Running fine then died. Wont start

2011 MAZDA CX-7

148,545 MILES • 2.5L • 4 CYL • 2WD • AUTOMATIC

STEVEN1984

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So was driving fine. Nothing wrong! Had car come up beside me flashing me down. Had white smoke coming from under car. Pulled off interstate came to stop to wait for traffic. Car died and would not start back up. White smoke was coming out of oil cap. Has oil in it reads full on dip stick. Coolant was little low but not bad. Been setting now two weeks. It turns over but won’t fire. Almost sounds like no compression. Hooked code reader up cause now engine light on. Gives me one code P0117 Engine Coolant Temperature sensor. Any ideas on what could be problem? I’m stuck :( Thanks

Nov 22, 2021 at 3:04 PM

KASEKENNY

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I suspect this overheated and warped the head. If it is cranking like there is no compression, then this would fit, and the white smoke as well fits this issue.

https://www.2carpros.com/articles/engine-overheating-or-running-hot

Based on this info we need to just jump to doing a compression check.

Here is a guide that will help with doing this:

https://www.2carpros.com/articles/how-to-test-engine-compression

I would do a compression check because the engine is not starting and that will confirm this issue. However, here is another guide that will help with this type of issue.

https://www.2carpros.com/articles/head-gasket-blown-test

Let's run through this and let us know what the compression is, and we can go from there. Thanks

Nov 24, 2021 at 2:03 PM