New igniters and coils but no trailing sparks?

[rxpocketrocket]

So heres the thing ive replaced the wiring harness, coils, igniters, rebuilt engine, ported to ex-street port, cleaned gas tank, new fuel injectors, and ive only put 100miles on the engine and now the thing wont start! There are no vacuum leaks! Ive done all the unflooding procedures and the trailing spark plugs wont fire? the coils are good and the igniters are good..where does the wires from the trailing coil go? It just wont start...it will rev up to 2,000rpm for 2sec. and then die (when i put ATF or eng. oil in the combustion chamber.....HELP!!!

[mazdatech177]

if it tries to start only when you put atf in the chambers then you need another rebuild...

[rxpocketrocket]

Originally Posted by rxpocketrocket

So heres the thing ive replaced the wiring harness, coils, igniters, rebuilt engine, ported to ex-street port, cleaned gas tank, new fuel injectors, and ive only put 100miles on the engine and now the thing wont start! There are no vacuum leaks! Ive done all the unflooding procedures and the trailing spark plugs wont fire? the coils are good and the igniters are good..where does the wires from the trailing coil go? It just wont start...it will rev up to 2,000rpm for 2sec. and then die (when i put ATF or eng. oil in the combustion chamber.....HELP!!!

theres only 100miles on it...why rebuild?

[mwolvin]

If you are not getting spark on the trailing edge plugs, try this. Pull the spark plug boots off of the trailing plug coils and then crank the engine. You should have a spark going from your coils to the brake master cylinder. If not, double check your coils, input signal, wiring, and ignition switch. If you do pull one of your trailing spark plugs out, reconnect your plug wires and ground the spark plug you just removed to something metal on the engine. Have an assistant crank the engine while the spark plug is grounded. (note- do not hold the plug with your hand or anything metal. You will get shocked and it will hurt.) You should have a blue spark at the plug terminal. If you do, reassemble, you do not have an ignition problem on the trailing side.

If the ignition is good, I would try starting the car again using the flood start method or ATF, whichever works, and try to keep the RPM's up with the gas petal until the engine clears.

[drftk1d]

Originally Posted by mazdatech177

if it tries to start only when you put atf in the chambers then you need another rebuild...

this guy is an idiot. ignore him. he's jumping to conclusions way too fast.

i will preach:
dont use ATF. Use marvel mystery oil, its easier on your seals

did you check to see if the plugs were fouled?

[rxpocketrocket]

I dont know where the wires go from the trailing igniter? The igniter is fine and so are both of the coils...spark plugs have been replaced. the damn mazda dealership doesnt even know what the heck is going on!

[mwolvin]

[quote=the damn mazda dealership doesnt even know what the heck is going on![/QUOTE]


That's not suprising. I am assuming that this is a 2nd gen car. Am I correct in assuming that you don't know where the trailing plug wires are going? If so, they are located directly below the leading edge plugs, on the driver side of the engine block.

[rxpocketrocket]

Originally Posted by mwolvin

That's not suprising. I am assuming that this is a 2nd gen car. Am I correct in assuming that you don't know where the trailing plug wires are going? If so, they are located directly below the leading edge plugs, on the driver side of the engine block.

Yers this is a 2nd gen. 87 rx7 do these wires go straight to the ECU or no?

[drftk1d]

Originally Posted by rxpocketrocket

Yers this is a 2nd gen. 87 rx7 do these wires go straight to the ECU or no?

lol they are spark plug wires they go to the coil pack on the right side of the engine bay near the battery

[rxpocketrocket]

Originally Posted by drftk1d

lol they are spark plug wires they go to the coil pack on the right side of the engine bay near the battery

no numb nuts....i'm talking about the wires that plug into the freakin coil packs!!! where do they go from there...not the freakin sparkplug wires!!

[rxpocketrocket]

Originally Posted by drftk1d

lol they are spark plug wires they go to the coil pack on the right side of the engine bay near the battery

no numb nuts....i'm talking about the wires that plug into the freakin coil packs!!! where do they go from there...not the freakin sparkplug wires!!

[rxpocketrocket]

Originally Posted by drftk1d

lol they are spark plug wires they go to the coil pack on the right side of the engine bay near the battery

no numb nuts....i'm talking about the wires that plug into the freakin coil packs!!! where do they go from there...not the freakin sparkplug wires!!

[drftk1d]

then you should have phrased your question correctly