Question about 1994 Chevrolet S-10

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Do i need to remove my intake plenum to undu my intake exhast to repair head gasket on 94 s10 2.2lt

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  • Chevrolet Master
  • 635 Answers

Yes.

Posted on Nov 03, 2013

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Posted on Jan 02, 2017

rsst
  • 175 Answers

SOURCE: I need to remove the upper intake manifold plenum.

There are no fasteners inside the plenum, The electrical connection for the injectors is very tight due to a rubber ring gasket the seals the injector assembly to the plenum. Carefully push down on the electrical assmbly while prying up the plenum. You also may have to remove the thermostat and hose. I've done this 3 times on my ladies 96 Yukon.

Posted on Jul 11, 2009

  • 1 Answer

SOURCE: need to replace blown head gasket on the above vehicle

are you sure head is not cracked

Posted on Aug 07, 2009

emissionwiz
  • 75822 Answers

SOURCE: Replacing head gasket on my 94 cavalier

there is not a way to not affect the valve timing, the cam belt must be replaced in a repair like this, when u put it back together you must reset and confirm all the valve timing marks are in correct alignment, just no way way around this, if the cam is timed right the engines ignition timing is correct as well and will require no adjustment. this answer applies to all engine that use a cam drive belt.

Posted on Aug 13, 2009

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2001 Buick Regal keeps stalling and running rough has white smoke coming out of tail pipe


The upper intake plenum is leaking coolant into the cylinder heads. The head gaskets on this motor are awesome. So, chances are it's the upper intake plenum. You can check this, by removing the vacuum hose that runs between the upper plenum and the brake booster. Stick your finger in and try to touch the top of the lower intake manifold. If your finger is wet it the upper plenum. You might as well replace the lower intake gasket while you're performing this work because they are prone to failure also. Use a shop vac to pull any coolant out of the cylinder heads. Get brand new spark plugs because the old ones are probably fouled. Once you get the plenum and gaskets replaced, remove your fuel pump relay and leave the spark plugs out and turn the engine over repeatedly for about 10 seconds to push any excess coolant out of the cylinder heads. Then, put the spark plugs in and turn the engine over for 10 seconds again. This will burn excess fuel as coolant out. Then, replace the fuel pump relay to allow fuel to be pumped into the heads. Car will smoke for a few when it fires up, but will clear out quickly. CHANGE THE OIL! Twice within a week if possible.

Jul 23, 2012 | 2001 Buick Regal

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

I'm in the process of replacing the thermostat on my 2003 freelander. finally got the coolant drained......that was fun. everything is disconnected and all intake plenum bolts removed( 4 small in the...


You will have to remove the intake manifold (this is the solid large plastic cover that covers the top of the engine when you remove the engine cover). There are many wires and small vacuum hoses to disconnect. Plus.., when re-installing, it is a common problem the manifold cracks if excessive torque is applied to the fastening bolts. And you probably should relpace the intake manifold gasket.You can then remove the thermostat assembly by disconnecting the hoses and loosening the mounting screw.

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The procedure as per service manual is as follows:----

Following the Service Manual instructions, drain the coolant circuit, then remove the return pipe and the short rubber hose connected to the engine main coolant rail (1 clip at the bottom + 1 clip at the top). You remove also the outlet hose (1 clip at the engine outlet spout + 1 clip at the bottom pipe, you need to loosen the pipe mount to remove the hose). Once removed the return pipe you can undo the coolant rail: 2 (tight) bolts below the rail and the oil dipstick bolt holding the thermostat housing. Doing this without the manifold in place is simple, but its not that easy with the manifold on.... once loosened the coolant rail you can remove the thermostat housing. You open it (3 bolts) and replace the old thermostat with new. All 3 gaskets should be replaced, to minimize the risk of leaks. Apply silicone lubricant on the O-rings, then fit housing + coolant rail back in.

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This will help you.Thanks.Helpmech.



Nov 16, 2010 | 2003 Land Rover Freelander

1 Answer

Can a bad intake plenum leak antifreeze into the engine on a 2002 century 3.1?The computer code was misfire #1 cylinder. Complete tune-up done, same problem, new#1 injector, same problem. Now the coolant...


I see a lot of lower intake gasket leaks on these but usually you get an external leak or you'll find coolant mixed with the oil, not a misfire. Upper plenum is dry on the 3.1 and just bolts onto the top of the lower intake. We usually apply pressure to the cooling system overnight with the spark plug removed from the misfiring cylinder. If there is coolant in the cylinder come morning then you only have to figure out where it is coming from. If the plenum is removed during the test you might be able to see where the coolant is or isn't coming from with a borescope by looking down the intake runner.

Jun 01, 2010 | 2002 Buick Century

4 Answers

My 97 oldsmobile cutlass supreme is leaking coolant and over heating, why? I also noticed tht the oil is milky. Please help


The most likely source of your problem is NOT a head gasket or cracked head, but the black plastic plenum or "upper intake manifold". These GM engines tend to melt, crack, or warp the plenum because of the hot EGR tube sticking up through the plastic.

If water is getting into your oil (milky looking), your lower intake manifold gasket is probably cracked. Once the plenum is off the engine, there are only about a dozen bolts holding the lower intake manifold on. When you replace the gasket, it is recommended to use an ALL METAL gasket with rubber seals to prevent this from happening again. The metal gaskets cost about $80 where as the plastic ones that are prone to breaking cost about $45. Better to fix it right once than to do it wrong several times.

Also, if you are still using Dexcool coolant (orangeish), be sure to change it every two years or so as it does bad things to seals when it gets old.

Nov 13, 2009 | 1997 Oldsmobile Cutlass Supreme

1 Answer

How hard is it to replace the head gasket or how much would it cost


its not hard if you get either a haynes, or a chilton repair manual, chiltons are more indepth, and have photos, both are available at most part stores, the part store can also give you a quote on the parts, make sure you ask for an upper enine kit, not just a head gasket. this way youll get gaskets for intake, exhaust manifolds, plenum, and intake gaskets, as well as the head gaskets.

Oct 30, 2009 | 1998 Dodge Dakota

1 Answer

My 2001 volvo S40 is bellowing white smoke from the exhast pipe what could be the cause of it? How do I repair this problem?


sounds like the head gasket or even the intake manifold gasket has failed. both repairs require signifcant down time and to be repared by a competant repair facility as ther could be hidden or deeper damge when items are removed for replacement.

Sep 23, 2009 | 2001 Volvo S40

2 Answers

Gettting the intake plenum off a 02 freelander


My 2002 Land Rover Freelander V6 thermostat crapped out as well and I decided to replace it myself.

The plenum is deceptive, but after 3 hours of looking and trying I finally got it off. Of course there are many hoses and electrical connections that need to be removed, but that's the easy part because you can see them all. The bolts that hold on the plenum are what your worried about and I will now tell you where they are. Read this and you should take about 30min to remove the plenum.

There are a total of 6 bolts to be removed that secure the intake plenum to the intake manifolds.

First remove the 4, 10mm large and obvious bolts at the top of the plenum. Now here is the tricky part, there are 2 bolts that are at the back of the plenum near the fire wall. As you are looking at the intake plenum from the front of the car, they are on the back side of the plenum near the fire wall on the passenger and driver side of the intake plenum.

Both bolts your looking for are 8mm bolts. If you remove a 10mm bolt, your removing the bolts that secure the rear spark plug coils.

The driver side rear intake plenum 8mm bolt is secured to the plenum itself. Fell with your hand about the back of the plenum on the right side for a lone bolt that is in the plenum with a metal tab that goes down to the back of the rear cylinder head. Remove the bolt that is attached to the intake plenum, not on the rear cylinder head

The passenger side one is a bit different. Feel on the back of the intake plenum about the passenger side for a metal support tab that comes down from the intake plenum and secures to the rear cylinder head. Where the support tab attaches to the head is a 8mm bolt that you remove.

Now here come the leap of faith. If you have the 4, 10mm obvious bolts removed and the 2, 8mm from the rear of the plenum removed, and if you can rock the plenum up and down about 2-3 inches,but it still feels like its attached to the intake manifolds in the middle of the engine, then you have removed all the bolts that secure the intake plenum to the engine. This is good.

The intake plenum is now being held on by the rear intake manifold by 3 O-ring gaskets. Push onto the back of the intake plenum near the firewall to expose a gap at the front of the intake plenum at the front intake manifold. Put 2-3 long flat screwdrivers into the gap or a small pry bar, and ever so gently but forcefully, apply prying force as to not damage the mating surface of the aluminum intake manifold, until the intake plenum pops off. It will just POP off.

Now that the intake plenum is popped off, take careful note of all the electrical plugs and hoses as to where they attach. You will not need any tools to disconnect the electrical plugs or hoses. To remove the hoses, push down the red ring with you fingers that the hose goes into and pull on the hose, it should come out very easily. The electrical connectors, push on the metal clip down and pull the connector loose. The electrical connectors only plug into their own plug, so you cant mess them up.

Tools you will need to replace the thermostat;

1. 8mm combo wrench. Make sure its not too long, shorter is better.
2. 10mm socket, shallow. 10mm combo wrench
3. 2-3 flat screwdrivers, for prying off the intake plenum
4. Ratchet wrench
5. 1 foot long worth of socket extensions. 2 6inch extensions will work as well
6. Universal socket joint
7. Angled needle nose pliers make it easier for hose clap removal, but straight needle nose pliers will work
8. Diagonal cutters to cut securing zip ties for the wiring harness

Take you time, once the plenum is off it goes pretty smooth after that. We removed just the forward intake manifold and that was more than enough clearance to remove the thermostat. You do not need to remove the fuel rail or spark plug coils from the manifold but you will need to disconnect the electrical connections to move the intake manifold out of the way.


Take pictures, there's a lot of hoses that go all over the place. The electrical connectors are only long enough to go where their supposed to go.

Then take that UK piece of **** to the dealer and trade it in for anything made in the USA or Japan. Changing a thermostat in any of those will only take 10 min and require 1 tool.

Repair provided by KPCYCLES.com of Honolulu, HI

Jun 24, 2009 | 2002 Land Rover Freelander

2 Answers

Hello, i need to know what all is needed to chage the rear spark plugs in my 04 sante fe? do i need a new intake gasket ect. thanks in advance.


You shouldn't need any of that if you have the right tools for the job such as a swivel, extensions and the right socket of course. It wouldn't make any sense for them to build a vehicle in which case you would have to disassemble things from the cylinder head to replace a few spark plugs

Mar 03, 2009 | 2004 Hyundai Santa Fe

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

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