Originally Posted by VoiceOfReason

After the weather and temp fluctuations this past weekend during a torrential downpour, I had a power loss event and severe shaking while attempting to pass someone.

I'm almost convinced this problem is severe spark quenching. Especially after seeing the improvements the guys have been having reducing the gaps on the OEM plugs.

I've run into this problem a few times on other vehicles, both turbo and NA with various mods, it is nothing new nor specific to the Ecoboost. Ford is probably aware of this but until they nail down the exact source of the issue, there is no point in throwing more (expensive) parts and labour at the problem until the supply chain/engineering issue is resolved.

My problems aren't as severe as others appear to be, although I will soon be changing out my plugs, probably to an NGK dual fine element iridium type and gapping them somewhere around .034"

The eventual permanent fix for this from Ford may be a change to the plug specs, an upgrade to the ignition coils, or both. If you have some time and money to throw around, maybe someone could experiment with these changes and report back!

Originally Posted by maplelakeduckslayer

You mean its not the fuel?

Originally Posted by Ford850

I tend to agree. I've read that the F-150's ignition system is fair at best. Many people with the 'fall on it's face' or shudder issues had a coil replaced which fixed their problem. Some have had bad plugs replaced which fixed their problem. And now many are reporting that plug gap adjustments are resolving their problems. While condensation is definitely contributing to some of the issues, I think it is exposing the weak ignition system. That explains why some people in the same area driving at the same time don't have any issues while their neighbor does. Maybe that neighbor has a borderline coil and a variety of plug gaps so the moisture added to those issues = 3 strikes.
If Ford is indeed redesigning the IC, that will eliminate one of the causes. It will then be easier to isolate the remaining weaknesses if needed.
This also explains why 20% of the posts in the shudder data base thread are from engines other than the 3.5. Eliminate moisture and many of the shudder issues go away but you still have a fair or average ignition system that could cause the same symptoms, just not as likely to happen.

Originally Posted by VoiceOfReason

The ignition system is far more likely the culprit than moisture introduced anywhere in the system. You can almost submerge the intake piping in water and the engine will, although sputtering and likely close to stalling, will still manage to run. The chance of the minute amount of moisture introduced from the intercooler/turbos ALONE causing THIS severe of a problem is highly unlikely.

Originally Posted by VoiceOfReason

The crappy fuel is ADDING to the problem. The recommendation I made earlier was to help alleviate the symptoms, not eliminate the problem. Had I been running the same fuel as you, I probably would have had the same severe symptoms as you.

Geez man, are you more interested in fixing your problem or proving me wrong...

Originally Posted by maplelakeduckslayer

Proving you wrong since you came on here bashing a bunch of us in your first posts

Seriously man, relax. You came on here not believing us at all...now you have the issue and you're attitude completely changed. I hope you get yours resolved as much as I hope to get mine resolved.

Originally Posted by kds083

If its highly unlikely then why is ford focused on a new intercooler and different tube than worrying about the ignition system? I agree with the plugs being off gap causing the miss but the loss of power is caused by ingesting of to much water at one time. Call ford customer care they will tell you this straight on the phone.