Another blown ecoboost Engine

[Mattrix]

Dang, a little touchy. As I said I will create my own post later this week. I want my car back first so I can review everything ford found so I can add more to this discussion.

Short story, my engine blew up 3 weeks ago. It had nothing to do with lspi, oil issues, that I know of or crazy mods. It happened it 2nd gear at about 4K rpms. So people constantly saying don't gun it in high gear and you will be fine are giving people bad advise.


Sent from my iPhone using Tapatalk

Yeah mine blew in 3rd gear around 3k or so RPMs. I had those stupid ass JMS modules though and that is what caused mine to blow. The engine itself is amazing and definitely doesn't have a design flaw :lie:

Sponsored

 

[GordonGekko]

It would probably be best if we just talk about all the ads that litter the screen when I view this forum. Yesterday it was a bowl of maggots, today it's pictures of plump women selling weight loss stuff. That's pertenant isn't it since its on the forum?


Sent from my iPhone using Tapatalk

Looks like I'm not the only one who Googled "bowl of maggots."

 

[GT Pony]

Really the only 'safe' mods will be suspension and cat back exhaust but it would void suspension and exhaust warranties. I doubt a catch can would cause any issues. But they could try and say a motor popped from running lean because of unmetered air through a 'faulty' catch can. I would not put it past some dealers to unhook the hose if they didn't want the warranty work. Not likely but possible.

The dirty air going through a catch-can is not metered (the same way as having no catch-can) because it goes into the intake manifold after the MAF sensor.

I highly doubt a catch-can will void any engine warranty. If the dealership tries to use a catch-can as an excuse, he is either ignorant of is just trying to find any excuse to not honor the warranty.

 

[GT Pony]

LOL, you have that too? I am getting so sick of seeing that stupid ad. Think it is for blood pressure medicine or something... :frusty: Have never searched for that in my life yet it is up there almost every day on this site!

Firefox with Ad Blocker Plus FTW!

 

[GDP]

The dirty air going through a catch-can is not metered (the same way as having no catch-can) because it goes into the intake manifold after the MAF sensor.

I highly doubt a catch-can will void any engine warranty. If the dealership tries to use a catch-can as an excuse, he is either ignorant of is just trying to find any excuse to not honor the warranty.

If a catch can hose at the intake side were to be disconnected that is unmetered air entering after the MAF.

 

[DIBS550]

Sounds like Ford needs to put out an ECU update to address this if it's really the cause. I'm sure the Ford engineers can figure out how to safe guard the engine if LSPI is really happening ... or anything else that is the root cause.

My guess is that the safeguards in the ECU tend to do a pretty good job of protecting against it. However, if you have a little bit of a defect or damage already, it might go boom. Of course, that's just a hopefull guess.

 

[Evil87GN]

The dirty air going through a catch-can is not metered (the same way as having no catch-can) because it goes into the intake manifold after the MAF sensor.

I highly doubt a catch-can will void any engine warranty. If the dealership tries to use a catch-can as an excuse, he is either ignorant of is just trying to find any excuse to not honor the warranty.

Air going into the intake isn't metered anyway....no MAF sensor.

 

[GT Pony]

If a catch can hose at the intake side were to be disconnected that is unmetered air entering after the MAF.

Yeah, but what kind of idiot would do that without plugging off the intake manifold port? If the manifold is sucking air directly from the atmosphere, then it's a big vacuum leak. Engine is not designed to run right with big vacuum leaks.

 

[GT Pony]

Air going into the intake isn't metered anyway....no MAF sensor.

All air going into the engine - including the clean air side of the PCV system - IS going past the air flow sensor in the intake tube (regardless of what the correct acronym is for it ;)).

 

[Dannyho]

All air going into the engine - including the clean air side of the PCV system - IS going past the air flow sensor in the intake tube (regardless of what the correct acronym is for it ;)).

I'm pretty sure that's just a temperature sensor, and doesn't measure flow. not to be confused with the charge air temp sensor, which is on the other side of the turbo. these engines are speed density as i understand it, not alpha-n, or whatever variation OEMs use. The GT, like yours, however, does have a MAF.

of course the issue is still ingesting unfiltered air.

 

[GT Pony]

I'm pretty sure that's just a temperature sensor, and doesn't measure flow. not to be confused with the charge air temp sensor, which is on the other side of the turbo. these engines are speed density as i understand it, not alpha-n, or whatever variation OEMs use. The GT, like yours, however, does have a MAF.

of course the issue is still ingesting unfiltered air.

I was talking about the V8 Coyote ... sorry, didn't make that clear in previous posts.

Bottom line is, regardless of which engine, adding a catch-can in the stock PCV line does not change anything in terms of air flow from the crankcase to the intake side of the engine unless there is a huge restriction in that line for some reason.

 

[paul123]

... Virtually all of the examples of this motor blowing are from people passing cars while remaining in 5th or 6th gear instead of dropping down to 4th. Most of the time people get away with it, but a small percentage of the time people don't. It is a known weakness in this motor. If you look up LSPI you can read all about it.

I hadn't heard of the term before this thread.

This is a cool video linked on the velosterturbo forum :

LSPI-w-IntroNOV
http://origin-qps.onstreammedia.com/origin/lubrizol/Markets/EngineOilAdditives/131995LSPI%20animations/130132-LSPI-w-IntroNOV.html

Seems like if this is an known issue, then dealerships should disclose this information to prospective buyers. Plenty of enthusiasts will buy a direct inject Turbo with manual transmission, and then quickly load a custom engine tune, leaving their engine warranty behind.

And if the car generates a lot of torque down low, they may not realize that they are supposed to downshift. Or they forget. Or they drop their car off at the mechanic, and the mechanic goes for a joy ride and fails to downshift. From the sounds of it even if LSPI doesn't cause immediate damage, it could weaken the motor over time.


edit: should this thread be in the Issues / Warranty section ?

 

[Kjewer1]

Anyone saying that LSPI is just another term for old fashioned preignition doesn't understand what LSPI is. Engines of days gone by were not capable of generating the conditions required to produce LSPI. This is specific to GDI engines with tiny turbos, regardless of manufacturer.

It might seem logical that the OEM should program the ECU to prevent LSPI, but they purposefully run the engines near LSPI conditions for maximum economy and best emissions. They know what it is and are not trying to avoid it. Have to blame the tree huggers I guess. Luckily with the ability to tune these cars we can program the ECU to avoid those conditions ourselves, giving up some of that economy. Most of us will make the compromise. The government won't let the OEM do it. ;) Some people feel that Ford has the best handle on LSPI as an OEM, I'm not enough of an expert to give an opinion there. I've adjusted my tune to prevent operation in the LSPI region and don't worry about it any more and just enjoy the car.

 

[GT Pony]

It could be on these few engines that have blown up from supposed LSPI, that they may have a sensor or two that is a little out of range and giving an inaccurate input signal to the ECU which makes the LSPI more pronounced on those cars. If the tune was totally messed up, you'd think there would be way more blowing up than what we've seen so far.

 

[Asharus]

i used to floor my 2011 wrx in 5th at about 2500-3000rpms when it was stock and also when it had a tune, before i figured out it's bad for the engine.

eventually i found out that it's bad to do that on turbo cars (it was my first turbo) so i stopped doing it. thankfully nothing happened and i continued to mod the car will full bolt ons, fuel upgrades, E85 tune etc and it never blew up until i sold it at 80k miles.

if a junk engine like that, designed in the early 90s and is prone to busting its ringlands and pistons/rods, i would think a modern FI EB engine should be able to hold up to some abuse, especially while stock....

maybe the manual should state a warning, never go WOT in 5th or 6th below 3k rpms? i'm only kidding of course, but it sounds like it needs an insert in there....

i'm glad you were covered under warranty, good luck with it.

Sponsored