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New to the Forum. I am considering getting a 124 but kind of worried about the 1.4T. I currently have a Dart 2.0 and belong to the Dart forum. I know a ton of guys on the Dart Forum, where and are having a ton of problems out of the 1.4t which is the same engine in the 500 and this car I believe ,and was just wondering if they have fixed or are people still having a lot of issues with this engine. I'm just starting to do my research on this car. I love the new 124 I'm so glad they brought it back was looking at the MX-5 and ran across the 124 and was way excited.
Thanks in advance for your thoughts and information.
 

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When you say "a ton of problems", are they with the stock engine, or are they issues resulting from modifications?
They where having a lot of issue with the stock engines. also transmission (manual) but not worried about the transmission since this is a Mazda transmission and well proven.
 

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Larry, I can address this, as I deal with the 1.4T in every car it's in (500 Abarth, Dart, 500L, MiTo, Giulietta, and 500 Turbo).

The basic engine and major components are basically bulletproof. The only components I have seen that seems to have an issue are the coil packs, and then only in the 500 Abarth and 500 Turbo's tighter engine bays. There have been a few coil pack failures in some other chassis, and I know of 1 in a 124, but it's pretty rare, and always covered by warranty.

The vast majority of problems have been owner induced, and I'll give some specifics. The Fiat engine uses some technology that's quite different from what was used in older Dodge Turbo cars. On the Fiat side, one vendor in particular had a lot of experience with another European car and stubbornly felt that the Fiat should be set up the same way. They just didn't understand the Fiat engine and they led a lot of people astray and caused many problems.

Here are two perfect examples. A lot of people screwed up the wastegate adjustment. This was because they didn't understand that the engine boost curve is designed to drop off at the high end. In order to "fix" the drop off they would tighten the wastegate adjustment. Then it wouldn't work so they would tighten it up more. Eventually, the engine wouldn't run correctly and they wouldn't be able to set it up correctly again. To make matters worse, the dealers often don't know how to adjust it either, and will replace the whole turbo to fix this! I have made a video to show people how to adjust it, so if you get a car that's been screwed up it can be fixed easily. However the key is just don't screw it up in the first place. These techniques worked with Neon SRT-4s but not on the Fiat.

The second example relates to the car's EVAP system. A small number of very early 2012 Abarth were sent out with a small plumbing issue with the system which was corrected by the dealers. (this physically can not happen on a 124) However a very large number of people hacked up the evap systems causing endless check engine lights. The EVAP system works perfectly, don't screw with it, and it won't be a problem. This specific system could be a major discussion by itself, I have a tech article on it on the eurocompulsion site if you are curious.

The bottom line is that the 1.4T is very reliable. I sponsor 6 race cars with this engine, all with over 200hp, some with over 250, none have suffered engine failures. However, it's NOT a Mazda engine, it's not a Neon, and it's certainly not a Mini. If you don't understand the engine and try and treat it like it's one of these other cars, it's going to cause problems which is what happened in the Dart community and early in the Fiat community.

Greg
 

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Ok Greg,how should I treat the 124 Abart apart from how I treated my Saturn 1.9 SL1 or how I treat my current Dodge Hemi as in regular fuild changes and just drive them.Both remained in stock trim although my future Abarth should get a few tuning bits from you guys.
 

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racergary: Read your owners manuals. Sorry for the sarcasm, but I've have had a few drinks. I feel you should do some basic homework on your stock trim vehicles. Your questions seem to be valid if you have upgrades to your vehicles, but you should say what upgrades you have questions about.
 

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OK, if it's stock, there really isn't any special maintenance. However, the oil is critical. The multi-air system has some very small passages, and the oil takes a lot of harsh use as in any turbo car. So changing it on time and using the correct weight of full synthetic is really important. If you do that, no problem. However if you run some lesser oil, and don't change it on time, expect trouble with the multi-air brick.

Other than that, just normal air filter and spark plug changes, and that's really about it. Basically....stick to the owner's manual and you will be fine.

Greg
 

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interesting post

Larry, I can address this, as I deal with the 1.4T in every car it's in (500 Abarth, Dart, 500L, MiTo, Giulietta, and 500 Turbo).

The basic engine and major components are basically bulletproof.SNIP!

The second example relates to the car's EVAP system. A small number of very early 2012 Abarth were sent out with a small plumbing issue with the system which was corrected by the dealers. (this physically can not happen on a 124) However a very large number of people hacked up the evap systems causing endless check engine lights. The EVAP system works perfectly, don't screw with it, and it won't be a problem. This specific system could be a major discussion by itself, I have a tech article on it on the eurocompulsion site if you are curious.

The bottom line is that the 1.4T is very reliable.

Greg
I'm really perplexed by what people would do to screw-up the EVAP system Greg! Of course, people will mess with things even if they don't need to.
I'm switching from Miata, and selling a car I had for 12 years that was pretty much bulletproof so the Fiat has a tough act to follow. I am looking forward to learning about the 1.4 and will read your article.

Pete
 

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I'm really perplexed by what people would do to screw-up the EVAP system Greg! Of course, people will mess with things even if they don't need to.

Pete
Pete, please allow me to explain this to you. The stock evap system relies on a very small boost leak to purge air from the evap system. Thus it robs a very slight about of power. It's so slight that it's well below dyno tolerances, but I put it about 2hp in the worst case.

Now, when this engine first arrived in the US a lot of people in the Dodge Dart community and on one specific Fiat forum advocated plugging this leak to gain power, not understanding how the system worked. If you are curious about this you can google "Abarth Free Power mod" and sift through the misinformation.

I personally did come up with a way to plug the leak and NOT screw up the evap system, but it involves a solenoid valve and some hoses, and in my view isn't worth the expense for the gains you get. However I did write an article on how to do it.

The short version is, unless you really know what you are doing DO NOT F&^% with the 124's evap system, or boost control system. Change oil and spark plugs on time and the engine is pretty much bullet proof.

Greg
 

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The short version is, unless you really know what you are doing DO NOT F&^% with the 124's evap system, or boost control system. Change oil and spark plugs on time and the engine is pretty much bullet proof.

Greg[/QUOTE]

Greg, staying away from the "engine" I installed your V1 and GFBs DV+ and Goodwin quad exhaust system. Goal was to allow air to flow a little better ISO of the engine. That's is all...and will enjoy the ride from there. Terrific forum.
 
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