Question about 1990 Toyota Pickup

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Engin dies after warm up then, hard to restart, will not stay run

I replaced the valve cover gaskets by removing the intake plenum. re installed everything then the problem began, first i hade some vacume hoses on wrong then i found the diagram and re connected and re checked several times now it will not stay running after warm like dies emediatley.

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Use carb cleaner to trace remaining vacuum leaks .spray while running around plenum and hoses..engine will get happy when it sucks in carb cleaner.. that will allow to find leaking area ...good luck

Posted on Dec 17, 2008

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Changhing valve cover gasket 03 mitz galant 3.0 v6


  1. Disconnect the negative battery cable.
  2. Remove the upper intake manifold.
  3. On the 3.0L DOHC engine, remove the ignition wire cover.
  4. Remove the ignition wires and spark plugs.
  5. Remove the crankcase ventilation tubes from both valve covers.
  6. Remove the retaining nuts and engine wiring from both valve covers and move aside.
  7. Remove the valve cover retaining bolts and studs.
  8. Remove both valve covers from the engine.
To install:
  1. Clean the valve cover gasket sealing surfaces.
  2. Install new valve cover gaskets onto the valve covers.
  3. Place the valve covers into position.
  4. Reinstall the valve cover retaining bolts and studs and tighten in sequence to:

    3.0L SOHC engine: 7 ft. lbs. (9 Nm)3.0L DOHC engine: 42-54 inch lbs. (4-5 Nm)3.5L engine: 30 inch lbs. (3 Nm)
  5. Install the engine wiring and tighten the retaining nuts.
  6. Install the crankcase ventilation tubes into both valve covers.
  7. Install the ignition wire separators, the ignition wires, and the spark plugs.
  8. On the 3.0L DOHC engine, install the ignition wire cover.
  9. Install the upper intake manifold as described in this section.
  10. Connect the negative battery cable.
  11. Run the engine and check for leaks and proper operation.

Jun 25, 2017 | Cars & Trucks

Tip

How to remove/replace the Valve Cover Gaskets on a New Beetle car?


Replace the valve cover gasket if the valve cover gaskets are leaking or if they're worn. The procedure is as follows:--
1) First of all let the motor cool down if the car was recently driven. Then remove the air intake boot.The air intake boot ios attached to the engine's throttle body.
2) Carefully disconnect the throttle cable , hoses and electrical connectors located on the upper intake manifold.
3) Then disconnect the hard pipe that is connected to the EGR (exhaust gas recirculation) valve.
4) The EGR valve is located beneath the upper intake manifold.
5) Then remove the bolts from both the upper intake manifold and the manifold support bracket.
6) Now the upper intake main fold and lower intake manifold both have got loose as you removed the nut.
7) After that remove the upper intake manifold from the lower intake manifold. Carefully place clean rags over the intake runners to prevent anything from falling into the intake system.
8) Then you will have to disconnect the crank case breather valve on the valve cover.
9) Then remove the bolts from the valve cover and remove the reinforcing straps.
10) Then remove the camshaft belt cover and the dust shield from the back of the camshaft sprocket.
11) Now carefully remove the valve cover. Properly clean the old gasket material with gasket remover.
12) You can install a new gasket in the reverse procedure of removal.


This will help. good luck.

on Mar 09, 2010 | Volkswagen Beetle Cars & Trucks

2 Answers

How to replace a intake plenum gasket


Well basically, you remove the intake plenum and replace the gasket and reinstall the plenum. Here are the steps:

1. Disconnect the negative battery cable from the remote jumper terminal located at the right strut tower.
2. Remove the air inlet resonator and tube.
3. Remove the throttle actuator cables from the throttle arm and bracket.
4. Disconnect Secondary Runner Valve (SRV), Manifold Tuning Valve (MTV), Throttle Position Sensor (TPS), Idle Air Control (IAC) motor electrical connectors.
5. Remove the electrical connector and the Intake Air Temperature/Manifold Absolute Pressure (TMAP) sensor.
6. Disconnect vacuum hoses from the Secondary Runner Valve (SRV) reservoir, Speed Control reservoir, and PCV.
7. Remove right and left intake manifold supports.
8. Remove support brackets at the intake manifold front corners and MTV.
9. Loosen upper fastener attaching throttle body to support bracket.
10. Remove clips attaching EGR tubes to intake manifold.
11. Remove intake manifold bolts and manifold
12. Remove old gaskets, Clean gasket surfaces, and install new gaskets.
13. Reverse steps to reinstall manifold

Jun 16, 2012 | 1999 Chrysler 300M

2 Answers

My '98 Catera needs the #1 cyl ignition coil replaced,plus the valve cover gaskets.Is all of this readily accessible when the air cleaner is removed?Or,more importantly,how many components must be...


Not easy but doable. I would mark anything you aren't familiar with to get it back together right. Please let me know if you have any questions, and thanks for using FixYa.


IGNITION COIL REMOVAL & INSTALLATION
3.0L Engine
  1. Remove the wiper arms
  2. Remove the left and right side air inlet grilles
  3. Remove the wiper motor.
  4. Detach the power brake booster vacuum connection from the intake plenum.
  5. Disconnect the spark plug wiring harness from the ignition coil.
  6. Detach the electrical connection from the ignition coil.
  7. Remove the bolts from the ignition coil, and remove the coil.

To install:
  1. Installation is the reversal of the removal procedure.
  2. Tighten the coil bolts to 71 inch lbs. 8 (Nm).
  3. Tighten the power brake booster vacuum connection until snug.

valve cover removal & installation3.0L Engine
RIGHT
  1. Disconnect the negative battery cable.
  2. Remove the intake plenum and the intake manifold.
  3. Remove the spark plug boots from the spark plugs, and then the wires from the routing retainers. Make sure they are tagged for proper installation.
  4. Remove the rocker arm cover-to-cylinder screws, the cover, and the gasket/seals. Discard the seals.


NOTE Ensure all eight sealing O-rings are accounted for. They may stick to the camshaft bearing caps or fall into the oil return journals in the cylinder head.
jturcotte_1756.gif

Fig. The location of the valve cover O-rings is shown here


jturcotte_1757.gif

Fig. The valve cover sealant application points
To install:

  1. Install new valve cover seals. Lightly coat the new seals, including O-rings, with engine oil prior to installation. The oil application will assist in holding the O-ring seals to the valve cover.
  2. Apply a thin coat of silicone sealer at the front and back of the seals.
  3. Install the valve cover to the cylinder head, and tighten the bolts to 71 inch lbs. (8 Nm).
  4. Route the spark plug wires into the retainers, and install the plug boots to the spark plugs.
  5. Replace the intake manifold and the intake plenum.
  6. Connect the negative battery cable.
LEFT
  1. Disconnect the negative battery cable.
  2. Remove the intake plenum and the intake manifold.
  3. Remove the spark plug boots from the spark plugs, and then the wires from the routing retainers. Make sure they are tagged for proper installation.
  4. Remove the oil filler spout.
    1. Unlock the tab.
    2. Twist counterclockwise.

  5. Remove the rocker arm cover-to-cylinder screws, the cover, and the gasket/seals. Discard the seals.

NOTE Ensure all eight sealing O-rings are accounted for. They may stick to the camshaft bearing caps or fall into the oil return journals in the cylinder head.
To install:
  1. Install new valve cover seals. Lightly coat the new seals, including O-rings, with engine oil prior to installation. The oil application will assist in holding the O-ring seals to the valve cover.
  2. Apply a thin coat of silicone sealer at the front and back of the seals.
  3. Install the valve cover to the cylinder head, and tighten the bolts to 71 inch lbs. (8 Nm).
  4. Install the oil filler spout.
    1. Insert the spout and twist clockwise.
    2. Ensure the locking tab seats on the valve cover bolt head.

  5. Route the spark plug wires into the retainers, and install the plug boots to the spark plugs.
  6. Replace the intake manifold and the intake plenum.
  7. Connect the negative battery cable.

INTAKE MANIFOLD REMOVAL & INSTALLATION

3.0L Engine
This vehicle uses a sequential multiport fuel injected engine. Fuel injector connectors must be positioned onto their appropriate fuel injector or engine performance and exhaust emissions may be seriously affected. Fuel injector connectors are numbered to match their cylinders.
  1. Remove the intake plenum.
  2. Properly relieve the fuel system pressure.
  3. Remove the fuel supply and fuel return hose from the fuel rail.
  4. Fuel injector electrical harness connector.
  5. Remove the intake manifold bolts and the intake manifold.


NOTE Mask off the ports to the intake manifold spacer. If foreign objects enter the engine, severe damage may result.
Clean the intake manifold sealing surfaces with a non-abrasive tool or solvent.
Do not damage machined aluminum surfaces or improper sealing may occur.


jturcotte_1758.gif

Fig. Location of the guide pins for the intake plenum-3.0L engine


jturcotte_1759.gif

Fig. Intake plenum-to-intake manifold mounting


jturcotte_1760.gif

Fig. The intake manifold bolt locations
To install:

  1. Remove the masking from the intake ports.
  2. Install the intake manifold, and tighten the intake bolts to 15 ft. lbs. (20 Nm), rotating the tightening sequence.
  3. Reconnect the fuel injector electrical harness connector.
  4. Couple the fuel supply and fuel return hose,. Tighten the connection to 11 ft. lbs. (15 Nm).


NOTE Counterhold the connections to prevent damage to the fuel rail.
  1. Install the intake plenum.
  2. Connect the negative battery cable.

May 24, 2011 | 1998 Cadillac Catera

2 Answers

My dodge dakota wont idle,foules up plug no.1,misfires.I have codes po172 and po301 from pmc .replaced plugs. wires.o2 sensor tps sensor,coolant sensor. I have cleaned air temp. sensor. don't know what...


check the gasket for the bottom of the intake plenum
to check remove pcv valve from the valve cover plug the vent hose from the other valve cover and the hole the pcv valve was removed from with your fingers while the engine is idleing. if it builds up a vacuum, noticable by a air rush sound when you remove finger from vent/pcv grommet hole then the gasket for the plate on the bottom of the intake plenum has blown out. it is a very common problem and results in fould plugs and oil consumption problems.

Mar 29, 2010 | 1998 Dodge Dakota

1 Answer

Instructions on changing the timing cover gasket on a 1991 ford thunderbird with 3.8 liter v6 engine


first you have to diconnect throttle cable and trans kick down from throttle body. than disconnect wires and vacuum hoses and remove upper intake manifold plenum. that should give you access to valve covers . Remove bolts from covers and change gaskets. also replace the gasket on the upper intake plenum. install items in reverse order of removal. keep track of vacuum lines where the go when you remove . mark with tape their location.

Nov 08, 2009 | 1991 Ford Thunderbird

1 Answer

Changing the spark plugs on a 2000 forerunner


the upper intake plenum...you will have to remove the plenum to access the spark plugs...usually you are able to unbolt the plenum only and disconnect the front connectors and/or vacuum lines. and tilt the plenum up and out of the way to access the plugs... take care when doing this you can damage the engine if not careful. make sure you get a new intake plenum gasket...as well as the valve cover gaskets...the rubber rings that seal the spark plug tubes from oil tend to leak causing a misfire. you already have to pull the plenum might as well do the valve cover gasket while you are so far in it.

Aug 22, 2009 | 2000 Toyota 4Runner

2 Answers

Slite oil leak from rear valve cover gasket per dealer $650.00


Hello. Let me try to assist you the best I can, with the hope of achieving a FixYa rating from you for my assistance.

Changing the rear valve cover gasket on your vehicle would be not considered a "real" big job, but IS a time-consuming job.
In order to remove the rear cover, you first have to remove the intake plenum. If you do not remove the plenum, you can't get to the valve cover bolts that are under the plenum. After the plenum is off, the valve cover is easy to access. You will also need to replace the intake plenum gasket, if you do the job yourself.

I hope this information has satisfied your question.
Thanks for choosing FixYa for assistance!

Jan 28, 2009 | 1997 Toyota Avalon

1 Answer

Rear valve cover removal for 94 camry se v6


The best way to remove the rear valve cover is to remove the intake plenum. There is really no other way to do it. It is not a hard job, removing the intake plenum, but, trying to tackle the rear cover without taking off the plenum is almost impossible. If he does remove the plenum, make sure he replaces the plenum gasket. Hope this helps.
Thanks for choosing FixYa.

Dec 12, 2008 | 1995 Toyota Camry

1 Answer

Valve covers gasket leak oil


To replace the valve cover gaskets on a Sienna: The front one is easy. The difficult one is the other side, closest to the firewall. You will need to purchase a new intake plenum gasket, when you buy the new valve cover gaskets, because you MUST remove the intake plenum to remove the rear valve cover. You can NOT get the back side valve cover off of the engine without removing the plenum. Trust me.
Hope this helps, and thanks for choosing FixYa.

Nov 04, 2008 | 2001 Toyota Sienna

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