95 maxima lfter tap or timing chain noise ?
95 maxima lfter tap or timing chain noise ?
its my 95 maxima with 90,000 miles it sounds simular to a 95 vg30 truck i had that the t-belt tesioner had gone bad on ,but it also sounds simular to my friends 87 vg truck that had a set of lifters that had lost their ability to pump up?it clicks and taps in time with the motor.dosnt mater hot cold ,idle or under a load or reving up it just clicks along i dont want a failure please help i had asummed i needed a belt and tensioner but after i called the dealer the parts guy said that the vq motor is a chain driven one so what could it be ?any ideas i cant afford to drop it off at nissan and have them tear into it if i know what to search for im sure i can handle it im just looking for some direction i have not had the car long and im not very familure with the vq30 yet thanks in advance john
1995-96 MAXIMA VQ30 ENGINE TIMING CHAIN NOISE
This bulletin amends NTB96-086 and includes updated Service Information, Parts Information and an updated Service Procedure. Please discard all previous paper copies of NTB96-086.
APPLIED VEHICLE(S):1995-96 Maxima (A32)
APPLIED VIN(S):Vehicles built beforeJN1CA21D*TT159384, JN1CA21D*TT736598 or JN1CA21D*TM417975(depends on production line)
APPLIED DATE(S):Vehicles built before February 2, 1996
SERVICE INFORMATIONA new timing chain tensioner, tensioner gasket and guide are available if a rattle of either several seconds or continuously is heard coming from the area of the timing chain cover when the engine is started after a cold soak.NOTE: This new tensioner, tensioner gasket and guide should be installed as a set whenever repairs are performed on the slack-side guide.
SERVICE PROCEDURE1. Verify the engine noise is coming from behind the timing chain cover area and occurs under the conditions described above.
2. If the noise is verified, remove the timing chain cover and check the upper chain tensioner(s) by pushing down on the upper chain mid-span, noting the ease of deflection:. If the chain feels tight, proceed to step 3.. If the upper chain is loose, check the upper tensioners for sticking or clogged screens. Replace if necessary.
3. Remove the old lower tensioner. Check to make sure the oil feed passage to the chain tensioner is clear:a. Remove the engine oil filter.b. Cover the chain tensioner oil feed hole on the front of the block with a rag to catch any oil that may be blown out of the oil feed passage.c. Apply shop air to the oil filter mounting stud to pressurize the oil system. Once the oil from the passages has cleared, a steady stream of air from the lower chain tensioner oil feed hole should be noted. If not, thoroughly clean the passage and recheck to ensure good oil flow.
NOTE: The oil feed passage must be clear and pass air freely before installing the new tensioner, gasket and guide.
4. Install a new lower timing chain tensioner, tensioner gasket and guide as a set using the parts listed in the Parts Information table below.
NOTE: Do NOT use any gasket sealer on the new tensioner gasket.
5. Install a new engine oil filter
NOTE: It is recommended that the engine oil be changed at this time, as well.
6. Reinstall the timing chain cover.
7. Start the engine and let it idle. This will clear any air from the oil feed passages that was trapped there in step 3c.
8. Stop the engine, allow the vehicle to completely cool down and retest for the noise.
PARTS INFORMATION
DESCRIPTION PART # QUANTITY Tensioner, timing chain 13070-31U03 1 Timing chain slack guide 13091-2YO01 1 Gasket, tensioner, timing 13079-31UOO 1 Oil filter 1S208-9EOOO 1
This bulletin amends NTB96-086 and includes updated Service Information, Parts Information and an updated Service Procedure. Please discard all previous paper copies of NTB96-086.
APPLIED VEHICLE(S):1995-96 Maxima (A32)
APPLIED VIN(S):Vehicles built beforeJN1CA21D*TT159384, JN1CA21D*TT736598 or JN1CA21D*TM417975(depends on production line)
APPLIED DATE(S):Vehicles built before February 2, 1996
SERVICE INFORMATIONA new timing chain tensioner, tensioner gasket and guide are available if a rattle of either several seconds or continuously is heard coming from the area of the timing chain cover when the engine is started after a cold soak.NOTE: This new tensioner, tensioner gasket and guide should be installed as a set whenever repairs are performed on the slack-side guide.
SERVICE PROCEDURE1. Verify the engine noise is coming from behind the timing chain cover area and occurs under the conditions described above.
2. If the noise is verified, remove the timing chain cover and check the upper chain tensioner(s) by pushing down on the upper chain mid-span, noting the ease of deflection:. If the chain feels tight, proceed to step 3.. If the upper chain is loose, check the upper tensioners for sticking or clogged screens. Replace if necessary.
3. Remove the old lower tensioner. Check to make sure the oil feed passage to the chain tensioner is clear:a. Remove the engine oil filter.b. Cover the chain tensioner oil feed hole on the front of the block with a rag to catch any oil that may be blown out of the oil feed passage.c. Apply shop air to the oil filter mounting stud to pressurize the oil system. Once the oil from the passages has cleared, a steady stream of air from the lower chain tensioner oil feed hole should be noted. If not, thoroughly clean the passage and recheck to ensure good oil flow.
NOTE: The oil feed passage must be clear and pass air freely before installing the new tensioner, gasket and guide.
4. Install a new lower timing chain tensioner, tensioner gasket and guide as a set using the parts listed in the Parts Information table below.
NOTE: Do NOT use any gasket sealer on the new tensioner gasket.
5. Install a new engine oil filter
NOTE: It is recommended that the engine oil be changed at this time, as well.
6. Reinstall the timing chain cover.
7. Start the engine and let it idle. This will clear any air from the oil feed passages that was trapped there in step 3c.
8. Stop the engine, allow the vehicle to completely cool down and retest for the noise.
PARTS INFORMATION
DESCRIPTION PART # QUANTITY Tensioner, timing chain 13070-31U03 1 Timing chain slack guide 13091-2YO01 1 Gasket, tensioner, timing 13079-31UOO 1 Oil filter 1S208-9EOOO 1
i tried the screwdriver scope test kinda sounded like the chain cover area .stopped by the dealer a tech listened he said it sounded like the port was probly blocked up some (to the tensioner ) and that it could also be affecting the vtc ? he suggested to change oil but to substitute 2 of the quarts for atf then drive it (mostly freeway) for about 3 days then change oil agian to possibly unclog the oil passages.although i thought that you had said my car dosnt have vtc on that other post i first was on is this a good corse of action ?or should i just perform the replacement mentioned above ?and how involved is it how many hrs labor dose it call for ?so if i need to do it i know weather im gonna need just a afternoon or a weekend ?thanks in advance for your advice
that is a known trick he told you about. as far as longevity I couldnt tell ya. the reason using atf is recommended is because atf is a detergant and has the ability to clense the oil ports. I use atf to clean my impact tools once a month . they show an almost immediate revitalization after running it through them. give it a shot but I wouldnt drive more then 50 to 75 miles with the atf in there.
tried the atf trick ------didnt work so im gonna do the tensioner and guides /how big a job is it couple hours 5-10 ?? any tricks or real pain in the *** or is it fairly simple ?also when i pulled into my garage after the aft run on the freeway to rechange the oil i installed a jim wolf k&n stlyle air filter upon start up my check eng light was on i figured it was becuase i unplugged a lil sensor that was pre filter in the stock airbox ,becuase the kit did not have a orifice for it ,i plugged it back in and put it inside the filter ,light was still on ,so i unplugged the battery for a few minutes in case something needed to reset -----its still on any ideas on that one?thanks for your time john
the chain replacement is a pain in the but. it would take me close to 8 hrs with a hoist and air tools you could count on possibly a 2 day project. it is very difficult to get in to it cause of the location. when you do it you should remove the rear cover and reseal it. cause you will most likely disturb the oil port seal to the rear of the engine compartment next to the crank pulley. codes dont just clear when you disconnect the battery on obdII cars. if you just did it recently give it a couple days to go off.