Question about 2001 Dodge Ram 1500 Truck 2WD

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Vehicle starts to shake badly at 1500rpm

Changed oil, new air filter, new coil pack on clinder 6 after scanner said misfire on cylinder 6, fuel cleaner added to tank of fuel

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  • Dodge Master
  • 17,970 Answers

When's the last time you changed the plugs, wires, cap, and rotor?
Used dielectric grease on the plug, coil, and cap tips?
Cleaned the Throttle Body? Stop with the cleaners for a bit, running too much isn't a good thing either, especially if it starts to break down the fuel line.

Sounds like your ignition might not be firing right. Maybe a crankshaft position sensor that is starting to fail.

Next thing, if it has a Cap and Rotor, the cap terminal if it is alum, might be coming out. I hate thes caps the best ones are the brass ones; look at the inside of the cap see if you see cracking or tracing (tracing loos eater black or white cooing off the poll inside. If it is a coil pack model try getting a spark tester and hook it to that wire and run the truck have some one get in it and hold the break and put it in gear and watch for the spark to flutter.

If you bot a code reader you should be able to obtain a noid light, disconnect the injector connector and install the light to the connector. Start the engine, the light should flash if the wiring and pcm are OK. If it flashes probably injector if it does not wiring or PCM.

Also, keep in mind the descriotion about DTC P0306 may mean that one or more of the following has happened:

  • Faulty spark plug or wire
  • Faulty coil (pack)
  • Faulty oxygen sensor(s)
  • Faulty fuel injector
  • Burned exhaust valve
  • Faulty catalytic converter(s)
  • Running out of fuel
  • Poor compression
  • Defective computer

Possible Solutions: If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.

Keep in touch.

Posted on Jul 13, 2010

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Timing could have jumped. Could be a bad head gasket also. even possible to be a small hole in piston check the cylinder for compression. Check the fuel injector to that cylinder if you have bad air to gas mixture it will throw a code of misfire change fuel filter check fuel injector to see if clogged. most likely it is the fuel injector .

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2002 Nissan Altima is burning oil shakes after 3 miles max of driving, Smokes when foot on gas and reads cylinder 4 misfire. What can the problem be?


i would get vehicle on a scanner and check live data.
could be a faulty coil pack or injector on cylinder 4. Try putting the coil pack from cylinder 4 onto cylinder 1 and rescan.
If the fault moves to cylinder 1 the coil pack you moved is at fault.
You may have to replace the whole coil pack if individual units are not used on your vehicle.
The injector process is same as above but a bit more tricky due to the fuel pressure in the line...be careful!
If swapping these has no effect you wil have to carry out a compression check on all cylinders and see howthey look against cyl 4.
The shaking is the misfire, the smoke is unburnt fuel.
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I assume the vehicle has a regular service and the spark plugs are in good condition.
note...when this prob is resolved..change the oil and filter, it will be contaminated by now.
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Engine missing


Then you went to a shop that doesn't have the
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