Check the battery make sure it has enough cranking amps. Then check for spark and fuel. Pull out spark plugs and see if they arc when starting the Evo. Make sure fuel pump is turning on. Remove the fuel pump cover and you should be able to hear it run when cranking the Evo.

 

I pulled cams to replace lifters on a DSM. While working on the engine I left the hatch open which ran down the battery. When I attempted to start the engine, it cranked fine but no start. After charging the battery it fired right up.

Using the starter pulls down battery voltage. If the voltage is too low the ECU does not work.

 

No they did not. Machine shop confirmed my hydro test. Valves are sealing perfect according to them to. Ill start reassembly and install this weekend and update as i go

 

I was getting spark and fuel. All sensors where attach I double checked that as well. It was definelty loss of compression. With the spark plugs in the motor was still easy to crank by hand. And when i was trying to start it it cranked very fast. Compression tesr confirmed I was getting very little pressure in all cyl. Which made me think I bent valves. Turns out not to be the case. Not sure what else it might have been. I don't see a cam install blowing out all 4 rings. Cyl walls look fine

 

Could you have the cams switched on install?

 

I considered that but the intake cam does not have the threading on it for the cas like the exhaust does.

 

I would still double check your cam codes. Make sure both are the correct cams for your car. Post pictures with both cams set to TDC.

 

Well I found the issue. These are the intake cams. Left one is stock right one is hks. Was off

 

Now this one hks is on the left stock is on the right visually these match up

 

Now if in turn the intake cam about 90* they match. So why would the dowel pin be thar far off? Defective from hks

 

Oh man, what a goose chase!
glad you found the problem!

 

You are so lucky you didn't bend valves. It closed just in time to barely miss contact!
If the dowel wasat 9 o'clock position instead of 12 o'clock, then intake valves opened during compression stroke (delayed) but if dowel was at 3 o'clock position, then it opened at same time as your exhaust valves. If this is the case, your intake valves would make contact with exhaust valves. This could bend your valve guides and you (or shop) should remove springs and retainers to verify it's still perpendicular to valve seats and solid when valves are open. Springs will pull valves shut, but it could come loose when springs are compressed by cam lobes.

 

Her

Here to make it more weird. Intake cam matches that of a dsm cam. So this looks like I have a dsm intake cam and evo exhaust cam ?

 

Okay, it was advanced 90°, so you lucked out where intake valves were opened during compression stroke and closed just in time as pistons reach top.