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4a31 egine black smoke and sound like misfire why? coil is ok. spark ok beck ok combression ok.

I chek combression. spark.coil.beck.

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YOU DID NOT GIVE A YEAR BUT IF IT HAS A CARB CHECK TO SEE IF THE CHOKE IS STUCK CLOSED. IF IT IS FUEL INJECTION CHECK THE MAP SENSOR

Posted on Dec 08, 2014

Testimonial: "1997 pajero jr injection. thanks a lot i will check the MAP and let you no. any idea how to check? i cant found ather."

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Coil packs I replaced #4 and #5 went out. Why?


How to Tell if You Have a Faulty Coil Pac How a Coil Pack Works When creating a spark at the spark plug, the fire must initiate from a high voltage supply, so as much fuel as possible burns in the cylinder. Whenever the combustion process is started, the coil pack builds up the energy, as much as 50,000 to 75,000 Volts. When the electronic control module (the car computer) sends the signal to the ignition control, the voltage is released from the coil pack through the spark plug cables to the spark plug.
When the spark travels to the spark plug, it jumps from the spark plug gap to the ground, causing an explosion of the fuel air mixture inside the cylinder chamber Coil Pack Problems Usually, if a coil pack is bad, there will be a loss of fire or spark in one or more cylinders. This causes what's commonly referred to as misfiring. Misfiring can cause drag on the crankshaft, and usually results in a very poor performing engine Common Symptoms of a Faulty Coil Pack A faulty coil pack will generally have symptoms similar to a faulty spark plug. Some of the most common tell tale signs that a coil may be defective include:
  • A rough idle
  • An unexplainably louder-than-usual engine
  • A noticeable lack of power
  • A significant drop in RPMs while accelerating for no apparent reason
  • A blinking or intermittently activating check engine light
  • An active gas warning light when the vehicle has plenty of gasoline
  • Smoke from the exhaust emitting intermittently, instead of in a steady strea How to Test a Coil Pack Fortunately, there is an easy way to test the coil packs in your vehicle and make sure they're working as they should. You need to use ohm meter to test the coil pack for continuity. Make sure you have the approximate ohm values for the coil pack. To find this information, research your car's engine on the Internet or purchase a Chilton's or Haynes manual to find out what the mega ohms reading on the coil pack should be. What Coil Pack Works with a Rotary Engine? Most rotary engines require a different type of ignition coil pack. Below are two, one for a standard replacement, and one that is a higher voltage performance type coil pack.
    Original Equipment Replacement
    Beck Arnley is a well known name in the automotive ignition parts industry. They are favored by many mechanics, especially those that work mostly on import cars. The Beck Arnley 178-8025 rotary engine coil pack is a direct replacement for original equipment parts on older Mazda cars with a rotary engine. You can expect to pay about $55 for one.Performance Replacement
    M&W Ignition Systems is a fairly well known name in the import performance market. Their part number PAK005 is a high performance ignition coil pack for the performance enthusiast who isn't afraid to spend a little more on a high quality high performance part. With prices running around $245 for a double coil pack for direct fire ignitions, these coil packs will deliver years of excellent performance.
    When ordering a coil pack for your rotary engine equipped car, you need to know the year and model as well as the engine displacement to ensure you are given the correct parts.

Sep 30, 2016 | Cars & Trucks

1 Answer

What trouble code is P0300


The code indicates a "random misfire." It means the egine is occassionally misfiring. Often it is due to worn spark plugs or a defective ignition coil that no longer produces a strong spark.

Jul 09, 2014 | 2004 Nissan Maxima

1 Answer

My 06 Chrysler 300C has a P0301 misfire. How do I fix it?


im having the same issues! i have 2007 chrysler 300 i changed all 6 spark plugs and the coil pack on cylinder 1! my check egine light is still on! dont no what too do now!

Jan 18, 2013 | Chrysler Cars & Trucks

1 Answer

Ok, my 2000 acura 3.2 tl egine light blinks and the tcs light stays on, also the engine has a slight shake at idle. Took to autozone to get the codes came back as all 6 cylinders misfire, multiple misfire,...


This is strange. The tcs is a traction controll error. If you are getting misfire codes and traction control warnings, then I would have your control module tested to make sure it is not having intermittent power issues to each component.

Jun 06, 2012 | 2000 Acura TL

1 Answer

Jimny . misfiring


the cap, plug wire or injectors need more info on car

Apr 20, 2012 | Cars & Trucks

1 Answer

I have a hyundai elatnra 99 with 115k miles on it. in the morning or after work when the car is idle for a long time and I start the car it make the sound of missing and then in few seconds its ok


sounds like u have an engine misfire .probably due to worn tune up parts. if u have individual coilpaks on top of each sprkplug, then u need to get ur chek engine light scanned to find which cyl is at fault, then most common issues with these systems are the coils on top of the cylinders.they start to fail intermittently and eventually fail altogether causing a misfire that wont go away. i would get a free chek eng code pull at autozone or pep boys they do this for free then ucan decide which coil its gonna need along with ur plugs and boots for all ur coils to solve this issue .good luck

Apr 08, 2011 | 2000 Hyundai Elantra

2 Answers

My vitara p reg 2L started smoking on start up, now it is misfiring any ideas where i start, I can't see any spark plugs in the engine-maybe i'm blind or stupid


Many new cars hide most of the engine underneath plastic covers that must be removed to find anything. The smoking problem may or may not be serious, but it's likely that the spark plugs will show black oily deposits on the interior insulators. Cleaning or replacing the plugs will usually make the engine run ok for awhile, but with continued smoking, it will foul the plugs again. If all the plugs are fouled, then look for something like a bad PCV valve that creates crankcase pressure when plugged. Worn out valve seals which allow oil to leak into the cylinders can account for smoking only on start-up. These seals can usually be replaced without pulling the cylinder head. Hope this helps!

May 21, 2010 | 1999 Suzuki Vitara

1 Answer

2006 Dodge Quadcab 1500, 4.7L. Ok I have changed the spark plugs & coils, oil, oil filter, and air filter....my check engine light is still coming on. Ran diagnostic at store, PO300 coming up (said...


Random misfires are some of the trickiest problems to solve, usually an ignition system problem a bad or weak coil pack or possibly a spark plug wire. If not the ignition system then surely a clogged injector.

Sep 03, 2009 | 1996 Dodge Grand Caravan

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