Question about 1990 Aprilia AF1 125 Futura

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I have found a small hole about 5mm just above the engine mount in front of the oil pump. and when running , coolant trickles out . is this a major problem!!!! . i hope you can assist thanks . WOB2k

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Hi, Tanita for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix/test or parts inquiry. If necessary transport your vehicle to the dealer or shop and have a professional technician take it for a test drive, if it is in running condition, and give you a written estimate of repairs and answer any specific questions you may have about your issue. For more information about your issue please visit the website below. Good luck and have a nice day. 841 af1 rs manual zip 805 KB

Btw, I’m available to help over the phone in case u need at

Posted on Oct 26, 2015


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How to change automatic oiler on stihl polesaw

99% of the time, the pump fails to pump because of wood dust or small chips that make their way past the filter and plug up the inlet hole on the side of the pump. very common on that model.
1) drain the oil tank, remove the four screws holding it to the gear case
2) remove the pickup filter and rubber cover plug on the bottom of the gear case. the pump is under the filter.
3) using a 5mm bolt (the bolt must be long enough to be threaded into the end of the pump, and then up thru the socket or pipe, and then install a flat washer and finally a 5m nut on top), flat washer, 12 or 13mm deep socket or any other type of pipe or bushing that will allow the pump to be pulled up and out of the housing.
** be very careful to remember the alignment of the inlet slot on the pump position to the gear case.
The slot on the pump is the inlet(it faces towards the back of the gearcase), the outlet hole (it faces forward) lines up with the drilled oil outlet passage on the gear case.
4) there will be a large clog on the slot and inlet hole.
with light oil or pressurized penetrating oil clean the debris from the slot and also into the inlet hole while rotating the pump gear with your fingers, you will find that the oil starts to come out the other side of the pump. time to reinsert
5) with the 5mm bolt installed, use a very small hammer to tap the pump into the housing (align the holes as mentioned above) until it seats. Reinstall the filter, rubber plug, cover and fastening screws.
6) you are ready to get back to work.

I’m happy to assist further over the phone at

Jan 22, 2017 | Stihl Garden

2 Answers

What would cause my cars engine to freeze up and no longer run

No oil or oil pressure , also check all belt driven components like alternator or a/c compressor or power steering pump and water pump one of listed items could seize and cause your engine not to turn over aka crank , not much info given on make and model of vehicle

Apr 07, 2016 | Cars & Trucks

1 Answer


If antifreeze is leaking out of your front main oil seal you would have to have the engine full of coolant which would mean a major gasket leak. I submit that coolant is running down the front side of the engine and then dripping off the oil seal. Probably from the water pump. Pressurize the cooling system to determine the exact cause of the fluid leak

Nov 03, 2013 | Chevrolet Vehicle Parts & Accessories

1 Answer

Coolant leak into Timing chain area on my 2002 Grand Vitara V6 engine.

vehicles that have aluminium housings are subject to corrosion making holes and allowing the coolant to escape in your case into the oil. I would be looking for corrosion holes behind the water pump impellor as the turbulance in this area helps the corrosion . You will have to replace the front housing if it is . It is most important to ensure that the coolant is at the correct concentration to prevent this

Jan 27, 2013 | Cars & Trucks

3 Answers

I smell coolant and I see a little in the front above the water pump..where would the coolant be leaking from. Also my check engine light keep coming on. Would this problem that I am having with the...

On the under side of the water pump there is a hole called a weep hole its there to let you know that the seal is leaking on the pump and will need to be replaced soon so you don't have a major failer on the highway and damage your engine

Dec 12, 2010 | 2002 Chevrolet TrailBlazer

1 Answer

How to replace water pump

1. Drain coolant from engine.
2. Remove water pump drain plug. It is located on the front of the block just above the A/C compressor and about 2 o'clock of the crankshaft pulley.
3. Place a floor jack under engine (be sure to use a piece of wood in between jack and oil pan). Remove the right side engine mounting, mounting bracket and nuts.
4. Remove the drive belts and idler pulley bracket.
5. Remove the two black covers on the front of the engine. The one towards the radiator will have the water pump behind it and the one towards the thermo barrier will have the timing chain tenioner behind it.
6. Push in the tensioner sleeve, apply a stopper pin so it does not return ( a paper clip will work ).
7. Remove the tensioner (2 - 10mm bolts )
8. Remove the 3 water pump bolts.
9. Turn the crankshaft pulley approximately 20 degrees backwards to put slack in the chain to give clearance for the water pump.
10. Install the two M8 bolts into the threaded holes in the water pump (the upper hole and the lower hole)
11. Tighten the M8 bolts by turning half turn alternately until the water pump becomes loose. Lift up water pump and remove it. Make sure you move the timing chain away from the pump to remove it. Do not worry about engine timing. It will not effect it at all. The water pump is not part of timing the engine, nor will the chain losse contact with the crankshaft gear.
12. Make sure to use two new "O" rings on the water pump.
13. Install water pump and tighten bolts (63.4 - 85.1 inch pounds)
14. Return the crankshaft pulley to its original position by turning it 20 degrees forward.
15. Install timing chain tensioner, then remove the stopper pin ( paper clip)
16. Place sealer on the black covers and reinstall.
17. Reinstall engine mounting.
18. Reinstall drive belts.
19. Fill with new coolant.
20. Start engine and check for leaks. (Engine will be noise at first until the tensioner fills with engine oil. This is normal.)

Dec 10, 2009 | 1996 Nissan Maxima

1 Answer

I need to know where the water pump is located?Is it on the side where the pulleys are and above the oil pan?

Removal & Installation

To Remove:

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Drain cooling system. NOTE: The water pump is driven by the timing belt.
  3. Remove or disconnect the following:
    • Engine timing belt
    • Water pump mounting bolts and note position of longer bolt
    • Water pump body from engine
To Install:
NOTE: It is normal for the water pump to leak a small amount of coolant from the weep hole. Do not replace the water pump if this condition exists.
  1. Clean O-ring surfaces on pump and cover.
  2. Apply Mopar Dielectric Grease or the equivalent silicone grease to the O-ring.
  3. Install or connect the following:
    • New O-ring on water pump
    • Water pump to engine.
    • Mounting bolts
      1. Torque to 105 inch lbs. (12 Nm)
    • Timing belt
  4. Fill cooling system.

Jun 23, 2009 | 2005 Chrysler Pacifica

1 Answer

Running Hot

This may be a bad water pump. There is a small hole (called a 'weep hole') at the center of the shaft. When the pump goes bad, the coolant will leak out here. If you can get a look at that area, it should be obvious where the leak is coming from. A small mirror will help you inspect the area. You can pick up a small mirror with an extending handle for this at a parts store. Let me know what you find.

Mar 25, 2009 | 1991 Lexus LS 400

1 Answer

Coolant leak on 2004 grand cherokee 4.0

might be the thermostat housing to as its right above the water pump. the best bet would be to pressure test the cooling system and inspect to see where its coming from

Jan 18, 2009 | 2004 Jeep Grand Cherokee

1 Answer

Where is the water pump on 93 geo prism, small engine

You're right. it could very well be your water pump, but I would suggest replacing your thermostat before trying to tackle replacing your water pump. However, if your thermostat turns out not to be the problem, I have enclosed step-by-step instructions for removal and re-installation of your water pump. Hope this proves to be helpful. Have a nice evening!

Geo Prism Water Pump Removal/Installation
  1. Disconnect the negative battery cable. Drain the engine coolant from the radiator.
  2. Remove all drive belts.
  3. Support the engine using suitable equipment. Place a wooden block between the jack and engine. Remove the right engine mount and insulator.
  4. Remove the No. 3 (upper) and No. 2 (middle) timing belt covers.
  5. If equipped with power steering, raise and safely support the vehicle. Remove the front transaxle mount. Lower the vehicle, remove the cooling fan assembly.
  6. Remove the mounting bolt for the dipstick tube; remove the tube and dipstick. Immediately plug the hole in the block to prevent fluid from contaminating the oil.
  7. Remove the electrical connector for the coolant temperature sending unit.
  8. Remove the 2 nuts securing the engine coolant pipe to the cylinder block.
  9. Loosen the hose clamp and remove the coolant inlet pipe from the vehicle.
  10. Loosen the hose clamp and remove the coolant inlet hose from the water pump.
  11. If equipped with power steering, raise the engine and remove the mounting bolts for the water pump. Remove the water pump and O-ring from the vehicle.
To install:
  1. Install a NEW O-ring to the vehicle. Install the water pump and torque the retaining bolts EVENLY to 11 ft. lbs.
  2. Lower the engine if necessary, and connect the coolant hose to the water pump. Reconnect the engine coolant inlet pipe to the vehicle and secure to hose with clamp and secure to block with 2 nuts. Tighten the engine coolant inlet pipe nuts to 11 ft. lbs.
  3. Connect the electrical connector for the coolant temperature sending unit.
  4. Install the oil guide tube and torque the retaining bolt to 84 inch lbs. Install the oil level indicator to the guide tube.
  5. Install the radiator fan assembly, if necessary.
  6. If equipped with power steering, raise and safely support the vehicle. Install the front transaxle mount. Torque the through bolt nut to 64 ft. lbs. and 2 mount nuts to 47 ft. lbs.
  7. Lower the vehicle (if necessary) and install the No. 3 (upper) and No. 2 (middle) timing belt covers.
  8. Support the engine using suitable equipment. Install the right engine mount and insulator.
  9. Remove all engine lifting equipment.
  10. Install and adjust all drive belts.
  11. Reconnect the negative battery cable. Fill the cooling system. Start the engine and check for coolant leaks.

Nov 23, 2008 | 1993 Geo Prizm

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