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Random cylinder missfire 1998 chevrolet silvarado 350 vortec motor po 300 code p0307 code cylinder number 7 missfire

Posted by Anonymous on


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

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Posted on Jan 02, 2017

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SOURCE: 2005 Taurus Program Codes PO 300 and PO 316

P0300 maens random multiple cylinder misfire.
When was the last time the car was tuned.
Check plugs and plug leads are O.K
also check that fuel cap is on tight.

Posted on Oct 15, 2008

  • 783 Answers

SOURCE: engine code p0307 cylinder #7 misfire

It could be carbon deposits on valve seats keeping valves from totally closing. You can try getting you a can of motorcraft PM3 top end engine cleaner and get engine up to operating temp then remove one of the small vacuum lines from the intake and draw the contents of the can slowly into the engine.After you have drawn in the contents shut engine off and let it soak for about 45 minutes then crank it back up and let it run until it clears. Now it will smoke like a forrest fire while you are doing this so don't be alarmed,just tell the neighbors you are spraying for mosqitos.This may cure the problem. If not you may be looking at a valve job.
This can be verified with a compression test if this is what is causing it.

Posted on Feb 05, 2009

  • 4 Answers

SOURCE: missfire on #4 cylinder for 1998 kia sportage

had the same problem....broken spark plug. try replacing your plugs.

Posted on Apr 14, 2009

  • 76164 Answers

SOURCE: PO 1665 code 1998 buick rivera

EVAP is for Evaporative emissions control system, so no this is not EGR, that is Exhaust Gas Recirculation system, as far as the P1665 goes it is related to the other trouble code P0440, u will need to replace the EVAP system Purge flow control solenoid. This should correct both problems after u replace the part disconnect the battery for 5 min's to reset system.

Posted on May 14, 2009

  • 957 Answers

SOURCE: Engine Random Misfire code PO-300

P0300 is for random miss-fire, loose or defective gas-cap, water in the fuel, damaged vacuum line, clogged fuel and/or air filter, faulty plugs and/or wires, fuel injectors. These are more common reasons, there are others but this a good start.

Posted on May 15, 2009

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3 Answers

I have a 97 Dodge Ram 1500 with a 5/9 in it I put plug wires on it and now it's popping and it lost power and it had a code po302 and Po 307

The P0302 code means that the cylinder 2 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder 2. If the problem persist more tests needs to be done. PO307 is the same thing except number 7 cylinder. Possible symptoms - Engine Light ON (or Service Engine Soon Warning Light)
- Lack/loss of power
- Hard start
- Engine hesitation

Nov 29, 2015 | Dodge Cars & Trucks

1 Answer

I have a 03 ford explorer codes p0307 p0316 what could cause that injects good

You have to use Google to find your codes
& study OBD2 Systems
Forget the PO316
The PO 301 thru PO 308 are engine cylinder misfires
On a 2003 --11 year old ford veh you replace ALL
8 COP Ignition Coils
They only last about 6 to 7 years
Some will set a PO300 code
Some with set lots of codes even with just one bad coil
Some coils are so bad they will shut the engine off anytime
& any where under any conditions or temp
There are alos 3 or more ways to diagnose the coils
With no experience & over 7 years on them,buy all 8 coils
from Rock Auto & replace
Also the front Oxygen Sensors get replaced at 100,000
The last number as in your 307 is cylinder #7
Some fords you have
A,B,C,D,E, etc
1,2,3,4,5 etc
PO 301,302,303,304 etc
All 3 examples are the same thing or cylinders

Aug 10, 2013 | Ford Cars & Trucks

1 Answer

Wat are the trouble codes PO135 andPO300 on 5.7liter vortec

Code 135 is for a problem with the heater circuit for the O2 sensor for bank one sensor one.
Code 300 is for a random miss that is not serious enough to peg a cylinder.

Jun 28, 2013 | 1998 Chevrolet C1500

1 Answer

P300, p507 codes on my 1998 vortec 5.0 litre silverado engine

Well code 300 is for a random cylinder miss, and code 507 is for a problem with the idle air control valve.
The computer controls idle speed by regulating the amount of air entering the intake thru the control valve. Code 507 is saying the engine is running too fast at idle. It could be a faulty valve or a vac leak among other things.

Apr 12, 2013 | 1997 Chevrolet K1500

2 Answers

What is a p0300 code

I found on line that the p300 coad is a random missfire in all cylinders and that the last number in a p300 code is the cylinder that is misfiring. Your p302 & p303 would be #2&3 cylinders.

Sep 18, 2012 | 1998 Dodge Caravan

1 Answer

L got two po numbers am trying to solve. would like to know what they are. they are po# 155 and po#307

P0155 indicates a problem with the heater circuit for sensor #1 on bank #2. P0307 indicates a misfire detected in cylinder #7.

May 10, 2011 | 2004 Dodge Ram 1500

1 Answer

V6 blazer/code 300/changed plugs,wires,coil,vaccum hoses,and still will not start on cold damp days if not run the day before. cranking rpms 100 or less.

Wet weather starting and missfire problems are almost always in the ightion system. The cap and rotor are the most common reasons and the coil is next. Code 300 is random multicyclinder missfire. The coil wire even if it's good can get intotroble. Something that's fun to do if you can is to watch the motor while your trying to start it in the dark. Sparks should'nt be ging anywhere so if you see some those parts are bad.

Mar 04, 2011 | 1998 Chevrolet S-10 Pickup

1 Answer

Code po 455 and code po 307

P0455: EVAP- no purge flow or large leak. Check for leaks in the evaporative purge system.
P0307: #7 cylinder misfire. Check spark plug and wire.

Aug 23, 2010 | 2000 Ford Explorer

1 Answer

Truck has 10 different PO codes

171 and 174 mean not enough fuel po 300 multiple missfire could be not enough fuel 430 can be caused by bad ignition in the cat from not enough fuel // first thing borrow a freinds mass airflow sensor

Jul 06, 2010 | 2005 Ford F 350 Super Duty

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