Good article on LSPI, worth a read

[EONR24]

Neither of those help with lspi. The tune can definitely help, along with oils and fuels. The cooler plug keeps those and surrounding area from damage. And the smaller gap is only to keep the spark from being “blown” out with the heavy charged air.

Has anyone found that Maverick ecoboost is prone to LSPI yet? No..

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[LC48]

Not that I am aware of. It is a part of Ecoboost history and development however, so is of interest to some of us. It does also illustrate the importance of using an oil that meets the specs.....

 

[Snox801]

What are you talking about? The Motorcraft synthetic blend 5W30 spec'd in your manual meets SN Plus, moreover any oil that meets the Ford spec WSS-M2C961-A1, also spec'd in your manual has to meet SN Plus, to in Fords own words, avoid oil derived LSPI. Not sure you actually read the article......

Something in this post is ridiculous, you decide which.....

Exactly, not like Lake speed was pushing any oil in the article. In fact he said both were true. The good oil is needed and it happens much less when warm. Two things can be true at once.

 

[Snox801]

LSPI is LOW SPEED PRE IGNITION. It is simply Pre ignition happening at low speeds... I read the article. Thanks. Like it or not the Maverick Ecoboost ENGINE is very similar to the Focus ST Ecoboost ENGINE.. That's why I mentioned it..

Yes it is very similar and yet very different. Completely different heads, turbo, and wastefate system, but what do plugs temp and gap have to do with lspi? Also doesn’t really matter if it is similar it’s an auto which means we won’t be able to load the motor at low rpm like an ST. It will downshift.
I wasn’t the one who brought up either of those two things as fixes like it or not what I said was true.

 

[Snox801]

Has anyone found that Maverick ecoboost is prone to LSPI yet? No..

Agreed and we more than likely won’t because it’s an auto. Hard to load at low rpm. It will downshift

 

[LC48]

Agreed and we more than likely won’t because it’s an auto. Hard to load at low rpm. It will downshift

Never know, these boys pushing the 11-second runs will likely be the first IF it happens. They are pushing the hell out of this EB, and its allegedly weak transmission, and so far she just keeps rockin...

 

[EONR24]

Yes it is very similar, but what do plugs temp and gap have to do with lspi? Also doesn’t really matter if it is similar it’s an auto which means we won’t be able to load the motor at low rpm like an ST. It will downshift.
I wasn’t the one who brought up either of those two things as fixes like it or not what I said was true. Not sure what you’re getting at. You stated that you had a ST. Those can get lspi easy being Manuel. But I was pointing out the fact neither the colder plugs, or the gap had anything. To do with lspi. That is not why tuners use colder plugs gapped tighter. The two reason I gave where the reasons they recommend them.
Now you’re acting butthurt.
Other than that yes lspi is low speed pre ignition. Not sure what your point was

Im not acting butthurt. Im stating facts. My point in bringing it up, is that DETONATION is more likely to happen in this engine (and the ST engine) than LSPI. Plugs and gap DO affect DETONATION. LSPI is not a common problem with Ecoboosts to my knowledge.

 

[Snox801]

Im not acting butthurt. Im stating facts. My point in bringing it up, is that DETONATION is more likely to happen in this engine (and the ST engine) than LSPI. Plugs and gap DO affect DETONATION. LSPI is not a common problem with Ecoboosts to my knowledge.

True for this engine but not the st. The st and rs were plagued with lspi. Detonation is controllable with octane and mapping. Get the mapping right for Oct and detonation won’t happen. Considering this is specifically about lspi why are you talking about detonation anyway?
Only way detonation will happen is wrong fuel on stock mapping. Since our 2.0 is mapped for 87 detonation is not an issues. Lspi in fact is much more an issue for ecoboost that detonation.
Again plug heat range and gap again do not have an affect on detonation either. They are used specifically for the two reasons I stated. It’s been hashed out by Livernois, montune, Ford performance, tune plus, and many others.
So yes lspi is a bigger issue than detonation for stock ecoboost.
But it’s much less a factor in anything auto that Manual. But lspi from carbon deposits can be an issue with our 2.0.

 

[Snox801]

Never know, these boys pushing the 11-second runs will likely be the first IF it happens. They are pushing the hell out of this EB, and its allegedly weak transmission, and so far she just keeps rockin...

Pushing them hard is much different than loading at low speed. They are not starting at 1k rpm and loading with boost.

Lspi mainly happens say 4th gear manual trans low rpm and getting into the throttle hard without downshifting. Building boost at low rpm has been the main cause. This motor is tough for sure and the trans seems to be pretty good also. The fact I haven’t had any issues with what I haul and being tuned is good proof so far. But time will tell.

 

[colinl]

Well they were one of the very first to figure it out and launch an oil to stop it.
Was a very hot topic in the focus rs world. They were only one of a few that had a 5w50 to start with then the lspi addressed. So like many things the first ones to find it and fix it will get some credit. Now several other have adapted.

I generally respect your experience but there's absolutely no way I would believe that a particular synthetic overpriced oil would have any effect on pre-ignition.

 

[Snox801]

I generally respect your experience but there's absolutely no way I would believe that a particular synthetic overpriced oil would have any effect on pre-ignition.

Don’t take my word for it, read the link, Lake speed lays out that the oil absolutely makes a difference. That and the fact GM and Ford both had to come out with a new oil spec for the vehicles tells us oil 100 percent plays a roll. Now as for one kind. I never said only one brand protects against it. Several do amsoil being one. But also Ford and GM have oils. So you do not have to buy the expensive oils but oils does in fact make a difference. With that said most oil that meets the specs is gonna be more expensive.
Sorry if I made it sound like only one did the job. That was not my intention.

 

[LC48]

You didn't make it sound that way at all @Snox801 , no one is pushing oil either in the thread or in the article, oil of any price or manufacturer. Seems he has an axe to grind.

Oil is clearly an important cause, but not everyone is ready to agree it is the only cause. Fomoco is very careful to use the term "oil induced LSPI" for example.

This is an article of interest to folks interested in the EB family of engines and the issues / design considerations, etc. discovered / solved along the way.

That's why it's posted in the 2.0l ecoboost engine section, and not in the section discussing Amazon accessories.

Surprised the purse-swingers haven't shown up claiming this is somehow going to void my warranty....

 

[Deleted member 30736]

Surprised the purse-swingers haven't shown up claiming this is somehow going to void my warranty....

 

[Snox801]

You didn't make it sound that way at all @Snox801 , no one is pushing oil either in the thread or in the article, oil of any price or manufacturer. Seems he has an axe to grind.

Oil is clearly an important cause, but not everyone is ready to agree it is the only cause. Fomoco is very careful to use the term "oil induced LSPI" for example.

This is an article of interest to folks interested in the EB family of engines and the issues / design considerations, etc. discovered / solved along the way.

That's why it's posted in the 2.0l ecoboost engine section, and not in the section discussing Amazon accessories.

Surprised the purse-swingers haven't shown up claiming this is somehow going to void my warranty....

Good to know it wasn’t just me. I was not sure if it came out wrong. But I agree with everything above. Especially the warranty police.

 

[colinl]

Don’t take my word for it, read the link, Lake speed lays out that the oil absolutely makes a difference.

well, first of all, I checked and Motorcraft 5w-30 synthetic blend is SN+ rated so someone just following the basic maintenance schedule at their Ford dealership is going to be fine. but I just love a good technical discussion/debate despite my earlier short, flippant reply. and I definitely do not like this credit in the article: Images courtesy of Driven Racing Oil, Amsoil and Total Seal

so here goes...

there are 4 theoretical conditions identified in that article. if I may summarize:
1. carbon deposits in the intake tract detaching and forming a hot spot. could definitely happen. carbon buildup is a known issue of gas direct-injected engines.

(discussing #2 intentionally last)

3. oil and engine temp. says to warm your engine to at least 100C, obvious, yet still some don't follow this simple process.

4. lean air/fuel ratio. we know that fuel economy comes from modern engines running extremely lean at part throttle and yet surviving. this is a really good reason to run 91+ octane in your ecoboost engine, even if it's stock.

and #2 - the presence of oil.
2. tiny amounts of oil getting past the rings (it would have to be both oil and compression rings, which a healthy engine should not do) and then this mixes with atomized fuel/air and causes a hotspot.

The second, more common theory involves droplets of oil that sneak past the rings and mix with fuel. The two fluids mix into a droplet, create a hot spot, which causes the fuel mixture to ignite before the spark plug fires, while the piston is still rising in the cylinder. These droplets are still measured in microns, but they are larger than what you find in highly atomized fuel.

let's think on that a moment. is oil more combustible than gasoline? clearly not. if a few microns is atomized and mixed with gas, would we really expect the flashpoint to decrease? It seems to me that the presence of oil would be more likely to lower combustion efficiency rather than cause pre-ignition.

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