Hot start problem - compression is (hopefully) OK

vendredi 19 juin 2015

Hi,

I read a couple of threads about hot start problem. I wonder if any more experienced owner can confirm or provide more information to this.

My problems with hot-starting started like 3 months ago. First I thought the problem is low compresion, the engine has 118k km (approx. 74k miles), so I thought I am screwed up with no other option than doing rebuild.

I came to the Mazda dealership to do the compression test and it came out OK.

The values are:
Rotor 1: 732/749/766 KPa @ 218 rpm
Rotor 2: 775/780/766 KPa @ 216 rpm

34.6 KPa max. rotor 1 - min. rotor 1
13.8 KPa max. rotor 1 - max. rotor 1
13.8 KPa max. rotor 2 - min. rotor 2

My RX-8 is 2004, 6speed MT, stronger engine, European version if that matters some.

From what I read, the problem may be solved with new starter. They replaced the spark-plugs, thay were carbonised or something, but the problem persists. As far as I know, the starter is still the original one, so I think (hope) it is the merit of the problem - that it is too worn-out to generate enough rpm?

Are the values of compression test poor/good/fine/superb? The guys in Mazda told me these are next to ideal numbers.

Where should I start with solving my problem? It is quite annoying to kill the engine, return to car and have to wait for up to an hour to start it again. Once I got stuck for 15 minutes in the busy crossroad after killing the engine incidentally, not a pleasant experience at all :-o

Any suggestion well appreciated.

Thank you,
Peter


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