How to fix a leaking Chevy Malibu engine?
How to fix a leaking Chevy Malibu engine?
On my ’02 Chevy Malibu, the sequence begins: Disconnect the air cleaner. Take off the plenum. Disconnect the PCV valve and push it out of the way. Disconnect the heater bypass hoses and clamp them off (or jam sharpie pens into the hoses, this works just as good as a clamp). Disconnect the thermostat by-pass pipe and remove it.
Why is coolant leaking from my GM 3.1L engine?
One of the most common problems on the GM 3.1L and 3.4L V6 engines is coolant leaking from the intake manifold gaskets. This problem has been a gold mine for GM and the auto repair industry.
Why is my Chevy 3.1 liter engine leaking oil?
The Chevy 3.1-liter engine has a notorious weakness, a failure mode that GM will not cover after the warranty expires. The lower intake manifold gasket fails and leaks coolant into the engine oil. I had the dealership replace the manifold gasket the first time at about 40,000 miles before it got to the point of leaking coolant into the oil.
Can a bad intake manifold cause a coolant leak?
Coolant leaks. Another symptom of a faulty intake manifold gasket is coolant leaks. Some intake manifold gaskets also seal engine coolant, and if the gasket wears out it may lead to a coolant leak.
Why is my Chevy Malibu leaking water from the middle?
My car is a Chevy Malibu 1999 2.4L engine and is leaking water almost from the middle what could cause this. Could be the water pump if it is more toward the passenger side. Or the coolant outlet housing if on the drivers side.
One of the most common problems on the GM 3.1L and 3.4L V6 engines is coolant leaking from the intake manifold gaskets. This problem has been a gold mine for GM and the auto repair industry.
The Chevy 3.1-liter engine has a notorious weakness, a failure mode that GM will not cover after the warranty expires. The lower intake manifold gasket fails and leaks coolant into the engine oil. I had the dealership replace the manifold gasket the first time at about 40,000 miles before it got to the point of leaking coolant into the oil.
Coolant leaks. Another symptom of a faulty intake manifold gasket is coolant leaks. Some intake manifold gaskets also seal engine coolant, and if the gasket wears out it may lead to a coolant leak.
How to replace intake manifold gasket on Chevy 3.1?
Position a gasket onto the lower intake manifold. Position the upper intake manifold on the gasket. Install the bolts and tighten them to 18 foot-pounds of torque, working from the center out, in a crisscross pattern. Reinstall the EGR vale, alternator brace, vacuum lines and the MAP sensor.
How to replace gaskets in a GM 3.1L engine?
3) Plug in the Map sensor and the wiring in front of the upper manifold. Attach vacuum hose to fuel regulator upper right of manifold. 4) Mount the alternator bracket with the three 15mm bolts on the front and one in the back. Make sure the power steering lines are properly routed between the bracket and the pump. There is holder down below.
On my ’02 Chevy Malibu, the sequence begins: Disconnect the air cleaner. Take off the plenum. Disconnect the PCV valve and push it out of the way. Disconnect the heater bypass hoses and clamp them off (or jam sharpie pens into the hoses, this works just as good as a clamp). Disconnect the thermostat by-pass pipe and remove it.
3) Plug in the Map sensor and the wiring in front of the upper manifold. Attach vacuum hose to fuel regulator upper right of manifold. 4) Mount the alternator bracket with the three 15mm bolts on the front and one in the back. Make sure the power steering lines are properly routed between the bracket and the pump. There is holder down below.
What’s the disassembly sequence on a Chevy Malibu?
As an example, the video below shows the disassembly sequence on an ‘04 Buick Century. On my ’02 Chevy Malibu, the sequence begins: Disconnect the air cleaner. Take off the plenum. Disconnect the PCV valve and push it out of the way.
Why was my Chevy 3.1 liter engine leaking?
The first time, I didn’t do the job myself because I didn’t have the time; also, I was a little intimidated by the fuel injection system, two intake manifolds, the special tools I would need to complete the repair, and the manual’s complicated procedures for removing all the different parts of the upper engine.
What happens when an intake manifold gasket goes bad?
A vacuum leak caused by a bad intake manifold gasket can throw off the engine’s air-fuel ratio and cause engine performance issues such as misfires, a decrease in power and acceleration, a reduction in fuel efficiency, and even stalling.
What kind of leak is an intake manifold?
The most common leaks found in an engine are, intake manifold leaks. Consequently, intake manifold leaks, are usually, the fault of the gasket. Intake manifold gaskets, can be made of paper, rubber, metal, and sometimes a combination of the three.
Can a gasket leak cause a fuel trim problem?
A fuel trim problem can occur if the intake manifold has the tiniest leak. If you just use your eyes and ears to find the leak, it will become very time-consuming. So, Anytime air leaks through the intake manifold, it will cause air to get sucked in. Whatever is in the air that’s pulled in, will compromise the mixture of the fuel and air.
Where does the GM 3.1L engine come from?
Today, the 3.1L lives on in China where it is being made in various displacements (2.5L, 3.1L and 3.4L) for GM’s Chinese-built Buicks. The larger 3.4L version has been imported into the U.S. since 2005 to power the Chevy Equinox.
How did the GM 3.1L engine save money?
Over the years, GM has saved a bundle on manufacturing the 3.1L engine by using the production line tooling it originally developed for the 2.8L V6. By simply changing the bore diameter, the displacement of the same engine block could now be increased for more power and torque.
As an example, the video below shows the disassembly sequence on an ‘04 Buick Century. On my ’02 Chevy Malibu, the sequence begins: Disconnect the air cleaner. Take off the plenum. Disconnect the PCV valve and push it out of the way.
How to replace the intake in a GM 3.1L engine?
1) Disconnect the negative cable at battery. 2) Unplug and mark 8 or 9 electrical connectors from their devices at the top firewall side of the engine. 3) Now you can remove the air cleaner duct. 4) Remove the accelerator and cruise control cables from the mounting bracket. Set off to the side.
What kind of engine does a GM 3.6 liter have?
GM 3.6L V6 LFX Engine Specs Type: 3.6L V6 Displacement: 3564 cc (217 ci) Engine Orientation: Longitudinal and Transverse Compression ratio: 11.5:1 Valve configuration: Dual overhead camshafts
How to repair a leaking intake manifold gasket?
Before you begin the tear-down, you will need to do some preliminary research. First, go to the auto parts store and buy the repair manual for your make and model car. Next, pick up a few car magazines. They usually have articles on replacing intake manifold gaskets and rebuilding cylinder heads.
Before you begin the tear-down, you will need to do some preliminary research. First, go to the auto parts store and buy the repair manual for your make and model car. Next, pick up a few car magazines. They usually have articles on replacing intake manifold gaskets and rebuilding cylinder heads.
How to replace fuel rail in GM 3.1L engine?
Reattach two clamps and an 8mm bolt to the housing that attaches the assembly to the water pump. 8) Mount the fuel rail assembly at the same time as the power steering pump. Work them down into position together. If the pump is put in first the rail assembly will not fit and vice versa.
