix it and check the MAF before moving forward with anything else.
Think that could've caused how the car acted after we got it started?