Question about 2000 Ford Focus

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Water in plugs

Got an answe but not sure there is water in my plug points and my light for engine malfunction is showing the mechanic is puzzled its a ford focus 05

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The ford focus suffered from leaking washer jets. The water leaked down into the recess for the spark plugs, causing them to misfire.
Sometimes this put excessive load on the ignition coil and it failed too.

Also i have had, worse case is the coil short circuits back up the earth switch, back to the ECU, blowing that.
The car still runs but only on 2 cylinders.


Posted on Jan 30, 2009


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Posted on Jan 02, 2017


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Still having problems will not run good. 1997 ford 2.0 escort;new plugs&wires coil;fuel pump still codes 0351;

From a reputable repair website:

P0351 - OBD-II Trouble Code

Auto Systems and Repair

Ignition Coil "A" Circuit Primary/Secondary Malfunction Our emissions expert has put together the following information about the P0351 fault code. We have also included diagnostic procedures you can take to your repair shop if the mechanic is having difficulty analyzing the code.
OBD II Fault Code
  • OBD II P0351 Ignition Coil "A" Circuit Primary/Secondary Malfunction
What does this mean? The ignition coil or coils are responsible for igniting the air/fuel mixture inside the combustion chambers. Without reliable performance from the ignition coil(s) the vehicle will stumble and misfire.
Code P0351 indicates there's an electrical problem in either the primary ( the computer side ) or the secondary ( the spark plug side ) of the Ignition Coil "A" Circuit.
  • Check Engine Light will illuminate
  • Engine idles rough
  • Engine misfires on acceleration
  • In rare cases, the engine may not exhibit noticeable symptoms
Common Problems That Trigger the P0351 Code
  • Defective Ignition Coil(s)
  • Defective Spark Plug(s)
  • Intake Manifold Vacuum leaks
  • Carbon buildup in the Throttle Body air passages
  • Defective Idle Air Control Valve or Electronic Body
Common Misdiagnosis
  • Ignition coil(s) replaced when cause of the malfunction was a vacuum leak
  • Spark Plugs replaced when cause of the malfunction was a vacuum leak

Dec 21, 2014 | Ford Cars & Trucks

1 Answer

I am sputtering up hills and loosing power with hard exceleration.

Hi joel , a few things to look at : Do you have a Engine management light staying on after the engine has taken ? , if so you will have to get a proper diagnostics test done , your onboard computer has the ability to store intermittent glitch information and produce a code which will point you in the direction of the problem.

No malfunction indicator lamp showing : make sure there is in fact a light showing when the ignition is turned on .

Now observe the condition of your primary and secondary circuit , check the wire connections at the coil or each coil depending on the application , check all other wiring leading to and from any sensor on the engine .

Air filter inspection clean or replacement . Check the condition of the spark plugs (if you have a lean burn white electrode)

Your condition described points a lot in the direction of low fuel pressure , have the fuel pump pressure checked out and replace the fuel filter.


Sep 01, 2014 | Cars & Trucks

1 Answer

Engine misfire and flashing check engine light

P0205 Chevrolet Injector 5 Control Circuit You have a bad injector , burnt PCM driver or a wiring problem . Videos on youtube. How to test fuel injector circuit with basic tools open control wire

It's not an ignition system problem !

Mar 12, 2017 | 2003 Chevrolet Impala

1 Answer

Had water pump replaced on a 99 ,trying to see w hats malfunctioning has new plugs ,wireboots ,coils and may be timing belt as mechanic sais looks loosemissingteeth or something... l sputtering ,jerking...

Maybe find a better mechanic, because you car doesn't have a timing belt. Did you have this problem before the water pump was replaced? What engine do you have? He may be able to check IAC operation and crank sensor. Fuel pressure verified good?

Aug 29, 2011 | 1999 Chevrolet Malibu

3 Answers

ACURA TL 2000 check engine light is flashing

See if your car has an ignition control module. They will go bad over time and cause random engine misfiring. Just went thru it with my 2002 Buick LeSabre. 120,000 miles on the engine. Replaced plugs, plug wires and check the coils. It was the ICM.

Mar 18, 2010 | 2000 Acura TL

5 Answers

2005 will not start

if it turns over then a thing might be the distributor cap and roder. happened with my Tahoe

Aug 14, 2009 | 2005 Chevrolet TrailBlazer

1 Answer

1999 Town Car began running very rough - suddenly.

When cleaning your engine, water/degreaser went down the spark plug ports. Try using a air compressor blow gun to remove the moisture from around the spark plugs and boots. The water was causing the engine to misfire on 3 cylinders at first and as the ports started to evaporate the moisture, the less misfiring was occuring. Dry thouroughly and hopefully coils do not have damage to them. Also check to make sure the boot is making good contact with the spark plug.

Mar 23, 2009 | 1999 Lincoln Town Car

1 Answer

Water in plug points

If the car is running alright, and not hot, I would change were I bought my gas......

Jan 30, 2009 | 2000 Ford Focus

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