Question about 1997 Oldsmobile Eighty Eight
Popping sound and car wont start but does crank
You wll have to pinpoint what the engine is missing...
All three of these are tested when the engine is being cranked over. There are two way of checking for fuel. Fuel pressure and fuel trigger. Both are very important and must be present for the engine to start. Fuel pressure is self explanatory. You just hook up the gage and see what the reading is. Fuel trigger is check with a noid light. The injector gets unplugged and the noid light gets plugged in to the injector clip. With the engine cranking over, this light must blink. This is the signal to the injectors from the computer. You can have all the fuel pressure in the world, but it wont matter if the injector is not pulsing gas into the cylinder like it should.
Compression tester, spark tester, fuel pressure gage and noid light are all accessible at your local auto store. All three tests play a very important part in diagnosing a no start condition. Be extremely careful when doing these tests.
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Posted on Feb 13, 2012
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Posted on Jan 02, 2017
3.8 are known for ignition trouble but first use the fuel release valve located on top of engine under a screw cap to see if your getting fuel. It takes 4 things to make engine run fuel spark air and compression. But most likely the Ign control module or crank sensor. So try this
1) check the fuel pressure
2) check for spark
3) compression test
Posted on Apr 26, 2009
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