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Lifter noise 91 mazda navaho 4.0 V6 high miles valve adjustment

How do you adjust the valve lash on the 91 Mazda Navajo 4.0 v6. The vehicle has 200K miles but runs well. The engine has what sounds like lifter noise.

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  • 11 Answers

SOURCE: Mazda MPV V6 engine noise

My strong guess without looking at it would be a cracked exhaust manifold, when it gets hot the metal expands an it doesn't leak.

Posted on Dec 18, 2008

michigan man
  • 3533 Answers

SOURCE: change rear brake pads on mazda 323f 2l v6 1997

try autozone.com to see if they have your car listed for diagrams pictures and step by step instructions if your car is not listed then try your local library they have all the car manuals and even copy them for you

Posted on Mar 21, 2009

  • 164 Answers

SOURCE: What size is the spark plug gap on a Mazda MX3 V6 1840cc please?

Buy hanes book ore look up on google
last but not least your dealer will have the information.

Posted on Jul 21, 2009

  • 1 Answer

SOURCE: 1997 Mazda MPV, 3-Ltr. V6, destroys Timing Belt

i need help install a timebelt in a mazda mpv? please help me out

Posted on Aug 05, 2009

Hrnsly
  • 154 Answers

SOURCE: 2002 Mazda Tribute V6 difficult to start.

IT SOUNDS LIKE THE IAC VALE OR IDLE AIR CONTROL VALVE IS BAD, WHAT YOU CAN DO IS TAP ON THE VALVE. IT IS LOCATED ON THE INTAKE RIGHT BEHIND THE THROTTLE BODY, JUST TAP ON THE SILVER PART WITH THE BACK OF A SCREW DRIVER A COUPLE OF TIMES. THIS SHOULD UNSTICK THE VALVE AND YOUR TRIBUTE SHOULD RUN. THEN IT IS JUST A MATTER OF REPLACING THE VALVE. YOU CAN GET THEM FROM ANY AUTO PARTS HOUSE.

Posted on Aug 18, 2009

  • 7353 Answers

SOURCE: can i replace my mazda 6 2.3 v4 for a 3.0 v6

Not unless you have the whole other complete car to swap parts from. starting with the wiring harness.

Posted on Apr 23, 2010

Testimonial: "Tanx for the wiring harness info.. i didnt know great...."

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2 Answers

I want to know how to fix the lufters on a 2011jeep cheeraki


LIFT ONLY THE VALVE COVERS AND CHECK IF THE LIFTERS ARE TIGHT, IF THERE IS TOO MUCH PLAY ON ONE LIFTER, YOU MAY HAVE A BENT VALVE.

Jun 17, 2015 | Jeep Cherokee Cars & Trucks

1 Answer

Is there any solution, for hydrolic lifters?


Have you adjusted your valve lash? This motor is an overhead cam motor and requires a rocker adjustment.

Lots of info here:
http://www.mazdabg.com/ftp-uploads/Mazda/323/AdjustmentData/Mazda32318i16VBP.pdf

Jun 18, 2013 | 1992 Mazda 323

1 Answer

A clicking sound is coming from my mazda b3000 engine when it is running


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.

Aug 17, 2012 | Mazda B3000 Cars & Trucks

1 Answer

2004 tribute engine making ticking sounds


Hi there:
First I suggest 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.

Jun 20, 2012 | Mazda Tribute Cars & Trucks

1 Answer

Top of the engine is ticking. friend told me it could be a valve that is clogged or stuck open and thats its not a huge problem but it might be mixing gas and oil. to me that sounds like a problme....


It sounds like hydraulic lifter noise. The lifters open and shut the valves and can be helped by using a good synthetic oil and frequent oil changes. Lash is the clearance between the valves and lifters.

Mar 22, 2011 | 1993 Isuzu Trooper

3 Answers

My 94 Suburu Loyale Started doing a steady ticking noise, What could it be?


Hi, it is likely you have a bad valve lash adjuster. Pretty common in these cars, as I helped another customer with the same problem. The labor to fix this was a lot, because the engine had to be disassembled. Repair procedures are available if you are inclined to do the work yourself.
Thanks for using FixYa.

Jan 13, 2011 | 1991 Subaru Loyale

2 Answers

What is the current correct procedure for setting valve lash on a GM 2.8L / 3.1L V6 ? I understand the procedure in the service manual and the Haynes manual has been updated to a new procedure. An engine...


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

Mar 02, 2010 | 1988 Pontiac Fiero

1 Answer

Tapping Noise at idle 1994 Dodge Dakota 3.9L 5 speed manual


for v-6....3.9L

These engines are equipped with hydraulic lash adjusters designed to maintain zero lash at all times.

for 4 cyl...2.5 sohc
Valve Lash
Non-adjustable Dry Lash 0.024-0.060 inch.

for v8,...5.2---These engines use hydraulic lifters. No provision for adjustment is provide

Jun 04, 2009 | 1993 Mazda RX-7

3 Answers

Mazda MPV expert needed.


big end or main bearing.

Dec 16, 2008 | 1995 Mazda MPV

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