startup clatter.
#1
03-19-2018, 05:19 AM
startup clatter.
not sure if you folks know my “story” but I recently got a 2nd van with 4.6 and 225,000 miles. I drove it a few hundred miles at first, but since then my employee has been using it, so I’ve been out of the loop of its characteristics.
Im a V10 guy; lots of knowledge and experience there. (Almost five years and 220,000miles of direct experience). But never had a 4.6 before.
Yesterday I wanted to check fluids and stuff and when I cranked the engine it struck me kind of funny. Some noise for a few seconds upon starting. I don’t want to describe it or label it because that’s the point of me asking you. It sounded like when you start a car for the first time after it sat for a couple days. I want to say valvetrain but I actually don’t know. But The van had only been still for an hour or two.
I know nothing about the 4.6. But I’ve read on FTE about cam phasers or timing chain guides or some other oil pressure related items. I think I’ve read about these regarding the 3 valve engines though. its all very murky.
What do do you think? Or lead me the right direction please.
Im a V10 guy; lots of knowledge and experience there. (Almost five years and 220,000miles of direct experience). But never had a 4.6 before.
Yesterday I wanted to check fluids and stuff and when I cranked the engine it struck me kind of funny. Some noise for a few seconds upon starting. I don’t want to describe it or label it because that’s the point of me asking you. It sounded like when you start a car for the first time after it sat for a couple days. I want to say valvetrain but I actually don’t know. But The van had only been still for an hour or two.
I know nothing about the 4.6. But I’ve read on FTE about cam phasers or timing chain guides or some other oil pressure related items. I think I’ve read about these regarding the 3 valve engines though. its all very murky.
What do do you think? Or lead me the right direction please.
#3
03-19-2018, 10:22 AM
#5
03-19-2018, 05:23 PM
#7
03-20-2018, 04:04 AM
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#8
03-20-2018, 09:14 AM
Hotshot
It has the same timing system like your V10, so if the guides are worn down or missing pieces the chain will slap around untill the tensioner compensates for the slack, or if the timing chain tensioner is leaking or damaged, untill you reach oil pressure it will make the tensioner guides loose making the chain to slap around.
ps if the guides has missing pieces its wise to remove the oil pan to get those broken pieces out so that they wont compromise the oil pick up tube flow and giving you low oil pressure.
ps if the guides has missing pieces its wise to remove the oil pan to get those broken pieces out so that they wont compromise the oil pick up tube flow and giving you low oil pressure.
#9
03-21-2018, 04:46 AM
It has the same timing system like your V10, so if the guides are worn down or missing pieces the chain will slap around untill the tensioner compensates for the slack, or if the timing chain tensioner is leaking or damaged, untill you reach oil pressure it will make the tensioner guides loose making the chain to slap around.
ps if the guides has missing pieces its wise to remove the oil pan to get those broken pieces out so that they wont compromise the oil pick up tube flow and giving you low oil pressure.
ps if the guides has missing pieces its wise to remove the oil pan to get those broken pieces out so that they wont compromise the oil pick up tube flow and giving you low oil pressure.
and this is common?
And it matches my symptoms?
#11
03-21-2018, 07:58 PM
#12
03-21-2018, 08:12 PM
Hotshot
If you take the oil fill cap off and shine a light inside you can see if the engine got the oil change often or not, a tarnished or darken colored cam and heads is a good indication of the oil not getting changed often, a clean light brown to aluminum colored head is a good indication of the oil got changed often.
Unfortunately in order to fixing is removal of timing cover and valve covers and the replacing them timing is crucial when putting the timing chains so if you decide to fix it yourself make sute you do it right.
Unfortunately in order to fixing is removal of timing cover and valve covers and the replacing them timing is crucial when putting the timing chains so if you decide to fix it yourself make sute you do it right.
#13
03-22-2018, 04:25 AM
If you take the oil fill cap off and shine a light inside you can see if the engine got the oil change often or not, a tarnished or darken colored cam and heads is a good indication of the oil not getting changed often, a clean light brown to aluminum colored head is a good indication of the oil got changed often.
Unfortunately in order to fixing is removal of timing cover and valve covers and the replacing them timing is crucial when putting the timing chains so if you decide to fix it yourself make sute you do it right.
Unfortunately in order to fixing is removal of timing cover and valve covers and the replacing them timing is crucial when putting the timing chains so if you decide to fix it yourself make sute you do it right.
And no I wouldn’t even consider engine repairs like that. I have no experience with overhead cam engines timing chains.
Thanks for the input
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