Hi,
I am new to this club. I have a 2005 RX8 which I've had for 2 years. I have used it for 24k miles during which I changed the oil 3 times(I am guilty of not changing it at recommended 3000 miles interval).
So, now, I am trying to sell it but lately it has been having hot start issues. It does not start when tried cranking after it's been warmed up. It start perfectly from cold though. So, I had the compression test conducted on it and got back the following results:
Rotor 1: 86 psi, 83 psi, 85 psi
Rotor 2: 84 psi, 85 psi, 86 psi @ 202 RPM at Elevation 650
When normalized to sea level and @ 250 RPM, the results are:
Rotor 1: 102.4 psi, 98.83 psi, 101.21 psi
Rotor 2: 100.02 psi, 98.83 psi, 102.4 psi
which when compared to Mazda specs for the Renesis motor (04-11) are still higher than Minimum acceptable.
What I'm curious to know is how long do you (esp. more knowledgeable & experienced) guys think I have before the engine totally wears out and would not start at all?
Is there a way I can add some more life to the engine say by installing a faster starter motor/Spark Plugs/ Cleanse the engine?
Also, lastly, what do you make of the numbers that I got back from the compression test?
I'd really appreciate your advice/suggestions on this topic, as I am in a predicament of making a decision whether to put a new faster starter motor or replace the engine altogether.
Thanks!
I am new to this club. I have a 2005 RX8 which I've had for 2 years. I have used it for 24k miles during which I changed the oil 3 times(I am guilty of not changing it at recommended 3000 miles interval).
So, now, I am trying to sell it but lately it has been having hot start issues. It does not start when tried cranking after it's been warmed up. It start perfectly from cold though. So, I had the compression test conducted on it and got back the following results:
Rotor 1: 86 psi, 83 psi, 85 psi
Rotor 2: 84 psi, 85 psi, 86 psi @ 202 RPM at Elevation 650
When normalized to sea level and @ 250 RPM, the results are:
Rotor 1: 102.4 psi, 98.83 psi, 101.21 psi
Rotor 2: 100.02 psi, 98.83 psi, 102.4 psi
which when compared to Mazda specs for the Renesis motor (04-11) are still higher than Minimum acceptable.
What I'm curious to know is how long do you (esp. more knowledgeable & experienced) guys think I have before the engine totally wears out and would not start at all?
Is there a way I can add some more life to the engine say by installing a faster starter motor/Spark Plugs/ Cleanse the engine?
Also, lastly, what do you make of the numbers that I got back from the compression test?
I'd really appreciate your advice/suggestions on this topic, as I am in a predicament of making a decision whether to put a new faster starter motor or replace the engine altogether.
Thanks!
RX 8 Warm start issue - higher than min pressures in the compression test
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