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Old 07-22-2019, 12:10 AM   #1
bluecrow76
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2006 ION-2 Quad Coupe
Dizzy 2006 Ion 2 coupe won't start after we got back from vacation - have spark and fuel...

Hello all! Long time user, first time poster. This forum has been helpful diagnosing issues in the past... many thanks to everyone! I'm so confused on this current issue and don't know where to look next, so I'm reaching out for some help!

We were out of town for 13 days recently. When we got back, my wife tried to start her 2006 Ion 2 coupe. It started and then died quickly. Subsequent attempts to start were unsuccessful. The starter was recently replaced (5/11/2019) and it appears to be functioning properly. We charged up the battery to make sure that wasn't the issue. We also tried jumping from another vehicle with no success.

The starter is turning the engine over and I have verified there is pressure on the fuel rail. I tested the ignition module and coils successfully (they were both replaced a few years ago). While pulling the plugs I verified that there was fresh fuel in the cylinders. I setup the plugs on the ignition coil pack, grounded the plugs, and did a spark test (with the injector fuse removed) and verified that they are all sparking very nicely (I have a video posted to my YouTube account but I can't post a link to it because I'm new... the video ID is EDkEvxhBk9g).

I also know the engine is being turned by the starter as the shop towels that I had used to plug the spark plug holes were ejected while I was testing. :-)

When you attempt to start you can hear the fuel pump priming, then the starter turning the engine, but no combustion.

Existing codes were P0106 and P0420. No new codes have been thrown since clearing and subsequent attempts to start.

So it seems the vehicle has fuel and spark... but no ignition... which colors me rather confused as those two things usually make a bang. Any thoughts on what I might be missing or what to check next? Thanks!

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Old 07-22-2019, 12:25 AM   #2
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2003 L-Series 3.0L Sedan
Default Re: 2006 Ion 2 coupe won't start after we got back from vacation - have spark and fue

If fuel is injected into cylinders and spark was verified, there are instances when the engine won't fire up but may flood after several starting attempts. Several failed starting attempts will flood an engine so a little known procedure from owner's manuals are overlooked - holding the gas pedal to the floor during subsequent starting. At low starting speed and a full throttle signal to the engine computer, the injectors are shut off. This allows only air into the engine to dilute flooded cylinders until plugs dry out and spark occurs. A sputtering startup follows. Clear flood mode. Try it. It should take one or two starts with wide open throttle to get the engine to startup.

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Old 07-22-2019, 04:22 PM   #3
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2006 ION-2 Quad Coupe
Default Re: 2006 Ion 2 coupe won't start after we got back from vacation - have spark and fue

Quote:
Originally Posted by fdryer View Post
It should take one or two starts with wide open throttle to get the engine to startup.
Thank you for the suggestion! I tried it late last night with the result being the same... no start. There was no change in sound either. I had a friend reply to my Facebook post that if there is fuel and spark it sounds like there is no air, and suggested I remove the air filter and make sure air is getting into the chamber. I know the air filter itself wouldn't keep ALL the air from getting in... is there something that could be shut preventing air from being present?

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Old 07-22-2019, 05:24 PM   #4
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Default Re: 2006 Ion 2 coupe won't start after we got back from vacation - have spark and fue

Nothing short of physically seeing the air intake tube being blocked or with the air intake removed to see the throttle assembly being blocked would stop all airflow into the intake system. It's usually presumed that air intake is a given when considering fuel, air and spark are needed to make engines run. We're assuming, based on your descriptions that you saw fuel on spark plugs and saw spark jumping across spark plugs. I used your descriptions to suggest possible flooding after several repeated starting attempts failing to get the engine to run. I've had it occur to my car once or twice and remembered to hold pedal to the floor for subsequent starts that usually resulted in startup. Virtually every vehicle using EFI systems have the instant starting characteristic in summer and winter to the point hardly anyone remembers what hard starting means and associating flooded engines in rare instances.

Another way to determine whether this is a fuel or spark issue (and presuming air isn't blocked from the intake system) is to spray starting fluid into the throttle assembly then try starting again. You may have to use a charger to keep the battery fully charged. Spraying starting fluid guarantees fuel fed into the engine and count on spark to ignite the flammable ether. Either the engine sputters to a start or not.

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