M20C not starting

[47U]

24 minutes ago, M20 Ogler said:

So I’m guessing I have a fuel or compression issue maybe. 

Does the throttle provide some resistance when pushed in which would indicate the accelerator pump is functioning?  Maybe less resistance on the first push in of the throttle, but more resistance on subsequent throttle actuations as the accelerator pump gets primed.

As far as compression (which is most likely NOT your problem), what were the cylinder compression checks at the last annual inspection?

[M20 Ogler]

47 minutes ago, 47U said:

Does the throttle provide some resistance when pushed in which would indicate the accelerator pump is functioning?  Maybe less resistance on the first push in of the throttle, but more resistance on subsequent throttle actuations as the accelerator pump gets primed.

As far as compression (which is most likely NOT your problem), what were the cylinder compression checks at the last annual inspection?

Compressions were 71,72,70,70 last March. 
 

Now that you mention it there is very little resistance when I pump the throttle prior to starting. Is the accelerator pump part of the carburetor? Because I just replaced the carburetor with a rebuilt one in September of 2023. 

[47U]

1 hour ago, M20 Ogler said:

Now that you mention it there is very little resistance when I pump the throttle prior to starting. Is the accelerator pump part of the carburetor?

Yes, part of the carburetor.  There should be some resistance when pushing the throttle in ‘briskly’… say in about one second.  Run the boost pump first to make sure there’s gas to the carb, then shut it off.

Be careful troubleshooting.  If the accelerator pump is working, excess raw gas will run out of a drain tube in the bottom of the air box.  There should be a short length of hose to guide that excess gas out a hole in the bottom in the cowling and onto the ground.  If that hose is not there, you don’t want raw gas to accumulate in the cowling.  

[N201MKTurbo]

If you think you have a fuel issue, remove the air filter, spray about 10 seconds of starting fluid in there and crank it. If it fires off and runs for a few seconds, you have a fuel problem.