Question about Cars & Trucks

1 Answer

P0300 code. Came up checked for spark troubles found nothing good spark good compression something is making the vehicle sound rough should I suspect a weak fuel pump anyone have a common fix

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Cars & Trucks Master
  • 948 Answers

Borrowed from OBD Codes.com:
"Basically this means that the the car's computer has detected that not all of the engine's cylinders are firing properly.
A P0300 diagnostic code indicates a random or multiple misfire. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is misfiring. Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why.

A

  • the engine may be harder to start
  • the engine may stumble / stumble, and/or hesitate
  • other symptoms may also be present
  • code P0300 may mean that one or more of the following has happened:
    • Faulty spark plugs or wires
    • Faulty coil (pack)
    • Faulty oxygen sensor(s)
    • Faulty fuel injector(s)
    • Burned exhaust valve
    • Faulty catalytic converter(s)
    • Stuck/blocked/leaking EGR valve / passages
    • Faulty camshaft position sensor
    • Defective computer"

  • StarI suggest you start simple.... replace the plugs and test the spark plug wires. Make sure all connections are tight.
    Star

    Posted on Apr 02, 2015

    Ad

    1 Suggested Answer

    6ya6ya
    • 2 Answers

    SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

    Hi,
    a 6ya expert can help you resolve that issue over the phone in a minute or two.
    best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
    the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
    click here to download the app (for users in the US for now) and get all the help you need.
    goodluck!

    Posted on Jan 02, 2017

    Ad

    Add Your Answer

    Uploading: 0%

    my-video-file.mp4

    Complete. Click "Add" to insert your video. Add

    ×

    Loading...
    Loading...

    Related Questions:

    1 Answer

    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

    Oct 07, 2014 | Cars & Trucks

    2 Answers

    Troubleshooting a rough idle


    Have the engine computer scanned for trouble codes. Misfires are from loss of fuel, spark, or compression. Check the fuel pressure, check that all spark plugs are getting spark, and if all good so far, test engine compression. Low compression in a cylinder will cause misfires and loss of power.

    It could also be a vacuum leak- a loose or cracked vacuum hose or an intake gasket leak.

    Jul 27, 2014 | Dodge Stratus Cars & Trucks

    1 Answer

    Fixing code p0300


    code p0300 refers to random/multiple misfires detected===causes --spark plugs-- HT leads --injectors --coils--low compression--- ECM
    While it is common to jump on the plugs ht leads band wagon it is also very possible that the injectors are not working properly because of insufficient fuel pressure . Have a fuel manifold pressure test done to check pump/regulator / filter problems first

    Mar 20, 2014 | 2004 Nissan Quest

    2 Answers

    2002 Saturn L100 with a P0300 code


    Here's a link to the P0300 code and possible causes.Sounds like clogged fuel injectors. https://www.autocodes.com/p0300_saturn.html

    Aug 05, 2017 | Cars & Trucks

    1 Answer

    2005 saturn ion 3 trouble code P0300


    A P0300 code indicates random, multiple misfires were detected. You eliminated the possibility of ignition system faults by replacing the ignition module, the coils, and the spark plugs (unless the replacement part(s) were no good). However you did not mention the ignition wires which are another probable cause. In addition, there could be vacuum leaks due to damaged hoses or improper routing. Consider also fuel contamination or a problem with the fuel system.

    Dec 24, 2013 | Cars & Trucks

    1 Answer

    Rough idle on 2002 Dodge Neon


    Without trouble codes you are fishing in the dark. If the engine has a cylinder that is dead at idle from a fuel injector or ignition problem, it should have a code for a miss on that cylinder. A mechanical problem like a burned valve could cause the problem without setting a code. Have you checked compression on all 4 cylinders ? ?

    May 27, 2013 | 2002 Dodge Neon

    1 Answer

    Ive changed almost every component on my car that may not make it want to fire off, im not getting any fire to my 1 plug i have changed my coils as well as the module the only thing i havent done is...


    Hello there, sounds pretty frustrating. Before it broke down was there a check engine light? Or is there reason to suspect the timing chain like overspeeding the engine or just cutting off while running? Did you have the trouble codes read out or read them out yourself? You need four things for the engine to run. Air, fuel, spark, compression. First check and make sure there are no retrictions blocking the incoming air. Then simply turn your key to the run position but do not try to start, listen for a hum or whine coming from the rear of the vehicle. This will be the electric fuel pump running. This will tell you you probably are getting fuel pressure to your injectors. If you are to this point on the checklist we need spark. Now are you saying you do not get spark at the number 1 plug or all plugs? If you have changed these parts, Ignition module, coils, plug wires, spark plugs then I would suspect crank sensor if timing chain is good. It is rare to lose compression on newer motors unless overheated badly, timing chain broken or jumped teeth, How many miles? If very high mileage then maybe compression. If it is none of these things it may be something more serious with the ecm or something very simple that was looked over. First before any of this though, check all fuses and then check codes, a DTC may point you directly to the problem, even the air mass meter can cause the vehicle to not run.

    Jun 13, 2010 | 1998 Chevrolet Camaro

    2 Answers

    2001 audi a4 1.8 random misfire


    do a compression test then do a combustion pressure test if all good computer is questionable

    May 25, 2009 | 2001 Audi A4

    2 Answers

    Check engine light on,running rough and stalling.


    means you have multiple misfires (po300) the other codes are lean codes, possiable tune up , bad injector, fuel pump,

    May 07, 2009 | 2001 Isuzu Rodeo

    Not finding what you are looking for?
    Cars & Trucks Logo

    Related Topics:

    162 people viewed this question

    Ask a Question

    Usually answered in minutes!

    Top Cars & Trucks Experts

    yadayada
    yadayada

    Level 3 Expert

    76164 Answers

    Colin Stickland
    Colin Stickland

    Level 3 Expert

    22156 Answers

    Randy Ohler

    Level 3 Expert

    14585 Answers

    Are you a Car and Truck Expert? Answer questions, earn points and help others

    Answer questions

    Manuals & User Guides

    Loading...