Again... another misfire, just what I hoped for.

[Rocco Reviews...]

The FIAT is misfiring again. The mileage reported is actually off by 500 miles, so 50,540 is the actual mileage. I PM'd 500 Madness, to see what they have to say. We might actually have to make a trip there now.20210220_173349.jpg

[BigDaddySRT]

The FIAT is misfiring again. The mileage reported is actually off by 500 miles, so 50,540 is the actual mileage. I PM'd 500 Madness, to see what they have to say. We might actually have to make a trip there now.20210220_173349.jpg

Can you update us on why 500 Madness is responsible for your Misfires?

[Rocco Reviews...]

Can you update us on why 500 Madness is responsible for your Misfires?

They're not, I meant that I PM'd them to see if they can figure it out. Lol.

[HalfPint]

They're not, I meant that I PM'd them to see if they can figure it out. Lol.

It's just a misfire, why not have a mechanic diagnose it? What are the codes?

[Fiat500USA]

The FIAT is misfiring again. The mileage reported is actually off by 500 miles, so 50,540 is the actual mileage. I PM'd 500 Madness, to see what they have to say. We might actually have to make a trip there now.20210220_173349.jpg

Sorry to hear. A P0300 random cylinder misfires can have many causes. It's hard to diagnose something over the internet, but some of the following questions can give you clues. The stuff listed below is the easy stuff and just part of normal maintenance and you want to make sure that was done and out of the way before going going further.

You want to start at the basics. Have you had any work done recently?

Some other basic questions:

1. Did you check your oil? Low oil can cause misfires.
2. How many miles on the oil? Dirty oil can also cause misfires.
3. What's your oil change schedule? Do you go past the oil change reminder?
4. What weight oil do you use?
5. Do you use ANY additives?

Next have you changed the spark plugs? If you have:

1. At what miles where they changed?
2. What kind?
3. Did you gap them?
4. How where they gapped?
5. Did you use a torque wrench to install them. Unless a person has experience and a good feel for installing plugs, they can be under or overtightened. Both can bring issues.

If the coils were out, how did they look? Any rust in the connector, or more likely, was there oil in the spark plug well? The coil connectors can be easily broken. Are they tight and intact.


You also said you have misfires again. How did you fix them before?

[smark]

Just have your parents, take the car into the Fiat dealership. Have them diagnose the problem.

P0300 indicates that two or more cylinders are experiencing misfires. A misfire occurs when an insufficient amount of fuel is burned in a cylinder. ... A misfire from two or more cylinders can be caused by many reasons from a faulty ignition system, fuel system, or internal engine failure.

[BigDaddySRT]

Just have your parents, take the car into the Fiat dealership. Have them diagnose the problem.

2014 FIAT 500 1.4i MultiAir Pop
50,540 is the actual mileage

Well outside a warranty repair unless they have an extended warranty.

[Rocco Reviews...]

It's just a misfire, why not have a mechanic diagnose it? What are the codes?

Because the people at 500 Madness actually drive FIATs. They now what they're doing, I think. P0300.

[Rocco Reviews...]

Just have your parents, take the car into the Fiat dealership. Have them diagnose the problem.

P0300 indicates that two or more cylinders are experiencing misfires. A misfire occurs when an insufficient amount of fuel is burned in a cylinder. ... A misfire from two or more cylinders can be caused by many reasons from a faulty ignition system, fuel system, or internal engine failure.

If it'll make it 20 miles there, I think it will. I was thinking that it might be the coils.

[smark]

Because the people at 500 Madness actually drive FIATs. They not they're doing, I think.

The technicians at the Fiat dealership, go to extensive training. At FCA training centers. There very capable of fixing any Fiat vehicle. In fact, any qualified automotive service center, can work on Fiat vehicles.

Madness service smart cars too.