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This is a long story but I will try and keep it short.  I pulled the head on this vehicle (120,000 miles, 2.2L with manual tranny), thinking I had a crack or a leaky head gasket.  While out, I have a valve job done, pulled all 4 injectors and had them checked and cleaned, replaced the timing chain, coolant temp sensor, etc.  Put it all back together and the engine promptly floods and won't start - I think it is hydrolocking.  I try and start it after the first few attempts, it just burps once and then the starter won't budge the engine.  I pulled the plugs and they were soaked with fuel, disconnected the fuel pump relay and cranked the engine - gasoline spewing out the spark plug holes.  

I disconnected the injectors and checked with noid lights and they seem to be blinking appropriately.  Left 3 of the 4 injectors unplugged, pulled the fuel pump relay and I was able to get the truck started on B12.  Actually got it to run for a while - long enough for the computer to set 2 codes - fuel injector circuit and random cylinder misfire (probably because I had the injectors unplugged).  

I have checked and rechecked all of my electrical connections and I can not find anything that I overlooked in reassembling the engine.  I am really stumped -  just put it all back together again and tried to start it and it did it again.  Cylinders are flooded and engine won't even turn over.  

Since it runs, I have ruled out ignition or timing concerns - is this a correct conclusion?

Can anyone help - I am really getting frustrated!

Thanks, ryan  

Check all your grounds.  

Sound like to much presure is geting to the injectors. This points to the presure regulator.  

Sound like to much presure is geting to the injectors. This points to the presure regulator.  

engine will run out of time...could be an issue...also might check for injector bleeding into cyl....if they were damaged upon removal...use a lab scope to check the noid...make sure that you do not have a short to ground in the injector circuit causing them to hang open all the time...what does the coolant temp sensor say?....first thing you need to do now is clean all the spark plugs, dry out the cyl(use compressed air), spray a mist of transmission fluid into the cyl(in case they are washed)...now take a compression reading low compresion will signal one of 2 things, one out of time...2 mechanical failure.....WHY WAS THE HEAD GASKET REPLACED?  If you have proper compression and strong spark(take a KV sample from each wire)....

Nick
ASE Master Auto Technician, L1  
ASE Master Auto Technician, L1, ASE Certified Service Consultant, ASE Certified Parts Specialist, Chrysler Certified Service Manager/Technician