2004 mitsubishi lancer crank no start

cranks but no start, only has an o2 heater sensor code. tested for 5 volt ref, has rpm signal, has injector pulse, checked timing with scope looks dead on with known good, couldn't hear fuel pump prime removed back seat has fuel pressure. doesn't run on alternative fuel. doesn't start with w.o.t. checked for spark but only on one plug wire. removed front o2 sensor to check for exhaust restriction. checked to see if egr was stuck open. any ideas?? even unplugged fuel pump cranked it tried to start it on brake clean to eliminate fuel contamination

Compression test? (Relative compression, maybe incylinder transducer?)

don't have a transducer. cranking compression sounds normal

Well if you checked for fuel pressure spark and injector pulse what else left?
How do spark plugs look?

You didn't say so, but I'm guessing you found there was indeed spark on the wire you tested?
Did you try a relative compression test with an ignition synch? Probably fine if your cam and crank signals matched a known good example.
2.0 or 2.4l in this one?

cant remember I think a 2.4 liter going to see what I can figure out tomorrow. had to call it a day

ok got it started and running. but its burning coolant very bad. pulled spark plugs and they were worn to 90 thousandths. put new ones in it fired up. but new plugs have coolant on them after 15 minutes compression was 150 across the board....

cheryl hartkorn wrote: ok got it started and running. but its burning coolant very bad. pulled spark plugs and they were worn to 90 thousandths. put new ones in it fired up. but new plugs have coolant on them after 15 minutes compression was 150 across the board....

Ask the customer exactly how deep the coolant gauge needle went into the red before it quit running. :lol:

This is why I appreciate Nissan and Ford sometimes. Like the Altima I saw yesterday, accessory belt fell off, found a P1217 Engine Over Temperature. Good to know!