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Difficult starting with a hot engine.

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Difficult starting with a hot engine.

Post by Delanor » Wed Oct 27, 2010 6:52 pm

If you are having difficulty starting your car from hot but it is OK when starting from cold this maybe an indication that engine compression is low, the answer for this situation is a hot compression check - any Mazda dealer should be able to perform this check using a Mazda Rotary compression tester this is the preferable course of action as a conventional engine compression tester will not give an accurate result.

It should also be noted that a general poor start condition cold/hot maybe due to other factors, battery condition, weak starter motor (Mazda introduced a modified unit for post 2006 cars) worn spark plugs and worn coil packs (coils should be replaced @ approx` 30K miles)

All of these factors will give a poor start situation which should receive immediate attention in order to keep your RX-8 in a good state of tune and it cannot be over emphasised that neglect of these components will result in excessive fuel wash which may cause expensive damage to a Rotary engine.

Lots of further help here: Hot starting problems.

Compression test..jpg
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