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I DONT KNOW WHAT OIL TO USE IN MY 97 VORTEC 5.7

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Did it have synthetic oil in it before? If so you don't use conventional oil. Check owners manual to see if it came with synthetic.

Posted on Jul 01, 2009

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Posted on Jul 01, 2009

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Replaced transmission in 97 gmc Sierra 5.7 vortec and it is not working. I know transmission was good


Did you make sure the convertor was fully seated on the trans input shaft (3 clicks)? After trans was bolted to block, there should have been a gap between convertor and flexplate (the convertor bolts should have drawn the two together). If not, you probably wiped out the drive tangs for the trans oil pump when you started vehicle (wasn't engaged properly). Hopefully not.

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I have a 97 jeep grand Cherokee with a 98 motor same tranny. That thing is burning 4-5 quartz every 150-200 miles. Its not in the coolant an its not smoking. An no oil leaks. i like to now why its...


at what speeds? 50 , 90 (we have 85mph highway in texas)
pCV working,? if not it may burn oil.

ok oil can not just go away , like tax money out of pocketes or deflation.
not ever.
1: stolen oil, nah.
2: burns it, sure.
3: leaks it , no you'd see it at every stop.
4: leaks it to cooling system., no. the down draft 02 does nothing but checks cat for health so does nothing, releated to this.

it's burning it. but you dont see it because you are not following you.
I see it, i smell it.

bad rings.
bad valve seals.
or PVC packed and crank case pressures on the moon(high)
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Hi i have a 97 chevy with the vortec 5.7 with 312.556 and i was thinking of using seafoam on my engine because of carbon build up but i also heard with that many miles seafoam would damage my engine.


Seafoam added to fuel should not cause problems. You may find those who say oil additives such as Marvel Mystery oil may clean engine deposits leading to excessive oil consumption/smoking. That's a lot of miles for any engine without an overhaul. Good luck.

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I have a 1995 K2500 that had the motor changed to a HD 383 Stroker before I bought it / It also has vortec heads. The oil pressure seems really low to me. About 2 to 5 lbs at idle. About 30 to 35 lb


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Can you put vortec heads intake and factory fuel injection on an older non vortec 4.3 engine block for a 97 blazer 4x4?


yes tbi and vortec are compatible only thing changing is the intake gaskets make sure to order the gaskets according to the intake you are using i hope i was helpful please let me know if you have further questions and i'll be glad to assist you.

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You could take ou the fuel pump relay and replace it with another one just like it from the fuse box under the hood. That will let you know if the relay is bad.

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firing_order.gifHere is a wiring diagram from distributor cap to spark plugs. the firing order is 1-8-4-3-6-5-7-2. I hope this helps you.

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The # 5 cylinder is miss firing. not getting fuel. Could the injector just be stopped or the crankshaft sensor in gone.

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Oil pressure problem


Get a haynes manuel at advance auto parts. It will tell you everything you need to know to get the oil pump off, which is what the problem seems to be.

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