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Engine just been overhauled, head gasket on correct,oil pump suction very good,all components very well cleaned before reassembly. why is the oil circulation to the head seem to be less than normal.

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Were the oil passages cleaned properly ?

Posted on Dec 06, 2016

Testimonial: "Hi Ray many thanks. Yes very thorough,just removed the oil filter housing and cleaned the oil pressure valves,inlet & out. will re-assemble and see if any good. If you have any other possible suggestion they will be gladly looked into.Thanks"

  • ray gallant Dec 06, 2016

    the good rebuilder here has a dip tank that cleans all of the internal passages. GOOD LUCK with it

  • ray gallant Dec 06, 2016

    My nephew put a high volume oil pump in my 92 GMC a few years back , it did a lot of good for pressure .



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Oil leak

Hi and welcome to FixYa!

Can you locate where the leak is coming from? As a first course of action I strongly suggest that you buy an overhauling gasket. The overhauling gasket covers every component that needs gasket. From valve cover to head and even on transmission oil seals.

Once you locate the leak you can start removing the parts that will require gasket replacement.

Hope this helps and thank you for using FixYa! Have a good one!

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How to replace the water pump on a 1992 geo tracker 1.6 liter engine

During these procedures, identify all components removed from the engine so that they may be reinstalled in their original positions. If discarding the old components so that new components can be installed, identifying the old items is not necessary.

1.3L and 1.6L Engines

  1. Remove the timing belt cover, timing belt, tensioner, plate and spring.
  2. Remove the water pump mounting bolts.
  3. Remove the one (1.6L MFI engines) or two (1.3L and 1.6L TFI engines) small rubber seals from between the water pump and the oil pump, and the water pump and the cylinder head.
  4. If necessary for clearance, remove the oil level dipstick tube retaining bolt from the engine block and the alternator adjusting brace.

Fig. 1: Exploded view of the water pump mounting

WARNING Do NOT use a prybar between the water pump housing and the engine block to separate the two components; this can cause scratches and/or gouges, which can prevent proper sealing.
  1. Pull the water pump off of the engine block. If the water pump is difficult to remove from the engine block, use a soft-faced mallet to tap the water pump housing until it loosens.
Do not disassemble the water pump; if the water pump is damaged or defective, the entire unit is replaced.
  1. Thoroughly clean the water pump gasket mating surfaces of old gasket material and corrosion.
To install:
  1. Along with a new gasket, install the water pump on the engine block. Tighten the water pump mounting bolts to 88-115 inch lbs. (10-13 Nm).
  2. On 1.3L and TFI 1.6L engines, install two new rubber seals: one between the water pump and oil pump, and the other between the water pump and the cylinder head. The MFI 1.6L engines only use one rubber seal, located between the water and oil pumps.
  1. If removed, install the alternator adjusting brace and the oil level dipstick retaining bolt.
  2. Install the timing belt, tensioner, plate, spring and cover.

Hope helps (remember comment and rated this).

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1999 chevy suburban 2wd 1500 v8 driving

I suspect you have had an oil pump failure. To get at the rotory gear oil pump you will have to drop the oil pan. After you take the pan off, ( having drained the oil the oil pump is what the oil pick up line leads into. That pick up assy. is a round shaped disc with a screen inside it. Clean the screen first then the oil pump. Install new oil pan gasket on reassembly. Hope that helps you. Please let me know.

Hopefully the engine was not damaged when the pump broke. If it was you may need a complete engine rebuild, MAYBE.

Jan 26, 2010 | 2003 Chevrolet Suburban 1500

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Water is mixed with oil.

Fix this ASAP, Coolant in oil will ruin bearings. Have a shop check it ASAP. I would check the intake manifold gaskets first.

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Oil appearing in radiator, 4afe engine, is there awater gallery behind oil pump? checked head gasket looked fine

Still can be a cracked head gasket. Unless you are creating to much pressure in your engine. Just because you do not see any oil leaks does not mean that the head gasket could not be cracked

Jun 03, 2009 | 1993 Toyota Corolla

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1992 galant 2.0L, car runs for approx. 30-45mins. then stalls out, and runs on one or two cylinders. We recently changed distributor cap and rotor, and ignition coil. no luck yet! battery is nice and clean...

sounds to me that the rings on the piston are worn out with the engine warmed up the cylinder expands a little causing blow by take the oil cap off and see if there is excessive blow by

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1996 honda prelude oil leak

did you check the steering pump, AC compression pump, etc or other engine components ? it could be something other than the engine.

Nov 18, 2008 | 1996 Honda Prelude

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Daihatsu charade 1.3 1996 model. I bought the above car 3 weeks ago from a car dealer in WA. A week later the radiator overheated and has done so twice since. The thermostat has been changed twice but has...


In its simplest terms, the head gasket is the spacer/insulator between the cylinder head and the engine block. When the piston (in the block) moves upward to compress the air/fuel mixture (against the cylinder head), tremendous pressure develops inside the combustion chamber. The pressure will find any easy means of escape to expand. If the gasket is defective, the pressure will pass through that gasket and enter the water jackets (where the collant flows through). The pressure/air bubbles will ride the coolant flow and eventually end up inside the radiator and would then be visible as you have posted.

Incidentally, the gasket may be OK but the cylinder head could be warped and the same fault would also be exhibited. This is especially more so on aluminum heads.

Both the gasket problem and/or the warped cylinder head could have resulted from a prior overheating problem.

Corrective procedure on the air bubbles would require top overhauling wherein only the cylnder head is removed. Of course once removed, your mechanic would be able to inspect the pistons and its sleeves and could decide if a general overhaul is required or stick to the cylinder head work. A top overhaul also requires cylinder head gasket replacement.

Unto the overheating problem, you may want to check the water pump, thermostat, fan, fan relay and fan clutch. It may also be to your added advantage if you would have the radiator flushed/cleaned as well as the water jackets. Some mechanics especially in warmer regions opt to completely remove the thermostat and permanently wire the fan to always be on.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Jul 27, 2008 | Daihatsu Charade Cars & Trucks

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