GEN 2 Loss of power, under heavy accelerating

Good Copy...

headed home now to let the truck cool for an hour or two

Ok... So...

The original spark plugs were at between .032-.033 all six. Cylinder one was the oiliest and it progressively got less oily and more "used" looking as the cylinder numbers went up.

Photos here show Cylinder one bottom right and Cylinder 6 top left; the close up is Cyl 1, notice the oil.

New plugs are gapped and installed at .028. Lets see if I get a check engine light tomorrow at WOT. Driving around feels great, no tremble thus far at idle, but its not super warm yet.


Eye candy first.... Kure Beach, NC.

Untitled by D J, on Flickr

Untitled by D J, on Flickr

Untitled by D J, on Flickr

Do you have the updated valve covers? If not it’s potential sucking oil vapor into the intake and getting pre-ignition.

These truck lose oil when you run them hard! And I don't even really run mine hard lol. Check it regularly. Mine was doing the same thing and mine is stock. The manual is completely wrong on oil change intervals I take mine in every 3to5k since apparently the oil evaporates so quickly.

OPT PRIME said:

Do you have the updated valve covers? If not it’s potential sucking oil vapor into the intake and getting pre-ignition.

Click to expand...

What updated valve covers....

Part number please?

If this doesnt fix me right up, I'll take the tune off, unplug the truck for 24hours and drain the system so its clean when I take it to FORD for a diagnostic review.

Don

So 24hrs check in...

Truck feels strong as ever, no more trembling. No CEL as of yet. I have went to 6k RPM 3-4 times at WOT. Perhaps it was spark plugs and their gap.

It Was , i change plugs every 10,000 miles on my boost . I lose about 6-7 thousands gap by then . Cheap insurance and fairly easy job.

How is it possible to lose that much of a gap?