1991 s10 2.8 V6 2WD Manual Trans. oil pump troubleshooting.

Oil is pumped around the engine. If there is water in the oil, that too is pumped around the engine.
If the engine is water cooled, I would remove the head, if it is warped, have it skimmed and then refit with a new gasket.
If it is air cooled, condensation is common. Replace the oil and any filter.

from sitting so long moisture probably had made a mess of internal parts of engine or previous owner cause damage causing [lifter to collapse-can have a bent push rod-spun or burnt a bearing ,poor oil service whee oil s clogging return to pan etc] if ticking problem most likely in head area if klunking possible crank bearing problem either way will have to overhaul engine

2006 Mazda 3


Applies to 2006 Mazda Mazda3:
Available engines
4 Cylinders 2.0L MFI DOHC
4 Cylinders 2.3L MFI DOHC


Could be a number of things - you're going to end up checking the entire car.

Off the top of my head:
a) exhaust component has rusted loose (usually catalytic converter heat shield). Any loose exhaust component (hanger/muffler, etc.) will vibrate at idle.
b) glove compartment door - loose hinge
c) motor mount - rubber part of metal/rubber mount vibrates loose & falls out.
d) transmission mount - ditto.

The Maintenance manual for your car says:

Clicking noise at idle or driving
--------------------------------------------
1 Inspect Main (Crankshaft) Bearing - Excessive Bearing Clearance.
1 Inspect Rod Bearing - Incorrect Rod or Main Bearing Clearances.
2 Inspect Rocker Arm - Worn or Incorrectly Adjusted Rocker Arm(s).
3 Inspect Piston Ring Set - Worn or Broken Piston Rings.
4 Inspect Piston - Worn, Damaged, or Faulty Piston.
5 Inspect Fuel Line Assembly - Fuel Line Leaking.
6 Inspect Hose Clamp - Loose or Missing Fuel Line Clamps.

Tapping noise at idle
------------------------------
1 Inspect Valve Lifter - Insufficient Oil Supply.
2 Inspect Fan Blade - Broken, Missing, or Faulty Fan Blade(s).
3 Inspect Oil Pump Screen - Clogged Oil Pump Screen.
4 Inspect Oil Pump Drive Gear - Damaged or Faulty Oil Pump Drive Gear.
5 Inspect Exhaust Valve(s) - Burned, Worn, or Sticking Exhaust Valves.
6 Inspect Oil(Crankcase)Capacity - Lifters Need Additional Lubrication.
7 Inspect Oil Filler Cap - Oil Filler Cap Damaged or Missing.
8 Inspect Oil Pump - Damaged or Faulty Oil Pump.
9 Inspect Oil Filter - Old or Clogged Oil Filter.
10 Inspect Oil FLow Check Valve - Damaged or Faulty Oil FLow Check Valve Caused Loss of Oil Pressure.

Vibration while Accelerating
-----------------------------------------
1 Inspect CV Half-Shaft (Remanufactured) CCT - Worn or Damaged CV Half-Shaft.

vibration while braking
--------------------------------
1 Inspect Brake Rotor - Warped or Uneven Brake Rotor Surface.

Vibration while driving - entire vehicle
-----------------------------------------------------
1 Inspect Brake Rotor Specs - Warped or Uneven Brake Rotor Surface.
2 Inspect Ball Joint-Lower - Worn, Damaged, or Faulty Ball Joint.
3 Inspect Ball Joint-UPPER - Worn, Damaged, or Faulty Ball Joint.
3 Inspect Wheel Bearing-Front - Worn, Dry or Damaged Wheel Bearing.
5 Inspect Tie Rod End - Worn or Damaged Tie Rod Ends.
6 Inspect Wheel Bearing-Rear - Worn, Dry or Damaged Wheel Bearing.
7 Inspect Wheel Hub Bearing - Worn, Dry or Damaged Wheel Hub Bearing.

Vibration in rear axle area while driving
-----------------------------------------
1 Inspect U-Joint - Loose, Worn, or Damaged U-Joint.
2 Inspect Driveshaft - Bent, Loose or Unbalanced Driveshaft.
4 Inspect Differential Drive Pinion - Worn, Damaged or Broken Pinion Teeth.
4 Inspect Wheel Bearing-Rear - Worn, Dry or Damaged Wheel Bearing.
5 Inspect Pinion Bearing - Worn or Damaged Pinion Bearings or Yolk Shaft.


Vibration in steering wheel while driving
---------------------------------------------------------
1 Inspect Wheel Bearing-Rear - Worn, Dry or Damaged Wheel Bearing.

Vibration in tire/wheel area while driving
------------------------------------------
1 Inspect Wheel Bearing-Front - Incorrectly Tightened or Installed Wheel Bearing.

Vibration under vehicle while driving
---------------------------------------------------
1 Inspect U-Joint - Loose, Worn, or Damaged U-Joint.
2 Inspect Muffler - Damaged or Burned Out Muffler.

Vibration in rear wheeel area while driving
------------------------------------------------------------
1 Inspect Wheel Bearing-Rear - Worn, Dry or Damaged Wheel Bearing.

Hi,
are you serious? Aside from that question. If there are rocker arms missing it could affect the oil pressure. Are the oil feed holes in the area of each missing rocker plugged off?

Perhaps I had better back-track here. If the oil lube system has no restrictions in it then there will be minimal oil pressure developed. The oil pump will be pumping oil to the lower end of the engine and that will be where oil press if any will be developed.

The rocker area has drillings which restrict the oil delivery from the pump, however, the rocker arms themselves offer resistance to the oil supply and the oil must have enough flow and pressure to form a circle of oil within the rocker arm and thus keep it clear of the shaft. The oil flow goes through the rocker arm, and down over the valves and pushrods,(if fitted) and drops back down into the oil pan. Different set ups can be used, but that's a basic configuration.

The engine lubrication is designed with certain resistances, and they in turn affect the flow of oil and the pressure developed by the pump.

Good luck.

to to a higher grade of fuel it might just stop pinging

WELL IF OIL NOT PUMPING AT ROCKER ARMS.IF HEADS BEEN REMOVED YOU HAVE TO ADJUST VALVE LASH AT ROCKER ARM AND PUSHROD TO THE LIFTER BEFORE IT PUMP OIL.IF ENGINE HEADS HAS NOT BEEN REMOVED.OIL NOT PUMPING.POSSIBLE CAUSE RESTRICTED OIL PASSAGES OR WORN OUT VALVE LIFTERS AND CAMSHAFT LOBES.FAULTY OIL PUMP REGULATOR OR WEAK OIL PUMP.

FIRST CHECK OIL PRESSURE IT SHOULD BE 30 - 80 PSI AT 3000 RPM.IF NOT YOUR OIL PUMP PRESSURE REGULATOR FAULTY.IF ALL IS GOOD OIL + FILTER BEEN CHANGED.POSSIBLE CAUSE TO NO OIL FLOW TO THE ROCKER ARMS COULD BE PLUGGED OIL PASSAGES IN ENGINE BLOCK.SLUDGE BUILD UP IN OIL PAN CAUSING POOR OIL PICK UP.OR WORN DIRTY LIFTERS WONT PUMP OIL.

If it's knocking,It's not a rocker arm (They tick) Knock are usually rod or rod bearings or a bad balance shaft and you can't adjust those.

are the pushrods hollow or solid

before trying too much the lifters will sometimes bleed off some of the prime they have. first try putting in a pint of marvel mystery oil. if that doesn't fix it run an oil pressure test to see if you need a new pump or new lifters