4.0 valve train noise
#1
Join Date: Aug 2008
Location: porterville, ca
Posts: 373
Likes: 0
Received 0 Likes
on
0 Posts
4.0 valve train noise
the valve train on my motor is nocking pretty good. i know its my valve train because the knocks are high in the motor and i checked it with a stethiscope (sp). i need some help in adjusting it. so how and what is needed to adjust the valve train on my motor?
thanks you for the help
shane
thanks you for the help
shane
#6
Join Date: Aug 2008
Location: porterville, ca
Posts: 373
Likes: 0
Received 0 Likes
on
0 Posts
#9
#10
Join Date: Aug 2008
Location: porterville, ca
Posts: 373
Likes: 0
Received 0 Likes
on
0 Posts
the motor has close to 140,000. the noise is really not that bad. i just thinking that you have toset the gaps of the rockers if you remove the rocker assembly. so with the motor having this much milage i figured it would bee a good idea to reset the gaps. the noise is mainly at idle. but right now i got to deal with a new noise but that is a whole nother thread.
thanks for all the help.
thanks for all the help.
#11
I have a 94 4.0 OHV. I have over 500.000 miles on it and put almost 400.000 on the first motor. I had my first motor replaced with a Jasper rebuild. I was only running on 5 cylinders on the old motor and neither my mechanic or Ford could figure out why. I finally figured it out through extensive on line research about the poor oiling going on to the valve train and that over time the pushrods would wear a dimple in the bottom of the rocker arms.
There is a fix for this and that is an upgraded rocker arm assembly with hardened inserts and the hardened push rods. Make sure the oil pump is working properly and there are no restrictions and run a thinner oil that can get to the valve train easier. I have a little over 100.000 on this new motor and it is making noise and ready for the upgrade. Try Delta Cams for the kit, about $200.00 and an easy install once you get the valve covers off. The valve train is not adjustable on these motors.
There is a fix for this and that is an upgraded rocker arm assembly with hardened inserts and the hardened push rods. Make sure the oil pump is working properly and there are no restrictions and run a thinner oil that can get to the valve train easier. I have a little over 100.000 on this new motor and it is making noise and ready for the upgrade. Try Delta Cams for the kit, about $200.00 and an easy install once you get the valve covers off. The valve train is not adjustable on these motors.
#12
I have the same problem at idle. The engine makes a pretty good knocking noise. I only have 120k on my truck and I don't know if it might cause problems. When I fist start up the truck there is no read on the oil gauge and after a minute it starts flickering and shoots up to normal. Is this a problem? It seems to happen only in the winter..
#13
There is a fix for this and that is an upgraded rocker arm assembly with hardened inserts and the hardened push rods. Make sure the oil pump is working properly and there are no restrictions and run a thinner oil that can get to the valve train easier. I have a little over 100.000 on this new motor and it is making noise and ready for the upgrade. Try Delta Cams for the kit, about $200.00 and an easy install once you get the valve covers off. The valve train is not adjustable on these motors.
if u are super serious about fixing what u have ur only option would be longer pushrods but thats a pretty precise operation figuring out what you need so u need to do some research or have soemone who knows how help you. not doubting ur abilities but if they are wrong ur gonna smash valves and ruin ur motor.
#14
i am putting these on mine right now and its 180 for the parts and shipping and when u send ur shafts back u get 42 back for the core. its really a pretty good deal. thats rockers that have inserts, tips hardened, refurbished shafts, and a new set of pushrods.
if u are super serious about fixing what u have ur only option would be longer pushrods but thats a pretty precise operation figuring out what you need so u need to do some research or have soemone who knows how help you. not doubting ur abilities but if they are wrong ur gonna smash valves and ruin ur motor.
if u are super serious about fixing what u have ur only option would be longer pushrods but thats a pretty precise operation figuring out what you need so u need to do some research or have soemone who knows how help you. not doubting ur abilities but if they are wrong ur gonna smash valves and ruin ur motor.
#15
Replaced my pushrods and rocker arm assembly today on a 4.0 OHV. Used the Delta Cam kit with the hardened inserts in the rockers and hardened rods and got about 20% more power out of the truck. Huge difference, obviously I had worn some dimples in the rocker arms from the rods. Took me about 5 hours and $200.00 bones but sure was worth it. The stock rocker arm assembly and rods suck and will start causing problems after about 100.000 miles. Basically they wont open all the way and the power really starts to suffer. This motor is known for poor oiling up top and this is what happens but the delta cam kit is the fix.
#16
I recently acquired a 2000 Ranger XLT with 204,000 miles on it. The engine has been changed with a long block and not knowing what all it came with. It has a horrible noise, I am assuming the valve train noise. I put an additive in it to "flush" the lube system and then changed the oil and filter. I used the recommended 5W30 oil and a Motorcraft filter. The noise is still there but after running it for about 10 miles and getting the engine hot, the noise is gone at idle. If you tap the throttle to raise the rpm just a little, the noise is there but goes away when it returns to idle. The truck sat for 7 months, I put Chemtool in the gas which I haven't added any fresh gas to the tank yet. The engine runs great and smooth, just the noise which I have read doesn't seem to hurt anything. Any suggestions?
Thread
Thread Starter
Forum
Replies
Last Post
talkforparts
OLD - Interior, Exterior, Electrical, & Misc.
0
07-20-2010 01:41 PM