hey i hydro locked my jeep the other day pulled it out and blew out the water and still no start, so i replaced the plugs, cap, rotor, and coil and still no start its not even trying. ive got fuel and i got air but im still not getting spark i guess. any ideas?

 

how deep did you get on my 94 4lt the ecu is behind the left head light might cause probs if filled with water dry all electrical boxs out and leave it for a bit out in the sun

 

it was the bottom of the door but i very well coulda splashed up that hi ill try that now

 

my air intake is next to the ecu stupid place for both if you ask me

 

Yeah, you either have water intrusion in the ECU or possibly CPS was effected by the dunking some how. I know you intalled a new cap and rotor but double check that there is no mointure inside the distrubutor. Also pull the coil wire off the coil and make sure that connection is dry.

 

hey buck you kno a ton so i bought a compression tester, #1 85psi, #2 65 psi,#3 70psi, #4 90 psi, #5 50 psi, #6 65 psi,what do you think?

 

bump

 

numbers are kinda LOW they are all supose to be 10-15% of each other... any chance you Bent a valve? when you turned it over did water pour out of the spark plug holes?
85-15%=72.25psi

 

yeah there was some water out of either number 3 or 4 i cant remember for sure

 

next step is a leak down test........i wold be cerious about #5

 

unplug the ecu check for moisture in the plug

how did you check for spark
are you getting power to the coil

 

i stuck a screw driver in the plug wire and held it close to the motor mount and watched the spark jump from the screw driver to the motor mount.

im really thinkin its the cps, i hope im right

but in the near future ill be doing new piston rings and head gasket

 

Your compression numbers really are all over the place. That is most likely due to high miles, though. The only one I see a real issue with is #5. The leak down test is a smart next move. You may have a bent valve or push rod in that one. If you're planning a rebuils in the near future, though. Problem solved. I you're getting spark from the coil wire, the 2 things it could be then is moisture or some other issue with the distributor or a CPS.

 

how would hydro locking cause a bent valve or push rod

 

so you have spark