Lifter tick
#1
Lifter tick
First off its an ls1 from an 04 gto in an rx7. It has 10k original miles on the stock engine. It has had a slight tick lately that has been getting louder. It's from the passenger side.
I fixed every exhaust leak
Spark plugs are tight
I have the valve cover off and I need help. The rods look straight, the bearings for the rockers are intact, they are clean, etc.
What do I torque the rocker bolts down to? I can try tightening them. Also if I start the engine with the valve cover off will oil spray out completely or just run out on the rockers/springs etc. I really want to pinpoint and fix this noise.
I fixed every exhaust leak
Spark plugs are tight
I have the valve cover off and I need help. The rods look straight, the bearings for the rockers are intact, they are clean, etc.
What do I torque the rocker bolts down to? I can try tightening them. Also if I start the engine with the valve cover off will oil spray out completely or just run out on the rockers/springs etc. I really want to pinpoint and fix this noise.
#3
I would but my comp is being fixed all I have is my iPhone. Can't post from it. The tick is much louder at 1,000 rpm. You can hear it below 2k but after that the noise is drowned out.
#6
Thanks. I am very experienced with every thing but internals of engines. I can take all that apart for sure. But putting it back together, is there anything I have to do special? Like soak them in oil? Do I just unbolt the rockers and the push rods just slide out? Then when I put them together do I use a special assembly lube?
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#8
Ok I will.
Can you start the car with the valve cover off? Will oil go every where?
I got a write up on removal and instal of the rockers and rods. I was going to start it up with the cover off and listen to which one is making noise then just a take that one off to fix it. If I only remove one rocker and rod can I just put it back in, torque it down, crank it over, then retorque it. Or do I have to go through the whole process of putting the engine at TDC and torquing them all in sequence?
Can you start the car with the valve cover off? Will oil go every where?
I got a write up on removal and instal of the rockers and rods. I was going to start it up with the cover off and listen to which one is making noise then just a take that one off to fix it. If I only remove one rocker and rod can I just put it back in, torque it down, crank it over, then retorque it. Or do I have to go through the whole process of putting the engine at TDC and torquing them all in sequence?
#9
Yes you can start it with the valve cover off, just don't rev the engine. Once they're off you can use a mechanics stethoscope and put it on each rocker bolt and see which one(s) are making the most noise to help narrow down your problem. I just went through this whole ordeal recently...
As far as the rocker, I don't know if you can do just one but if it were me personally I would just go through the full sequence to make sure it's all right...
As far as the rocker, I don't know if you can do just one but if it were me personally I would just go through the full sequence to make sure it's all right...
#11
OP you could have the car running then pull the plug wire off a coil one at a time that should tell you where the tick is coming from. Then you will only have to check one cylinder not all eight.
#13
Ok I took the valve cover off the right side since I hear it distinctly out of the right side of the car.
I started it and could clearly hear it in the car but I put my stethoscope on the bold of each rocker bolt and they all sounded the same. I couldn't pinpoint the sound at all.
I looked under the car and could hear it louder under the car but it could just be radiating through the long tubes.
What should I do next?
I started it and could clearly hear it in the car but I put my stethoscope on the bold of each rocker bolt and they all sounded the same. I couldn't pinpoint the sound at all.
I looked under the car and could hear it louder under the car but it could just be radiating through the long tubes.
What should I do next?
#18
Yup, that's the same sound I have from how you're explaining it. I'm swapping mine out for an LS2 this winter though. I'm anxious to get this LS1 apart and find out what the ticking is, my guess is lifter...
#20
Why would the exhaust valve be making noise like that? Bad valve seal or something? I think it's running rich. It needs a tune. Getting like 10mpg normal driving. Could this cause it?