Y2K and others,

I've been following this thread as well as the piston slap threads as well. I can be quoted as saying my 2000 5.4 "knocked like a diesel". Well since that quote I have been doing my own oil changes and use a motocraft
820s filter, and my "slap" has dissappeared.
I was recently on a vacation with a friend, and a well experianced Ford mechanic. The temp was about 40F in the morning. I hoped he would be able to diagnose my awfull sounding cold startup. To my surprise it is gone. In the spring I could produce it every startup under 55F and sometimes warmer. The *ONLY* things that have changed is the filter and about 10K more miles. Obviously the sound I was hearing is not piston slap, but it sounded just like the noises posted here and other places only worse.

FWIW my friend stated probably a loose slack adjuster on one of the lifters, or the other phrase he used was "it's the thin oil used now. Everything using 5W rattles, Chevy's too"

I went to a chevy board and I'll be darned there is a thread about cold startup rattles on the 5.3.......

What do you think.....

-jeff b.

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2000 F150 4x4 SC/SB 5.4 Auto, Tow Package, ORP (with the sticker for 2000), Cab Steps, Lariet.
Oxford White/Harvest Gold 2 tone.



[This message has been edited by FarmBoy (edited 08-02-2000).]

 

I think I was the one man whistling in the wind until your post.

Thanks.

 

This is an interesting thought. Ford was the first to use the low volume low pressure oil pumps. and then 2 or 3 years later Chevy used them also. Ford was having this problem and chevy was not, until they used the low vol. low psi pumps also. A friend of mine that ownes a Ford truck tryed the 15w40 he has for his big truck and he had louder noise. I believe that it has to do with the vis of the oil and the low vol. low psi pumps and the noise is comming from the upper end not piston slap.

Sincerely, Kevin

 

We're nowhere even remotely close to a bottom line.

It won't be until we can get non-emotional responses (believe me, if I had those noises, I'd be emotional!) from those with the symptom and start a database to start looking for a pattern.

Awareness that there are possibilities is merely the start (anyone schooled in the 8-D process? -- we haven't even wrapped our arms around the definition yet).

Let's restart the thread on Piston Slap and try to close in on it.

(hmmm over the louder with 15w, however)

 

So, what's the final consensus? Is piston slap a legitimate problem? If so, was it corrected in the 2000 models? Should I switch from 5w-30? I don't have any of the symptoms, but I damn sure don't want them to start.

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2000 F-150SC 5.4L 4X4ORP
DEEP WEDGEWOOD BLUE
AUTO, 3.55LS, TOW PKG.
CAPTAIN'S CHAIRS,
REMOTE KEYLESS ENTRY
REAR SLIDER
PREMIUM SOUND w/ CD
RHINO LINER
STATE ISSUED UNIV.OF GA. PLATE.
UGA RECEIVER COVER
UGA LICENSE PLATE(FRONT)

WISH LIST:
FLOWMASTER DELTA 40
AIRAID FIPK
SUPERCHIP
TINTED WINDOWS
HOOD DEFLECTOR(PAINTED)
RAIN GUARDS(PAINTED)

A NATIONAL TITLE FOR UGA(FOOTBALL)