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misfire...after coils and plugs changed.

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Old 01-30-2008, 10:16 AM
  #76  
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A couple things:

- Did they give you the RPM at which the test was run?
- If they did it with a piston compression checker they wouldn't have been able to give you 3 separate numbers...
Old 01-30-2008, 11:12 AM
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Maybe you should do a compression test yourself. I know it's not as accurate as the "special" tester mazda uses, but it's worth a try.

http://www.banzai-racing.com/compression_test.htm
Old 01-30-2008, 11:19 AM
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Originally Posted by CnnmnSchnpps
A couple things:

- Did they give you the RPM at which the test was run?
- If they did it with a piston compression checker they wouldn't have been able to give you 3 separate numbers...

They said 200 rpm, and IDK what they did really the more I talk to them the more I think they didnt even do one.

nmarz thanks I wanna do that where do I purchase that compression valve? checker/autozone I assume.

Last edited by bose; 01-30-2008 at 11:33 AM.
Old 01-30-2008, 11:22 AM
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Originally Posted by bose
They said 200 rpm, and IDK what they did really the more I talk to them the more I think they didnt even do one.
lol ? exactly 200 rpm ?

I dont think they didnt do it right, they can do it at 200, but meh, it really sounds fishy.

Can you bring your car to anywhere else ?
Old 01-30-2008, 11:38 AM
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Yeah I can take it to another stealer, but this dealer has flagged my vin# so warranty from another dealer probably won't happen.
Old 01-30-2008, 11:40 AM
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Originally Posted by bose
nmarz thanks I wanna do that where do I purchase that compression valve? checker/autozone I assume.
Yeah you should be able to pick one up from autozone, not sure of the quality though. For a "decent" quality one at a fair price you could also pick up a Craftsman one from Sears.
Old 01-30-2008, 12:56 PM
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Originally Posted by bose
They said 200 rpm, and IDK what they did really the more I talk to them the more I think they didnt even do one.
From what I've read on the forums, you either get 250RPM (old starter) or 320RPM (upgraded starter), +/- 5 or so. If they're telling you 200 exactly, something's up. Mine was at 320, and i got 8, 7.9, 7.9 on both rotors, which is pretty terrible.. Dealer says "a-ok"

I'm going to get a gauge and do the test myself just to know it's done right. If I still get the same numbers, I'm going to court, tired of the runaround.

Originally Posted by bose
nmarz thanks I wanna do that where do I purchase that compression valve? checker/autozone I assume.
You can get one from Sears or most auto parts places... You just need to make a little modification to the standard piston ones...
Old 01-30-2008, 01:06 PM
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FWIW, I'm on the old starter and my compression test numbers come in at 230 RPM.
Old 01-30-2008, 01:09 PM
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Originally Posted by bose
Im almost positive they didn't do the test right. cause my compression numbers they gave me are like 6.4, 6.3, 6.5. From everyone I have talked to who has low compression their cars either won't start and if they do start they don't run well at all, loss of power and such. My car feels no different at all, she starts, runs, idles well everything seems great, cel has been gone for 2 weeks. I was reading on how to check rotory compression you need a specialized tester, when I asked the dealer how they did it, they said same as a piston engine!

Yeah I believe the limit in small claims is 3 grand.

Dennis is the tech's name, Bountiful Mazda is the dealer 801-397-2277.
I tried to call but no one is picking up for some reason. Maybe my cell phone sucks calls just cant get thru (trust me it happens, fuxking AT&T/Cingular), I even got calls from someone I dont know when the caller ID shows is from my father. I was like wtf since when did my father speaks spanish ?

Thats why I said it sounds fishy, 200 rpm ? lol wow, they SURE have NO IDEA how to do the compression test right. 200 rpm is possible. but they really have no clue what they're tlaking about. Lemme find u the service manual part ... hold on
Old 01-30-2008, 01:13 PM
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Here you go. Try to tell them to Crank the thing again, they're probably lazy about the removing spark plugs part.
Attached Thumbnails misfire...after coils and plugs changed.-compression.jpg  
Old 01-30-2008, 01:43 PM
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^ Oh, and good luck getting them to understand that chart... Although if you really are cranking at 200 rpm that will work to your advantage
Old 01-30-2008, 01:51 PM
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Originally Posted by CnnmnSchnpps
^ Oh, and good luck getting them to understand that chart... Although if you really are cranking at 200 rpm that will work to your advantage
The graph looks simple to me.

College helps maybe, but Do they even need college to understand that graph ? dealership these days .... are really .... something.
Old 01-30-2008, 02:12 PM
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Let's not go there
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