Ticking motor
Thread Starter
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Cargo Master
Joined: Oct 2008
Posts: 2,308
Likes: 1
From: Elyria, OH
Ticking motor
Well. Finally get everything running right and got bord today and wanted to ask a question about this annoying little problem i've had since i got the truck. Ive heard motors tick before, like they were low on oil and when you filled 'em up, they'd quit. Mine is full of oil, fan blade isn't hitting anything. The noise gets there when the motor warms up. It almost sounds like it is comming from the back or the motor somewhere. Felt around for exhaust leaks back there, but I didn't find anything. Any ideas on this one? Its the '89 in my sig.. The motor is a 351w w/ C6
Senior User
Joined: Jan 2009
Posts: 219
Likes: 0
From: Maricopa, AZ
It's the poor-man's stethoscope. It works pretty good.
I hope you don't have the same issue I did. I diagnosed mine as an exhaust leak, or a sticky lifter. Unfortunately, it was the wrist pin and bushing on the number 4 cylinder that were worn out, and slapping. Needless to say, I'm sporting a new engine now.
I hope you don't have the same issue I did. I diagnosed mine as an exhaust leak, or a sticky lifter. Unfortunately, it was the wrist pin and bushing on the number 4 cylinder that were worn out, and slapping. Needless to say, I'm sporting a new engine now.
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 38
From: EXTREME southwest CT
The broom handle transmits noise like a champ.
Any solid rod, like a dowel will work as well.
Regarding BRay's noise, I think it could be the A.I.R. pipe that crosses from one head to the other is rusted out, or the check valve has come off the pipe.
There are posts on this.
Any solid rod, like a dowel will work as well.
Regarding BRay's noise, I think it could be the A.I.R. pipe that crosses from one head to the other is rusted out, or the check valve has come off the pipe.
There are posts on this.
Post Fiend
Joined: Jan 2005
Posts: 8,402
Likes: 10
The broom handle transmits noise like a champ.
Any solid rod, like a dowel will work as well.
Regarding BRay's noise, I think it could be the A.I.R. pipe that crosses from one head to the other is rusted out, or the check valve has come off the pipe.
There are posts on this.
Any solid rod, like a dowel will work as well.
Regarding BRay's noise, I think it could be the A.I.R. pipe that crosses from one head to the other is rusted out, or the check valve has come off the pipe.
There are posts on this.
Thread Starter
|
Cargo Master
Joined: Oct 2008
Posts: 2,308
Likes: 1
From: Elyria, OH
The broom handle transmits noise like a champ.
Any solid rod, like a dowel will work as well.
Regarding BRay's noise, I think it could be the A.I.R. pipe that crosses from one head to the other is rusted out, or the check valve has come off the pipe.
There are posts on this.
Any solid rod, like a dowel will work as well.
Regarding BRay's noise, I think it could be the A.I.R. pipe that crosses from one head to the other is rusted out, or the check valve has come off the pipe.
There are posts on this.
Ill play around with the "broom handle" trick and see if i can pinpoint the sound. I hope its nothing major.
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Cargo Master
Joined: Sep 2004
Posts: 2,687
Likes: 6
You can also use a large screwdriver. I use the broomhandle though. Test how it works by listening to the front and rear bearings on your alternator. That'll show you how it works.
If it's a lifter, my mechanic's advice is to use Mobil 1 5W30. That's how he does it in his own old rig.
If it's a lifter, my mechanic's advice is to use Mobil 1 5W30. That's how he does it in his own old rig.
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Freshman User
Joined: Mar 2009
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i'm not sure if yours is the same as my tick, but it happens shortly after it warms up while idling, sounds like a plug wire arcing but its this little valve/sensor thing that has a hose from the throttle body to, it sits by the egr valve, and i feel it pulsate too. im curious on what it exactly does however.
Senior User
Joined: Jan 2009
Posts: 219
Likes: 0
From: Maricopa, AZ
I could be wrong, but I think the pulsing is coming from the egr solenoid, and is doing what it is supposed to be doing in opening and closing the EGR valve.
My engine noise sounded a bit more pronounced than yours does, and it was present during all phases of start-up, warm-up, and increased/decreased with throttle fluctuation. I hope my problem is not the same as yours, but, it could be. If so, mine sounds like it was in a more advanced state of deterioration. Because it really sounded more like a minor exhaust leak, or sticky lifter, than a spark plug wire arc.
I've read a few pages about the location of the PCV to the intake being the potential cause of the issue by dumping directly into the back of the intake. This makes sense to me because it would be feeding the number 4, and number 8 cylinders. My problem area was number 4, but, number 8 seems to fail, too.
My engine noise sounded a bit more pronounced than yours does, and it was present during all phases of start-up, warm-up, and increased/decreased with throttle fluctuation. I hope my problem is not the same as yours, but, it could be. If so, mine sounds like it was in a more advanced state of deterioration. Because it really sounded more like a minor exhaust leak, or sticky lifter, than a spark plug wire arc.
I've read a few pages about the location of the PCV to the intake being the potential cause of the issue by dumping directly into the back of the intake. This makes sense to me because it would be feeding the number 4, and number 8 cylinders. My problem area was number 4, but, number 8 seems to fail, too.
