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Hey everyone, I'm a new rx8 owner &unfortunately I'm not a very mechanically savvy dude. I have an issue with my car, the issue is, once I turn on the car all is well, nothing bad happens and i can drive it normally until about 5 or 6000 rpm
once i get to that rpm I notice a resistance and bogging. I'm assuming it the fuel injectors, I just changed the spark plugs and coils because I flooded it. I'm hoping the injectors will fix the problem, however I'm worried it wont. Does it sound like injector problems or fuel pump problem? I really dont know what to make of it & the mechanics I talked to also arnt exactly sure. They wana test 100 things to find out. Can anyone relate and please help me.
PS. My car is 2010 & only had 78500 klm on it. However the cat was removed. But I dont think that's the issue here.
Thank you!
Last edited by RotaryFTW69; 11-22-2019 at 11:23 AM.
Its your SSV or VDI solenoid more than likely. I had the same problem a while back. Just need to change out those 3 solenoids and should be good. Also, make sure to check your SSV and VDI actuators to make sure they can move and aren't frozen. The solenoids are located behind the upper intake manifold.
They wana test 100 things to find out. Can anyone relate and please help me.
Thank you!
Testing is preferable to replacing components blindly. However, you probably want to bring it to a shop that is familiar with rotaries or Mazda. Random mechanics have no idea how to troubleshoot these cars and can do more harm than good. This doesn't sound like an injector problem, to be honest.
Why was the cat removed? Personal preference or was it clogged?
Definitely sounds like the solenoids there.
Is the check engine light on and what are the codes if so?
Why was the cat removed? Personal preference or was it clogged?
Definitely sounds like the solenoids there.
Is the check engine light on and what are the codes if so?[/QUOTE] Personal preference, I bought it like that but I didn't mind it being removed. I'll check today and get back to you! Thanks everyone
The ssv is activated at around 3500 rpm. At 6250 rpm the auxiliary port valve is activated. Not by vacuum but by the electric stepper motor on the lim. This could be the problem.
Hey guys, so my work has been so busy they couldn't really work on my car, I ordered the fuel Injectors anyways just so I could have new ones. I'd like the add the following information. So I know you guys said it could be the Solenoids, so I'll check those next forsure! I forgot to add last time that at 5000 rpm ish I hear this weird sound, idk how to explain the sound but it's almost like something knocking or like ticking something... it's weird, it doesnt happen when I rev it to 9000 rpm in neutral, only happens when driving. Also the car car rev to 9000 rpm in neutral once or twice but after a couple times its starts to bug out and the cel flashes. Once that sound happens the bogging and heavy resistance begins. Then the CEL light starts flashing. So hopefully this info helps you geniuses:p thanks again everyone for your opinions!!!
It will rev fine to 9000 in neutral because there is no load on the engine. The flashing CEL indicates a misfire. If it is happening under load, you likely have an issue with the SSV. Were you able to get any codes? This will help us greatly to diagnose additional issues. Misfires usually attributed to clogged catalyst or poor ignition system. The fact that its bogging at 5k RPM indicated an SSV issue which is typically the solenoids. Likely though you have other issues besides the solenoids.
Last edited by CaymanRotary; 11-25-2019 at 02:47 PM.
I'm pretty sure the ssv would be open well before 5000rpm. It opens at 3500 rpm. Only thing that opens that high in the rpm (6250 to be exact) is the aux port valve (APV). And that valve doesn't have a solinoid. It has an electronic stepper motor. You can feel the power increase when the APV opens.
When it starts acting up like all sluggish and resistant it sounds like limp mode due to omp failure.
Hey guys, so my work has been so busy they couldn't really work on my car, I ordered the fuel Injectors anyways just so I could have new ones. I'd like the add the following information. So I know you guys said it could be the Solenoids, so I'll check those next forsure! I forgot to add last time that at 5000 rpm ish I hear this weird sound, idk how to explain the sound but it's almost like something knocking or like ticking something... it's weird, it doesnt happen when I rev it to 9000 rpm in neutral, only happens when driving. Also the car car rev to 9000 rpm in neutral once or twice but after a couple times its starts to bug out and the cel flashes. Once that sound happens the bogging and heavy resistance begins. Then the CEL light starts flashing. So hopefully this info helps you geniuses:p thanks again everyone for your opinions!!!
Please get the engine OBD codes read. They should narrow the problem right down.
I'm pretty sure the ssv would be open well before 5000rpm. It opens at 3500 rpm. Only thing that opens that high in the rpm (6250 to be exact) is the aux port valve (APV). And that valve doesn't have a solinoid. It has an electronic stepper motor. You can feel the power increase when the APV opens.
When it starts acting up like all sluggish and resistant it sounds like limp mode due to omp failure.
all I know is that I had this exact problem caused by p0661 and changing the solenoid worked and car was fine once again. That solenoid is vital the the correct operation of the SSV.
One was 0420 / cat converter, the other was a misfire code.
The p0420 is normal because of cat delete. Since theres no way it could be clogged I would suspect the ignition system. Test your coils, test your spark plugs and ignition system thoroughly.
11-22-2019, 11:21 AM
