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JayCran
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Hello all!

Post by JayCran »

Evening all!
Bought a 2005 rx8 on a bit of whim... It had been sat parked up for a while needed some love, I knew it needed welding and some bits doing, got told it ran before it was parked up and needed some new coils and plugs... however that's not the case #-o , oh well, needs an engine rebuild because it only seems to be running on the rear rotor!
So will probably be a long term project for me, I just need some free time to rip the engine out and get stuck in...
Heres some pics of it looking sorry for itself!
Image
Image
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30405 (Wed Nov 03, 2021 9:57 pm) • ChrisHolmes (Thu Nov 04, 2021 9:10 pm) • HarSc (Thu Nov 04, 2021 11:14 pm)
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Hello all!

Post by GreySilver Beast »

Hi & :welcome: to the RX-8OC :thumleft:

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Re: Hello all!

Post by Shagrington »

Hi and :welcome: JayCran. :) Sounds like you've got yourself a project. If you join the club you'll get access to all the members area of the forum you can't see including links to all the workshop and technical manuals. :thumright:
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JayCran (Thu Nov 04, 2021 9:24 pm)
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Re: Hello all!

Post by Calcifur83 »

:welcome:

You will find endless amounts of helpful people and info here. If it's been sat for a while defo start with new plugs, and inspect the coils. What makes you say it's running only on the rear rotor? If you haven't already, I would also recommend getting an up to date compression test done, that will help give an insight into the health of the engine.

I am sure you'll have a blast putting it right and once it's sorted they are fantastic cars to drive. :thumleft:
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JayCran
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Re: Hello all!

Post by JayCran »

Definitely a project! To add to my list of other projects :roll:
I changed the coils and plugs on it, ran like it had a misfire, if I pull a lead off the front rotor is doesnt change the way it runs so figured it was an issue with that... it's got spark on all 4 plugs. I dont have a proper rotory compression tester just a normal one to give me an idea on what it was like, I cant remember the exact figures I got but I remember the front being substantially lower than the rear one. It's been parked up for a bit now until I clear a bit of drive space to have a further look into it!
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Re: Hello all!

Post by HarSc »

:welcome:


Hmm... :-k

Where abouts are you located? I know there are a few members dotted about that have rotary compression testers and also the specialist rotary garages that have the same facilities to do comp tests for you, if you're close by I'm sure you might be able to get a helping hand at least on the testing side of things :idea:

Definitely seems interesting. If it's running with a misfire, what code are you getting? 300/301/302? Might be worth trying to narrow down what part it could be causing it by swapping one at a time between rotors and checking the code to see if it's followed the change or not.
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JayCran
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Re: Hello all!

Post by JayCran »

I'm near wigan
Oddly when I've scanned it I've got no fault codes, tried swapping over coils plugs and leads and it still stays with the front rotor, going to borrow my mates endoscope sometime and take a look through the plug hole for anything obvious before ripping the engine out I think.

Take a bit to get started when it's cold and almost impossible to start when warm.... normally with a set of jump leads connected and a battery pack for the amount of cranking it needs.... never seen a starter motor take so much abuse before :rofl:
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Re: Hello all!

Post by qwakers »

unfortunately sounds like classic low compression to me.... :(
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Re: Hello all!

Post by warpc0il »

JayCran wrote:
Thu Nov 04, 2021 9:33 pm
Definitely a project! To add to my list of other projects :roll:
I changed the coils and plugs on it, ran like it had a misfire, if I pull a lead off the front rotor is doesnt change the way it runs so figured it was an issue with that... it's got spark on all 4 plugs.
If you pull a lead off either trailing plug then it's unlikely to be that noticeable, as the trailing plugs main role is to get the last bit of power out of the combustion and clean up emissions - yes, I know #-o
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JayCran
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Re: Hello all!

Post by JayCran »

qwakers wrote:
Fri Nov 05, 2021 7:33 pm
unfortunately sounds like classic low compression to me.... :(
Oh well! Kind of looking forward to pulling the engine apart, never worked on a rotory... what's the worse that could happen!
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Re: Hello all!

Post by JayCran »

warpc0il wrote:
Fri Nov 05, 2021 8:32 pm
JayCran wrote:
Thu Nov 04, 2021 9:33 pm
Definitely a project! To add to my list of other projects :roll:
I changed the coils and plugs on it, ran like it had a misfire, if I pull a lead off the front rotor is doesnt change the way it runs so figured it was an issue with that... it's got spark on all 4 plugs.
If you pull a lead off either trailing plug then it's unlikely to be that noticeable, as the trailing plugs main role is to get the last bit of power out of the combustion and clean up emissions - yes, I know #-o
I unplugged the lead plug first and then out of curiosity pulled the trail as well, still made no change to how it ran :giggle: at least I know the rear seems to be doing something
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Re: Hello all!

Post by GrantRL »

Welcome! Lots of helpful folks around