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My car was not starting, after many trouble shooting, it was discovered that the lower intake gasket was gone (burnt and cracked). Could this have been the reason for which the car was not starting?My car was not starting, after many trouble shooting, it was discovered that the lower intake gasket was gone (burnt and cracked). Could this have been the reason for which the car was not starting?
No, it has not started. We are still troubleshooting
I will want you to please give me the firing order too, which cylinder is 1 and which is 2 etc.No, it has not started. We are still troubleshooting
I will want you to please give me the firing order too, which cylinder is 1 and which is 2 etc.
OK, can you relay the engine specs please. i would like to have the engine size and liter as well so that i may assist you in a professional manner. there may be a combination of issue here at this time that i causing your Montana not to turnover correctly.
OK, can you relay the engine specs please. i would like to have the engine size and liter as well so that i may assist you in a professional manner. there may be a combination of issue here at this time that i causing your Montana not to turnover correctly.
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Remove the 12 bolts that hold the intake to the lower section and disconnect all the hoses and linkages. Replace the lower gaskets and torque the manifold in a radiating sequence in this order. stages to tighten stage 1 - 59 inch pounds stage 2 - 66 inch pounds stage 3 - 90 degrees
Replacing the belt and tensioner is fairly easy and shouldn't cost to much. At least replace the belt if the tensioner is decent. Nothing is worse than having a belt break on the road and being stuck. As for AC, that's really up to you on how hot you like it. :)
The center link on the idler arm would be a good idea in time. You could wait for a while, but don't compromise your steering and handling to much.
As for the lower intake gasket you could run into big problems down the road. GM put a plastic type gasket into these 4.3L motors and they fail all the time. Even at low miles like you have. The problem is you might just be leaking coolant outside the engine block for now, but the gasket could fail and get coolant inside the motor and cause much more problems when mixing with oil and possible engine failure.
Good luck! Let me know if you have other questions. I just replaced a lower intake gasket on a 2001 GMC Jimmy a few months ago.
WHITE SMOKE IS USUALLY COOLANT BEING BURNT UP
SMELL THE EXHAUST IF SWEET SMELL TO IT THAT IS IT
USUALLY HEAD GASKET FAILURE
PULL SPARK PLUG TO DETERMINE WITCH SIDE IS BURNING
THE PLUG WILL BE WITHISH DEPOSIT
MAY ALSO BE CAUSED BY INTAKE GASKET NOT INSTALLED PROPERLY
DOUBLE CHECK INTAKE FIRST MAKE SURE PORTS AND ORIENTATION IS CORRECT
BEFORE PULLING HEADS
2 upper pellum and lower intake gasket( both are called intake gaskets) I did it. time consuming alittle but if your ave or above with mechanics then you'll save yourself $2000.. the new pelunum and gasket cost $130 and it comes with improved gasket and a replacement pipe the melts also. lower gasket $40? need more help or info email me! Richie
NOTE
The 3.8L (VIN K) non-supercharged engine uses a two-piece intake
manifold consisting of an upper air plenum which mounts the throttle
body and a lower intake manifold assembly which houses the fuel
injectors. The 3.8L (VIN 1) supercharged engine uses a similar lower
intake manifold. The supercharger serves as the upper manifold. Lower Manifold
NOTE
Two bolts which fasten the lower intake manifold to the cylinder
head are accessible only after the upper intake manifold is removed.
These bolts are located in the right front and left rear corners of the
lower intake manifold. Remove the upper intake manifold to service the
lower intake. The 3.8L (VIN 1) supercharged engine uses a manifold
similar to the 3.8L (VIN K), but the supercharger serves as the upper
manifold.
Disconnect the negative battery cable.
On 3.8L (VIN 1) engines, remove the supercharger assembly. Please see the procedure in this section.
Remove the upper intake manifold using the procedure above.
Remove the EGR outlet pipe from the intake manifold.
Detach the engine coolant temperature sensor wiring harness from the sensor.
Remove the lower intake manifold bolts and carefully lift off the manifold.
Clean all parts well with degreaser, especially the gasket seal
surfaces on the upper and lower manifold pieces and between the lower
manifold and the cylinder heads..
Install new gaskets to the cylinder heads and new seals to the
engine block. Carefully lower the manifold into place. Apply
thread-locking compound to the bolt threads. Make sure to install the
two hidden bolts in the lower intake manifold. Hand start all bolts,
then torque evenly to 11 ft. lbs. (15 Nm). Follow the toque sequence,
starting in the center, then working outwards in a circle.
Install the remaining components in the reverse order of the removal process.
Upper Intake Manifold (Plenum)
Disconnect the negative battery cable.
On 3.8L (VIN 1) engines, remove the supercharger assembly. Please see the procedure in this section.
Tag for identification, then remove the right side spark plug wires.
Disconnect the ignition wires from the fuel rail.
Remove the fuel rail. Please see Section 5.
Remove the cable bracket from the intake manifold.
Remove the throttle body.
NOTE
Two bolts which fasten the lower intake manifold to the cylinder
head are accessible are accessible only after the upper intake manifold
is removed. These bolts are located in the right front and left rear
corners of the lower intake manifold.
Remove the upper intake manifold bolts and carefully lift the upper intake manifold from the engine.
Fig. Upper intake manifold and bolt torque sequence-3.8L (VIN K) engine To install:
Clean all parts well with degreaser, especially the gasket seal surfaces on the upper and lower manifold pieces.
Install new gaskets to the cylinder heads and new seals to the
engine block. Carefully lower the manifold into place. Make sure to
install the two hidden bolts in the lower intake manifold. Hand start
all bolts, then torque evenly to 89 inch lbs. (10 Nm). Follow the
torque sequence, starting in the center, then working outwards in a
circle.
Install the remaining components in the reverse order of the removal process.
Usually intake has to do with the induction system, as in intake manifold , The intake manifold can have several types of leaks, the intake can have a vacuum leak, oil leak, coolant leak or a combination of any of the before mentioned....hope this helps,
Fig. Lower intake manifold bolt torque sequence-3.8L (VIN K) engine
My car was not starting, after many trouble shooting, it was discovered that the lower intake gasket was gone (burnt and cracked). Could this have been the reason for which the car was not starting?
it is a 3.4l 6cylinder engine
No, it has not started. We are still troubleshooting
I will want you to please give me the firing order too, which cylinder is 1 and which is 2 etc.
Yes still disabled.
OK. one more quick question. is the vehicle still disabled and not able to start at this point or, have you started it recently?
And if it was started, did you notice nat smoke coming out the tail pipe?
OK, i will return shortly with my diagnosis..
OK, can you relay the engine specs please. i would like to have the engine size and liter as well so that i may assist you in a professional manner. there may be a combination of issue here at this time that i causing your Montana not to turnover correctly.
OK , explain what is going on in detail. when you say burnt, do you mean blown or fire damage?
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