Ticking / Knocking Sound...
Thread Starter
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Senior Member
Joined: Jul 1999
Posts: 2,233
Likes: 0
From: KC, MO
Ticking / Knocking Sound...
I have 900 miles on my truck, and from the begenning, the engine has made a noticable ticking / knocking sound, and does so ALL the time, speratically. It's not the A/C, or anything like that. (I don't run the A/C usually.) Does it sound like "pinging" to you? Not piston slap is it? What should I do? Is it normal? My 99' 4.2 didn't make this noise. TIA
-AR
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- 2001 F-150 XLT 4X4 Off-Road, S/C, FS, Black
- 4.6L Triton V8 (20 H.P. Increase)
- 5 Speed / 3:55 Reg. Axle
- Keyless
- Premium Audio CD
- Mods.
- K&N Cold Air mod.
- Flowmaster 40 (Stock Setup with 3 1/2" Gibson Tip)
- Bugshield
- Bedliner
- Ventshades
-AR
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- 2001 F-150 XLT 4X4 Off-Road, S/C, FS, Black
- 4.6L Triton V8 (20 H.P. Increase)
- 5 Speed / 3:55 Reg. Axle
- Keyless
- Premium Audio CD
- Mods.
- K&N Cold Air mod.
- Flowmaster 40 (Stock Setup with 3 1/2" Gibson Tip)
- Bugshield
- Bedliner
- Ventshades
Member
Joined: Aug 2000
Posts: 68
Likes: 0
From: MS
I would bring it by a ford dealership and let them have a listen. But they have a way of saying everything is "normal" even when its not...
FYI
My 99 5.4L has always had a slight ticking sound from the engine, loudest on the passenger side. After reading some of the post on this sight, it sounds like your injectors ticking. From what i've read, piston slap is only at startup.(depends who you ask)
Keep us informed...
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1999 F-150 XLT SuperCab 2WD, Gold/Tan, 5.4L
MFG date 5/99
Mobile1/802s
FYI
My 99 5.4L has always had a slight ticking sound from the engine, loudest on the passenger side. After reading some of the post on this sight, it sounds like your injectors ticking. From what i've read, piston slap is only at startup.(depends who you ask)
Keep us informed...
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1999 F-150 XLT SuperCab 2WD, Gold/Tan, 5.4L
MFG date 5/99
Mobile1/802s
Senior Member
Joined: Jan 2000
Posts: 118
Likes: 0
From: Little Chute, Wisconsin
You do not have piston slap. The 4.6L was not known to have the slapper problem. I've got the same engine, it is the injectors. I was wondering on this sound also until I went under the hood to have a look. While it is running, push down on the injector, the sound changes its tone. I wouldn't worry about it.
Senior Member
Joined: Aug 2000
Posts: 107
Likes: 0
From: Torrance, CA. USA
Sounds like injector chatter. Not a problem. You might try using different brands of fuel. Manufacturers of fuels that have additives to keep injectors clean help. You would be surprised how small of a spec of dirt can make a difference in a injector.
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F150IslandBoy
1997 F150 Lariat
SuperCab, Toreador Red w/ Gold, Styleside, 4.6L, A/T, A/C, 3.55 3800 Limited Slip, Class 3 Tow Package, Leather Captain Seats, Sliding Rear Window.
Modifications:
Airaid FIPK, Flowmaster Delta Flow 50 Series, Bugflector II, Viper 500ESP Alarm, Pendaliner Bedliner, Cobra Trapshooter 3 Radar Detector, CARR Tubular Nerf Bars, NFA 1400 Compact 55W=>85W Halogen O.E. Lights, Durango 255/70R16, Chrome eyelet tie downs, Smoked front lic. plate cover.
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F150IslandBoy
1997 F150 Lariat
SuperCab, Toreador Red w/ Gold, Styleside, 4.6L, A/T, A/C, 3.55 3800 Limited Slip, Class 3 Tow Package, Leather Captain Seats, Sliding Rear Window.
Modifications:
Airaid FIPK, Flowmaster Delta Flow 50 Series, Bugflector II, Viper 500ESP Alarm, Pendaliner Bedliner, Cobra Trapshooter 3 Radar Detector, CARR Tubular Nerf Bars, NFA 1400 Compact 55W=>85W Halogen O.E. Lights, Durango 255/70R16, Chrome eyelet tie downs, Smoked front lic. plate cover.
Thread Starter
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Senior Member
Joined: Jul 1999
Posts: 2,233
Likes: 0
From: KC, MO
Great...thanks guys. I noticed today, after I got home, that it was hardly noticable at all. I usually fill up with QuickTrip, but I also hit Total and Phillip's 66 occasionaly.
-AR
-AR
Senior Member
Joined: Jul 1999
Posts: 389
Likes: 0
From: Milford, OH
4.6 engines have had piston slap. Do a search you will find a topic about it. However it does not seem very widespread in the least. Not like the 5.4's.
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97 F-150 S/C 4x4 ORP XLT 4.6 K&N , Flowmaster w/dual tailpipes, Bosch+4 plugs,Ford 9mm wires,Superchip.Patriot fiberglass toneau cover, Westin chrome step bars. Rear seat lift 4".
Kenwood 4011 stereo, USAcoustics 2150 amp, Profile electronic 3 way crossover, 2 10" IDQ DVC's, and Polk Dx7 5x7/6x8 3 ways in the front doors.
FUTURE PERFORMANCE MODS:
4.10 gears, Edlebrock shocks, Magnacharger, Airaid, and slotted rotors.
OTHER FUTURE MODS:
Ram Air hood w/functional ram air, suspension lift, 17" polished wheels, 35" tires, and sunroof.
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97 F-150 S/C 4x4 ORP XLT 4.6 K&N , Flowmaster w/dual tailpipes, Bosch+4 plugs,Ford 9mm wires,Superchip.Patriot fiberglass toneau cover, Westin chrome step bars. Rear seat lift 4".
Kenwood 4011 stereo, USAcoustics 2150 amp, Profile electronic 3 way crossover, 2 10" IDQ DVC's, and Polk Dx7 5x7/6x8 3 ways in the front doors.
FUTURE PERFORMANCE MODS:
4.10 gears, Edlebrock shocks, Magnacharger, Airaid, and slotted rotors.
OTHER FUTURE MODS:
Ram Air hood w/functional ram air, suspension lift, 17" polished wheels, 35" tires, and sunroof.
Senior Member
Joined: Feb 2000
Posts: 1,544
Likes: 0
From: Kalamazoo, MI, USA
Before clutch fans, nobody heard any noises from engines. When OEM went to plastic-tipped timing chain gears because of noise -- that was the indication that engines were really getting quiet.
They are Sooooooooo quiet now, that being able to hear an injector is absolutely phenominal!
If you hear it at an idle, it is not spark knock -- and piston slap is extremely rare.
Valve train noises are very common and can come and go even within minutes in an idling engine.
I've chased gear noises that sounded like the gearbox was beating itself to death only to find an interference that hardly made a mark.
It is amazing at how loud the most minute imperfection can be.
They are Sooooooooo quiet now, that being able to hear an injector is absolutely phenominal!
If you hear it at an idle, it is not spark knock -- and piston slap is extremely rare.
Valve train noises are very common and can come and go even within minutes in an idling engine.
I've chased gear noises that sounded like the gearbox was beating itself to death only to find an interference that hardly made a mark.
It is amazing at how loud the most minute imperfection can be.
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Senior Member
Joined: Jul 2000
Posts: 5,116
Likes: 3
From: Houston, by way of every major city in America.
it is amazing to be able to hear an injector
Now,if I could only not hear the fan in first
gear.lol
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98 F-150 4.6 Litre XLT2wd Ext. cab
prarie tan/tan int.
K/N gen.II fipk
custom dual exh/gibson rectangle tips/rear exiting.
color matched snuglid
Superchip!!!
Westin nerfs blk .powdercoat
Clear front corners
Cobra 75WXST cb w/weather alert
Kenwood cd w/Radio Shack speakers,don't laugh it sounds pretty good
On the way/wheels,tires,air dam, etc..etc.......
doin the monochromatic boogie
on the front end.Billet grilles on order
Hoping for deliverance from door crack hell.
Now,if I could only not hear the fan in first
gear.lol
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98 F-150 4.6 Litre XLT2wd Ext. cab
prarie tan/tan int.
K/N gen.II fipk
custom dual exh/gibson rectangle tips/rear exiting.
color matched snuglid
Superchip!!!
Westin nerfs blk .powdercoat
Clear front corners
Cobra 75WXST cb w/weather alert
Kenwood cd w/Radio Shack speakers,don't laugh it sounds pretty good
On the way/wheels,tires,air dam, etc..etc.......
doin the monochromatic boogie
on the front end.Billet grilles on order
Hoping for deliverance from door crack hell.