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Ticking noise

R

Rodd

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Antelope, CA
My 95 is ticking. Last month a T/C bolt came lose and wore a groove in the dust cover and took out the starter as it came out. I used blue loctite and torqued to 50 lb. ft. I noticed it ticking again. I was thinking it was an injector but it is getting louder. I'm thinking it might be one of the T/C bolts but I'm not sure. I don't want to take it apart just to find out it is something different. Take a look/listen to this video and let me know what you think. I also took the serpentine belt off and the noise was still there with no change.

 
With a larger size screw driver, one that fits Your ear real nice, get under the truck, poke the screw driver against the bell housing/flywheel cover, stick the other end against Your ear and listen.
You can pretty much pin point a noise with this method.
Use a longer screw driver for areas around the spinning fan the the moving serpentine belt. If You have longish hair, be sure to tie it back.
do not wanna hear of someone gettting tangled into moving components.
 
My buddy always used to shrug at noises and say "that just means its working ". Lol. He was not a good mechanic. Ive got a stethoscope with a rod on it and an extension that does the screwdriver trick with finesse. From my local parts store. Eliminates noise thats ambient and bouncing around like a ventriloquist. Just dont hit the end on a fan blade or belt. Nearly blows your eardrums....
 
Did you do all 6 TC bolts with blue loctite? Even so it may have a worn thread in the TC that allows it to keep coming loose. It's 6 bolts to pull the cover and check, 12 if you have to pull the crossover...
 
It is sounding like the T/C bolt again. I did do the 6 bolts with blue Permatex. When I did it is seemed really thin like super glue. I thought it would be thicker. If it is a worn thread on the T/C is there a fix? I did torque them to 50 lbs. That is what the torque specs on the stick said. Easy to do just a PITA since I just did it a month ago.
 
If the bolts held to the 50 pounds foot torque then they are okay. You could probably go in with some harder red Loktite compound. Makes it a little tougher to get them undone if You ever want to pull the transmission or enjun, but they will come loose. Even says takes heat to loosen the red thread locker, HA, I`ve undone them with a 3/8ths ratchet with a longer handle, no problem.
 
I just got done inspecting the T/C bolts an all are tight. So the noise is something else. The previous owner put in a rebuilt motor from pepboys in 2012 and it only has about 6k miles on it. Since the ticking is there with and without the belt attached I know it isn't any of the pulleys. It could be a rod but I'm thinking it might be an injector. The previous owner told me that when the motor was done they used marine injectors. Leroy told me that the good Bosch marine injectors have been gone since about 2008 or so. I'm guessing they are probably the cheap chinese ones. I bought a $4 stethoscope from HF to try and isolate where the ticking is coming from. Should I just put it on each injector to check them?
 
After putting the stethoscope on the driver side injector lines I heard no ticking. On the passenger side I put it on the front injector line and worked my way toward the cab. The closer I moved it to the cab the louder it got. It sounds like it is either the injector closes to the firewall on the passenger side or a possible rod? I tried to put the stethoscope up to the microphone on my phone to record it but it didn't work. Any thoughts?
 
Also, just throwing it out there, for another easy look..
Harmonic balancer pulleys will tick when the rubbers dead inside..
Make sure that's not tapping on the bolt heads
 
@monka
If ever a harmic balancer us suspect- grab it and try to rip the outside ring off with your hands. If you do- so what- it was going to come apart.

As for possible rear passanger injector:
Try cracking injectors one at a time to isolate which cylinder is the problem.
If you think you have an injector causing it, pull that injector and the front driver side and swap their location. If the noise follows that injector, there ya go.
No telling what injectors you have without disassembly btw.
Other common ticks can be rod, lifters, rocker arm from button.
 
Maybe a fairly "tinny" or sheet metal sound. Push on the dust/rock cover of the flywheel. I tapped a spacer and bent mine to get rid of an intermittent rattle sound.
 
Will L. said:
Other common ticks can be "rod", lifters, rocker arm from button.
Click to expand...


The reason why I told Him to listen at where the oil cooler lines hooks to the engine block. If He can hear it there then I would suspect a spun rod bearing.
I have a 350 V8 all tore down, spent over six hundred bucks on the truck. It had a lifter ticking sound. I pulled rocker covers, started adjusting lifters, no. 7 cylinder, backed off the lifter a half a turn, tick went away but came back again, tightened it a half a turn, tick went away but came back again. HA, lifters is bad.
I pulled the cam, new cam, lifters, push rods and rocker arms. also new timing chain/sprocket set, dropped the pan, nothing bad in there, installed a new oil pump and put it back together.
fired it up, all is good until the engine came up to temp; ticking came back. dropped the pan again, pulled no. 7 rod cap and the bearing had spun in the rod.
Now, if I would have pulled plug wires, one at a time, I would have known what the noise was.
So yes, loosen the injector line to the suspect cylinder, if the tick goes away, it could be a rod bearing has spun.
Funny about the spun rod bearing in the 350, it has very little galling on the bearing surface, so it was not a knock, just something like a bad lifter.
I am trying to sell the truck with all the parts for 800 bucks, no takers yet. LOL still setting on My trailer waiting for someone to buy it and I can deliver it for them. LOL
 
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