Question about 2000 Dodge Caravan

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Dodge Caravan 2000, 3 l engine, 109000 km/ mechanical valve lifters that are out of adjustment

Hi guys, is it too expensive tohave somebody to adjust the mechanical valve lifters that are loose and make noise when the engine is still cold? Can you give me a rough idea how much? I hope that they don't have to remove the engine to do this job?
Thanks,
John

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  • daviscw Jul 23, 2008

    I have a 2000 Grand Caravan 3.3 with 92,000 miles. I had the oil changed and it starting ticking very loud even with Lucas added. Any suggestions?

  • Anonymous Mar 25, 2014

    valves making noise

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The next time you do an oil change, put a liter of tranny fluid in with the oil BEFORE you change it. Let it run for an hour or two.The tranny fluid will clean out the gunk that causes your lifters to stick.Now do your oil change. Do this each time you change your oil, only use a 1/2 liter each time. You will be amazed at the difference, I was.

Posted on Dec 08, 2008

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They are not adjustable they are hydralic they wear out or you arent getting enough oil up top...because of an oil pump or clog

Posted on Jun 12, 2008

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3 Answers

3.8 dodge runs great but has a very loud ticking/tapping under valve cover gets louder when warmed up or more rpm


Not familiar with this specific engine, but I think you have adjustable rocker arms to adjust valve lash. May just need adjustment, but inspection will show if something is damaged.

Jan 22, 2015 | 2005 Dodge Grand Caravan

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How do you adjust or fix lifters on a 99 dodge grand caravan


Those lifters should be hydraulic self adjusting lifters. Have some one locate the exact location of the noise and go from there.

Aug 09, 2014 | Dodge Grand Caravan Cars & Trucks

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2000 dodge 318 do you have to adjust valves after instaling heads


I only remember having to adjust valve gaps when using solid lifters. With hydraulic lifters this shouldn't be necessary.

Jan 26, 2014 | Cars & Trucks

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My 2005 Dodge Caravan has a loud engine. It sounds more like a diesel engine that gas. Mechanic changed the water pump but the noise is still there. Any guesses what this could be? The engine ligh


Check this information about "engine noses"...

ENGINE CLICKING NOISES
A clicking or tapping noise that gets louder when you rev the engine is probably "tappet" or upper valvetrain noise caused by one of several things: low oil pressure, excessive valve lash, or worn or damaged parts.

First, check the engine dipstick to see if the oil level is low. If low, add oil to bring it back up to the full mark. Is the engine still noisy? Check your oil pressure. A low gauge reading (or oil warning light) would indicate a serious internal engine problem that is preventing normal oil pressure from reaching the upper valvetrain components. The cause might be a worn or damaged oil pump, a clogged oil pump pickup screen or a plugged up oil filter. Using too thick a viscosity of motor oil during cold weather can also slow down the flow of oil to the upper valvetrain, causing noise and wear.

COLLAPSED LIFTER NOISE
Worn, leaky or dirty lifters can also cause valvetrain noise. If oil delivery is restricted to the lifters (plugged oil galley or low oil pressure), the lifters won't "pump up" to take up the normal slack in the valvetrain. A "collapsed" lifter will then allow excessive valve lash and noise.

VALVE LASH NOISE
If you can rule out lubrication-related problems as a cause, the next step would be to remove the valve cover(s) and check valve lash. On older import engines, mechanical lifters require periodic valve lash adjustments (typically every 30,000 miles). Too much space between the tips of the rocker arms and valve stems can make the valvetrain noisy -- and possibly cause accelerated wear of both parts.

To measure (and adjust) valve lash, you need a feeler gauge. The gauge is slid between the tip of the valve stem and rocker arm (or the cam follower or the cam itself on overhead cam engines) when the piston is at top dead center (valve fully closed). Refer to a manual for the specified lash and adjustment procedure. Also, note whether the lash spec is for a hot or cold engine (this makes a big difference!).

On engines with hydraulic lifters, oil pressure pumps up the lifters when the engine is running to maintain zero lash in the valvetrain. This results in quiet operation. So if the rocker arms are clattering, it tells you something is amiss (bad lifter or worn or damaged parts) or the rocker arms need adjusting.

DAMAGED ENGINE PARTS NOISE
Inspect the valvetrain components. Excessive wear on the ends of the rocker arms, cam followers (overhead cam engines) and/or valve stems can open up the valve lash and cause noise. So too can a bent pushrod or a broken valve spring.

RAPPING OR DEEP KNOCKING ENGINE SOUND
Usually bad news. A deep rapping noise from the engine is usually "rod knock," a condition brought on by extreme bearing wear or damage. If the rod bearings are worn or loose enough to make a dull, hammering noise, you're driving on borrowed time. Sooner or later one of the bearings will fail, and when it does one of two things will happen: the bearing will seize and lock up the engine, or it will attempt to seize and break a rod. Either way your engine will suffer major damage and have to be rebuilt or replaced.

Bearing noise is not unusual in high mileage engines as well as those that have been neglected and have not had the oil and filter changed regularly. It can also be caused by low oil pressure, using too light a viscosity oil, oil breakdown, dirty oil or dirt in the crankcase, excessive blowby from worn rings and/or cylinders (gasoline dilutes and thins the oil), incorrect engine assembly (bearings too loose), loose or broken connecting rod bolts, or abusive driving.

Bearing wear can be checked by dropping the oil pan and inspecting the rod and main bearings. If the bearings are badly worn, damaged or loose, replacing the bearings may buy you some time. But if the bearings are badly worn or damaged, the crankshaft will probably have to be resurfaced - which means a complete engine overhaul or replacing the engine is the vehicle is worth the expense.

ENGINE PINGS OR KNOCKS WHEN ACCELERATING
The cause here may be Spark Knock (Detonation) caused by an inoperative EGR valve, overadvanced ignition timing, engine overheating, carbon buildup in the combustion chambers, or low octane fuel.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

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1 Answer

ADJUSTING VALVE CLEARANCE ON DODGE 318 ENGINE


There is no valve adjustment on that engine. Your rocker arms are on a single shaft that us bolted to the head. The lifters are hydraulic and will take up any normal slack unless there is damage to the cam, lifter, push rod or rocker.

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Overhead valves making noise like they need ajusting


Valve Lash ADJUSTMENT 1.6L Engines NOTE: Measure valve clearance with the engine cold.
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Remove the valve cover.
  3. Set the engine to Top Dead Center (TDC) of the compression stroke for the cylinder to be adjusted.
  4. Check the valve clearance. The valve clearance specifications are as follows:
    • Intake valves: 0.005-0.007 inches (0.13-0.17mm)
    • Exhaust valves: 0.005-0.007 inches (0.13-0.17mm)
  5. After adjustment, tighten the locknuts to 11-14 ft. lbs. (15-19 Nm).
  6. Repeat for each valve to be adjusted.
1.8L, 2.0L and 2.5L Engines The 1.8L, 2.0L and 2.5L engines utilize automatic hydraulic lash adjusters to maintain proper valve lash at all times. Periodic valve lash inspection and adjustment is not necessary or possible. prev.gif next.gif

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Is it necessary to replace valve lifter or can you adjust lash to reduce clatter on dakota v-8


hydraulics lifters you must replace as they will wear out.

solid tappet lifters can just be adjusted for. Unless you have some custom old engine in yours I'd imagine yours is the first.

You might also try running some pennzoil or quaker state oil to reduce clatter. They're wax based and will often do wonders for semi-clogging the right areas while keeping the other places open. Great for hi mileage motors.

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2000 dodge caravan


The lifter isn't too expensive but the labor to change it will be pretty high. Is it just one? Have you tried different oil or anything yet?

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3.0l engine?non adjustable..if noisy,have seen faulty lifters do this..has oil been changed regularly?if so,if you isolate noise to front or rear of engine you remove valve cover and push down and pull up on each rocker arm..if you find movement up and down..replace these and change oil and filter..3.3/3.8 engines..non adjustable also..if noisy,you may a oil supply problem to rear bank of engine..a camshaft bearing turns in block cutting off oil supply

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1 Answer

Hearing a tapping noise from the lifters.


Have your oil pressure checked with a reliable mechanical gauge. If pressure is good, change oil and add a pint of marvel oil: it will help clean insides of lifters. if noise persists after a couple of weeks or gets worse, you will need to change lifter(s) check cam and rocker arm for wear.
Your rockers are shaft mounted and are not adjustable.
Hope this helped you and the problem does not turn out to be a serious one!
good luck

Mar 27, 2009 | 1998 Dodge Caravan

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