I have a quick question. I put 1 can of sea foam in my fuel tank when I had a full tank. about a 1/4 tank was gone, I had to have some engine work done, replaced both heads. While the mechanic had it, he put 3/4 of a can of sea foam in the tank. Now it is running very rough, and I have a misfire on cyl 6 and it is almost stalling at idle. We think there is too much sea foam in the fuel. Would you guys agree?

When I am on the HWY it runs fine.

Oh, it is a 2000, Expedition, 4.6 liter.

Thanks for any info.

John

 

i wouldn't bet on it being the seafoam.

if you let out too loud of a fart the coils will misfire.

if you hvnt done so in the last 60 000m i would set aside some money to replace a few coil packs