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Suffering From a Misfire? START HERE.

Old 05-21-2018, 11:26 PM
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99% sure there is no cat, just a resonated midpipe. The exhaust has an aftermarket header and is a full exhaust back. Why get ride if the intake? And what is the 20 brake pump I keep hearing about?
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Old 05-21-2018, 11:43 PM
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intake is garbage (i had one) and takes in hot air from the engine bay and can cause idle issues. key on hit the brake pedal 20+ times really fast, when dont right the oil needle on the gauge cluster will sweep from side to side. it resets the ess iirc which you should also clean. please go read the new owners threads to understand your car better
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Old 05-21-2018, 11:46 PM
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Alright Iím going to try this tomorrow Morning will let you know how it goes. Thanks!
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Old 05-22-2018, 11:48 AM
  #354  
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I would suggest disconnecting your exhaust at the header and letting it hang, then run your car and see if there is any change. it's only 3, 14mm nuts and easy to get to. This would rule out any type of clog in the exhaust.
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Old 05-22-2018, 04:06 PM
  #355  
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For the intake, the most cost effective thing to do is grabbing an OEM intake system from a junkyard. There are only 2 aftermarket intakes that are known to make (a tiny amount of) extra power, and K&N is not one of them. And K&N filter oil can irreversibly damage your MAF.

The Eccentric Shaft Sensor(ESS) is a magnetic sensor that's beside your main crank pulley. It looks like a little cylinder. Since it's magnetic, it can pick up some metallic bits and throw off the reading. The earlier 8s are especially prone to this since the cylinders are more exposed. The later 8s have a shield around the sensor.
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Old 05-30-2018, 09:54 PM
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Alright guys so its been a while... I know lol I changed my MAF sensor today... no difference! but I checked that off the list of problems it could be. Iím really leaning toward the o2 sensor being bad as itís getting worse so fingers crossed. I really donít think itís compression but Iím going to do a compression test on it tomorrow as well just to make sure. I will keep you guys informed!
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Old 05-30-2018, 09:54 PM
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Alright guys so its been a while... I know lol I changed my MAF sensor today... no difference! but I checked that off the list of problems it could be. Iím really leaning toward the o2 sensor being bad as itís getting worse so fingers crossed. I really donít think itís compression but Iím going to do a compression test on it tomorrow as well just to make sure. I will keep you guys informed!
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Old 05-30-2018, 11:13 PM
  #358  
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Originally Posted by allerellie100 View Post
Alright guys so its been a while... I know lol I changed my MAF sensor today... no difference! but I checked that off the list of problems it could be. I’m really leaning toward the o2 sensor being bad as it’s getting worse so fingers crossed. I really don’t think it’s compression but I’m going to do a compression test on it tomorrow as well just to make sure. I will keep you guys informed!
Usually, MAFs don't go bad. Did you actually have K&N oil on it?

Don't throw parts at it. Try the cheap, free stuff first. Did you clean the ESS and perform the 20-brake-stomp? This is free.

Another thing that I noticed when I was reading the previous posts: when you said "oil in your gas", you meant 2-stroke oil, correct? 4-stroke oil in gas is a good way to destroy your fuel injectors.

Last edited by UnknownJinX; 05-30-2018 at 11:17 PM.
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Old 05-30-2018, 11:26 PM
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Yes correct, 2 stroke oil. I had a code go off saying my MAF was bad after cleaning it so I went ahead and replaced it. It didnít change anything but I do have a spare now so thatís nice and Iím just trying to cancel out what could be causing issue. Iím going to clean my ESS sensor tomorrow first thing before I check my compression.

Now i will explain in depth how the car is running. So it idles around 1k pretty good but sounds camíd over. When driving it, if you are smooth on the gas it acts fine... but if you get on the gas aggressive in anyway it acts as if itís flooding out. Bogging kinda? Very strange exhaust note, almost like Iím driving a v6. Throttle response is there but not great. I noticed when driving to my grandpas house today (he has a car lift) when cruise was set it was kinda pulsing up and down a bit.

I hope this helps explain the symptoms a bit more. Thanks for the help guys I really appreciate it! I race ATVMX Nationals so when it comes to race quads and dirt bikes I know them like the back of my hand but man this rotary is a very different beast! What a learning curve!! Lol
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Old 05-31-2018, 04:42 PM
  #360  
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Originally Posted by allerellie100 View Post


Now i will explain in depth how the car is running. So it idles around 1k pretty good but sounds camíd over. When driving it, if you are smooth on the gas it acts fine... but if you get on the gas aggressive in anyway it acts as if itís flooding out. Bogging kinda? Very strange exhaust note, almost like Iím driving a v6. Throttle response is there but not great. I noticed when driving to my grandpas house today (he has a car lift) when cruise was set it was kinda pulsing up and down a bit.

I hope this helps explain the symptoms a bit more. Thanks for the help guys I really appreciate it! I race ATVMX Nationals so when it comes to race quads and dirt bikes I know them like the back of my hand but man this rotary is a very different beast! What a learning curve!! Lol
I hope I'm wrong but when I had problems with my cruise control not staying on the set points it was the first sign my compression was bad. Good luck tomorrow.
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Old 07-23-2018, 11:41 PM
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BHR ignition

I've had a BHR ignition for about 7 years, recently it started misfiring, hard to start etc, Charles at BHR really looked after me, even though the product was well out of warranty. Top marks to them. I would not hesitate to reccomend them to any who intend to keep their RX8s
Cheers from Australia, Shane Fullston
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