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New spark plugs do not always come pre-gapped. It is always wise to check the gap before installing. The routing of the leads have to be in the same order as they were removed, otherwise cross-firing can occur. Ensure the leads are installed at the distributor in the correct firing order.

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Q: Ford Focus 1.4 misfire new leads fitted new plugs fitted?
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Why is there no picture on my lcd television?

You have not turned it on Check power plugs, power leads switches etc


How are the safety devices in an electrical circuit connected?

Heaters,Electric blankets,clothes dryers,stove ,oven,cook top,Hot water cylinders,Plugs,Multi-boxes,Lighting,Cords and leads,small-appliances,


Are wall plugs parallel or series circuit?

They are parallel. Each plug is in parallel with the other plugs.


How many spark plugs there are in six cylinder engine?

There would be six spark plugs for a six cylinder engine. One for each cylinder. Unless it is a diesel, then there are no spark plugs.


What is a freeze plug?

freeze out plugs are metal plugs in the block and heads of your engine. they are are there if the coolant was mixed wrong with to much water and the vehicle freezes they will pop out allowing expansion of freezing liquid hopefully saving the engine Part 2: You will see these called freeze plugs, casting plugs, welsh plugs and probably other terms. The holes they plug are part of the cylinder block casting process to allow molten steel/iron/aluminum to rapidly flow into the block casting mold. The fact that they will pop out if the coolant in the engine freezes can be serendipitous but in most cases the plugs go bad due to galvanic action: the steel plugs installed at the factory are dissimilar to the engine block metal and will start to corrode (rust) and will start leaking after a while. This is why most antifreeze manufacturers claim they have anti-corrosion protection; it is also why 99% of replacement plugs are brass. Three points to remember: 1) before replacing plugs do your research and find out EXACTLY how many plugs your engine has and where they are. 2) if you have to replace one plug, replace them all. 3) if you are rebuilding an engine it is cheap insurance to replace the plugs.

Related questions

Your ford focus is not firing on cylinders 1 and 4 you have changed plugs leads and coil but no luck?

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How do you fix a P0303 cylinder 3 misfire detected code on a 2001 Ford Focus SOHC?

New spark plugs and plug wires. Do not gap the plugs, they are factory gapped. If you stick a feeler gauge in them you will ruin the platinum plating.


Why does your Peugeot 306 have a misfire?

check plugs or coil packs..


What would cause a 2000 Ford Focus DOHC with new spark plugs and wires to misfire in cylinder 3 and lose power when driving?

You probably used a feeler gauge and ruined the platinum coating. DO NOT GAP NEW PLUGS. Put them in straight outta the boxes.


What is ignition misfire condition?

one or more plugs won't fire


Do spark plugs cure a misfire 98 Oldsmobile?

If bad plugs is causing the misfire. It could also be bad plug wires, a vacuum leak, burnt valve, blown head gasket, etc.


Why does your 2005 1.4 fiesta zetec misfire when you accelerate?

Whats happening is water from your washer jets is leaking and running down your airbox and somehow gettin into the coil pack/leads or plugs, causing the engine to misfire, engine management light will probaly be on the dash. It can be fixed by changin the coil pack but i would recoment tryin to change the spark plugs and leads 1st. This is a common fault with ford fiesta but it shouldn't happen with your year because they were realled 03/53 plates from then on the washer jets at a rubber seal on them to stop this from happning.


What do old spark plugs do to a car?

Old spark plugs can make a car misfire, run rough, and not fire at all.


Why is my Harley misfiring at rpms over 3000?

Could be coil, leads or plugs. On early models it could also be points. Later models with pointless ignition system problems tend to misfire in all rev ranges


What causes a misfire in cylinder 2 in a 98 Kia Sportage?

Spark plugs


How do you change glow plugs on a Ford Focus?

Unless your ford focus is a diesel your car does not have glow plugs.


What would cause misfire on on plugs 2 4 5 ford escape 2001?

Bad plugs, wire , coil packs if it has them.