Originally Posted by Dan Morey
(Post 4885350)
Yes that is the same diagram I found
Originally Posted by WinnipegSE3P
(Post 4885351)
You put seafoam in your gas???? You're not supposed to put seafoam in your gas...
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. |
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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Originally Posted by Dan Morey
(Post 4885359)
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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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. |
Originally Posted by Loki
(Post 4885378)
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. |
Is your post cat O2 sensor unplugged? Because that's basically what it says.
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Originally Posted by Loki
(Post 4885389)
Is your post cat O2 sensor unplugged? Because that's basically what it says.
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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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Originally Posted by WinnipegSE3P
(Post 4885351)
You put seafoam in your gas???? You're not supposed to put seafoam in your gas...
Originally Posted by Dan Morey
(Post 4885353)
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
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It was two stroke
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Help
What all controls fuel pressure on a rx8
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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? |
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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Originally Posted by Loki
(Post 4884946)
Sounds like the injectors are miswired. Common mistake when replacing the engine.
Did it work fine at some point, and then broke, or you bought it like this? |
Still leaning toward injectors plugged in wrong. Or maybe one it a dud and it's stuck open.
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Help
Originally Posted by Red line envy
(Post 4962844)
Still leaning toward injectors plugged in wrong. Or maybe one it a dud and it's stuck open.
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Help
[QUOTE=_JB_;4962874]https://cimg0.ibsrv.net/gimg/www.rx8...4ebeda4994.jpg
I only have two blue injectors and two red ones that sit under my blue ones |
[QUOTE=Dan Morey;4962875]
Originally Posted by _JB_
(Post 4962874)
I only have two blue injectors and two red ones that sit under my blue ones
https://cimg2.ibsrv.net/gimg/www.rx8...edd19c7bed.gif |
Help
So I got them figured out got it to start and run and it ran for about 10 min than just shut down and just cranks over now won’t start again any ideas
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Originally Posted by Dan Morey
(Post 4962880)
So I got them figured out got it to start and run and it ran for about 10 min than just shut down and just cranks over now won’t start again any ideas
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Help
Originally Posted by _JB_
(Post 4962961)
Does it start if you let the engine cooldown or sit overnight?
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Rpm’s are also only around 800 when it warms up
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Have you gotten it compression tested? Even with a generic tester it can tell you if your dramatically low.
Also what are the fuel trims saying while it's idling. |
Generally, if the car drives fine at higher revs when it warms up, then it likely is the compression. Nothing you can do other than a rebuild.
If the car struggles at higher RPM, there is something else going on, like a dying fuel pump or ignition issues. 800 RPM doesn't sound low for warm idle. |
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