2004 Aerio will crank but wont start

  • 94,518 MILES
We are looking into buying a car for our daughter. It is a 2004 Suzuki aerio. The owner has taken it to many mechanics and they have not found any problems. However, the car wont start. It will crank and try to start but wont turn over. I am wondering what some issues could be before we buy the car and it becomes hopeless. Any thoughts?
Do you
have the same problem?
Tuesday, February 18th, 2014 AT 8:47 AM

1 Reply

All I can give you is the testing sequence.

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.
Was this
Tuesday, February 18th, 2014 AT 9:37 AM

Please login or register to post a reply.

Recommended Guides