Engine Knocking

MikeD · 07-30-2002, 07:53 AM

I have a knocking sound coming from the top front part of my engine. It's hard to tell but it seems to be coming from around where the cam gears would be. It gets ALOT louder as the rpm's go up.
Are Timing chain tensioner or guide failures common on this engine? The engine only has 24000 miles on it.

thanks

**cobrabitn** · 07-30-2002, 09:56 AM

Sounds like a tensioner to me. Can you tell if the chain slaps the covers or not?

MikeD · 07-30-2002, 11:42 AM

Well, when I looked at it this morning it seems to be coming from the belt tensioner not the chain tensioner.
What could be causing a rattling or knocking sound in the belt tensioner?

**cobrabitn** · 07-30-2002, 01:11 PM

Bad spring, bad pulley. Do you have underdrives and are they torqued down? If so, check them and see if they came loose. You don't want to see a pulley flying off the crank,.....ughh!

MikeD · 07-30-2002, 05:28 PM

No underdrives. I'm going to pull the tensioner off tonight and give it the once over. I'll let you know what I find. Thanks for the help Tony.

**cobrabitn** · 07-30-2002, 06:15 PM

Okay! Let me know when you find out so I can beware on my 99.

MikeD · 08-07-2002, 09:41 AM

After replacing the Bearings on the tensioner and the idler pulleys the noise was still there.
I went ahead and bought the tensioner. $70 even with my 25% discount. Problem solved. It turned out to be the shaft that the tensioner bearing goes on was worn.

**cobrabitn** · 08-07-2002, 09:54 AM

Cool.... where did you get the 25% discount from?? McCarville Ford?

MikeD · 08-08-2002, 09:00 PM

I got the discount through my job. Our fleet mechanic deals with a local Ford parts distribution center.

07-30-2002, 07:53 AM	#1
MikeD Registered User Join Date: Oct 2001 Location: ATL,GA Posts: 17	Engine Knocking I have a knocking sound coming from the top front part of my engine. It's hard to tell but it seems to be coming from around where the cam gears would be. It gets ALOT louder as the rpm's go up. Are Timing chain tensioner or guide failures common on this engine? The engine only has 24000 miles on it. thanks __________________ Mike DeLoach Blk 99 Coupe

07-30-2002, 09:56 AM	#2
cobrabitn Dr Jekyll on the street, Mr Hyde on the track Join Date: Jun 2001 Location: Rock Hill SC Posts: 14,649	Sounds like a tensioner to me. Can you tell if the chain slaps the covers or not? __________________ Cobrabitn 2016 Ruby Red Metallic with Caribou accent F-350 Crew Cab Stump Puller! 6.7 Diesel Automatic with Chrome Package, Off Road Package, 3.55 Locking axles, and Ultimate Lariat Interior Trim Package! 2017 Shelby GT350 Coupe - track car! Mods: JLT True Cold Air oil catch can 2009 Vista Blue Shelby GT 500 Coupe - Garage Queen Tinted Windows JLT True Cold Air Kit Pro-Dyno Tune 526 rwhp - 511 rwtq 1994 Rio Red Indy Pace Car #22 "Runabout" Snake in the grill MGW shift knob 1996 SVT Cobra Wheels 1969 New Lime Mustang Mach 1 Sportsroof - Second owner - bone stock with shaker. One SVT Cobra, one Shelby GT500, one 69 mach 1, and a Shelby GT350 is better than nothing! Custom Data Plates for your Mustang or Ford! Buy "Cool Merchandise" at Data Plates Plus www.dataplatesplus.com See my MSR Video here!

07-30-2002, 11:42 AM	#3
MikeD Registered User Join Date: Oct 2001 Location: ATL,GA Posts: 17	Well, when I looked at it this morning it seems to be coming from the belt tensioner not the chain tensioner. What could be causing a rattling or knocking sound in the belt tensioner? __________________ Mike DeLoach Blk 99 Coupe

07-30-2002, 01:11 PM	#4
cobrabitn Dr Jekyll on the street, Mr Hyde on the track Join Date: Jun 2001 Location: Rock Hill SC Posts: 14,649	Bad spring, bad pulley. Do you have underdrives and are they torqued down? If so, check them and see if they came loose. You don't want to see a pulley flying off the crank,.....ughh! __________________ Cobrabitn 2016 Ruby Red Metallic with Caribou accent F-350 Crew Cab Stump Puller! 6.7 Diesel Automatic with Chrome Package, Off Road Package, 3.55 Locking axles, and Ultimate Lariat Interior Trim Package! 2017 Shelby GT350 Coupe - track car! Mods: JLT True Cold Air oil catch can 2009 Vista Blue Shelby GT 500 Coupe - Garage Queen Tinted Windows JLT True Cold Air Kit Pro-Dyno Tune 526 rwhp - 511 rwtq 1994 Rio Red Indy Pace Car #22 "Runabout" Snake in the grill MGW shift knob 1996 SVT Cobra Wheels 1969 New Lime Mustang Mach 1 Sportsroof - Second owner - bone stock with shaker. One SVT Cobra, one Shelby GT500, one 69 mach 1, and a Shelby GT350 is better than nothing! Custom Data Plates for your Mustang or Ford! Buy "Cool Merchandise" at Data Plates Plus www.dataplatesplus.com See my MSR Video here!

07-30-2002, 05:28 PM	#5
MikeD Registered User Join Date: Oct 2001 Location: ATL,GA Posts: 17	No underdrives. I'm going to pull the tensioner off tonight and give it the once over. I'll let you know what I find. Thanks for the help Tony. __________________ Mike DeLoach Blk 99 Coupe

07-30-2002, 06:15 PM	#6
cobrabitn Dr Jekyll on the street, Mr Hyde on the track Join Date: Jun 2001 Location: Rock Hill SC Posts: 14,649	Okay! Let me know when you find out so I can beware on my 99. __________________ Cobrabitn 2016 Ruby Red Metallic with Caribou accent F-350 Crew Cab Stump Puller! 6.7 Diesel Automatic with Chrome Package, Off Road Package, 3.55 Locking axles, and Ultimate Lariat Interior Trim Package! 2017 Shelby GT350 Coupe - track car! Mods: JLT True Cold Air oil catch can 2009 Vista Blue Shelby GT 500 Coupe - Garage Queen Tinted Windows JLT True Cold Air Kit Pro-Dyno Tune 526 rwhp - 511 rwtq 1994 Rio Red Indy Pace Car #22 "Runabout" Snake in the grill MGW shift knob 1996 SVT Cobra Wheels 1969 New Lime Mustang Mach 1 Sportsroof - Second owner - bone stock with shaker. One SVT Cobra, one Shelby GT500, one 69 mach 1, and a Shelby GT350 is better than nothing! Custom Data Plates for your Mustang or Ford! Buy "Cool Merchandise" at Data Plates Plus www.dataplatesplus.com See my MSR Video here!

08-07-2002, 09:41 AM	#7
MikeD Registered User Join Date: Oct 2001 Location: ATL,GA Posts: 17	After replacing the Bearings on the tensioner and the idler pulleys the noise was still there. I went ahead and bought the tensioner. $70 even with my 25% discount. Problem solved. It turned out to be the shaft that the tensioner bearing goes on was worn. __________________ Mike DeLoach Blk 99 Coupe

08-07-2002, 09:54 AM	#8
cobrabitn Dr Jekyll on the street, Mr Hyde on the track Join Date: Jun 2001 Location: Rock Hill SC Posts: 14,649	Cool.... where did you get the 25% discount from?? McCarville Ford? __________________ Cobrabitn 2016 Ruby Red Metallic with Caribou accent F-350 Crew Cab Stump Puller! 6.7 Diesel Automatic with Chrome Package, Off Road Package, 3.55 Locking axles, and Ultimate Lariat Interior Trim Package! 2017 Shelby GT350 Coupe - track car! Mods: JLT True Cold Air oil catch can 2009 Vista Blue Shelby GT 500 Coupe - Garage Queen Tinted Windows JLT True Cold Air Kit Pro-Dyno Tune 526 rwhp - 511 rwtq 1994 Rio Red Indy Pace Car #22 "Runabout" Snake in the grill MGW shift knob 1996 SVT Cobra Wheels 1969 New Lime Mustang Mach 1 Sportsroof - Second owner - bone stock with shaker. One SVT Cobra, one Shelby GT500, one 69 mach 1, and a Shelby GT350 is better than nothing! Custom Data Plates for your Mustang or Ford! Buy "Cool Merchandise" at Data Plates Plus www.dataplatesplus.com See my MSR Video here!

08-08-2002, 09:00 PM	#9
MikeD Registered User Join Date: Oct 2001 Location: ATL,GA Posts: 17	I got the discount through my job. Our fleet mechanic deals with a local Ford parts distribution center. __________________ Mike DeLoach Blk 99 Coupe

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)