How screwed am i? Do i need a new rotor housing?
So i was driving my rx8 at normal street speeds, not redlining or anything when suddenly i started to lose power, and the engine was sputtering and exhaust was "brap"ing but not in the good way. CEL was flashing. I drove it like that maybe 5 miles to my house, hooked up the odb scanner and it read the P0301 code. Cylinder 1 misfire.
Odd but okay, this was around 11pm, no autozone or store open to get parts. Next day. I get new coils, replaced them. Turned on the car, same thing. Removed spark plugs, they were dirty and i cleaned them. Except... the Trail spark plug on the right (if looking at the plugs from the wheel arch) was very hard to remove. The plastic piece of the plug broke, so i had to replace it. I figured might of been corroded or something. I go in to tread the new plug... it doesnt tread properly. It looks as if its sitting slightly off centered, and if i try treading, itll get to half way in and thats it. I dont want to force it, but when i turned it on, it still sputters and smells like gasoline. I imagine the treads on the rotor housing are bad. Interestingly enough, i never had that problem. This weekend i got the car back from the shop who replaced the clutch and SS clutch line, it drove fine for 50 miles before the misfire happened. So do i need to replace that rotor housing, and possibly rebuild the engine while im at it? It has 86k original miles. Unless anyone has any ideas? https://cimg6.ibsrv.net/gimg/www.rx8...f622f8f9e2.jpg https://cimg7.ibsrv.net/gimg/www.rx8...717b0fef15.jpg Some of that stuff is anti seize lube that got smeared off. |
U mean the whole outside portion of the plug snapped off?
Too much antisieze, remove it If you very carfeully put your finger in the hole does it feel like ther are sharp segments in the thread? |
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Any local auto part store should have a spark plug tap kit so you can re-thread it.
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Originally Posted by GK1707
(Post 4741121)
Any local auto part store should have a spark plug tap kit so you can re-thread it.
Originally Posted by neit_jnf
(Post 4740956)
Also those rethread kits are safe and reliable? Not going to have to worry about it coming loose right? |
The thread is M14 X1.25.
If the threads are too destroyed to retap them you can buy an insert to fix the thread. The most common is a Helicoil. But there are other types out there as well |
Originally Posted by dannobre
(Post 4741157)
The thread is M14 X1.25.
If the threads are too destroyed to retap them you can buy an insert to fix the thread. The most common is a Helicoil. But there are other types out there as well basically that right? Well at $25 it sure beats thousands of dollars in a new rotor housing. Thanks for letting me know which one it is. I am still scratching my head wondering how it could of happened considering before the clutch it was fine and dandy. Oh well. Thanks. |
Someone removed a plug that was galled into the socket..it is common if there wasn't any anti-seize on the threads.
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Originally Posted by Jesus Martinez
(Post 4741159)
Helicoil 5334-14 Thread Repair Kit M14 X 1.25in. - Walmart.com
basically that right? Well at $25 it sure beats thousands of dollars in a new rotor housing. Thanks for letting me know which one it is. I am still scratching my head wondering how it could of happened considering before the clutch it was fine and dandy. Oh well. Thanks. Please let me know if you got it squared away, and any tips welcomed. |
Originally Posted by xAgyex
(Post 4741292)
Jesus Martinez, did you fix this yet? If so do you have pictures. I have some what of that issue too. But no check engine light. My threads are messed up, so I have just not changed my plug in about a year. I need to change it and fix the threads but need help.
Please let me know if you got it squared away, and any tips welcomed. |
This is why we always use anti seize and start the threads by hand first. Also don't overtorque the plugs when installing. Its easy to break them off at the ceramic.
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BTW is it really possible to Helicoil a spark plug hole, in situ, with out either removing the engine,
or more likely rebuilding the engine, Any metal swarf that goes into he plug hole is going to kill the housing anyway..? |
Originally Posted by sinkas
(Post 4741389)
BTW is it really possible to Helicoil a spark plug hole, in situ, with out either removing the engine,
or more likely rebuilding the engine, Any metal swarf that goes into he plug hole is going to kill the housing anyway..? |
I recommend using plenty of bearing grease on the thread chaser so that any particles stick to it
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Originally Posted by neit_jnf
(Post 4741454)
I recommend using plenty of bearing grease on the thread chaser so that any particles stick to it
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