Please help! Help timing a 5.4 3 valve!!!
#17
08-06-2018, 06:04 PM
#18
05-25-2021, 08:22 PM
Same issue
I'm having the same issue I've replaced all timing components twice. And it ran great for like an hr the 1st time then lost power and started knocking replaced timing again after finding a broken pin in the phaser and again it ran great this time for about 30 mins or so then same thing. It'll crank but won't start. Everyone I've asked is stumped. Has anyone else had this issue and was able to locate it? If so please help I can't afford another truck.
#19
08-27-2021, 09:20 PM
04-08, 5.4,3 valve timing.
The stock 5.4 3V is a non-interference motor so you can't bend a valve by having it out of time.
As far as timing it goes it's pretty easy. Get it to TDC on the crank. There are timing marks on the crank sprocket and on the phasers and also a dark link on each timing chain. If you install the chains with all the marks aligned with the dark links you got it. It's that simple. The chiltons or haynes also has a reasonable diagram in it as well if you feel the need to have a picture. There will be some pressure on the cams from the valve springs. I used a pair of vice grips behind the phasers to turn the cam to align with the chain mark with the cam sprocket mark. You will want to install the tensioners and guides prior to putting the chains on but don't remove the retainer clips on tensioners until you have the timing marks all aligned for the crank, cams, and chains.
As far as timing it goes it's pretty easy. Get it to TDC on the crank. There are timing marks on the crank sprocket and on the phasers and also a dark link on each timing chain. If you install the chains with all the marks aligned with the dark links you got it. It's that simple. The chiltons or haynes also has a reasonable diagram in it as well if you feel the need to have a picture. There will be some pressure on the cams from the valve springs. I used a pair of vice grips behind the phasers to turn the cam to align with the chain mark with the cam sprocket mark. You will want to install the tensioners and guides prior to putting the chains on but don't remove the retainer clips on tensioners until you have the timing marks all aligned for the crank, cams, and chains.
#20
08-27-2021, 09:54 PM
Senior Member
04-08...[ Wouldnt it be timed correctly as long as the timing marks on the chains and on the crank are lined up with the correct placement on each phaser no matter if its at Top dead center? Does the crank really have to be at TDC in order to place the chains ack on is what I'm asking? I'm doing my 5.4,3 valve right now, I'm behind on getting it back together due to weather as I don't have a shop to do it in I'm at the mercy of mother nature. Got the two oil strainer bolts out yesterday before the latest storm hit, stormed most all day today so no go! Had a broken phaser spring on right side, both guides broken.im just curious about this timing deal, I have the timing tool I'm just curious.