Notices
Series I Trouble Shooting This is the place to learn more about or discuss any issues you're having with your RX-8

Starting Issues? START HERE.

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 06-29-2018, 06:13 PM
  #301  
Registered
 
Adam06's Avatar
 
Join Date: Jun 2018
Posts: 13
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by StealthTL
You say you "hear the starter spinning, but the engine isn't cranking?"

That's a starter solenoid problem.
Yes, when I try to start it I simply here the starting motor spinning. While I had someone else crank it I noticed that the alternator, ac compressor and the tensioners still spin. Asfore the actual engine I don’t hear it actually making an attempt to crank.
Old 06-29-2018, 06:34 PM
  #302  
You gonna eat that?
iTrader: (1)
 
BigCajun's Avatar
 
Join Date: Jan 2013
Location: Kansas City, Mo.
Posts: 6,025
Received 2,609 Likes on 2,123 Posts
Originally Posted by Adam06


How do you know? I would suppose that trying to jumpstart it with another car would make up for a faulty battery, maybe I’m wrong?
Because I'm on my 3rd one in 5 years, the last one caused a flood, I had Advance Auto check it, they said it was good, but I knew it wasn't because it kept draining even when hooked up to my booster/charger.
If it's more than 3 years old, buy a new one.
Old 06-29-2018, 10:22 PM
  #303  
Smoking turbo yay
 
UnknownJinX's Avatar
 
Join Date: Apr 2017
Location: BC, Canada
Posts: 3,105
Received 666 Likes on 592 Posts
Originally Posted by Adam06


Yes, when I try to start it I simply here the starting motor spinning. While I had someone else crank it I noticed that the alternator, ac compressor and the tensioners still spin. Asfore the actual engine I don’t hear it actually making an attempt to crank.
That's kinda odd, seeing that everything attached to the engine is moving. If the starter isn't engaging, then nothing should move.

Mind taking a video just to be sure?

Originally Posted by Adam06


How do you know? I would suppose that trying to jumpstart it with another car would make up for a faulty battery, maybe I’m wrong?
Jump-starting is a bit a band-aid fix. Lead-acid batteries love to be charged slowly from a battery charger, not so much with a jump-start with a lot of current.

If you want to be sure, you can take the battery to AutoZone or a similar shop and they can load test your battery, usually for free. It's a good way to test its true health.
Old 06-30-2018, 09:27 AM
  #304  
Registered
 
Adam06's Avatar
 
Join Date: Jun 2018
Posts: 13
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by UnknownJinX
That's kinda odd, seeing that everything attached to the engine is moving. If the starter isn't engaging, then nothing should move.

Mind taking a video just to be sure?



Jump-starting is a bit a band-aid fix. Lead-acid batteries love to be charged slowly from a battery charger, not so much with a jump-start with a lot of current.

If you want to be sure, you can take the battery to AutoZone or a similar shop and they can load test your battery, usually for free. It's a good way to test its true health.
So I had a mechanic come check out my car. He tested the battery voltage and the meter said 12V (he says that’s not the problem but I will see if I can get into buying a new battery anyways.) Also when I told him that I don’t hear the engine cranking he told me to demonstrate, so I was trying to turn it on and he says it is in-fact cranking, that the reason I hear the starter motor over the engine crank is because there is no spark to the plugs. So I told him I already changed the plugs, wires, and the crank sensor. He tested the coil connecter and there was power. Would that leave my only culprit to be the coil? I don’t think they can go out simply by having my car parked.
Old 06-30-2018, 11:19 AM
  #305  
Smoking turbo yay
 
UnknownJinX's Avatar
 
Join Date: Apr 2017
Location: BC, Canada
Posts: 3,105
Received 666 Likes on 592 Posts
Originally Posted by Adam06
So I had a mechanic come check out my car. He tested the battery voltage and the meter said 12V (he says that’s not the problem but I will see if I can get into buying a new battery anyways.) Also when I told him that I don’t hear the engine cranking he told me to demonstrate, so I was trying to turn it on and he says it is in-fact cranking, that the reason I hear the starter motor over the engine crank is because there is no spark to the plugs. So I told him I already changed the plugs, wires, and the crank sensor. He tested the coil connecter and there was power. Would that leave my only culprit to be the coil? I don’t think they can go out simply by having my car parked.
When you say the connector, do you mean the connector that connects to the ignition wire, or the 3-pin connector that connects the coil?

The coils can get weak over time, but it's not common for them to completely fail to deliver a spark.

Have you checked the ignition fuse or relay yet?
Old 06-30-2018, 12:39 PM
  #306  
You gonna eat that?
iTrader: (1)
 
BigCajun's Avatar
 
Join Date: Jan 2013
Location: Kansas City, Mo.
Posts: 6,025
Received 2,609 Likes on 2,123 Posts
How old is your battery?

When you change it, use dielectric grease and felt post insulators.
Check that your terminals are actually tight, they can stretch, and even though the bolts bottom out, they might not be tight, you can use post cap shims if this happens.

After you do that, do the deflood procedure, I'm partial to the removing the fuel pump fuse method.

If/when it starts, do the 20 brake pedal stomp to reset the NVRAM.
(Anytime you disconnect the battery)
Old 06-30-2018, 04:07 PM
  #307  
Registered
 
Adam06's Avatar
 
Join Date: Jun 2018
Posts: 13
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by UnknownJinX
When you say the connector, do you mean the connector that connects to the ignition wire, or the 3-pin connector that connects the coil?

The coils can get weak over time, but it's not common for them to completely fail to deliver a spark.

Have you checked the ignition fuse or relay yet?
I tested the connector that connects to the coil. Yes, I have checked all fuses and relays and they are all good.
Old 06-30-2018, 04:37 PM
  #308  
Registered
 
Adam06's Avatar
 
Join Date: Jun 2018
Posts: 13
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by BigCajun
How old is your battery?

When you change it, use dielectric grease and felt post insulators.
Check that your terminals are actually tight, they can stretch, and even though the bolts bottom out, they might not be tight, you can use post cap shims if this happens.

After you do that, do the deflood procedure, I'm partial to the removing the fuel pump fuse method.

If/when it starts, do the 20 brake pedal stomp to reset the NVRAM.
(Anytime you disconnect the battery)
The battery is not that old, it’s reaching 1 year since since I bought it. I also bought both positive and negative terminals, new and made sure they had a firm grip on the battery.
Old 07-06-2018, 06:28 PM
  #309  
Registered
 
Adam06's Avatar
 
Join Date: Jun 2018
Posts: 13
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by UnknownJinX
That's kinda odd, seeing that everything attached to the engine is moving. If the starter isn't engaging, then nothing should move.

Mind taking a video just to be sure?



Jump-starting is a bit a band-aid fix. Lead-acid batteries love to be charged slowly from a battery charger, not so much with a jump-start with a lot of current.

If you want to be sure, you can take the battery to AutoZone or a similar shop and they can load test your battery, usually for free. It's a good way to test its true health.
How do I post a video on here? Kind of new to this site
Old 07-06-2018, 09:55 PM
  #310  
Smoking turbo yay
 
UnknownJinX's Avatar
 
Join Date: Apr 2017
Location: BC, Canada
Posts: 3,105
Received 666 Likes on 592 Posts
Upload to YouTube and then post the YouTube link here.
Old 07-06-2018, 10:40 PM
  #311  
Registered
 
Adam06's Avatar
 
Join Date: Jun 2018
Posts: 13
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by UnknownJinX
Upload to YouTube and then post the YouTube link here.
Old 07-06-2018, 10:54 PM
  #312  
Registered
iTrader: (1)
 
Loki's Avatar
 
Join Date: Jun 2009
Location: Montreal
Posts: 7,729
Received 957 Likes on 835 Posts
You keep saying "the coil" but there are 4 coils. What did you test exactly?

Is the wiring to the eccentric shaft position sensor damaged at all?

There are 2 scenarios: enough coils are dead that there is no spark to ignite the fuel, or the computer isn't seeing the RPM signal from the ESS and doesn't know to trigger any spark. You say you smell fuel, which means the injectors are firing, which means the computer has RPM signal. So it's down to the coils, it would seem.

Last edited by Loki; 07-06-2018 at 10:59 PM.
Old 07-07-2018, 12:28 PM
  #313  
Registered
 
Adam06's Avatar
 
Join Date: Jun 2018
Posts: 13
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Loki
You keep saying "the coil" but there are 4 coils. What did you test exactly?

Is the wiring to the eccentric shaft position sensor damaged at all?

There are 2 scenarios: enough coils are dead that there is no spark to ignite the fuel, or the computer isn't seeing the RPM signal from the ESS and doesn't know to trigger any spark. You say you smell fuel, which means the injectors are firing, which means the computer has RPM signal. So it's down to the coils, it would seem.
The ESS wiring doesn’t looked damaged. When I say I tested the coils I took one coil off and tested it, as well as the connector that connects to the coil to see if the ECU was throwing power to it, and it was. I told my mechanic to test the ECU just to make sure everything Is good but he says that the battery voltage is low. So I gave the battery a good charge (only charged it for an hour, wasn’t fully charged however) and when I went to try to turn it on it came very close. So he says that I should indeed get a new battery because this old battery voltage is too low to throw a spark. That would seem like the only thing I can do now because the coils are fine, as well as it’s connecters, there’s power reaching coils. I still only changed one coil however, so if I change the battery and still no start than I guess that would indeed be my culprit?
Old 07-07-2018, 02:07 PM
  #314  
Registered
iTrader: (1)
 
Loki's Avatar
 
Join Date: Jun 2009
Location: Montreal
Posts: 7,729
Received 957 Likes on 835 Posts
You neee to verify or replace all the coils. Any 1 of the 4 being dead will kill your engine.

While the battery being low is also a problem, it will be too low to turn the starter way before it's too low to create spark. Also your cranking speed sounds correct. 12V is low, a charged battery at rest should show 12.6 or more.

Last edited by Loki; 07-07-2018 at 02:11 PM.
Old 07-09-2018, 01:40 PM
  #315  
Registered
 
Adam06's Avatar
 
Join Date: Jun 2018
Posts: 13
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Loki
You neee to verify or replace all the coils. Any 1 of the 4 being dead will kill your engine.

While the battery being low is also a problem, it will be too low to turn the starter way before it's too low to create spark. Also your cranking speed sounds correct. 12V is low, a charged battery at rest should show 12.6 or more.
So I took off all the coils and tested them, one was dead so I went to go buy a new one. While I was doing all of that I left the battery to charge some more so it can get to 13v. Went to turn it over yet the same result, no start! All good coils and a 13v battery. I’m guessing now I may have put the wires on incorrectly or maybe the problem is it’s a Mazda (jk always been a big fan of the Rx8 and rx7, just trying to get this damn thing to start!) I looked up the firing order for this so I can get a reference of how the cables go and they’re put on correctly. (First meaning the one closest to the headlight) First coil goes to leading, then second to trailing on the first rotor. Then third coil goes to the leading on the second rotor and the fourth coil goes to the the trailing. Since the spark plug wiring is correct I called my mechanic again and he camp up with the conclusion that it’s the ECU. He rated the coil CONNECTOR (not the actual coil, as I mentioned previously they are all good (with a multimeter of course) and there was one 12V and the rest are ground. He says that with the switch on there is not supposed to be 2 ground. To prove it to me he also tested the alternator CONNECTOR (not the actual alternator), the two inputs were grounded.
Old 08-31-2018, 11:19 AM
  #316  
Registered
 
grybas's Avatar
 
Join Date: Apr 2016
Location: Klaipėda
Posts: 11
Likes: 0
Received 0 Likes on 0 Posts
Hello guys, I have a problem with mine rx8 low powered too and I checked the troubleshooting thread, but I can't find anything similar to my problem. Sometimes it starts instantly, no matter if it's cold or hot and sometimes it doesn't at all, but if I wait for about 30 minutes, it starts like if there was no problem with it at all. After the last time I got this problem, and after waiting 30 minutes and starting it, I got a CEL light, but sadly I didn't have time to check it and I won't be able for 3 weeks more. So I wanted to ask you guys, what might be wrong with it? So I could prepare for a worst case scenario just in case. Also I think everything started after I changed the oil and I have installed a bigger oil filter. Could that be a problem? Or is it just a coincidence?

Last edited by grybas; 08-31-2018 at 11:24 AM.
Old 08-31-2018, 09:11 PM
  #317  
Metatron
iTrader: (1)
 
StealthTL's Avatar
 
Join Date: Mar 2003
Location: A Pacific Island.
Posts: 7,280
Received 173 Likes on 130 Posts
Can you give a little more detail?

Does it 'crank & crank' but not fire up?

Does it just click and not crank?
Old 09-01-2018, 12:25 AM
  #318  
Registered
 
grybas's Avatar
 
Join Date: Apr 2016
Location: Klaipėda
Posts: 11
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by StealthTL
Can you give a little more detail?

Does it 'crank & crank' but not fire up?

Does it just click and not crank?
It cranks without a problem, but sometimes doesn't fire up and i have to wait for maximum of 30 minutes and sometimes it only needs a second to crank and fire up. Also it doesn't matter if the engine is cold or hot.
Old 09-01-2018, 12:31 AM
  #319  
Smoking turbo yay
 
UnknownJinX's Avatar
 
Join Date: Apr 2017
Location: BC, Canada
Posts: 3,105
Received 666 Likes on 592 Posts
Any misfires under hard driving?

I would suspect the fuel pump. Test your fuel pressure.
Old 09-01-2018, 01:22 AM
  #320  
Registered
 
grybas's Avatar
 
Join Date: Apr 2016
Location: Klaipėda
Posts: 11
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by UnknownJinX
Any misfires under hard driving?

I would suspect the fuel pump. Test your fuel pressure.
Also if I gently press acceleration pedal it accelerates better than if I press it roughly to the floor.
Old 09-01-2018, 02:23 AM
  #321  
Smoking turbo yay
 
UnknownJinX's Avatar
 
Join Date: Apr 2017
Location: BC, Canada
Posts: 3,105
Received 666 Likes on 592 Posts
Assuming your ignition components are fine, then that sounds like you could check your fuel line pressure.
Old 09-01-2018, 02:31 AM
  #322  
Registered
 
grybas's Avatar
 
Join Date: Apr 2016
Location: Klaipėda
Posts: 11
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by UnknownJinX
Assuming your ignition components are fine, then that sounds like you could check your fuel line pressure.
I have changed coils, wires and spark plugs 300 kilometers before and got a new starter installed about 1000 kilometers before, so ignition components should be fine.
Old 09-01-2018, 04:26 PM
  #323  
New Member
 
Thomas18's Avatar
 
Join Date: Sep 2018
Posts: 2
Likes: 0
Received 0 Likes on 0 Posts
I need help before I **** a brick

I have an 05 Mazda rx8 shinka special edition. I keep dieing when I leave the car in idle. For some reason the gear **** shakes when started up and I have a feeling this may be the issue, what could cause this? There’s also a lot of gear chatter. I replaced the battery a week ago and added a catless exhaust. The old cat was filled with carbon and was pulling a code. I dont know what to do next. I don’t wanna dump money where it isn’t needed. Heard the airbags and fuel pump and suspension have recalls, does this mean I’ll get the stock upgraded suspension for free same as the other parts? I’m lost as hell and really enjoy the rx8.
Old 09-01-2018, 07:45 PM
  #324  
Smoking turbo yay
 
UnknownJinX's Avatar
 
Join Date: Apr 2017
Location: BC, Canada
Posts: 3,105
Received 666 Likes on 592 Posts
Originally Posted by grybas
I have changed coils, wires and spark plugs 300 kilometers before and got a new starter installed about 1000 kilometers before, so ignition components should be fine.
If you can get the code read, that would also be helpful.

Do you still have a cat? Have you inspected it?

Originally Posted by Thomas18
I have an 05 Mazda rx8 shinka special edition. I keep dieing when I leave the car in idle. For some reason the gear **** shakes when started up and I have a feeling this may be the issue, what could cause this? There’s also a lot of gear chatter. I replaced the battery a week ago and added a catless exhaust. The old cat was filled with carbon and was pulling a code. I dont know what to do next. I don’t wanna dump money where it isn’t needed. Heard the airbags and fuel pump and suspension have recalls, does this mean I’ll get the stock upgraded suspension for free same as the other parts? I’m lost as hell and really enjoy the rx8.
First of all, did you do a rotary-specific compression test before purchase? The bad cat could have killed the engine. Get one before proceeding.

Gentle shaking in gear **** is pretty normal at hot idling. If it(and the whole car) shakes a lot when idling, you might want to replace the engine mounts.

It'd be very difficult to convince a dealer to replace the stock parts with aftermarket parts, BTW. The only upgraded parts the dealer will be willing to add is Mazdaspeed stuff since it's still a genuine Mazda part.
Old 09-29-2018, 07:55 PM
  #325  
New Member
 
michael_p0301's Avatar
 
Join Date: Sep 2018
Posts: 5
Received 0 Likes on 0 Posts
Sucks but looks like I'm going to have join this conversation. I fear my beloved triangle is dead. Just want to confirm:

Background: Was driving around one day when sudden loss of power. Felt like the car was in limp mode and struggled to accelerate over 4k RPM. Cel light starts to flash. I **** my pants hoping motor is still good and limp her home. Park it until I can deal with it. Turns out, it's a misfire code for the front rotor. Ordered new OEM coils, plugs, and wires. Car has always been taken care of - changed oil religiously, checked it etc.. Redline at least twice a day.

Trouble shooting thus far from researching this forum:

1. Replaced OEM ignition coils
2. Replaced NGK spark plugs
3. Replaced NGK spark plug wires
4. De-catted (cat was dead)
5. Cleaned ESS
6. Checked and cleaned MAF
7. Checked my catalytic converter. It's dead. Took it off, de-catted.
8. Checked my wires and made sure everything is where it should be.

On first attempt, car would not start. Had to go through the de-flood process. After about 8 attempts, car starts but will die if I do not keep the RPMs up manually. Sounds very rough.
Check engine light is still on for P0301 - front rotor. I tried swapping coils and spark plugs to see if the check engine light would move to the second rotor. No dice so i am thinking, the front rotor is dead.

Will try to upload a video of the tractor sound. If the car sounds like a tractor - safe to assume it is dead? Going to see if I can check compression somehow with a regular compression tester. Heard there is a way. You run it three times while covering the trailing plugs? Something like that.

Any help is appreciated but maybe it's time for a LS swap. Eating ramen now. This is my 4th car so it's not a big deal if it sits. Just really like the car (surprisingly). Was originally looking for a S2K but couldn't justify the price. Now I know why lol reliable and easy to maintain Honda.


You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Starting Issues? START HERE.



All times are GMT -5. The time now is 07:35 AM.