Why are all cylinders misfiring after coil and plug replacement?
Compression test is needed. Also, you stated plugs were replaced — were the old plugs oil fouled at all? These engines could have piston and ring issues due to lack of maintenance (enough frequent maintenance, that is…), and the spark plugs can get fouled quickly.
How to fix a misfire on a Ford Edge?
FORD EDGE MISFIRES NEW IGNITION COILS NEW SPARK PLUGS STILL MISFIRES. HOW TO FIX MISFIRE – YouTube
What to do if your spark plug is misfiring?
Anybody have any ideas. Ive replaced the gaskets on the 2 cylinder cases as well as the spark plug tube seals with gromets. New gasket on the throttle body new MAF sensor and a few hoses as well. Also cleaned the EGR valve can pull the little piston down on it but not sure if working not getting a code for that. The timing is okay as well.
What happens if you have a cylinder misfire?
Ensure you consult a good auto mechanic to fix the problem quickly if your engine is misfiring. This is because misfires reduce gas mileage and increases emissions, which can cause you to fail an emission test. Cylinder misfires can equally cause damage to other parts of the engine, like the oxygen sensors or catalytic converter.
Can a bad coil pack cause a misfire?
Ohm out the wire harness for the coil Pack for Cyclinder number 2: You may have a chaffed wire, bad ground, or bad connection at Coil Pack 2 ?? I Have seen in VW’s that the ignition control module when it goes bad can cause a cylinder # 2 misfire, but in this case BMW M52TU engines do not use such a device!
What to do if you have a spark plug misfire?
I suggest first removing and checking the spark plug and swap in a new one or swap with cylinder next to it. This way the misfire moves to other cylinder then you know it was plug and replace it. If misfire still on number one then check for spark and injector pulse and replace injector or coil as needed.
When to replace spark plugs and coil packs?
This way the misfire moves to other cylinder then you know it was plug and replace it. If misfire still on number one then check for spark and injector pulse and replace injector or coil as needed. The statements expressed above are only for informational purposes and should be independently verified.
Can a failed ignition coil cause engine damage?
When carbon tracking is found, the coil and corresponding plug should be replaced. It is also possible that a failed ignition coil can cause damage to the engine computer, or ignition control module. Commonly an engine computer detects a misfire by measuring the changes in crankshaft speed.
What to do if you change spark plugs and coil packs?
Then the next step is to do a compression test on all the cylinders to ensure they are holding compression evertime the pistons are moving the way they should and the piston rings aren’t in need of repair & check the timing to make sure it hasn’t jumped time , Certified Master Auto Technician for 25 years.
What is the code for a failed coil?
Neither code is a slam dunk diagnosis for a failed coil. Instead of throwing a set of anything, let’s concentrate on cylinder #5. SWAP positions of 2 coils.
Neither code is a slam dunk diagnosis for a failed coil. Instead of throwing a set of anything, let’s concentrate on cylinder #5. SWAP positions of 2 coils.
What causes a misfire in a car ignition?
Then its your timing. Take your car to the mechanic and have the timing corrected. Misfires are solely the result of either advanced or retarded cam timing, as the ignition is firing either too early causing what is known as premature ignition, or too late, resulting in unburnt or still burning fuel being pushed into the headers.
Compression test is needed. Also, you stated plugs were replaced — were the old plugs oil fouled at all? These engines could have piston and ring issues due to lack of maintenance (enough frequent maintenance, that is…), and the spark plugs can get fouled quickly.