Hey fellas,

Well last week i noticed;to say the least, my engine knocking right after start up. It will only knock when the engine is warm and for approximately 15 seconds. It is most noticeable after I back out of the driveway, put the truck in drive, and leave. The knock does go away shortly after i begin driving. If the engine is cold it wont knock, only when it is warm and has set for a while. It is not an exhaust leak, I have a few of those already. It is not a ticking sound like it would normally do in the morning. It is a louder knock. The truck uses about a quart of oil every 1500 miles but that can probably be expected with as many miles as i have. Any ways, any info as the what the knock may be would be appreciated..
Brett

2000 F150, 230,000miles, 5.4, 4r70w, 3.55ls, fipk, hi flow cats, magnaflow
Original engine & trans

 

my 98 4.6 was knocking at 136,000. i put new rod bearings in it. no more knock.

 

What are you using for oil and oil filter?

 

Pennzoil and fram filter... Sometimes quakerstate though with the same results

 

Use the Advanced Search feature and enter Fram filter.

 

What oil viscosity?

 

If you've been using a Fram filter, the damage may already be done. Change your oil and filter, use Motorcraft 5W20 and a Motorcraft filter (BOTH available at Walmart CHEAP) and see if it helps.

 

5w/30 in the winter 10w/30 in the summer

 

Your alright with the 5w/30 but I would not run 10w/30 at all.

These engines don't like too many aftermarket oil filters either and Fram is supposed to be the worst of them all if you believe what you read here. I stay away from them now. I had an aftermarket filter on mine when I bought it and it had a slight knock at start up. I put a motorcraft on the next oil change and the knock went away but like glc said the damage may be done.

 

The best thing is to try and locate the noise. Front cover area, cam cover, oil pan area, etc. Might be tough if it only does it when you start to drive but it would really help here if we had a location. Use an inexpensive mechanics stethescope if at all possible. Take care.

 

I just reread your post and I swear you said the noise lasted for 115 seconds, now it says 15 seconds(typo?). Fifteen sec's doesn't give you much time to listen but you still may be able to get us close to the area. front, back, top, bottom, etc.

 

Sounds like cam phasers. Thats what mine did.

 

It's a 2000 model, no cam phasers.

 

I had done a search and heard allot about cam phasers, but none of those trucks were pre 2004. Thats why im stumped. If it turns out to be an expensive repair im considering just putting in a reman engine. But well see what happens. I like my truck too much to trade it in. Besides something comparable would run around 40 grand. Thanks everyone.

 

GUYS I JUST HAD TO REPLACE MY CAM PHASERS AND A FEW OTHER THINGS DURING THE PROCESS BUT WHAT I DONT GET IS THAT EVERY PERSON WHO HAS HAD CAM PHASER PROBLEMS WITH THE TRUCK HAS HAD AT LEAST 60000 MILES ON THERE VEHICLE MINE HAS 23481 I CANT BELIEVE THAT THESE WOULD GO OUT SO SOON, BY THE WAY IT COST ME NOTHING TO REPLACE EVERYTHING BUT TO MY AFTERMARKET WARRANTY IT COST AROUND 2000 BUCKS. I KNOW ALOT OF OTHER PEOPLE HAVE BEEN HAVING THE SAME PROBLEM WITH THERES JUST WANTED TO SHARE WHAT I HAVE HAD TO GO THROUGH, THANKS! BY THE WAY SHE IS STILL IN THE SHOP WHICH REALLY SUCKS! BUT I GET HER OUT TODAY!!