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If you are saying everything is ok when the engine first starts but number one starts to miss when at operating temp. Sounds like the number one coil has developed a internal crack that opens up when hot or at operating temp..causing a miss.change it.but before changing the coil check the spark plug wire it may be breaking down when hot..good luck
If this happened after replacing Spark Plugs and Wires, you connected some wires in the wrong plug. If this happened before changing plugs and wires, you need to replace distributor cap and rotor as well. Note: Rain shouldn't make any difference unless electric system is exposed to water.
It sounds like your spark plugs were fouled. Does it keep happening? If so, you may have low compression and oil is blowing through. If it only happened that one time then I wouldn't worry about it. It happens after a while.
Have you changed the spark plugs this year ? Is the check engine light on ? How's the cap rotor and wires ? A miss under load is normal when one of the spark plugs is weak or they are not getting enough voltage from the coil. Also, a weak injector or problem with the fuel system can cause a miss.
A common problem on these engines are the ignition coil packs, there is one for each cylinder, do you have any diagnostic code information so I can help diagnose the problem? The cat converter overheated due to the misfire.
With very little to go on, here's a list of possibilities:
- Bad tank of gas/ dirt in the tank - bad spark plug wire or spark plug (this just happened to me with an old VW. Just out of the blue started missing at a stop sign.)
so...start by removing one wire at a time until one of them doesn't change the sound of the engine at idle. when you have one identified as not making a difference if it's on or off, you've found your culprit, but you can verify this by switching it with another wire (at both ends) and making sure the effect is true at the different location. if it's not, then replace the spark plug (or swap if you're curious)