Another Ticking Question
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Another Ticking Question
A new guy to the site.
I have a 2001 Super Duty V10 with 78,000 miles. I just rebuilt it with new main and rod bearings, seals, oil pump and lash adjusters. It is still ticking. I tightened the plugs so now it is quiet for the first 30 seconds then starts. Would checking the plugs hot be suggested?
I also installed headers with stock exhaust.
I have good oil pressure (checked with a dial gage in the sender port) 75 lbs so that is not the issue.
I have a 2001 Super Duty V10 with 78,000 miles. I just rebuilt it with new main and rod bearings, seals, oil pump and lash adjusters. It is still ticking. I tightened the plugs so now it is quiet for the first 30 seconds then starts. Would checking the plugs hot be suggested?
I also installed headers with stock exhaust.
I have good oil pressure (checked with a dial gage in the sender port) 75 lbs so that is not the issue.
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After I did the rebuild, it was still ticking when I started it. I was going through the usual checks when I discovered a loose spark plug. I tightened it and checked the rest and found others were loose. I tightened them and started the engine. It was quiet for the first few moments and then the ticking started again. As it is now, it's quiet when I first start it then after a few moments, the noise starts.
I have checked for exhaust leaks and found none.
BTW, I went to headers after I found the second set of broken studs.
OK... I just got back in from trying that and found no loose spark plugs. I also checked the injectors and they are normal.
I have checked for exhaust leaks and found none.
BTW, I went to headers after I found the second set of broken studs.
OK... I just got back in from trying that and found no loose spark plugs. I also checked the injectors and they are normal.
Last edited by nootcheez; Apr 2, 2007 at 10:28 AM. Reason: Additional Information
Post Fiend
Joined: Jun 2003
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From: NE Texas
Welcome to FTE, nootcheez! 
Did you check the plug cavities, more precisely the plug threads, when you did the rebuild? Someone could have installed a helicoil.
But that's not my gut on this one. I think (1) it's the injectors. They get loud sometimes. And (2) maybe a ragged serpentine belt.
Did you check the plug cavities, more precisely the plug threads, when you did the rebuild? Someone could have installed a helicoil.
But that's not my gut on this one. I think (1) it's the injectors. They get loud sometimes. And (2) maybe a ragged serpentine belt.
Laughing Gas
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From: Denver, CO
It may be that normal V10 "piston slap". My 2000 F250 does it and my 2000 X doesnt. My F250 has always done it (well since I bought it 40,000 miles ago). It does it with Mobile1 5w-30 and MC 5w-20 and 30. It may just be normal.
Does it go away after the truck warms up? Or does it always tick?
Does it go away after the truck warms up? Or does it always tick?
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Originally Posted by MadMedic20
It may be that normal V10 "piston slap". My 2000 F250 does it and my 2000 X doesnt. My F250 has always done it (well since I bought it 40,000 miles ago). It does it with Mobile1 5w-30 and MC 5w-20 and 30. It may just be normal.
Does it go away after the truck warms up? Or does it always tick?
Does it go away after the truck warms up? Or does it always tick?
I used a stethescope on the injectors and found none outrageously loud.
I did the rebuild during the Christmas holidays. I put in Bosch Platinum spark plugs.
There are no Heli-coils in the heads.
I'm starting to angle towards piston slap. What causes it?
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Post Fiend
Joined: Jun 2003
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From: NE Texas
Piston Slap is caused by skirtless pistons and loose tolerance. "Loose Tolerance" doesn't mean that's it is "outside" the given tolerances, but that it's on the small side of the scale.
But, there is a definite difference in a tick and a slap.
But, there is a definite difference in a tick and a slap.
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Post Fiend
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From: USA
Let me ask why you did the rebuild ?
Piston slap goes silent after warm up.
What causes it ,The short skirt pistons used and the type of piston used.When cold it shriinks when hot it expands .With a short skirt and the rotation it tends to rock more in the bore till it heats up and expands.
Unless you have excessive piston to cylinder bore clearances .
Did you replace any wrist pins or chk the rods for twist or other problems.
Tell us the extent of your rebuild
You are describing a ticking noise,a type of electrical tick or a mechanical tick???
Rich
Piston slap goes silent after warm up.
What causes it ,The short skirt pistons used and the type of piston used.When cold it shriinks when hot it expands .With a short skirt and the rotation it tends to rock more in the bore till it heats up and expands.
Unless you have excessive piston to cylinder bore clearances .
Did you replace any wrist pins or chk the rods for twist or other problems.
Tell us the extent of your rebuild
You are describing a ticking noise,a type of electrical tick or a mechanical tick???
Rich
Post Fiend
Joined: Jan 2002
Posts: 5,859
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From: USA
Mr Big ,sorry I was typing as you were posting
Didn't even see your update till now ,you dirty old man!!!!
But short skirts are nice from where we sit in our trucks !
Rich
On edit :I'm going to take a guess and say this is electrical tick and its caused by the Bosch plugs.
This ignition system doesn't like anything but oem plugs.
Rich
Didn't even see your update till now ,you dirty old man!!!!
But short skirts are nice from where we sit in our trucks !
Rich
On edit :I'm going to take a guess and say this is electrical tick and its caused by the Bosch plugs.
This ignition system doesn't like anything but oem plugs.
Rich
Last edited by FortyFords; Apr 3, 2007 at 10:04 PM.
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Originally Posted by FortyFords
Let me ask why you did the rebuild ?
Piston slap goes silent after warm up.
What causes it ,The short skirt pistons used and the type of piston used.When cold it shriinks when hot it expands .With a short skirt and the rotation it tends to rock more in the bore till it heats up and expands.
Unless you have excessive piston to cylinder bore clearances .
Did you replace any wrist pins or chk the rods for twist or other problems.
Tell us the extent of your rebuild
You are describing a ticking noise,a type of electrical tick or a mechanical tick???
Rich
Piston slap goes silent after warm up.
What causes it ,The short skirt pistons used and the type of piston used.When cold it shriinks when hot it expands .With a short skirt and the rotation it tends to rock more in the bore till it heats up and expands.
Unless you have excessive piston to cylinder bore clearances .
Did you replace any wrist pins or chk the rods for twist or other problems.
Tell us the extent of your rebuild
You are describing a ticking noise,a type of electrical tick or a mechanical tick???
Rich
No work was done on the pistons or wristpins as these were OK.
After the rebuild, the pressure was very good (75 lbs at idle using a guage in the sender port).
I filled the lash adjusters with oil but did not "pump them up" as I figured that they would pump up once the engine was started.
I will admit that I have been running on the supposition that they did just that. Was I mistaken and should I have pumped them up manually. If so, it's not a problem to do. They are relatively easy to get at.
BTW.. I did run it with cam covers off and the heads are awash in oil.
Last edited by nootcheez; Apr 3, 2007 at 10:19 PM.
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From: USA
Did you chk the lobes on the cams for excessive wear also?
also if the oil pressure went away it may have wiped out the cam chain tensioners or the chain. I believe there is a plastic or nylon guide that gets worn.
Its been awhile since I had one apart.
Also there is a counter balance shaft in this motor was its bearings chkd.
have you found a area where you think the noise is coming from
Rich
also if the oil pressure went away it may have wiped out the cam chain tensioners or the chain. I believe there is a plastic or nylon guide that gets worn.
Its been awhile since I had one apart.
Also there is a counter balance shaft in this motor was its bearings chkd.
have you found a area where you think the noise is coming from
Rich