Question about 1987 Mazda RX-7

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I'm not sure which sparkplug and coil wires go

I'm not sure which sparkplug and coil wires go where

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OK most stock engines for daily street driving use the NGK BUR6 and BUR8 spark plugs the 6's go in the Leading side so the bottom 2 spark plug holes. The 8's go in the Trailing side which is the top 2 spark plug holes.

Now as far as the plug wires. You have 2 coil packs one will have markings by the output tips that say L1 and L2 the other will say T1 and T2. its very simple L= Leading side, or bottom plug. T=Trailing side or top plug. 1=Front rotor, 2=Rear rotor.

Hook up everything that way and you should have no more issues.

Posted on Oct 08, 2010

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Make sure you reconnect all the plugs to the coils, hoses to the intake tube and reinstall your intake tube. The drivers side is a little easier. Pop the spark plug wires from their plastic holders to free enough slack to be able to pull your sparkplug wires out of the block. For the plug closest to the front of the engine you will need to remove the 10mm bolt holding the ground wires to the intake manifold to be able to free enough space for removing the plug.

For the middle plug you will need to remove the 10mm bolt holding the bracket that is holding one of the throttle cables at the top of the intake manifold. For the rear plug just pop the flexible hose that runs behind the black metal bracket straight up out of its clip and push it out of the way along with any other hoses that run through this area. Pull the spark plug wire from its place by pulling straight up just like with the coils. there will also be about a 6 inch tube running down to the spark plug at the bottom of these plugs.

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WARNING: Risk of Electric Shock

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Update me about your progress

Good luck

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