Question about 2004 Mazda RX-8

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Low acceleration and no power

2004 mazda rx8: 58 lbs. fuel pressure & plenty of volume. good ignition. there is also a code 1688. i can dissconnect 1st and last ignition coil and no change in performance is made. but coils are working and plugs and wires are good. compression is 175 lbs @ idle. Would appreciate any help you could offer. i dont normally work on rotory engines so im kida out of my element here. thanks in advace. Jack

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White spots caused by heat build up on the back of the coil pack is a sign that the coils are grounding out on the inside of the casing. Mazda have released revised version in hope to combat this common fault in RX8 engines.

More info: RX8 coil packs

Posted on Apr 21, 2011

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I would take those 2 coils off and check the backing of the packs. any discoloration indicates they are bad or going bad. coils may be working, but not to full potential due to grounding issues.

Posted on Jul 18, 2009

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