Ford says the noise is..............
Member
Joined: Jan 2003
Posts: 44
Likes: 0
From: San Marcos, CA
Originally posted by goatheady
xbwfo-check all your spark plugs and make sure they are tight.
That ticking noise may be a loose plug. Keep driving it and it
could launch and destroy the head.
xbwfo-check all your spark plugs and make sure they are tight.
That ticking noise may be a loose plug. Keep driving it and it
could launch and destroy the head.
not), and pulling the passenger side valve cover. I'm really thinking it's an exhaust valve lifter gone down or a bad spring.A week ago I went out to the desert and really opened it up.
A couple of times coming out of a turn in a sand wash, nailing it I looked down and the tach was over 5300.
Could've screwed a valve spring or worn a rocker.
The good side is if I have to replace anything I'll go with better parts so I wont have to worry next time.
Member
Joined: Nov 2002
Posts: 57
Likes: 0
From: Birmingham, AL
Just think of it this way.
Piston slap is your friend.
Forged Pistons for Forced Induction.
It is impossible to set up the Lightnings forged pistons to tighter tollerances where there is no slap without it wiping out your cylinder walls or the piston itself!
The clearance is there due to the amount of expansion of the forged piston vs the the cast iron block / cylinder.
The other alternative is to limit boost to a "safe" 6-8 psi and use non forged pistons.
As far as re-sell and slap noise, just sell your car while it is warm.
PS - The blower rattle noise will also increase with miles. AARGGH
Piston slap is your friend.
Forged Pistons for Forced Induction.
It is impossible to set up the Lightnings forged pistons to tighter tollerances where there is no slap without it wiping out your cylinder walls or the piston itself!
The clearance is there due to the amount of expansion of the forged piston vs the the cast iron block / cylinder.
The other alternative is to limit boost to a "safe" 6-8 psi and use non forged pistons.
As far as re-sell and slap noise, just sell your car while it is warm.
PS - The blower rattle noise will also increase with miles. AARGGH
Senior Member
Joined: Nov 2002
Posts: 1,833
Likes: 0
From: Botswana
This thread showed up just in time for me. I noticed the diesel sound comming from mine while in a drive through yesterday. I have been all over that darned engine trying to figure it out.
Mine only has 700 miles on it and I did my first oil change yesterday just before I noticed the sound. I guess it is normal.
Rocks
Mine only has 700 miles on it and I did my first oil change yesterday just before I noticed the sound. I guess it is normal.
Rocks
Senior Member
Joined: Oct 2001
Posts: 266
Likes: 0
From: Fredericksburg, Va.
Re: Ford says the noise is..............
Originally posted by Blwnsvt01
Well this is an update on my 2001 Lightning with 2000 miles on it, I dropped it off to Walnut Creek Ford to have the Ford engineer look at it and I got a call today from Dan and he told me that the knocking sound that I'm hearing from the driver's side of the truck near the oil pan is normal and is caused from piston slap and there being a short skirt (as he put it) on the bottom half of the piston after the rings. This to me does not sound right and if it is normal then why are there not more people talking about a knocking sound with there lightning? He also stated that there was a Ford Bulletin about the piston slap which he is to give to me when i pick the truck up.
Just wanted to know from you guys if this sounds normal and if the short skirt is correct from people that have taken the pistons out of the truck?
Thanks
Blwnsvt01
Well this is an update on my 2001 Lightning with 2000 miles on it, I dropped it off to Walnut Creek Ford to have the Ford engineer look at it and I got a call today from Dan and he told me that the knocking sound that I'm hearing from the driver's side of the truck near the oil pan is normal and is caused from piston slap and there being a short skirt (as he put it) on the bottom half of the piston after the rings. This to me does not sound right and if it is normal then why are there not more people talking about a knocking sound with there lightning? He also stated that there was a Ford Bulletin about the piston slap which he is to give to me when i pick the truck up.
Just wanted to know from you guys if this sounds normal and if the short skirt is correct from people that have taken the pistons out of the truck?
Thanks
Blwnsvt01
It's piston slap alright, but it's not normal. The only thing normal is Ford side stepping the issue and not wanting fix it. Anyone with any clue at all knows that piston slap is not normal.
