My friends cannot afford the 600.00 estimate to have their intake manifold gasket replaced on their 84 toyota corolla SR5
They have asked my husband and son for help.
How complicated is it to do this on this car?
What is the process?
Is it something that a do-it-yourselfer could handle?
It is a pretty basic job the important things to remember is to remove everything sequentially. in other words make a note of which bolts go where. remove the intake and clean both mating surfaces, usually you dont need gasket sealant for an intake manifold. reassemble in the order removed thats about it.
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Please take your vehicle to a qualified mechanic. A leak in the intake manifold gasket can cause catastrophic results not only are you losing coolant to the outside but may also be leaking coolant internally which could contaminate the oil and cause the engine to fail due to loss in lubricating properties. Also, if not torqued properly you may have a warped intake manifold. Please see a good mechanic it may cost more but you risk a much larger cost to replace an engine
first you must disconnect the throttle body components, then take off throttle body. then you should have full acces to your intake manifold. you should also beable to see all the nuts or bolts that hold the intake manifold in place. unbolt them and take it off. keep in mind you are going to need to buy a new intake manifold gasket befor putting it back on. good luck
intake manifold or head gasket? i know head gasket need a sequential order followed by how many degrees and Lbs of pressure. if its on the intake i doubt it needs an specific torque. just try not to crack the intake manifold since its made of plastic.
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
Remove the bolts that hold the thermostat housing onto the intake manifold of the MR2 with an adjustable wrench
and pull up on the thermostat housing to remove it from the intake. The
housing is still connected to the hose. Lift the thermostat housing and
the hose up to drain the antifreeze back into the radiator.
Remove the old thermostat from the hole inside of the intake
manifold and replace it with a new one. Pull the thermostat gasket off
of the top of the intake manifold and wipe the manifold clean with a
Place a bead of RTV gasket maker around the bottom edge of
the thermostat housing and allow it to dry for 15 minutes. Place the
thermostat housing back onto the intake manifold and bolt the housing
back into place. Allow 15 more minutes of drying time and slightly
tighten the bolts again. This will form a solid seal between the intake
manifold and the thermostat housing.
If the manifold was replaced, install or connect the following:
Vacuum source manifold.
Positive Crankcase Ventilation (PCV) valve.
Manifold Absolute Pressure (MAP) sensor.
Throttle body assembly.
Upper-to-lower intake manifold carrier gasket to the upper intake manifold.
Carefully place the upper intake manifold onto the lower intake manifold. Ensure that the alignment pins in the upper intake manifold align with the holes in the lower intake manifold.
NOTE: Apply thread lock compound, to the bolt threads before assembly.
Install or connect the following:
Upper intake manifold. Tighten the upper intake manifold bolts in sequence to 89 in lbs (10 Nm)
Accelerator and the cruise control cables with the bracket to the throttle body.
EVAP purge solenoid vacuum line to the throttle body.
Connect the electrical connectors to the following:
Mass Air Flow (MAF) sensor
Manifold Absolute Pressure (MAP) sensor
Idle Air Control (IAC) valve
Throttle Position (T/P) sensor
EVAP purge solenoid
Install or connect the following:
Throttle body upper support bracket bolt. Tighten the bolt to 89 in lbs (10 Nm)
EGR valve wiring harness heat shield, nut and the bolt. Tighten the nut and the bolt to 89 in lbs (10 Nm)
There is a heater core bypass pipe that runs from the block (under the manifold) to the bacl of theengine where you will see a flat rectangular "sheet metal" thing with a pipe coming out of it. The a rubber hose connects. You need to pull the top air plenums and intake to get to it. The p[ipe flange bolts to the block with silicone rtv as a sealant.
It's possible he has two plug wires crossed, or pulled a spak plug wire apart replace #2 spark plug wire First. To test check the firing order and make sure all the wires on the right plugs and the correct place on the distributor, if it is right, then buy a can of carburator cleaner and spray around the intake gasket if the engine revs up when you spray the carb cleaner around the intake manifold with (engine running) if the engine rpm revs up you have an intake leak.