motor knocking

87gtmustang · April 20th, 2009, 08:04 PM

my motor is knocking. it seems to be coming from the middle. what can be the cause and is it worth fixing.
my ideal is a lifter but i have also been told it could be a bent rod. if its a lifter should i just replace all or just the bad one. and how would i do this or should i have a shop do it.

1slo5.0 · April 20th, 2009, 08:26 PM

There is a very big difference between lifter/valvetrain noise and bottom end (rods) noise. Find someone that can tell the difference so you can determine what the problem is.

88Saleen · April 20th, 2009, 08:42 PM

Originally Posted by Darrell

There is a very big difference between lifter/valvetrain noise and bottom end (rods) noise. Find someone that can tell the difference so you can determine what the problem is.

+ 1 bottom end noise is deff more of a solid sound rather just a tick like a lifter can make. if its just a lifter, if you have a general knowledge of the motor and pretty basic hand tools you should be able to do it. if you feel the least bit nervous either take it someplace or have someoen with mroe experience help.

87gtmustang · April 20th, 2009, 09:00 PM

tomorrow im going to take it by the local shop to see if they can tell

Traidmarx · April 20th, 2009, 09:28 PM

yea i mean if its something in the valve train it'll be a ticking if its a rod knocking its gonna sound some someone hitting the side of the motor with a hammer

89LX347 · April 20th, 2009, 10:17 PM

do you have good oil pressure?

87gtmustang · April 20th, 2009, 10:17 PM

its not really loud but loud enough to hear and its been doing this for about 6 weeks now. just if your on the driver side it sounds like its coming from and passanger and its the same way if your on the passenger side

87gtmustang · April 20th, 2009, 10:19 PM

yeah i got oil pressure about one min after the car starts and thats about the only gauge that works

1slo5.0 · April 20th, 2009, 11:50 PM

Originally Posted by 87gtmustang

yeah i got oil pressure about one min after the car starts and thats about the only gauge that works

So you only have oil pressure after the car has been running for a minute????

Traidmarx · April 20th, 2009, 11:58 PM

Originally Posted by 87gtmustang

yeah i got oil pressure about one min after the car starts and thats about the only gauge that works

not good, does the knock seem to go away after the pressure has built up?

MaroonNotchback408 · April 21st, 2009, 12:31 AM

valve noise will be like a tick and rod knock is heavier and it even sounds worse.

87gtmustang · April 21st, 2009, 12:33 AM

theres oil pressure it says a quature a way from the bottom for like a min but i think that has to do with the oil leak. bc right now i dont have alot of oil to any.
the knocking does quit down sometimes but it never goes away

Traidmarx · April 21st, 2009, 12:42 AM

and you're still driving it around for 6 months like that...i dunno if its something in your bottom end or not but if your oil pressure is erratic like that i'm suprised you haven't thrown a rod yet. check the sending unit make sure its functioning properly.

grnstang · April 21st, 2009, 01:29 AM

not sure why you wouldnt fill your motor with oil or why you would drive the car for this long and now ask about it....i hope you have something else to drive when your motor goes bye bye

Smirnoff · April 21st, 2009, 01:36 AM

if it leaks oil and you dont check it regularly theres a good chance its a bottom end knock not valvetrain

95StangMX · April 21st, 2009, 11:19 AM

Um yeah I would say a ROD and it may be thats what wrong with the car too......little to no oil in it right now?....

JBIGBOOTSY · April 21st, 2009, 12:50 PM

Does the car have a T-5, if so does the noise go away when the clutch is pushed in?

87gtmustang · April 21st, 2009, 06:39 PM

not 6 months but about 6 weeks its been knocking. i do check the oil its just when its low the gauge say low oil pressure.
the noise seems to still be there even with the clutch pused it.

Traidmarx · April 21st, 2009, 09:50 PM

Originally Posted by JBIGBOOTSY

Does the car have a T-5, if so does the noise go away when the clutch is pushed in?

wouldn't that be more of a whistling noise??

91Project · April 22nd, 2009, 09:53 AM

SERIOUSLY... Shut your freaking car off and quit driving it. You know oil is one of the most critical components to a motor yet your fine with driving around when its low? And by checking your oil regularly ( with a leak ) they mean to actually pop the hood and check it on the dipstick before you drive it. Dont wait for the dummy light to come on, ussually by then its too late.

April 20th, 2009, 08:04 PM	#1
87gtmustang Regular 1987 mustang GT Join Date: Oct 2008 Location: tx Posts: 257	motor knocking my motor is knocking. it seems to be coming from the middle. what can be the cause and is it worth fixing. my ideal is a lifter but i have also been told it could be a bent rod. if its a lifter should i just replace all or just the bad one. and how would i do this or should i have a shop do it. __________________ 5.0, steeda short shifter, edelbrock intake upper and lower, bbk cold air intake, 3.73, b303 cam, 65 mm throttle body, 65mm mass air, 24 lbs injectors, h pipe, dual flows dump and more to come

April 20th, 2009, 08:26 PM	#2
1slo5.0 Zippee is my step sister. 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: Fond du Lac, Wisconsin Posts: 10,353	There is a very big difference between lifter/valvetrain noise and bottom end (rods) noise. Find someone that can tell the difference so you can determine what the problem is. __________________ Thanks to: Trick Flow, Team Z Motorsports, Total Engine Airflow and Furo Racecraft My daily driver has 16 cylinders and 4400hp @ 1000 rpm....

April 20th, 2009, 09:00 PM	#4
87gtmustang Regular 1987 mustang GT Join Date: Oct 2008 Location: tx Posts: 257	tomorrow im going to take it by the local shop to see if they can tell __________________ 5.0, steeda short shifter, edelbrock intake upper and lower, bbk cold air intake, 3.73, b303 cam, 65 mm throttle body, 65mm mass air, 24 lbs injectors, h pipe, dual flows dump and more to come

April 20th, 2009, 09:28 PM	#5
Traidmarx Hardcore Enthusiast 1995 Mustang GT SLOWER THAN OLD PEOPLE FUCK..:-( Join Date: Aug 2008 Location: Roanoke,VA Posts: 2,026	yea i mean if its something in the valve train it'll be a ticking if its a rod knocking its gonna sound some someone hitting the side of the motor with a hammer __________________ 1995 Mustang GT..4.30's,BBK Longtubes, Off Road X-Pipe,Magnaflow Catback,BBK Intake,BBK Underdrive Pulleys Walbro 255lph pump,accel dizzy,MSD Coil,MSD 8.5 Super Conductors,front sway bar removed, more coming soon.

April 20th, 2009, 10:17 PM	#6
89LX347 Hardcore Enthusiast Join Date: Apr 2007 Posts: 1,251	do you have good oil pressure? __________________ I believe in art when it is not seen. I believe in music when it is not audible. I believe in God when He is silent.

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April 20th, 2009, 10:19 PM	#8
87gtmustang Regular 1987 mustang GT Join Date: Oct 2008 Location: tx Posts: 257	yeah i got oil pressure about one min after the car starts and thats about the only gauge that works __________________ 5.0, steeda short shifter, edelbrock intake upper and lower, bbk cold air intake, 3.73, b303 cam, 65 mm throttle body, 65mm mass air, 24 lbs injectors, h pipe, dual flows dump and more to come

April 21st, 2009, 12:31 AM	#11
MaroonNotchback408 Banned Join Date: Mar 2009 Posts: 157	valve noise will be like a tick and rod knock is heavier and it even sounds worse.

April 21st, 2009, 12:33 AM	#12
87gtmustang Regular 1987 mustang GT Join Date: Oct 2008 Location: tx Posts: 257	theres oil pressure it says a quature a way from the bottom for like a min but i think that has to do with the oil leak. bc right now i dont have alot of oil to any. the knocking does quit down sometimes but it never goes away __________________ 5.0, steeda short shifter, edelbrock intake upper and lower, bbk cold air intake, 3.73, b303 cam, 65 mm throttle body, 65mm mass air, 24 lbs injectors, h pipe, dual flows dump and more to come

April 21st, 2009, 12:42 AM	#13
Traidmarx Hardcore Enthusiast 1995 Mustang GT SLOWER THAN OLD PEOPLE FUCK..:-( Join Date: Aug 2008 Location: Roanoke,VA Posts: 2,026	and you're still driving it around for 6 months like that...i dunno if its something in your bottom end or not but if your oil pressure is erratic like that i'm suprised you haven't thrown a rod yet. check the sending unit make sure its functioning properly. __________________ 1995 Mustang GT..4.30's,BBK Longtubes, Off Road X-Pipe,Magnaflow Catback,BBK Intake,BBK Underdrive Pulleys Walbro 255lph pump,accel dizzy,MSD Coil,MSD 8.5 Super Conductors,front sway bar removed, more coming soon.

April 21st, 2009, 01:29 AM	#14
grnstang Hardcore Enthusiast 91 LX 13.7@101 Join Date: Oct 2008 Location: Norwalk OH Posts: 1,390	not sure why you wouldnt fill your motor with oil or why you would drive the car for this long and now ask about it....i hope you have something else to drive when your motor goes bye bye __________________

April 21st, 2009, 01:36 AM	#15
Smirnoff Regular 1982 GT t-top no proof of purchase Join Date: May 2008 Location: Allentown PA Posts: 453	if it leaks oil and you dont check it regularly theres a good chance its a bottom end knock not valvetrain __________________

April 21st, 2009, 11:19 AM	#16
95StangMX Hardcore Enthusiast 95 Mustang GT depends how many people are pushing Join Date: Oct 2007 Location: Playa del Carmen, Mexico Posts: 1,691	Um yeah I would say a ROD and it may be thats what wrong with the car too......little to no oil in it right now?.... __________________

April 21st, 2009, 12:50 PM	#17
JBIGBOOTSY MM Fanatic 1990 LX hatch Join Date: Aug 2006 Location: Hobart Indiana Posts: 3,101	Does the car have a T-5, if so does the noise go away when the clutch is pushed in? __________________ I <3 Econobarns AFR graph.

April 21st, 2009, 06:39 PM	#18
87gtmustang Regular 1987 mustang GT Join Date: Oct 2008 Location: tx Posts: 257	not 6 months but about 6 weeks its been knocking. i do check the oil its just when its low the gauge say low oil pressure. the noise seems to still be there even with the clutch pused it. __________________ 5.0, steeda short shifter, edelbrock intake upper and lower, bbk cold air intake, 3.73, b303 cam, 65 mm throttle body, 65mm mass air, 24 lbs injectors, h pipe, dual flows dump and more to come

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April 22nd, 2009, 09:53 AM	#20
91Project Regular 1991 Mustang GT Join Date: Mar 2009 Posts: 143	SERIOUSLY... Shut your freaking car off and quit driving it. You know oil is one of the most critical components to a motor yet your fine with driving around when its low? And by checking your oil regularly ( with a leak ) they mean to actually pop the hood and check it on the dipstick before you drive it. Dont wait for the dummy light to come on, ussually by then its too late. __________________ AutoMeter C2 Nitrous Guage FS PM for details

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