Random timing chain noise???
Thread Starter
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Posting Guru
Joined: Apr 2003
Posts: 1,153
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From: Venezuela
Random timing chain noise???
Hi there, we got recently a F150, 2007, 4 doors, fx4, It has a 5.4l and 70k miles.
This week I notice some noise like tipical timing chain noise between 900 and 1000 RPM, but this noise is random, sometimes appears while engine is cold, sometimes while hot, last weekend I drove 1.200 miles and no noise but this morning went to bakery and noise present
It is using 10W30 and motorcraft filter and I'm wondering...
1. maybe it is having low oil pressure problems?
2. is there any plug on engine block to install an oil pressure gauge?
3. What should be the normal readings idling hot and 2000 rpm hot?
Thanks in advanced for your help
Note: Previous owner said he recently installed new tensioners and 2 chain rail
This week I notice some noise like tipical timing chain noise between 900 and 1000 RPM, but this noise is random, sometimes appears while engine is cold, sometimes while hot, last weekend I drove 1.200 miles and no noise but this morning went to bakery and noise present
It is using 10W30 and motorcraft filter and I'm wondering...
1. maybe it is having low oil pressure problems?
2. is there any plug on engine block to install an oil pressure gauge?
3. What should be the normal readings idling hot and 2000 rpm hot?
Thanks in advanced for your help
Note: Previous owner said he recently installed new tensioners and 2 chain rail
Fleet Mechanic
Joined: Aug 2008
Posts: 1,446
Likes: 9
From: NE Iowa JD Country
Hi there, we got recently a F150, 2007, 4 doors, fx4, It has a 5.4l and 70k miles.
This week I notice some noise like tipical timing chain noise between 900 and 1000 RPM, but this noise is random,
It is using 10W30 and motorcraft filter and I'm wondering...
1. maybe it is having low oil pressure problems?
Note: Previous owner said he recently installed new tensioners and 2 chain rail
This week I notice some noise like tipical timing chain noise between 900 and 1000 RPM, but this noise is random,
It is using 10W30 and motorcraft filter and I'm wondering...
1. maybe it is having low oil pressure problems?
Note: Previous owner said he recently installed new tensioners and 2 chain rail
Was the timing chains replaced as well? What about the phasers, were they changed too? Shucks what about the oil pump, was it changed?? If so, did they put the upgraded oil pump in with a stiffer backing plate?
Thread Starter
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Posting Guru
Joined: Apr 2003
Posts: 1,153
Likes: 1
From: Venezuela
Ok 5W20 on the truck and was on road for 1K miles. Now the ticking noise is continuous while hot idling and the rattling noise is always around 900 rpm. At normal driving RPM no noise is present.
It seems to me I have to read hot oil engine pressure ???
Note: when used oil was removed I notice some metallic color on oil, like steel dust, not big like sand particles or metal shaves
It seems to me I have to read hot oil engine pressure ???
Note: when used oil was removed I notice some metallic color on oil, like steel dust, not big like sand particles or metal shaves
Thread Starter
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Posting Guru
Joined: Apr 2003
Posts: 1,153
Likes: 1
From: Venezuela
Well can you quiz the former owner as to what brand was put in for the tensioners and chain rail/guides? Was the original chain guides/rail broken up?? Did they drop the pan and make sure there was no debris in the pick-up screen of the oil pump?
Was the timing chains replaced as well? What about the phasers, were they changed too? Shucks what about the oil pump, was it changed?? If so, did they put the upgraded oil pump in with a stiffer backing plate?
Was the timing chains replaced as well? What about the phasers, were they changed too? Shucks what about the oil pump, was it changed?? If so, did they put the upgraded oil pump in with a stiffer backing plate?
I assume, had to check oil pressure first before disassembly anything.
What should be the minimum oil pressure at hot idling? at 2000 RPM???
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Hotshot
Joined: Dec 2012
Posts: 11,278
Likes: 1,658
From: Las Cruces New Mexico
It all points to a bad timing chain tensioner, the seal gets compromised, causing low oil pressure on the top end, replace asap with the updated tensioner.
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Fleet Mechanic
Joined: Aug 2008
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From: NE Iowa JD Country
not sure of the spec on oil pressure at 2000 RPM...but should be over 30 psi maybe closer to 50
Fleet Mechanic
Joined: Aug 2008
Posts: 1,446
Likes: 9
From: NE Iowa JD Country
If things don't got well it can cost more than just some components. pretty sure there is some videos on YouTube....check them out and see if your up for it.
Thread Starter
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Posting Guru
Joined: Apr 2003
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From: Venezuela
Ok guys some more Update...
Today I do an oil pressure test and found this readings:
Cold:
Idle 50 psi << No noise
1K RPM 65 psi << No noise
2K RPM 70 psi << No noise
Hot:
Idle 28 psi <<No noise
1K RPM 40 psi <<Very noisy timing chain
2K RPM 50 psi <<No noise
All those readings using Motorcraft 5W20. It seems to me pressure is enough to hold tensioners and chain in place, isn't it?
Tomorrow I´ll do a quick test using 15W40 and then will see...
Today I do an oil pressure test and found this readings:
Cold:
Idle 50 psi << No noise
1K RPM 65 psi << No noise
2K RPM 70 psi << No noise
Hot:
Idle 28 psi <<No noise
1K RPM 40 psi <<Very noisy timing chain
2K RPM 50 psi <<No noise
All those readings using Motorcraft 5W20. It seems to me pressure is enough to hold tensioners and chain in place, isn't it?
Tomorrow I´ll do a quick test using 15W40 and then will see...
Thread Starter
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Posting Guru
Joined: Apr 2003
Posts: 1,153
Likes: 1
From: Venezuela
Everything points to best option get a new full timing kit... I have read something about a improved VCT, oil pump, anything else??? I have read also about a improved melling oil pump???? In your opinion will be better original for Kit? or any aftermarket brand??
Any comment will be appreciated. Thanks !
Any comment will be appreciated. Thanks !