so my ranger has the common valve tick...but ive noticed its gotten louder...now i only have 69k on it and run full syntheic through the truck...i am in a colder climate so im not sure if mayb i shud just increase the weight of the oil or wat? are the valves or rockers adjustable from factory? ive never torn into one of these motors...any help is appreciated

 

timing chain rattle i bet. what rpm range? what year truck?

 

ive got the typical rattle at idle, it goes away when i have my defrost on and the ac unit kicks in so i think it might be something to do with that...my moms Yukon raps like crazy, shes brought it numerous times to teh dealer, its warrentied for 100k and shes got 20 on it so...my dad and i beat the snot out of it when we tow our snowmobile trailer

 

mines a 00 and i have it at idle and sometimes through accleration..

 

Your truck has the pushrod engine. So it could be your lifters.

 

i have a 4.0 ohc...i duno if htat changes anythin...but if it is my lifters r they adjustable or shud i look into getting a new set?

 

its only got 69k on it how much grime can be in the motor? though when i go the truck it took me a whole two wks to clean the intake out(had squirrel nuts in it) haha...wats a can of seafoam cost? normal auto parts store carries it?

 

Only costs like 4 bucks ro so.. nappa has it, I think even Walmart has it.. pretty much anywhere, its in a red/white screw top style metal can :-)

 

One thing you ought to check before doing anything else...

Check to see if a spark plug is coming loose. When that happens it sounds exactly like you describe. Besides.. it's free and rules out at least one variable.

Rich

 

they rnt loose i kno that i just checked those...but i guess ill look into this seafoam **** and see wat it does....wat happens if i use the whole can? haha

 

your oil pump might be goin out

 

When my engine gets a little cranky, I'll stuff a can of "Engine Restore" in. Its in the silver can. Typically done at oil changes.

It will stop the damn marbling noise for awhile.

 

i dont get how this motor can have so many problems for bein relativly low mileage wise

 

eh you prolly just got one that was made on some employes last day. LOL

 

Its the parts used. Pistons have a skirt to short so they wobble in the bore making a diesel like sound at idle.

As for the ticking, I'm thinking you got a leaky lifter needing some cleaning. Worst case its a push rod/cup that has worn a little creating the noise.

All perfect reasons for a cam swap. :P

 

Are you sure its not injector noise?

 

cudnt tell ya...never heard an injector go bad...im not even sure where they are on this motor...but now not only is it making hte tickin sound ive got a high idle...this truck use to idle below 1000rpms...now it idles over that, possibly a vaccum leak? could that also account for pour gas mileage?

 

Injectors tick when they fire, its the sound of the valving closing. Doesn't mean they are bad.

My 4.0 will idle around 1100 - 1200 cold. Warm its around 800. Its been like this since new. Not sure what its suppose to be. YMMV.


As for gas mileage 12-13 city, winter is about the norm. In temps that get close to zero mileage will drop to 10-11 pending warm up time. My personal best was 7mpg driving around in a blizzard playing in the snow.

 

guess then im gettin normal gas mileage...i was gettin 300 in the summer and it suddenly just droped...my last ranger i never had that problem...but then again my last ranger had a 4banger

 

Mine has a slight tick...but other times i have the "marbley" sound like Blhde said...ive never tried that seafoam stuff, i heard it works good? I put a quart of lucas oil treatment in every oil change.....may not do anything but it has quieted down the motor.

 

the 4.0 OHV has been known to have slight valve train problems near where the pushrods meet the rockers. The pushrods gall (sp?) out the rocker arms causing noise. I believe replacement of both rods and rockers is the fix, but I think you can get away with just replacing the rockers and flipping over the rods.