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johns first engine replacement T_T

Old Apr 14, 2009 | 12:49 PM
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johns first engine replacement T_T

So I went to have a compression test done, car feels mostly fine pulls jsut as hard as i think it always does oil changed every 3k miles using 10w40 and premixed
i go in say it feels like it lost power just so i can make sure its good and strong...it failed

car is less then a year old but has 30k miles, red lined very frequently. transmission was rebuilt for a dead 5th gear syncro a few months ago.

o well its warranty work. Car is still NA and not turboed yet.


end of rant
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Old Apr 14, 2009 | 02:30 PM
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That sucks man. Hope they don't beat up your engine bay too much. Which dealership is doing the work? Mazda South? Beasley? Premiere?
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Old Apr 14, 2009 | 02:38 PM
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roger beasly. I dont like them usaly as they were the ones that said o your back seats are missing we wont fix your front seat squeaking ....
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Old Apr 14, 2009 | 02:50 PM
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Wow it's a 2007 too. That sucks man. At least you have a fresh engine for boost.
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Old Apr 14, 2009 | 02:51 PM
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not even a year old bought in June ^_^
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Old Apr 14, 2009 | 03:08 PM
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Does it make you want to reconsider going boost ? If so GIMME ALL YOUR BOOST PARTS !
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Old Apr 14, 2009 | 03:12 PM
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lol i was tempted by my friends street ported FD putting 400whp down. It does worry me more though.
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Old Apr 14, 2009 | 03:12 PM
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I know bro!!! mines in for compression test as well.. i am re considering installing my turbo kit on the new motor... if indeed it fails.. i have 57,760 miles roughly.. but no power down low.. after long period of driving i get a tick tick tick sound kinda like a valve shuttering..

good luck john! get the FD!

Last edited by 05rx8mazda; Apr 14, 2009 at 03:16 PM.
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Old Apr 14, 2009 | 03:18 PM
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Just get a really good tune. You will be fine. Nothing is as reliable as an NA, but a good tune can help.
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Old Apr 14, 2009 | 03:19 PM
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lol, o well i have hooked up my boost guage to the manifold to read the vac it was around 16-17inhg not long ago not bad >_> but seemed twitchy

once i get it back again ill hook it up again and see what it reads for my own future refrence
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Old Apr 14, 2009 | 03:19 PM
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as reliable ? it failed na lol
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Old Apr 14, 2009 | 03:25 PM
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Dang man, that's too bad.. So, you just went to the dealer 'just to make sure' and came out with a failed compression? You weren't experiencing any issues or anything that prompted you to do this, right? So, what does this really mean if the car is running fine??
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Old Apr 14, 2009 | 03:29 PM
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the car was having floods on start up which i asumed was weak spark as it would start up after just fine (why i just replaced the plugs)

car had no symptoms, besides being rather weak at the low end side

i had though it was not as powerful as when i first got it one day but i just assumed it was in my head as it pulled fine.
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Old Apr 14, 2009 | 03:33 PM
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ahh, gotcha..so, what year can one 'realistically' assume Mazda has got the engine thing corrected?? Never? I had thought '07's and 08's would be fine. Are 09's having (rather will they) the same problem?
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Old Apr 14, 2009 | 03:36 PM
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id say any after 04 were reliable. It just a randomly out there one. It wasnt complete loss of compression it runs it was just lower then they say is ok
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Old Apr 14, 2009 | 03:37 PM
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same as mine bro!!!!! but yours is newer than mine.. mine started acting up after the oil in the intake system... kinda gurgles around 1-2K rpm.. yours felt muuuch torquier than my ca even wth the cobb unit and yours was stock.. i would have never thouight such a strong motor would fail before mine
well im just waiting on my compression results post yours up when you get them.. ill do the same dude
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Old Apr 14, 2009 | 04:05 PM
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Yeah, there are always the few out there that die due to not 100% good parts. Too bad, though. At least it's a brand new engine! :D
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Old Apr 14, 2009 | 04:40 PM
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man they said they couldnt do compression test because the cat and coils arent the oem ones.. i need to get the stockers on then they said they could do the compression test
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Old Apr 14, 2009 | 04:43 PM
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Originally Posted by CyberPitz
Yeah, there are always the few out there that die due to not 100% good parts. Too bad, though. At least it's a brand new engine! :D
My Mamma always said, "RX-8 is like a box of Chocolates. You never know what you're gonna get."
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Old Apr 14, 2009 | 04:56 PM
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That sucks. I wonder how many out there seem to be running okay but are just on borrowed time?

Mine was running okay but I noticed some things which led me to the dealer. but I am very attune to my car and most drivers are not.

Hey man, make sure you take this poll.

https://www.rx8club.com/showthread.p...highlight=poll
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Old Apr 14, 2009 | 06:22 PM
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so they gave me the car back while they order the engine (since it works fine)

i now have a rattle in the rear of my car ...wtf, reading the paper work they got a cat converter showing up in the ecu... wonder if that rattling is what was my cat converter...

From the sheet:

vac numbers are
baro 3.92v idle 1.98 v ... no idea of conversion here

"compression test shows low compression"
"test drive mode 6 showed a few misfires ... perform decarb...still shows missfires"

so new engine in a few days...
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Old Apr 14, 2009 | 08:03 PM
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lucky they wouldnt do a compression test on mine because they said i had aftermarket coils, and no cat... and on top of that they charged me 110 im sooo pissed
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