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Engine management light on my mechanic said codes say #5 cylinder but he's done coils and that didn't work performance fine just sounds like miss firing

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  • Cars & Trucks Master
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New plugs and wires are needed,start the car at night,open the hood and look for sparking,in the dark

Posted on Apr 15, 2015

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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: engine check light& error code p0301 on my 2003 rav 4,

Unless your computer in your car is faulty... the check engine light came on because it, or one of your vehicle's many sensors detected something within your vehicle was not operating under preset factory conditions. Fortunately, the error code that was extracted was indeed a cylinder # 1 misfire, which is fairly basic. Could be a bad spark plug, wire, etc. or you may have gotten some condensation inside the plug boot. Your mechanic did indeed clear the code, but drive it for awhile and see if it repeats. Normally with a cylinder misfire, you'll notice a small stutter when you accelerate or idle. If your Check Engine light returns, have the codes extracted once more. If the same cylinder is misfiring, have him replace the spark plug and wires.

Posted on Jun 10, 2009

  • 416 Answers

SOURCE: Engine has miss-fire

First check spark plugs/wires/distributor cap (tune up). Also would be good idea to use fuel injector cleane and change fuel filter and O2 sensor.
Hope that helps
Good Luck

Posted on Mar 22, 2009

  • 108 Answers

SOURCE: 1998 Mercury Grand Marquis. Check Engine light on

is not ford,driverside front close to rad #1,and then2,3,4 [same side]and pass. side front 5,6,7,8 [if only 6cyl you have 123and 456?

Posted on Dec 12, 2009

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SOURCE: diagram of spark plug

Check this for 4.6 or 5.4 sizes engine...

2004 Ford Expedition 4.6 liter V-8 VIN "W"


2004 Ford Expedition 5.4 liter SOHC V-8 VIN "L"


Hope this help (remember comment and rated this).

Posted on May 05, 2010

Testimonial: "thanks for the info. I worked like a charm"

  • 496 Answers

SOURCE: 02' Ford escape 6 cylinder:

Although you say you have coils misfiring, it sounds like you are not sure.

Trade the coils on cylinder 4 and 5 with coils on 2 and 3. Erase the codes and try to run the engine again. If the misfire code comes up on 2 and 3 this time, the coils are definitely the problem. If the code comes up for 4 and 5 again, there is something else besides the coils that is causing the misfire on those two cylinders.

Things to check: sticking or faulty EGR valve, vacuum leaks on intake manifold gasket near or between the runners for cylinders 4 and 5, clogged fuel injectors, a bad ground for the powertrain control module (PCM or computer), wiring problems to the coils.

Posted on Mar 07, 2011

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that sounds like those cylinders injectors might be the problem . When an injector over fuels or fails to supply fuel it would create a misfire just like if a plug or coil failed

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Your going to be spending plenty

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There is an a engine miss in my es 300 99 lexus

If you have coils and spark plugs then you don't have wires. From personal experience these car's misfire because of coils and BAD INJECTORS. If you replaces coils and sparks plugs you need to check injectors. Get a NOID light and check injectors pulse to make sure it good. First you must locate the cylinder that has the misfire/Missing,this can be done by using a computer/code scanner or if can be manually by disconnecting each coil and see when there is NO change in idling or shaking. What you are looking for is when you disconnect the Eugine should shake more and when you reconnect it would smooth en out. If any cylinder when disconnected the engine doesn't change that the one with the problem. Check again for spark and make sure it good. Then check that injector pulse plug off injector connector and connect it to NOID light you should get a constant flickering of NOID LIGHT. If you do then BINGO that injector is BAD. However I must say this test is on valued if you have performed a compression test on all cylinders to make sure there are no BAD/Burnted valves. This can be done with a compression guage remember the reading should NOT be more than 10PSI difference between all cylinders example of a normal reading is cylinder 1 170 psi cylinder 2 168 cylinder 3 172..... abnormal is cylinder 1 170 cylinder 2 85 cylinder 3 172 ...etc. I know this is alot of info but read through and follow these step and you'll be ASE certified by the end of this job. Good luck and thanks for using FIX YA

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