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Old 04-12-2019, 11:17 AM
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Originally Posted by Dan Morey View Post
Yes that is the same diagram I found
Still worth re-checking. I've been working on these for years and still managed to goof the connections of two injectors on my last build. Also note that the wire colors and wire tape colors can be hard to determine on some RX8's due to heat-cycling and age. There are also three slight variations of the wire colors, though the one I posted is the most common for the Series 1 cars.

Originally Posted by WinnipegSE3P View Post
You put seafoam in your gas???? You're not supposed to put seafoam in your gas...
Seafoam is fine in the gas, though I wouldn't make a habit of it. I also don't have any data to support the benefit of it either.

For reference, the last set of RX8 injectors I had professionally cleaned came out of a 90k mile car that sat for one year with old gas in the lines. Test results from before and after cleaning showed a 0.5-3% improvement in fuel flow, however the variation was as high as 5% between the injectors; with post-cleaning closing the gap to 1%. While it is good to have as little variation as possible given that most consumer cars do not do per-injector fueling balancing, the fuel flow being less than stock rating by 3% means nothing for a stock car. The factory ECM can adjust fueling by up to 20% to account for injector variance in age, manufacturing and the usual variables like ECT, IAT ,and altitude.

All that is to say that knowing the health of your injectors is a good thing, and should be a given for a car that will be modified, but that the cleaners in a can may be wasted money when you consider that even in poor conditions, the injectors are pretty resilient as long as the fuel filter was kinda maintained and always present.
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Old 04-12-2019, 11:22 AM
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My injectors are all brand new now and they are doing the same thing as the oem ones that were on the car I changed them bec of the problem and nothing has changed
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Old 04-12-2019, 09:18 PM
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Originally Posted by Dan Morey View Post
My injectors are all brand new now and they are doing the same thing as the oem ones that were on the car I changed them bec of the problem and nothing has changed
so just got the car to finally start and the only way it stays running is if you keep your foot on the gas and only code coming on is o2 sensor bank one sensor 2????????
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Old 04-13-2019, 08:44 AM
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What's the code? That's the post-cat sensor. It has a number of different codes.
Some make sense if you're running rich. Others indicate a problem.
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Old 04-13-2019, 11:30 AM
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Originally Posted by Loki View Post
What's the code? That's the post-cat sensor. It has a number of different codes.
Some make sense if you're running rich. Others indicate a problem.
p0036
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Old 04-13-2019, 12:22 PM
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Is your post cat O2 sensor unplugged? Because that's basically what it says.
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Old 04-13-2019, 12:23 PM
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Originally Posted by Loki View Post
Is your post cat O2 sensor unplugged? Because that's basically what it says.
no all sensors are plugged in
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Old 04-13-2019, 03:48 PM
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Well then the post at O2 is damaged or the wire to it is damaged. That's what the code means.
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Old 04-15-2019, 03:44 PM
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Originally Posted by WinnipegSE3P View Post
You put seafoam in your gas???? You're not supposed to put seafoam in your gas...
You can, but it should never be used as a troubleshooting procedure. There is no "fix in a can."

Originally Posted by Dan Morey View Post
Yes I put sea foam in my gas why are you not supposed to I mixed oil with it when I did it so it would mess with drying anything out
Not sure if this relates to this particular problem, but did you mean mixing oil with gas? If so, what kind of oil? 2-stroke or 4-stroke? Don't put 4-stroke in your gas tank, ever.
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Old 04-15-2019, 03:46 PM
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It was two stroke
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Old 04-15-2019, 04:54 PM
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Help

What all controls fuel pressure on a rx8
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Old 04-15-2019, 07:05 PM
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The fuel pump has a pressure reg, but another thread made me realize that the pump has 2 speeds. On startup and at idle it runs in low speed mode to keep noise down. Above a certain speed it runs at full speed. This is controlled by ECU, I believe via a switched resistor pack.

What all did you do to get it to start? Like what was different about this attempt than all the others?
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Old 04-15-2019, 07:51 PM
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To get it to start now I have to have someone in the car turning it over while I have the fuel pump fuse out than when it starts I put it in and it just blows big white clods of gas out the exhaust than as soon as you take your foot off the gas it dies
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