I recently begin to hear a knocking sound at idle when the truck is started, under the hood. It goes away after driving, and it doesn't always knock, it doesn't seem to matter if its cold or warm. Sounds like a lifter on the passenger side, but you can hear it with the windows rolled up.

Any ideas?

check ur oil. or its the lifters knocking. im not 100% sure though so dont quote me

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Muddin in the ranger, killin ricers in the f350

95 ford ranger 3.0 v6 side step 5 speed 4x4
mods: 6" bds sus lift, 33x12.5r15 bfg km2, expo OHC/expo power seats, full length expo console, 2 1/2" flowmaster super 44 cat back, 4 procomp 5" offroad lights, clear headlights and turn signals, 6k hid kit, 25% tint (fronts)

PNW CREW

Oil is fine, in fact just did a change thinking it would rid of the sound. If its the lifters, I haven't noted any performance loss, and as I said it isn't always there, sometimes when I start the truck after its sit for a minute or so, I'll hear it, other times I can start it up, and its fine. My truck isn't even missing, or nothing that I can tell. I had a Taurus 3.0L that had a headgasket gone, and it'd cause the lifters to knock really bad, and it would cause my car to miss fire, this thing doesn't even seem like its all the lifters, but maybe one. Can they be adjusted or what?

I have the same thing on 2.5L until it warms up. From previous experience, the brand of oil can make a difference believe it or not. One brand is more prone to it than others depending on what your engine likes. You may have to experiment a little to see which ones will work best for your engine. It's kinda like a firearm, each one has it's "preference" on what it will shoot best with.

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Sgtsandman's Work in Progress
2011 Ranger XLT, 4X4, 4 door Super Cab. 4.0L, 5 Speed M50D-R1HD, 3.73:1, 8.8" open differential, Jason Pace cap
2019 Ford Ranger STX FX4, Super Crew, 2.3L Ecoboost, 10 speed automatic, 3.73:1 with rear locker, Leer 100XR cap

is it ohc. if it is the the valves might need adjustment

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2007 ranger 2.3 5 speed "civic killer" 1961 jeep cj-5 REDNECK RICER [><] "If a leave here tomorrow will you still remember me" Lynyrd Skynyrd 4 ever

Is your oil pressure up?
Check for an exhaust leak at the manifold.

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2010 ranger sport,3 inchs and 32's

Dude its the hamster wheel. The bearnings are about shot.. Time for a new hamster wheel



Sorry, I couldnt resist!

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www.1fun4rd.blogspot.com

Seems to be fine. I just changed the oil, been using Mobile 1 Synthetic Truck and SUV since I got the truck. Doesn't seem to be an exhaust leak that I can tell..

Its a SOHC, 2004 Ford Ranger.

I have the same problem, im trying to find out how to fix it.

Dude its the hamster wheel. The bearnings are about shot.. Time for a new hamster wheel

And stupid Question, What is the Hamster Wheel? Oh god im gonna regret this!

I have it at start up but it doesnt seem to be harming the performance until I run for a longtime at 70. When i slow down it feels like im losing spark.

I have a 4.0 OHV with the same annoying sound. Tried everything, went everywhere, and no one could figure it out. Finally picked up a can of Sea Foam Spray carb-cleaner, and right into the throttle body it goes. Make sure you pass by the butter-fly and keep the rpms up to 3500 to 4000 while spraying.
Worked like a charm. Less than $10.00.
regards,
MT

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2000 XLT 4X4 Sport Extended Cab, 4.0 OHV w/Factory Tow Package

lifters?