cosway

went for a long drive today on the highway. got up to 22mpg but trucks runs like **** at 1900 RPM (and at WOT) just like before the plugs were replaced last week.


for sure its a missfire. 99% sure anyway

Martian

Dang... I'm only getting 13.5 at best...

joe mcmillan

Dang, 22 mpg with a 5.4 F150 is a pipe dream!
Someone needs a reality check and or share some of that "good stuff" with the rest of us.

uzikaduzi

I got 16.5 once while my wife was driving @55 for a full tank (which happned to be all she contributed to the 25 hours of driving) on a 1600 mile trip to NY

JHan90F150

Haha I got 19.xx for a short while then the aggressive driver kicked in. Dropped to 16.5

cosway

Well don't really know what exactly I was getting for that hour but the readout claimed 22 LOL maybe it's busted too

uzikaduzi

ahh... didn't realize you were going by the read out... those can be inaccurate but I think it's possible you got that for a brief time. I don't have one on my truck but i've had cars with it... if you hand calculate, you'll get a different number

cosway

added some accel coils now back to burning rubber.

joe mcmillan

Good deal and congrats.
You buy them from Amazon for $167??
Numerous posts on here about the Accels not being any good. Numerous others about them being great.
Let us know how they work out for you.

cosway

Will do.
I have 2 road trips in May.
8 hours and 12 hours.
I'll report back.