By on May 24, 2019

Chris Writes:

Greetings Sajeev!

We’ve just been informed that our 2013 Fiat 500 Abarth has 180-180-180-20 compression and likely needs a new engine. Options are somewhat clouded by a remaining note of about $6,000.

Looks like this boils down to:

  1. Get out, despite the sunk costs and remaining note, and get into a
    more conventional car.
  2. Go the used engine route to save a few $$.
  3. Source a new engine and commit for ~5/6 years +

The SU (spousal unit) is the primary driver and adores the car. I drive it infrequently and find it tedious. It has about 80,000 miles and has been OK on other maintenance issues. All work will be done by a pro – this is so far over my head, mechanically, that there’s just no way – and the car is a daily driver, so commute/mobility issues create additional urgency.

Help!  (Read More…)

By on April 19, 2019
miata
TTAC Commentator Majda writes: 

Sajeev,

I recently bought a 2002 Miata, manual transmission, in silver. The prior owners appear to have been followers of the sans souci school of maintenance, so I have been wrenching on it quite a bit. It has only one problem I can’t solve: a persistent P0301 code, showing a misfire in Cylinder 1. The actual experience of driving the car is fine — I don’t feel a miss or a drop in power. That light, though… it isn’t constant. It doesn’t come on instantly; if I clear it, I might get a few minutes of light-free driving, or an hour, or a day. But after that, the CEL goes blinky-blinky.

Logic suggests that the misfire can only come from spark, air, or fuel, so I went at each as follows:

  • Spark: I’ve replaced the spark plugs (NGKs), plug wires (ditto) and boots. I swapped ignition coils to see if the code would move; it didn’t. The ignition wiring harness has some broken protective tape, but I don’t see any broken wiring.
  • Air: I’ve replaced the air filter and checked for vacuum leaks.
  • Fuel: I replaced the fuel filter, and, to make sure I didn’t have a fuel injector problem, I swapped the injectors between cylinder 1 and cylinder 4. I spilled a bunch of fuel, but the code stayed put.

I’ve been busy fixing other issues (leaking valve cover gasket, cracked radiator, soft top made of cheesecloth) on this Miata, but the P0301 has me stumped. I checked compression, and it’s good across all four cylinders. Forums mostly argue in favor of ignition problems, but I feel like I’ve covered that area.

The big question is this: Do you think new driving shoes will fix the problem?

(Read More…)

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