Is This common????

[crash]

Ok so the other day I had to go rescue my grandma and her 1997 GrandAm with the 3100 engine in it. It lost all the coolant and she said that right when her gauge went to 0 she pulled over and tried to add more coolant, but it was just running right out of the intake gasket on the lower front right bank. So I tore it down and cleaned it all up, put it all back together, filled it with coolant and went to start it, and it wouldnt start just turn over and coolant was blowing out from under the res. cap. So does that mean its a blown head gasket? Cause the only thing that would have enough force to push coolant out would be the compression of one of the cylinders leaking into the coolant passage...right? Let me know what you guys think.
thanks,
Jr

[gsEnterpries]

you hit that one on the head. Just had the same problem at work, replaced HG's and it stopped

-Gary

[crash]

Well took heads to the machine shop and they were warped .010 plus. So I'll get them back tomorrow morning and give it another try!!!
Jr

[geoffinbc]

Yea aluminum heads will warp when overheated. Iron head crack badly between the valves.

Granny will have a bit more compression now! Time to haul ass!

[crash]

Well I got it running today finally. I have been working 5 15 hour night shifts so was on days off now. It runs good, but has a rough idle. I pulled the codes and there was two of them. The first one is a P0122 which has something to do with the TPS. The second one is a P0306 which is a cylinder number 6 misfire. I check the plug and wire and both are working fine, so I was wondering if you guys had any ideas on how to fix my problems.
thanks,
Jr

[sprucegagt]

Check the injector for your misfire problem. It could also be the coil or ICM. You'll have to diagnosis it to know for sure.

Your P0122 code is for a low TPS voltage signal. Check that the sensor is plugged in. If it is, then the sensor may have gone bad. It does happen from time to time.

[kitabel]

I hate to say this, but the piston dome doesn't like compressing a liquid. Unless a valve was open, or the engine stopped almost instantly, the ring lands typically get squashed down and capture the rings. The piston may not break, but the ring seal will not recover.

[crash]

I hate to say this, but the piston dome doesn't like compressing a liquid. Unless a valve was open, or the engine stopped almost instantly, the ring lands typically get squashed down and capture the rings. The piston may not break, but the ring seal will not recover.

Well Im pretty sure the ring seal is fine. When I pulled the head 2, 4, and 6 where full of coolant. And when I tried to start the car when it was on side of the rode to load it up on my car trailer it did not shoot coolant out, but then again it had not cooled down since the initial intake gasket problem. Ill do some checking. Thanks for the advice guys.

[1meanz]

do a compression test and go from there, and deffinatly check the injs, since you could have stired up some gunk when taking them off/putting them back on. these motors seem to last a wile, but if one thing goes, it all goes lol.

[crash]

Ok I finally got some more time to mess with the car. I have a snap on Modis V7.4 scan tool. So I hooked it up to the car. The only code I have now is a P0300 random misfire. I pulled up all the cylinders and its only misfiring on number 6. It only misefires from idle to 1100 rpm, once you hit 1100 misfires drop to zero. So I did a injector balance test and number 6 was only dropping 5psi when all others were at 10psi. So I installed a new injector, did that balance test again and all were at 10psi. I start it up and the misfire is still there. Swap wires and plugs around and stays at number six. Checked spark and its getting spark. Any one have any ideas, im really flustered.
thanks,
Jr

[LeftVentricle]

Swap the coil packs around, just for shits.

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Ok swapped coils around and no change. Did a injector balance test while car was cold and injectors 1-5 would drop 14psi and 6 would only drop 10psi. Started car and misfire would not go away with the higher rpm. It only goes away when its warm. So this leaves what for me, a junk head, spring, valve or cam? Any ideas on what to do next?
thanks,
Jr

[crash]

The only thing I havnt done is put a fuel filter on it, but if the fuel filter was plugged wouldnt I be getting more then just one misfire instead of just number 6?

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Ok FINALLY got the misfire fixed. It was the ICM. Now I got another problem. Does any one know of any quick checks or common problems for a P1374, also getting a P0121 but I think that might be the tps.
thanks,
Jr

[crash]

Wow nobody has any idea's. I just replaced the CKP sensor on the side of the block and it starts a little easier now, but still has a rough idle. I also made a new harness for it. Any one? Im completely lost. Thanks,
Jr