01 F-150 5.4: what is this noise? (video)

[Turbo302]

Change your PCV valve. I bet thats whats buzzing. Ive seen it a few times.

Tim

[LongAndLow]

your dumps are causing your fuel to boil... thats what boiling fuel sounds like... herd it a thousand times.

[RyanM]

Change your PCV valve. I bet thats whats buzzing. Ive seen it a few times.

Tim

seen it many times on them

[Stormwalker]

I moved the truck this morning, and it really does idle very rough while in gear. So I guess it doesn't seem like accessory stuff after all. I'll probably get a PCV valve for it today and see if that does the trick. Probably needs to be replaced anyways. The truck has over 145k on it, and has only had fluid changes.

[iamtheshaner]

Remove your oil fill cap and see if that changes the noise. If the vacuum on the PCV valve is causing it to buzz like that opening an alternative path for air flow should affect the noise.

[HELLFYR]

Remove your oil fill cap and see if that changes the noise. If the vacuum on the PCV valve is causing it to buzz like that opening an alternative path for air flow should affect the noise.

Or just yank the PCV temporarily to see if it goes away

[MisterCMK]

Your dumps are boiling your fuel... thats what boiling fuel sounds like. herd it a thousand times.

Wow, can you think of anything else that hasn't been posted 8 million times?

[Fernanernie]

Change your PCV valve. I bet thats whats buzzing. Ive seen it a few times.

Tim

Thirded

[RyanM]

Wow, can you think of anything else that hasn't been posted 8 million times?

[KickAssFlash]

I'm going to replace the valve tomorrow. We'll see what happens.

[KickAssFlash]

Well, I replaced the valve and the noise went away. However, it still has a misfire and shakes pretty bad when accelerating. Could excess oil in the intake manifold from the bad PCV have fouled the plugs? I actually think they are the original spark plugs...150,000 miles on those bad boys.

[slownotch]

You could try spraying some starting fluid around your intake if you still suspect cracked intake, if engine revs, you have a crack

[RyanM]

Well, I replaced the valve and the noise went away. However, it still has a misfire and shakes pretty bad when accelerating. Could excess oil in the intake manifold from the bad PCV have fouled the plugs? I actually think they are the original spark plugs...150,000 miles on those bad boys.

You answered your own question dog, 150,000 miles on plugs, what the fuck is wrong with you, shit dont last forever

[SlippinJoe]

would a bad PCV valve be causing a whine under HEAVY accelaration? My car makes a high pitch noise only under heavy accelaration not at idle.


That panda picture is Awesome! That needs to be in the lawlz thread!

[KickAssFlash]

The #8 coil was bad. Buffalo Ford replaced it...and said the spark plugs are still good to go. 150,000 miles and counting, bitches!