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02 chevy s10 4.3L p0300 misfire replaced distributor and cap and rotor plugs look ok no excessive carbon build up

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 1998 chevrolet k1500 pickup 305 a misfire in # 2 cylinder

hi there, if you can feel the misfire at an idle but not at a higher rpm than the fuel pressure regulator is bad im working on one right now that has mifire code and random misfire codes coming up

Posted on Aug 28, 2008

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SOURCE: i have same problem on my (Audi A4 3.0L)

try somethng simple. change fuel filter. add can of SEAFOAM to tank of PREMIUM gas. allow to idle for 3-5 min. drive hard for 10 minutes. get Zone or Advance to cut off light. go 30 miles. change fuel filter again. this is a case of Ethanol gas syndrome. it causes oxy readings ff the scale; carbonizes fuel,emission, and engine internals, try this first. add SEAFOAM every 3-5000 miles to clean this waer and goop out and see how it works. also, you might be able to clean oxy sensors or replace them.

Posted on Aug 31, 2009

GARYca
  • 672 Answers

SOURCE: Ignition Distributor location

There is no cap and rotor, as the vehicles igntion system is DIS (digital ignition system). The recommended tune-up on these motors require sparkplug and coil replacement. The coil type in this vehicle is COPs (coil over plugs). Usually moist and oxidation develope on the sparkplug chamber walls from faulty or worn coil boots. This causes the coil to short, they must be replaced at 75,000 miles at the same time the sparkplugs are replaced. Typical symtoms are: Vehicle stalls (restarts and runs normal), intermitted jerks/sputter while driving, misfires, rough idle, severe power loss. Hopefully this helps

Posted on Sep 01, 2009

  • 1608 Answers

SOURCE: vehicle misfire... diagnostic code is 1351

Code 1351 is for the ignition control module.Ignition control circuit high.This module is on the same bracket as the coil.Before you buy a new one.Try a salvage yard and get a used one.

Posted on Nov 19, 2009

  • 59 Answers

SOURCE: my trialblazer 4.2 six misfires and stalls

Cam shaft position actuator problem, bad harmonic balancer, or internal engine failure.

Posted on Feb 23, 2010

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1 Answer

My 1999 lexus es300 is still reading the codes P0300, P0302,P0303 after giving it a tune up.


Your codes indicate misfires. What was done in the "tune up"? Misfires can be caused by any of several different causes including (but not limited to):
spark plugs
spark plug wires
coil packs
injectors
injector wires

The term "tune up" used to mean, "replace points, condenser, distributor cap and rotor, and plugs". Since most cars no longer have points, condenser, distributor cap and rotor, we need to ask what was done...

Jun 16, 2015 | 1999 Lexus ES 300

2 Answers

Has p0300 code misfire cyl 2 and 3


If it was just cylinder 2 or 3, the code would be 0302 or 0303. Instead, you have random misfires (probably) such that you should be checking things that affect the whole engine. Vacuum leaks, bad plug wires, bad coil(s) or ignition module are most likely, but even clogged exhaust, O2 sensors and bad battery can cause these problems. Yes, a battery can be good enough to start your car but still be bad enough to affect performance. If I had to guess, I would start by testing the ignition module. Most parts stores can test this if you remove it and carry it to them.

May 04, 2015 | 1998 Chevrolet Blazer

2 Answers

Inconsistent engine miss fire?


likely suspects:
worn out spark plugs
dirty air filter
vacuum leak
worn out oxygen sensor
bad gas or loose gas cap

If you can't troubleshoot and diagnose the problem causing the misfire, take the car in for service.

Dec 07, 2014 | Cars & Trucks

2 Answers

Why the loss of power and po300 code?


HARD TO SAY WITH OUT BEING THERE BUT THIS MIGHT HELP .
Crankshaft sensor Was the trouble with my 99 Chevy truck after replacing many components like coil cap rotor wires and so on .
http://www.obd-codes.com/p0102 Code P0300 Causes and Fixes Code p0300 is a code that is generated when your engine has a misfire that is not related to only one cylinder. Sometimes this code will be set in addition to other codes such as p0301 which means that there is a misfire on cylinder 1 (cylinder 1 is the number one cylinder when looking at the firing order. It is generally the forward most cylinder on the engine.). If these engine codes are present as well the you should diagnose those first as they are probably causing code p0300.
This code will set your check engine light and needs to be fixed as soon as possible. If it is not then you will probably need to replace your catalytic converter as well as the problem that is causing your misfire.
There are many causes for this obd code. Since it is a "random misfire" or "multiple misfire" this means that the misfire is on different cylinders and not just one all the time.
Common Causes
  • Low Fuel Pressure
  • Vacuum Leak
  • EGR system malfunction
  • Internal Engine Problems (such as low compression)
Less Common Causes
  • Faulty Coil
  • Faulty Spark Plugs and/or Wires
  • Camshaft or Crankshaft sensors
  • Ignition module
  • Computer

Jun 12, 2014 | 1998 Chevrolet Tahoe

3 Answers

Cylinder misfire p0300


START THE ENGINE AND LIFT THE IGNITION WIRE LISTEN FOR SPARKS.IF ONE OR MORE CYLINDERS DON'T CHANGE THE WAY IS RUNNING ,YOU GOT THE BAD CYLINDER. LOOK FOR BURN MARKS ON THE WIRE(BLUE/WHITE SPOT)IF SO REPLACE THE WIRE.SOME TIMES VALVE COVER LEAKING IN THE TUBE. REPLACE VALVE COVER GASKET,BLOW THE OIL OUT BEFORE REMOVE THE SPARK PLUGS.REMOVE THE SPARK PLUGS AND INSPECT THE ELECTRODE.GOOD ELECTRODE WILL BE WITH SHARP EDGE ,IF ROUND OR LIKE CONE REPLACE WITH DENSO OR NGK ORIGINAL EQUIPMENT . REMOVE THE DISTRIBUTOR CAP AND LOOK FOR OIL IN THE CAP. IF OIL INSIDE REPLACE DISTRIBUTOR. IF NO OIL INSPECT THE CAP AND ROTOR FOR THICK WHITE DEPOSIT OR ROTOR FOR BLACK BURN MARKS. REPLACE CAP AND ROTOR.IF EL.SYSTEM IS OK SPRAY CARB CLEANER ON INTAKE MANIFOLD AND LISTEN FOR RPM CHANGE.IF CHANGE THE RPM REPLACE MANIFOLD GASKET.

Mar 29, 2014 | 1998 Acura Integra Type R

2 Answers

Cylinder 5 and im also getting p0507 idle is higher then expected. ive change plugs wire cap button cam sensor and distributor. but now its throwing the codes p0300 and p0507 it goes from p0300 to p0305...


po 300 is random/ multible cylinder misfire detected po507 idle system rpm high-- go to this site for the po507 meaning--www.obd-codes.com/p507 === please go to this site for the po300 code---- www.obd-codes.com/p0300

Random/Multiple Cylinder Misfire Detected have a good day !!

Feb 15, 2011 | 1997 GMC Sierra

1 Answer

I have a 1996 chevy c1500 that is throwing a p0300 code indicating random multipul engine misfire. this is the only code it shows I am familuar with older non computer engines but cant determine the cause...


Look at the plugs, if they looked hot and cooked then the misfire is unlikely to be electrical. If they look OK check out the Cam sensor connections on the edge of the flywheel housing. If the plugs are cooked it could be a duff EGR valve or, because you have no code, a clogged exhaust feed pipe to it. The absence of the introduction of a measured amount of exhaust gas to the mix would give rise to systemic overheating of the ignition temperatures and this in turn can lead to multiple fire events

Aug 29, 2010 | 1996 Chevrolet C1500

1 Answer

Code p0300 coming up random cylinder misfire already changed wires had cylinder 5 misfire .should i replace coil


If you already replaced the wires, I would suggest replacing the plugs, distributor cap and rotor. They are also very important parts of the spark. Fuel injector problems can also cause misfires.

May 19, 2010 | 2001 Chevrolet Blazer

1 Answer

Miss Firing


You might have a small leak in your vacuum system, check all of the hoses and plugged vacuum connections. Check your plugs and wires, distributor cap and rotor. Sometimes a crack in the distributor cap will cause carbon to build up. Since carbon is an electrical conductor it might be jumping from one cylinder to another that is not in line with the firing order.

Jul 10, 2009 | 1998 Jeep Grand Cherokee

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