No start?

2008 FORD FOCUS

220,000 MILES • 2.0L • 4 CYL • 2WD • AUTOMATIC

Q33

MEMBER
1 POST

Recently my thermostat blew on me, and I haven't changed it but I had it looked at and someone said something might be wrong with my key because everything engine wise seemed okay (starter, spark plugs, battery etc.,). so I'm really confused, because I hooked it up to a scanner and it read a cylinder 4 misfire, honestly have no idea what's going on.

Dec 6, 2022 at 3:31 AM

JACOBANDNICKOLAS

✓Experienced Mechanic
110,240 POSTS

Hi,

In most cases, a crank no start is the result of either a fuel-related or ignition-related issue. However, if the vehicle was severely overheated, other damage may have occurred.

Here is what I need you to try:

First, see if the engine starts using starting fluid. If it does and then stalls, we know it is a fuel-related issue. If there is absolutely no change, I need you to check for spark at the spark plugs.

Here is a link that explains how to check:

https://www.2carpros.com/articles/how-to-check-for-ignition-spark

When you first said the thermostat blew, I suspected that coolant was sprayed under the hood. If that is the case, we may have an issue with the crankshaft position sensor. The aforementioned testing will let me know if that is a possibility.

Also, if you can record the engine cranking and upload it for me to hear, I should be able to identify if there is a compression issue.

Let me know what you find or if you have other questions.

Take care,

Joe

Dec 6, 2022 at 9:12 AM

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