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Engine Will Not Turn Over after Oil and Coolant Change


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hubacek
New User

Nov 10, 2013, 7:51 PM

Post #1 of 7 (1417 views)
  post locked   post icon Engine Will Not Turn Over after Oil and Coolant Change  

1998 Pontiac Sunfire, 2.2L, 190,000 miles

I performed a routine oil change and at the same time drained the radiator to add an antifreeze mixture with fresh water. I change the oil routinely and have flushed the radiator several times this year as I was having overheating issues and never had a problem with my car starting. This time, the engine would not fire afterward. Is there something that I can do without having to tow the vehicle to my mechanic?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Nov 10, 2013, 8:18 PM

Post #2 of 7 (1409 views)
  post locked   Re: Engine Will Not Turn Over after Oil and Coolant Change  

About you you can do is go back over everything you got near and look for something that got messed up. I have no idea what you could have done.

Is the starter cranking the engine over normally?



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



hubacek
New User

Nov 11, 2013, 9:53 AM

Post #3 of 7 (1387 views)
  post locked   Re: Engine Will Not Turn Over after Oil and Coolant Change  

The starter is turning the engine over close to normal, but it is not even trying to start. I thought it would be the theft system which has never been activated, but the dashboard light is not flashing. I didn't touch anything except the drain plug on the oil pan and the drain plug on the radiator.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Nov 11, 2013, 10:24 AM

Post #4 of 7 (1383 views)
  post locked   Re: Engine Will Not Turn Over after Oil and Coolant Change  

  All "crank, no start" conditions are approached in the same way. Every engine requires certain functions to be able to run. Some of these functions rely on specific components to work and some components are part of more than one function so it is important to see the whole picture to be able to conclude anything about what may have failed. Also, these functions can ONLY be tested during the failure. Any other time and they will simply test good because the problem isn't present at the moment.
If you approach this in any other way, you are merely guessing and that only serves to replace unnecessary parts and wastes money.



Every engine requires spark, fuel and compression to run. That's what we have to look for.

These are the basics that need to be tested and will give us the info required to isolate a cause.

1) Test for spark at the plug end of the wire using a spark tester. If none found, check for power supply on the + terminal of the coil with the key on.


2) Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.


3) Use a fuel pressure gauge to test for correct fuel pressure, also noticing if the pressure holds when key is shut off.

4) If all of these things check good, then you would need to do a complete compression test.

Once you have determined which of these functions has dropped out,
you will know which system is having the problem.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



RoboDisko
User

Nov 14, 2013, 9:40 PM

Post #5 of 7 (1356 views)
  post locked   Re: Engine Will Not Turn Over after Oil and Coolant Change  

Ok, I'm definitely not a pro, but I think it sounds like you probably accidentally bumped or disconnected and forgot to reconnect an important wire. I'm still definitely not a pro, but if you don't want to/don't feel able to do full-fledged diagnostics on it, I would recommend looking through the areas you worked in and making sure all the electrical connections are good and secure by wiggling and pushing in, and keeping and eye out for something you forgot to plug back in.


hubacek
New User

Nov 15, 2013, 8:54 AM

Post #6 of 7 (1346 views)
  post locked   Re: Engine Will Not Turn Over after Oil and Coolant Change  

You are absolutely correct. I thought there was NO way, but I had disconnected the wire connection to the ignition sensor when I was changing the oil filter. my mechanic found it in 5 minutes. live and learn!


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Nov 16, 2013, 2:39 AM

Post #7 of 7 (1333 views)
  post locked   Re: Engine Will Not Turn Over after Oil and Coolant Change  

So right. "Live and Learn" You aren't the first or the last for something like that. I'll close this as solved and you may request it open again by any moderator,

T







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