Question about 2003 Dodge Stratus

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Car will not start

I have spark at the plug, I have good fuel pressure to the fuel log. Trouble code is multiple spark misfire, any suggestions?

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How about the electonic ignition, the coil pack may be bad. are you running the correct plugs?

just a suggestion

Posted on Sep 10, 2008

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Why wont it start says its not getting spark what can it be?


Usually, if it cranks good, but, won't start, have a helper crank it while you visually check for spark at the spark plugs. If spark everywhere, use a gage and check proper fuel pressure. Also, check fuel injector pulse. Knowing if you have multiple issues can help? If multiple issues, I want to check for rpm signal.
If no spark only, check primary voltage and ground at the coil, go from there.
Check for applicable trouble codes, to check codes, yourself, you may need an obd2 code reader. I can only make suggestions about what to check, you have to do the testing.

Jul 20, 2015 | 1998 Cadillac Eldorado

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Why won't my car start?


P0300 multiple misfire
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I have a 2005 Nissan Sentra 1.8L Special Edition and I'm having trouble starting the car. The check engine light came up and got a troubled code P0300. I have recently changed the spark plug, MAF sensor...


DTC P0300: Random multiple misfire detected. Probable cause:
1, Vacuum leaks. Damaged hoses or incorrect routing
2. Fuel contamination
3. Ignition system problem. Check ignition module, coil, spark plugs and wires
4. Fuel system problem

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What is the normal fuel pressure for a 2002 grand am v6?


Definition of Diagnostic Trouble Code P0300 Category: Powertrain Definition: Random/Multiple Cylinder Misfire Detected

Apr 22, 2017 | 2002 Pontiac Grand Am

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Engine cranks but wont start has an obd p 300 &p304 help me


P0300 Random/Multiple Cylinder Misfire Detected, the 304 is for cylinder number 4 any of these could be wrong 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. Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck open

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I changed the plugs and wires on my 2003 trailblazer. I gapped the spark plugs @ .040 and checked all of the connections. Now my engine skips. It gave a 0300 code ( multiple cylinder misfire). Any...


if its a multiple missfire then i would suspect your fuel pressure is dropping or your regulator has failed and is sucking too much fuel causing the computer to overcompensate, these engines are also known for intake leaks

Mar 28, 2011 | 2003 Chevrolet Trailblazer Ext

1 Answer

2005 Grand Cherokee 4.7L. When started multiple misfires cyl 1,3,5,7. After running about 1 minute, misfires disappear. Code p0300, sometime accompanied by p0303


P0300 is Multiple Misfire and P0303 is one specific misfire in the cyl #3.

A code P0303 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.

Hope helps.

Mar 07, 2011 | Jeep Grand Cherokee Cars & Trucks

1 Answer

After I replace my timing belt and injectors, I started the motor but it hesitates showing me 0306 # 6 is misfiring, 1105 Fuel pressure selenoid circuit fault, 0325 Knock sensor. Is it good idea to test...


I would think that if the problem was fuel presssure, it would affect all cyliners, not just the one. I would look for a fouled spark plug or a bad plug wire. I had a similar problem with one cylinder misfiring, throwing multiple trouble codes. Turned out to be the distributor cap and rotor.

Dec 14, 2010 | 1996 Nissan Quest

2 Answers

Trouble codes for saturn ls2 car is showing the following trouble codes. po300, po306, po451 p2bo3 and c112b


P0300 Multiple Cylinder Misfire Detected

P0306 Cylinder 6 Misfire Detected

P0451 EVAP Pressure Sensor Range/Performance

I have no idea what those last two are. Typo, maybe?

Your first two codes could be caused by old spark plugs and/or leaking plug wires.

Your EVAP code could be a bad fuel tank pressure sensor or a malfunctioning EVAP system. With that code, if you remove your fuel cap and get a whoosing sound, then it is an issue with your EVAP system not properly venting the tank. If you don't get that sound, then the tank pressure sensor is bad.

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