Engine hydrolock from rain/puddle
08-08-2007, 04:45 PM
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Engine hydrolock from rain/puddle
Fixed a hydrolocked car today in 20 minutes....Just to get to word out...if you hydrolock from a puddle or rain, your engine may be ok. This is the 2nd S2000 I've had hydrolock and was able to fix very easily.
IMPORTANT: This must be done within 24hrs of the hydrolock incident. Rust will set in very quickly on the valves and rings. I recommend doing it right away, within the first 2 hrs.
Step one, DO NOT TRY TO START THE ENGINE! The leverage from the starter alone can break a connecting rod if the piston is in the right spot.
-Pull coils and spark plugs
-pull fuel pump fuse
-remove intake at throttle body, check for water. Open throttle plate, look inside intake MANIFOLD for water (not the cold air intake). Use a paer towel crimped on the end of a coat hanger to soak up any water. Leave intake off for now.
-crank the engine for 15 seconds, this will expell most of the water. Compressed air with a long nose blowgun will help dry the cylinders.
-Dry the spark plugs with compressed air, re-install.
-re-install coils
-re-install fuel pump fuse, try to start the engine. Give it a few good attempts. It may start, or it may cough out. Sometimes, it may require removing the plugs one more time and blowing them dry.
-once the engine is running, let it idle in the drive way till the rad fans come on.
-shut the car off. If the oil looks milky, change it. Water does not always get into the crankcase.
-remove the aftermarket cold air intake, and let the filter air dry. Remove water from the piping.
Smile, as you just saved yourself 5 grand or more
IMPORTANT: This must be done within 24hrs of the hydrolock incident. Rust will set in very quickly on the valves and rings. I recommend doing it right away, within the first 2 hrs.
Step one, DO NOT TRY TO START THE ENGINE! The leverage from the starter alone can break a connecting rod if the piston is in the right spot.
-Pull coils and spark plugs
-pull fuel pump fuse
-remove intake at throttle body, check for water. Open throttle plate, look inside intake MANIFOLD for water (not the cold air intake). Use a paer towel crimped on the end of a coat hanger to soak up any water. Leave intake off for now.
-crank the engine for 15 seconds, this will expell most of the water. Compressed air with a long nose blowgun will help dry the cylinders.
-Dry the spark plugs with compressed air, re-install.
-re-install coils
-re-install fuel pump fuse, try to start the engine. Give it a few good attempts. It may start, or it may cough out. Sometimes, it may require removing the plugs one more time and blowing them dry.
-once the engine is running, let it idle in the drive way till the rad fans come on.
-shut the car off. If the oil looks milky, change it. Water does not always get into the crankcase.
-remove the aftermarket cold air intake, and let the filter air dry. Remove water from the piping.
Smile, as you just saved yourself 5 grand or more
but, most try to start the engine after the stall 
I guess it's a knee jerk reaction 
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08-08-2007, 06:53 PM
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Originally Posted by PeanutButter,Aug 8 2007, 08:34 PM
Did the same thing when we sank a jet ski once
Pulled the plugs, opened the air box, ran the starter with plugs out for several runs of about 5-8 secs until all the water shot out of the cylinders. Did this as quickly as possible to avoid any internal corrosion.
