Engine noise on start up
- Thread starter Poem 58
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Scallywag
Well-Known LVC Member
Is the rattle coming from the engine? It might be the timing chain rattle.
I'm not well versed on the timing chain, but a while back I read something about our engines that explained how the timing chain, or the guides, or something in-between, that was/is prone to losing tension which results in the chain briefly slapping against the guide, or something like that.
Of course, I can't find that article now which also explained the fix. A fellow member also asked about the rattle because he heard it on his Mark as well but it seems like his inquiry went somewhat unanswered.
If this is indeed what your rattle is, well, at the very least he eludes to it being harmless.
Other rattles could be:
-catalytic converter vibrating,
-torque converter,
-PCV Valve etc,
I'm not well versed on the timing chain, but a while back I read something about our engines that explained how the timing chain, or the guides, or something in-between, that was/is prone to losing tension which results in the chain briefly slapping against the guide, or something like that.
Of course, I can't find that article now which also explained the fix. A fellow member also asked about the rattle because he heard it on his Mark as well but it seems like his inquiry went somewhat unanswered.
Sajeev said:
If this is indeed what your rattle is, well, at the very least he eludes to it being harmless.
Other rattles could be:
-catalytic converter vibrating,
-torque converter,
-PCV Valve etc,
mikemark8
Well-Known LVC Member
Your oil filter should have an anti-drain back valve buy a good filter and see if that doesn't fix it.
Right on the Mark
Dedicated LVC Member
A lot of mk8's do this. When engine is doing this you have zero oil pressure. As soon as oil pump starts pumping the timing chain tensioner pumps up. I did a oil pressure gauge test on this and that's how I found info. Don't worry about it.
germansheperd
Active LVC Member
Ive heard prople say its common but ive never expirenced it with a 2,3,or 4V. I have a ‘97 Mark VIII with 37k mi. that I let sit for months at a time and then fire it and its as quiet as my 2018 Taurus.
First thing I’d recommend is do a fresh oil change with 6.5 qts of Mobil 1 5w30 and a new Motorcraft FL820S oil filter and report back.
First thing I’d recommend is do a fresh oil change with 6.5 qts of Mobil 1 5w30 and a new Motorcraft FL820S oil filter and report back.
Right on the Mark
Dedicated LVC Member
Both my m8's do it and also the mk8 engine we put in my buddies cobra. All have like 100K on them. No oil or filter will change it.
chris2523
93 Mark VIII
its very common. i tried all the filters and oils and no change.
if its only a few seconds of rattle, just go about your day.
if its only a few seconds of rattle, just go about your day.