Engine fails to ignite during cranking - Mirage 3

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07-30-2017, 04:44 PM
SoundAdvice

Engine fails to ignite during cranking - Mirage 3

A day ago the car was moved about 10 yards with no problems. Next day the engine failed to fire up during several starting attempts. The engine turned but no ignition. Checking the fuses, there is power on fuse 3 which is intact. No OBD Diagnostic trouble codes were stored. No unusual dashboard indications. Any ideas?
Thanks
Simon
07-30-2017, 05:15 PM
inuvik

Quote:

Originally Posted by SoundAdvice

A day ago the car was moved about 10 yards with no problems. Next day the engine failed to fire up during several starting attempts. The engine turned but no ignition. Checking the fuses, there is power on fuse 3 which is intact. No OBD Diagnostic trouble codes were stored. No unusual dashboard indications. Any ideas?
Thanks
Simon

It's flooded, push the accelerator all the way to the floor and hold it there while cranking until the car starts. This has been reported a few times when the car was only started for a few seconds then shut off.
07-30-2017, 05:38 PM
SoundAdvice

Further news. I monitored the OBD codes while cranking and the engine showed signs of ignition. After 3 attempts the engine showed an increasing desire to keep going. After it fired consistently I took the car out to prove it wasn't a fuel blockage- it accelerated very well. So the moral of the story is don't let the engine run cold for less than a a minute I guess!
07-30-2017, 07:58 PM
inuvik

Quote:

Originally Posted by SoundAdvice

Further news. I monitored the OBD codes while cranking and the engine showed signs of ignition. After 3 attempts the engine showed an increasing desire to keep going. After it fired consistently I took the car out to prove it wasn't a fuel blockage- it accelerated very well. So the moral of the story is don't let the engine run cold for less than a a minute I guess!

There was recall here in the US to reprogram the ECU during cold starts for over-rich fuel ratios. Might be worth checking with the local Mitsubishi dealer there if it's available in the U.K. Looks like your closest dealer is Brighton Mitsubishi
07-31-2017, 03:05 AM
Pryme

Never heard of a FI car flooding. Crazy
07-31-2017, 03:24 AM
inuvik

Quote:

Originally Posted by Pryme

Never heard of a FI car flooding. Crazy

Strange for sure but it merits a mention on pages 5-18 & 5-37 of the owner's manual.
07-31-2017, 07:17 AM
Cobrajet

Quote:

Originally Posted by inuvik

There was recall here in the US to reprogram the ECU during cold starts for over-rich fuel ratios. Might be worth checking with the local Mitsubishi dealer there if it's available in the U.K. Looks like your closest dealer is Brighton Mitsubishi

This. Exactly this.

These cars are known to do this, and there have been a few other reports of it here.
07-31-2017, 07:10 PM
SoundAdvice

Vehicle ran normally today. Almost certainly was a fuel problem triggered by the 20 second run when cold. Thanks for your interest guys.
02-03-2018, 09:23 PM
BeanSproutExpress

Happened to me this week. Thanks inuvik for pointing to the pages in the manual. This fixed it! Half accelerator press got a few hiccups. Full accelerator press got ignition. Agreed, I wouldn't have guessed that EFI could flood an engine.

I was almost ready to call the tow truck, then found this post. This forum saved me again! Thanks all for contributing to an awesome forum!
02-07-2018, 06:08 PM
foama

Hey mate, you may want to look up this thread, because it simultaneaously lowers fuel consumption and reduces the overdone fuel enrichment when cold:

http://mirageforum.com/forum/showthr...ment-when-cold