Are the wires hooked up?What is up with no spark on the even cylinders and spark on odd cylinders?
How are you determining there is no spark? Are you missing spark on the odd cylinders or even cylinders? Have you actually pulled a wire off of a non-firing cylinder at the coil pack with the engine running to verify there is no spark?Yes, I see this thread is 100 years old, but I have the same problem. I have swapped out the coil pack, and put in a new ignition module, but I have the same problem with no improvement. Like Ormand said above, I don't even know how this is possible since a single coil should fire to both banks simultaneously.
Anyone have any other suggestions??
How are you determining there is no spark? Are you missing spark on the odd cylinders or even cylinders? Have you actually pulled a wire off of a non-firing cylinder at the coil pack with the engine running to verify there is no spark?
That's not a good way to check for spark. A lot of timing lights are sensitive to polarity. Is the engine running normal?Using a timing light. Timing light flashes only on drivers side cylinders.
Mmm, don't see how that is possible. The coils are wired in series, an odd cylinder paired with an even cylinder. Number 1 with number 4, 2 with 5, etc. So if the even cylinders are firing, the odd ones have to fire, too. One set fires "backward", from side electrode to center, don't know it that would affect how your timing light works or not. Usually, the coils go bad one at a time, and that will affect pairs of cylinders, even and odd.
Okay the stock coil pack only has 3 coils . It is a waste spark system so when 1 is firing for its power stroke 4 is also firing on its exsaust stroke . So if you have spark on 1/2 your coil pack you should have it on the other side if not your coil pack is toast .
That's not exactly true. A lot of pickups are labeled "towards spark plug". There's a reason for that. The pickup coil fires the gate of a SCR in the timing light. It has to be the correct polarity to fire it. If the current is reversed it won't fire. I have a timing light that won't work on the even cylinders unless I flip the pickup over ("towards spark plug" is facing the coil pack). We don't know what type of timing light the OP is using so I wouldn't trust it. I'm not saying he is getting spark on the even cylinders but using the light to check for spark is not a good way to check. I would just pull a wire off of the coil pack, hold it close to the coil pack and check for spark.All of the timing lights that I have ever seen are of the inductive pickup style, that is what the clamp that go's around the plug wire is it is just picking up the magnetic field that is built up around the plug wire when current flows through it doesn't care about polarity so your right, if it's not lighting off the timing light,you've got no spark to that side of the engine, either module or ecm
That's not exactly true. A lot of pickups are labeled "towards spark plug". There's a reason for that. The pickup coil fires the gate of a SCR in the timing light. It has to be the correct polarity to fire it. If the current is reversed it won't fire. I have a timing light that won't work on the even cylinders unless I flip the pickup over ("towards spark plug" is facing the coil pack). We don't know what type of timing light the OP is using so I wouldn't trust it. I'm not saying he is getting spark on the even cylinders but using the light to check for spark is not a good way to check. I would just pull a wire off of the coil pack, hold it close to the coil pack and check for spark.[/wow I have never seen that maybe the time and laughs I've used over the years aren't set up that way what do you have to do flip the inductive pickup around[
That's not exactly true. A lot of pickups are labeled "towards spark plug". There's a reason for that. The pickup coil fires the gate of a SCR in the timing light. It has to be the correct polarity to fire it. If the current is reversed it won't fire. I have a timing light that won't work on the even cylinders unless I flip the pickup over ("towards spark plug" is facing the coil pack). We don't know what type of timing light the OP is using so I wouldn't trust it. I'm not saying he is getting spark on the even cylinders but using the light to check for spark is not a good way to check. I would just pull a wire off of the coil pack, hold it close to the coil pack and check for spark.
That's not exactly true. A lot of pickups are labeled "towards spark plug". There's a reason for that. The pickup coil fires the gate of a SCR in the timing light. It has to be the correct polarity to fire it. If the current is reversed it won't fire. I have a timing light that won't work on the even cylinders unless I flip the pickup over ("towards spark plug" is facing the coil pack). We don't know what type of timing light the OP is using so I wouldn't trust it. I'm not saying he is getting spark on the even cylinders but using the light to check for spark is not a good way to check. I would just pull a wire off of the coil pack, hold it close to the coil pack and check for spark.
That's not exactly true. A lot of pickups are labeled "towards spark plug". There's a reason for that. The pickup coil fires the gate of a SCR in the timing light. It has to be the correct polarity to fire it. If the current is reversed it won't fire. I have a timing light that won't work on the even cylinders unless I flip the pickup over ("towards spark plug" is facing the coil pack). We don't know what type of timing light the OP is using so I wouldn't trust it. I'm not saying he is getting spark on the even cylinders but using the light to check for spark is not a good way to check. I would just pull a wire off of the coil pack, hold it close to the coil pack and check for spark.That's not exactly true. A lot of pickups are labeled "towards spark plug". There's a reason for that. The pickup coil fires the gate of a SCR in the timing light. It has to be the correct polarity to fire it. If the current is reversed it won't fire. I have a timing light that won't work on the even cylinders unless I flip the pickup over ("towards spark plug" is facing the coil pack). We don't know what type of timing light the OP is using so I wouldn't trust it. I'm not saying he is getting spark on the even cylinders but using the light to check for spark is not a good way to check. I would just pull a wire off of the coil pack, hold it close to the coil pack and check for spark.
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I have never seen this but maybe it's just because of the timing lights that I have used aren't set up like this but I still don't see how checking it even if having to flip over flipping over the inductive coil is not going to tell you if it's got spark to the plugThat's not exactly true. A lot of pickups are labeled "towards spark plug". There's a reason for that. The pickup coil fires the gate of a SCR in the timing light. It has to be the correct polarity to fire it. If the current is reversed it won't fire. I have a timing light that won't work on the even cylinders unless I flip the pickup over ("towards spark plug" is facing the coil pack). We don't know what type of timing light the OP is using so I wouldn't trust it. I'm not saying he is getting spark on the even cylinders but using the light to check for spark is not a good way to check. I would just pull a wire off of the coil pack, hold it close to the coil pack and check for spark.