I have a 2007 cobalt ss I just had the motor rebuilt it will crank and crank but will not start, no codes I checked timing and timing was dead nuts, fuel is there and spark plugs are sparking, when I try To start it and pull plugs there wet with gas the car will not start compression is 140 across the board...it's a fresh motor and help is appreciated!

 

How are you testing the spark plugs firing

 

Pulling them out and grounding them watching the spark

 

Make sure the cam sensor is in the right position

 

cam sensor. unplug it and see what it does

 

Put the motor to TDC and adjusted cam sensor still just cranks, unplugged it it does the same thing no codes I'm lost

 

If the plugs are wet they are probably screwed. Throw in some new ones and see what happens. I had starting issues in the winter crank and crank wouldn't start. Changes the plugs and started first try.

 

Remember every time you try to crank it it is pouring in fuel so let it sit a few minutes after each try or the fuel will start to puddle. Also if you have been trying and trying the fuel may have worked its way down between the rings and your oil may be screwed to. pull the dipstick and if it smells like gas you gotta do an oil change to.

 

Ok. You covered 2 sides of the fire triangle. What's missing? What haven't u made sure is being read and accounted for? AIR. Are the sensors even plugged in?

 

well 140 psi is low even if it had 100k on it...

 

R u sure u dont have the cams swapped around?

Also wat cylinder did u put at tdc?
Also its just not any tdc has to be the compression stroke on number 4

 

Cylinder 1 to dead center everything's plugged in I will give new plugs a shot maybe under compression there not working? I figured 140 was okay for a fresh motor without rings being seated yet

 

The cam sensor has to be lined up on number 4 compression stroke.

If u lined it up off number 1 ur 180* off

 

I thought the book said #1 cinder compression stroke

 

how to time the cam sensor housing

 

So I should retime it off cylinder 4 then adjust cam sensor?

 

I see you're new here, but the guys who are giving you advice in this thread are old heads. Take their word as gospel. Just do the re-time.