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Mower engine suddenly races uncontrolably

Removed inlet manifold in order to replace fuel pipe and connect to carb. Engine now runs but suddenly surges madly. Unable to contol by throttle and only option is to shut down. Help please !!

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Ok for one need to know what type and size and year of engine? then we can help fig out what the problem can be

Posted on Apr 25, 2015

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1 Answer

2003 Ford Explorer 4.0L engine melts intake manifold


replace the faulty EGR system
it is letting hot exhaust gases into the inlet system on an uncontrolled basis

Jun 20, 2017 | Ford Explorer Cars & Trucks

1 Answer

1995 isuzu pick up runs good but won't start after it runs for awhile


Does The Inlet Manifold Under The Carberetor Have Water Hoses Going To IT,If Yes? This Water Is To Keep The Carberetor Cool The Pipes And The Manifold Could Be Blocked Stopping The Water From Flowing And Allowing The Carb To Get Hot!
When You Stop The Fuel Evaporates Causing It Not To Start
Remove A Piupe When Cold Start Engine Does Water Flow Out,
If Yes Or No Re Fit Hose Then Remove Other Hose If Yes Then The Manifold And Or Pipes Are Blocked.
Remove Manifold Clear Out Blockage ,Replace Hoses Re Fill Radiator With Anti Freeze Solution ,Problem Should Be Solved
Hope This Helps

Mar 18, 2013 | 1995 Isuzu Pickup

2 Answers

Where is thermosts located and how do i replace it?


2.2L Engine
  1. Disconnect the negative battery cable.
  2. Properly drain and recover the coolant until the level is below the thermostat.
  3. Unfasten the coolant outlet-to-inlet manifold attaching bolt and nut, then remove the outlet.
  4. Remove the thermostat. Clean the inlet manifold and outlet mating surfaces.
To install:
  1. Install a new O-ring onto the thermostat
  2. Place the thermostat in the inlet manifold.
  3. Attach the coolant outlet to the inlet manifold, using the bolt and nut. Tighten to 89 inch lbs. (10 Nm).
  4. Refill the engine cooling system.
  5. Connect the negative battery cable, then start the engine and check for coolant leaks.

zjlimited_1248.jpg

Fig. 1: The thermostat is located in the lower radiator hose on the 2.2L engine (click image for zoom)



2.3L and 2.4L Engines
(see Figure 7)

When adding coolant, it is important that you use GM Goodwrench DEX-COOL® (orange colored, silicate free) coolant meeting GM specifications. On these vehicles, if silicated coolant is added to the system, premature engine, heater core or radiator corrosion may result. In addition, the engine coolant will require change sooner; at 30,000 milee or 24 months.
  1. Disconnect the negative battery cable.
  2. Properly drain and recover the coolant to a level below the thermostat.
  3. Unfasten the cover-to-outlet pipe bolt, which is accessible through the exhaust manifold runners.
  4. Raise and safely support the vehicle.
  5. Disconnect the radiator and heater hoses from the outlet pipe.
  6. Unfasten the outlet pipe-to-oil pan bolt and the cover-to-outlet pipe bolts.
  7. Remove the thermostat, then clean the old gasket material from the mating surfaces.

zjlimited_1249.jpg

Fig. 7: Thermostat removal and installation-2.3L and 2.4L engines

To install:
  1. Position the thermostat in ite correct location, then install the cover-to-outlet pipe bolt. Tighten the bolt to 10 ft. lbs. (14 Nm).
  2. Install the outlet pipe-to-oil pan bolt. Tighten the pipe-to-oil pan bolt to 19 ft. lbs. (26 Nm) and the pipe-to-transaxle bolt to 40 ft. lbs. (54 Nm).
  3. Connect the radiator and heater hoses to the outlet pipe.
  4. Carefully lower the vehicle.
  5. Install the cover-to-outlet pipe bolt through the exhaust manifold runner.
  6. Properly fill the cooling system, then connect the negative battery cable.

Hope helps (remember to rate and comment this answer).

May 14, 2011 | 1998 Pontiac Sunfire

1 Answer

Intakegasket for grandam gt


Exactly what is the wrong? Need the part? Need to know torque adjust or porcedure to take off?

For
1994 Pontiac Grand Am 3.1L SFI OHV 6cyl check this procedure for Intake Manifold...
(see Figure 14)
The 3.1L engine is equipped with upper and lower intake manifolds. The upper intake manifold is also known as the intake manifold plenum.

CAUTION The fuel system is under pressure and must be properly relieved before disconnecting the fuel lines. Failure to properly relieve the fuel system pressure can lead to personal injury and component damage.
  1. Relieve the fuel system pressure.
  2. Disconnect the negative battery cable.
  3. Remove top half of the air cleaner assembly and throttle body duct.
  4. Drain and recycle the engine coolant.
  5. Disconnect the EGR pipe from exhaust manifold.
  6. Remove the serpentine belt.
  7. Remove the brake vacuum pipe at the intake plenum.
  8. Disconnect the control cables from the throttle body and intake plenum mounting bracket.
  9. Remove the power steering lines at the alternator bracket.
  10. Remove the alternator.
  11. Label and disconnect the ignition wires from the spark plugs and wire retainers on the intake plenum.
  12. Remove the ignition assembly and the EVAP canister purge solenoid together.
zjlimited_601.jpg

Fig. 14: View of the intake manifold and related components

  1. Disconnect the upper engine wiring harness connectors at the following components:
    Throttle Position Sensor (TPS) Idle Air Control (IAC) Fuel Injectors Coolant temperature sensor Manifold Absolute Pressure (MAP) sensor Camshaft Position (CMP) sensor
  2. Tag and disconnect the vacuum lines from the following components:
    Vacuum modulator Fuel pressure regulator PCV valve
  3. Disconnect the MAP sensor from upper intake manifold.
  4. Remove the upper intake plenum mounting bolts and lift off the plenum.
  5. Disconnect the fuel lines from the fuel rail and bracket.
  6. Install engine support fixture special tool J 28467-A or an equivalent.
  7. Remove the right side engine mount.
  8. Remove the power steering mounting bolts and support the pump out of the way without disconnecting the power steering lines.
  9. Disconnect the coolant inlet pipe from the outlet housing.
  10. Remove the coolant bypass hose from the water pump and the cylinder head.
  11. Disconnect the upper radiator hose at thermostat housing.
  12. Remove the thermostat housing.
  13. Remove both rocker arm covers.
  14. Remove the lower intake manifold bolts. Make sure the washers on the four center bolts are installed in their original locations.
When removing the valve train components they should be kept in order for installation the original locations.
  1. Remove the rocker arm retaining nuts or bolts and extract the rocker arms and pushrods.
  2. Remove the intake manifold from the engine. Remove and discard the gasket.
  3. Using a suitable scraper, clean gasket material from all mating surfaces. Remove all excess RTV sealant from front and rear ridges of cylinder block
To install:
  1. Place a 0.12 inch (3mm) bead of RTV, on each ridge, where the front and rear of the intake manifold contact the block.
  2. Using a new gasket, place the intake manifold on the engine.
  3. Install the pushrods in their original locations. Coat the pushrods with prelube.
The intake pushrods are marked yellow (5 3 /4 inch long) and the exhaust are green (6 inches long). Make sure the pushrods are properly seated in the valve lifters and rocker arms.
  1. Position the rocker arms in there original locations and tighten to specifications. Refer to the procedure earlier in this section.
  2. Install lower the intake manifold attaching bolts. Apply sealant 12345739 (or equivalent thread locking compound) to the threads of bolts. Tighten the vertical bolts first then the diagonal bolts to 115 inch lbs. (13 Nm).
  3. Install the front rocker arm cover.
  4. Install the thermostat housing.
  5. Connect the upper radiator hose to the thermostat housing.
  6. Fasten the coolant inlet pipe to thermostat housing.
  7. Connect coolant bypass pipe at the water pump and cylinder head.
  8. Install the power steering pump in the mounting bracket.
  9. Loosely install the serpentine belt.
  10. Connect the right side engine mount.
  11. Remove the special engine support tool.
  12. Fasten the fuel lines to fuel rail and bracket.
  13. Install the upper intake manifold and tighten the mounting bolts to 18 ft. lbs. (25 Nm).
  14. Install the MAP sensor.
  15. Connect the upper engine wiring harness connectors to the related components removed earlier.
  16. Connect the vacuum lines to the PCV, vacuum modulator and fuel pressure regulator.
  17. Install the EVAP canister purge solenoid and ignition assembly.
  18. Install the alternator assembly.
  19. Connect the power steering line to the alternator bracket.
  20. Install the serpentine belt.
  21. Connect the spark plug wires to the spark plugs and intake plenum wire retainer.
  22. Install the EGR pipe to the exhaust manifold.
  23. Attach the control cables to the throttle body lever and upper intake plenum mounting bracket.
  24. Install air intake assembly and top half of the air cleaner assembly.
  25. Install the brake vacuum pipe.
  26. Fill the cooling system.
  27. Connect the negative battery cable, then start the vehicle and verify that there are no leaks.

For PARTS REPLACEMENT check in THIS LINK: carpartswholesale.com

Hope helps.

Feb 01, 2011 | 1994 Pontiac Grand Am

1 Answer

Location of thermostat on 2002 olds alero 2.2


Thermostat Removal & Installation 2.2L Engine To Remove:
  1. Remove the exhaust manifold. If equipped with an automatic transmission.
  2. Drain the cooling system.
  3. Remove or disconnect the following: chevy_cav_02-04_tstat.gif

    • Thermostat housing to water pump feed pipe bolts. chevy_cav_02-04_feedpipe.gif

    • Thermostat housing to water pump feed pipe.
    • Thermostat.
To Install:
  1. Install or connect the following:
    • Thermostat.
    • Thermostat housing to water pump feed pipe.
    • Thermostat housing to water pump feed pipe bolt.
      1. Tighten bolt to 89 in lbs (10 Nm).
    • Exhaust manifold if equipped with an automatic transmission.
  2. Fill the cooling system.
2.4L Engine To Remove:
Thermostat assembly 2.4L 87953024.gif

  1. Drain the cooling system.
  2. Remove the exhaust manifold heat shield.
  3. Remove the coolant inlet housing mounting bolts through the exhaust manifold.
  4. Raise and safely support the vehicle.
  5. Remove the coolant inlet housing stud from the oil pan.
  6. Remove wheel and tire assembly.
  7. Remove the engine splash shield.
  8. Remove the mounting bolts from the transaxle-to-engine block support. Remove the support.
  9. Remove the coolant housing pipe.
  10. Remove the thermostat.
  11. Clean the mating surfaces.
To Install:
  1. Install the thermostat.
  2. Install the coolant housing pipe.
  3. Install and secure the transaxle support-to-engine block mounting bolts.
  4. Install the engine splash shield.
  5. Install the wheel and tire assembly.
  6. Install the coolant inlet housing stud to the oil pan.
    • Tighten to 19 ft lb (26 Nm).
  7. Lower the vehicle.
  8. Install the coolant inlet housing bolts through the exhaust manifold.
    • Tighten the coolant inlet housing bolts to 10 ft lb (14 Nm).
  9. Install the exhaust manifold heat shield.
  10. Fill the cooling system.
  11. Inspect the system for leaks.
3.4L Engine To Remove:
  1. Drain the cooling system.
  2. Remove the air cleaner.
  3. Remove exhaust crossover pipe.
  4. Disconnect the surge tank line fitting from the coolant outlet.
  5. Remove the thermostat housing to intake manifold bolts.
  6. Remove the thermostat housing outlet and thermostat.
To Install:
  1. Install the thermostat and housing outlet.
  2. Install the thermostat housing bolts.
    • Tighten the thermostat housing bolts to 18 ft lb (25 Nm).
  3. Install exhaust crossover pipe.
  4. Connect the surge tank line fitting to the coolant outlet.
    • Tighten the fittings to 15 ft lb (21 Nm).
  5. Install the air cleaner.
  6. Fill the cooling system.
  7. Inspect the system for leaks
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Oct 14, 2010 | Oldsmobile Alero Cars & Trucks

1 Answer

I took my 2001 olds bravada to advance auto to have a service engine light checked they checked it and told me it was a secondary air intake malfunction code then they erased the code after that my car...


Too much air is entering the inlet manifold making the air/fuel mix too lean to ignite. Can you hear any suspect whistling or hissing from any of the pipes etc whilst the engine is turning over. Check every junction in the air ducting from the air filter box though to the throttle intake. There should be no disconnected pipes or holes. Likewise all the pipes and tubes that connect with the inlet manifold should have secure junctions, the pipes should be free of splits etc and the other ends of these pipes should also be secure to the devices to which they are attached. Be diligent in checking every bit. Two approaches that might make the leak detection quicker: 1) Disconnect the vacuum tubes (those that make connection to the inlet manifold) one at a time and in turn to block the now open pipe to the inlet manifold with your finger. Do this to each tube in turn whilst trying to start the engine, eventually you will find the faulty tube because the engine will start. 2) Spray your brake cleaner on the outside of the tubes one at a time. Eventually you will find the site of the leak as the car will surge in revs as it it sucks in the brake cleaner and ignites it. Finally check around the injector seats and also where the inlet manifold makes union with the cylinder head

Sep 02, 2010 | 2001 Oldsmobile Bravada

1 Answer

Uncontrolled revving on my 91 honda accord automatic It revs between 1000 and 3000 rpm in neutral and 1200-2500 in drive. Engine lite comes on sometimes. I have switched out the idle air control valve and...


sounds like you got an air leak in the inlet system you can find this by carefully spraying carb cleaner or similar around the inlet manifold vacuum pipes noting if there is a change in engine speed as you go,when you here a change in speed you will have found the area that the leak is in

Jul 09, 2010 | 1991 Honda Accord

1 Answer

Need to replace intake manifold how do you do this


Bonneville, LeSabre, Park Avenue 2000-2005 Intake Manifold - Removal & Installation

3.8L Engine
VIN 1 Engine
  1. Before servicing the vehicle, refer to the Precautions section.
  2. Relieve the fuel system pressure.
  3. Drain the cooling system.
  4. Remove or disconnect the following:
    Negative battery cable Supercharger Thermostat housing Exhaust Gas Recirculation (EGR) tube at the intake manifold Engine Control Temperature (ECT) sensor Intake manifold
To install:
  1. Install or connect the following:
    Intake manifold with new gaskets. Torque the bolts, working from the center out, to 11 ft. lbs. (15 Nm). ECT sensor connector EGR tube to the intake manifold Thermostat housing Supercharger Negative battery cable
  2. Refill and bleed the cooling system.
  3. Run the engine and check for leaks and proper engine operation.

VIN K Engine
  1. Before servicing the vehicle, refer to the Precautions section.
  2. Disconnect the negative battery cable.
  3. Drain the cooling system.
  4. Relieve the fuel system pressure.
  5. Remove or disconnect the following:
    Fuel injector sight shield Air inlet duct Spark plug wires from the right side Manifold Absolute Pressure (MAP) sensor Vacuum lines from the intake manifold Fuel lines Fuel injector electrical connectors Fuel regulator vacuum line Fuel rail from the intake manifold Exhaust Gas Recirculation (EGR) heat shield Throttle cable bracket from the cylinder head mounting bracket and the throttle body cables Throttle body support bracket Upper intake plenum and gasket Thermostat housing Electrical connector from the Engine Coolant Temperature (ECT) sensor Drive belt tensioner assembly EGR valve outlet pipe Lower intake manifold

    a5adffa.jpg
    Fig. Exploded view of the intake manifold and related components-3.8L (VIN K) engine
To install:


140d431.jpg
Fig. Upper intake manifold torque sequence-3.8L (VIN K) engine


4950e4f.jpg
Fig. Lower intake manifold torque sequence-3.8L (VIN K) engine
  1. Install or connect the following:
    Intake manifold using new manifold gaskets. Torque the bolts in sequence to 11 ft. lbs. (15 Nm); then, re-torque to 11 ft. lbs. (15 Nm). EGR valve outlet pipe Drive belt tensioner assembly. Torque the tensioner bolts to 37 ft. lbs. (50 Nm). Electrical connector to the ECT sensor Thermostat housing Upper intake plenum. Torque the intake plenum bolts to 88 inch. lbs. (10 Nm). Throttle body support bracket Throttle cable bracket to the cylinder head mounting bracket and the cables to the throttle body lever EGR heat shield Fuel rail. Torque the fuel rail bolts to 88 inch. lbs. (10 Nm). Fuel lines Fuel regulator vacuum line Fuel injector electrical connectors Vacuum lines to the intake manifold MAP sensor Spark plug wires Fuel injector sight shield and air inlet duct Negative battery cable
  2. Refill and bleed the cooling system.
  3. Run the engine and check for leaks and proper engine operation.

Hope this help (remember rated this).

May 17, 2010 | 2001 Pontiac Bonneville

1 Answer

I need the diagram to put the spark plug cables


2003 Chevrolet Malibu 3.1L SFI OHV 6cyl
Spark Plug Wires - Removal & Installation

3.5L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
    NOTE Twist the spark plug boot one-half turn in order to release the boot. Pull on the spark plug boot only. Do not pull on the spark plug wire or the wire could be damaged.
  2. Remove the intake manifold cover, if required.
  3. Disconnect the left side spark plug wires from the spark plugs.
  4. Disconnect the left side spark plug wires from the ignition coil.
  5. Remove the spark plug wire clips from the Manifold Absolute Pressure (MAP) sensor bracket and the heater inlet and outlet pipe tab.
  6. Remove the spark plug wire assembly.
  7. If replacing only one plug wire, open the retaining clips and remove the appropriate spark plug wire.
  8. Disconnect the right side spark plug wires from the spark plugs.
  9. Disconnect the right side spark plugs from the ignition coils.
  10. Remove the spark plug wire assembly.
  11. If replacing only one plug wire, open the retaining clip and remove the appropriate spark plug wire.
To install:
  1. Install the spark plug wire assembly.
  2. Connect the right side spark plugs to the ignition coils.
  3. Connect the right side spark plug wires to the spark plugs.
  4. If replacing only one plug wire, open the retaining clip and install the appropriate spark plug wire.
  5. Install the spark plug wire assembly.
  6. Connect the left side spark plug wires to the spark plugs.
  7. Connect the left side spark plug wires to the ignition coil.
  8. Install the spark plug wire clips to the MAP sensor bracket and the heater inlet and outlet pipe tab.
  9. If replacing only one plug wire, open the retaining clips and install the appropriate spark plug wire.
  10. Install the intake manifold cover, if required.

Fig. 2.2L Engine Firing Order: 1-3-4-2 Distributorless ignition system
74d742b.jpg


Fig. 3.1L Engine Firing order: 1-2-3-4-5-6 Distributorless ignition system
306b531.jpg


Fig. 3.5L Engine Firing order: 1-2-3-4-5-6 Distributorless ignition system
9313fa7.jpg


Fig. 2.4L Engine Firing order: 1-3-4-2 Distributorless ignition system
2c9af72.jpg


Fig. 3.1L Engine Firing order: 1-2-3-4-5-6 Distributorless ignition system
d929c16.jpg


Fig. 2.2L Engine Firing Order: 1-3-4-2 Distributorless ignition system
f357cd3.jpg

Fig. 3.5L & 3.9L Engines Firing order: 1-2-3-4-5-6 Distributorless ignition system
09e9db9.jpg

I really hope help you with this (remember rated this help) Good luck.

Sep 23, 2009 | 2003 Chevrolet Malibu

2 Answers

2004 freelander


After removing the engine cover and disconnecting the battery ,disconnect the air pipes that run across the manifold , these are normally brittle so handle them gently , remove them by pushing the clip at the base of the pipe down while pulling the pipe out.Do this with the fuel pipes too .The inlet manifold is held on by 4 bolts found next to the inlet pipes.There is also a bracket behind the manifold held on by two philips screws.When you refit the new manifold , apply some rubber grease on the o-rings as not to pinch them.Get you radio code before you disconnect the battery.

Oct 19, 2008 | 2004 Land Rover FreeLander

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