Got my compression test done.. 72k miles
10-01-2011, 03:33 AM
#1
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Got my compression test done.. 72k miles
Monday I accidentally flooded it after my 4 hour detail and I failed to deflood it myself. So I took her down to the dealer and had them revive her and do a compression test while they were at it... I know people ask for altitude/elevation as well so i guess fresno is 370ft. It looks a little low on rotor 1. Any thoughts?
Excuse the pen written part I used google to convert kPa to kgf.
71,315 miles on original motor!
Excuse the pen written part I used google to convert kPa to kgf.
71,315 miles on original motor!
Last edited by Wind Dance; 10-01-2011 at 03:35 AM.
10-01-2011, 07:49 PM
#10
I would be cautious with those numbers.
At 77k miles, my compression was in the mid 8s then when I hit around 81,000 it dropped to low 7's and one face had 6.7. 1,000 miles later it dropped even more and the dealership's had my car for the passed 2 weeks for an engine replacement. My warranty just expired 9/23 so I barely made it. I'd recommend get a compression test every couple of months depending on your warranty.
At 77k miles, my compression was in the mid 8s then when I hit around 81,000 it dropped to low 7's and one face had 6.7. 1,000 miles later it dropped even more and the dealership's had my car for the passed 2 weeks for an engine replacement. My warranty just expired 9/23 so I barely made it. I'd recommend get a compression test every couple of months depending on your warranty.
10-02-2011, 01:35 AM
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I would be cautious with those numbers.
At 77k miles, my compression was in the mid 8s then when I hit around 81,000 it dropped to low 7's and one face had 6.7. 1,000 miles later it dropped even more and the dealership's had my car for the passed 2 weeks for an engine replacement. My warranty just expired 9/23 so I barely made it. I'd recommend get a compression test every couple of months depending on your warranty.
At 77k miles, my compression was in the mid 8s then when I hit around 81,000 it dropped to low 7's and one face had 6.7. 1,000 miles later it dropped even more and the dealership's had my car for the passed 2 weeks for an engine replacement. My warranty just expired 9/23 so I barely made it. I'd recommend get a compression test every couple of months depending on your warranty.
10-03-2011, 11:32 AM
#15
You must not have done any research before you bought yours if that comes as as surprise. There's so many factors that contribute to a healthy rotary engine (or an engine in general) that you shouldn't assume all/most rotaries "go out that soon."
As was stated above, owners have gone 200K+ miles on their original engines.
As was stated above, owners have gone 200K+ miles on their original engines.
Last edited by sjschutz; 10-03-2011 at 12:03 PM. Reason: unnecessary rudeness
10-03-2011, 11:34 AM
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10-03-2011, 11:36 AM
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10-03-2011, 11:40 AM
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You must not have done any research before you bought yours if that comes as as surprise. There's so many factors that contribute to a healthy rotary engine (or an engine in general) that you shouldn't assume all/most rotaries "go out that soon."
As was stated above, owners have gone 200K+ miles on their original engines. So stop your bitching.
As was stated above, owners have gone 200K+ miles on their original engines. So stop your bitching.
Don't worry, I wasn't going to make a whole new thread about it or anything really serious.
BTW, you shouldn't assume "these engines" refers to all Renesis engines as that wasn't the intent. Perhaps to keep your ire and that of the other fellow off of me I should have said "some of these engines."
Last edited by Harv; 10-03-2011 at 11:45 AM.
10-03-2011, 12:01 PM
#19
Yeah I thought about editing my post and deleting the bitching part. No need for that. I'm just tired of hearing people complain about how the RX-8's engine blows all the time.
Just targeted my suppressed anger towards you since you were the latest post I read claiming that. Just disregard it
Just targeted my suppressed anger towards you since you were the latest post I read claiming that. Just disregard it
10-03-2011, 12:08 PM
#20
To tell someone they are crying or whining about something is a way to belittle the other in the conversation and to minimize their statement.
The engine has caused problems for some, including me, and their claims are legitimate. Otherwise, Mazda wouldn't have extended the warranty as they did.
The engine has caused problems for some, including me, and their claims are legitimate. Otherwise, Mazda wouldn't have extended the warranty as they did.
10-03-2011, 12:15 PM
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To tell someone they are crying or whining about something is a way to belittle the other in the conversation and to minimize their statement.
The engine has caused problems for some, including me, and their claims are legitimate. Otherwise, Mazda wouldn't have extended the warranty as they did.
The engine has caused problems for some, including me, and their claims are legitimate. Otherwise, Mazda wouldn't have extended the warranty as they did.
Since I'm at 60k miles on my 2005 this particular thread kinda hit me with the folks coming in and talking about losing the engine at 77k.
Ah well, that's what the extended engine warranty is for right?
10-03-2011, 09:54 PM
#22
You just did, stopped, then cries again.
I have a feeling some cars getting one engine after another was caused by something else other than the engine. Cuz there are people with no issues at all. I had 1 engine replacement but it's more like it got messed up by early ECU flash.
the extended warranty is more like a "Trust our engines, trust our brand!" thing more than "we got you cover cuz we know it's f-ed up", some ppl appreciate it. some don't.
To tell someone they are crying or whining about something is a way to belittle the other in the conversation and to minimize their statement.
The engine has caused problems for some, including me, and their claims are legitimate. Otherwise, Mazda wouldn't have extended the warranty as they did.
The engine has caused problems for some, including me, and their claims are legitimate. Otherwise, Mazda wouldn't have extended the warranty as they did.
the extended warranty is more like a "Trust our engines, trust our brand!" thing more than "we got you cover cuz we know it's f-ed up", some ppl appreciate it. some don't.
06-28-2012, 02:25 PM
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What happen when i have bad compession on my rx8??
I'm just wondering my rx8 has 98 and i feel it running pretty nice I'm just wondering to learn a little more thanks
06-11-2014, 10:52 AM
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Compression Test, 125K miles
I have an RX8 with 125k miles. It runs great as long as I change the coils and plugs when necessary. The problems I've been having are poor gas mileage (15mpg city), and sluggish hot starts. I just had a compression test done and am looking for opinions. I guess it comes down to rebuild it or sell it. :P I'm attaching an image of the compression test. Rear rotor varies from 6 - 6.5 kg/cm. Front varies from 5.5 - 6 kg/cm. Thoughts?
06-11-2014, 10:55 AM
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What is your cranking speed? Those may be passing, and may be failing. Likely failing, assuming your starter isn't failing, but without the cranking speed it's not really clear where you actually are.