So I was in Tampa today at USF buying a book and it started raining torrentially. So, I decide to make a run for it to be back in saint Petersburg to go to work...get to the car and come to an intersection, As soon as I get through it "woosh" and the car stopped. I knew immediately it had hydrolocked. So I get it towed home after me and 2 good sumeritans (sp?) took the spark plugs out and cranked it, the pistons shoot the water hella high.
Me and my dad have been working on it ever since. After vacuuming out the cylinders, I got some Marvel Mystery oil and put a little bit into the cylinders, let it soak for 2 hours and vacuumed that out. Realized I had no fuel, got a MAP sensor and all is well with that. I have "cold compression" in each cylinder albeit low like 30ish psi, but thats coz its cold I figure. It has spark which is erratic and has a bit of a delay. My crank turns fine and all of that. My guess is that another sensor is out. Earlier it threw a p0351, checked the connections to the ignition coil, bought new spark plugs and have relatively new wires...never threw that code before the water incident. Timing belt is still intact as far as I can see..., dont think it jumped I wasnt even going 15 mph, and as soon as I realized I was in deep water/shit, got off the gas pedal and pressed the clutch

Maybe I drowned the crank sensor... it was like 6 inches or water.... but I dont get why it would still fire if that happened...

It throws no other codes....
Before today didnt have any recent problems with cranking (8 mos ago ASD)
Bottom line car turns over, wont start....
If this car ever starts again, Im getting a short ram intake, period.

Even if the engine is dead cold? I get that only compression cranking it for like 7 seconds after its been sitting for 9-10 hours. I thought that compression tests have to be done at operating temp in order to be accurate... meaning the car has to actually run first...
I also have no water in my oil, so I doubt any got past my pistons/rings

I 2nd Driggs diagnosis. You hydrolocked the engine. Remember water does not like to be compressed. You probably realized a bit late and the motor sucked in a healthy dose of water.

30psi hot or cold is extremely low. Normally it should be between 170-210 depending on mileage. My Neon with 170K on the odometer still cranks out 160-165 psi across all four cylinders when cold.

Donor motors can be had for cheap. Check junkyards, or Neon.org for them. I think I came across a few while surfing through there that might be close to you.

Next time purchase a bypass valve or remove the Lower section of the CAI before driving in the rain.

Good luck.

-K-

Ok so I got it started yesterday and the idle was a little rough and it smokes white (Mystery Oil that I let soak in the cylinders for 24 hours) for about 30 minutes, then stops. Drove it around the block and its a little sluggish, but she purred, no abnormal sounds... but then again all I had was a wash cloth clamped over the throttle, so maybe thats why she was a little slow. I did a compression test today after all of the Mystery oil was burned off and have a 180 across +/- 2 and I have no smoking.
I also cut my CAI and now it sits in front of the top part of my fan, gonna run and get a new filter and High Mileage Fuel system cleaner (Slick 50) and fill up on high grade.
Prolly have other sensors out, Ill give them another day to dry out before I replace any of them.
Also, todays idle was a little better than yesterday.

Must be something about the Florida sun

Lesson learned... CAI's are the Devil!!!!

WOW congrats. Looks like you dodged the bullet.

-K-

she must be cute

I eat emo kids for breakfast

1995 Eagle Talon (SOLD)
72' SuperBeetle
72' Standard Beetle
56' Deluxe Beetle

Regardless of how it's running now I'd be a little careful. I would NOT boost that motor regardless of how little boost you plan on running.

I'm also a previous victim of a hydrolocked motor. I got my motor running well also but it left it's damage ... just couldn't be seen until I pulled the motor apart. I had 2 bent rods. Still made decent compression 170-180 on the cylinders.

It'll probably have a great life as a daily driver but I wouldn't try pushing the limits on it.

Just my .02

-"Easy Mac"
05 Mazda RX-8 (RR8 #88)
99 Eclipse RS 398whp & 372lb-ft

How do you get 30 PSI on one day, then 180 on the next? Possible you made an error using the compression tool on the first day?


Eyeballing the ring gap - ha ha, yes we still get a kick out of that, it never gets old Driggs.

2gnt: '99 RS-T, killed by a toyota, pending rebuild...
Daily: Volt
Daily #2: '99 EVG ebike- STOLEN by PEDRO

Does the filter make any difference?

I have a real K&N oily filter on my CAI and it took literally immersing it completely in water to hydrolock my engine (good I was going super slow and that saved it from death).

1993 Eagle Talon TSI AWD: balance shafts, cruise & AC removed; 16psi, Dejon intake & UICP, ported 14b, EVOIII mani, ported 2G O2 housing, 2.5" Buschur dp to 3" Thermal exhaust, datalogger, front strut brace, prothane motor mounts

1995 Eclipse RS U-Boot; Tokico Illuminas, GSX front brakes, ST front swaybar, short shifter, CAI with K&N filter, rear disks and swaybar, front upper and rear lower strut braces, beater exterior

Im not a guy...
But anyways yeah I did have a full CAI without a bypass valve, it was only submerged like halfway in the water, it didnt matter. The car runs fine now. After I finally got it started my cold air became a short ram before it left my driveway again...
Only thing is that it took out my oil pump, I guess, but it was probably on its last leg anyways. After a day of driving it, on tuesday,the dummy light popped on and I was like not again...coz once, I had debris in the sansor and it gave a false read, but luckily I refused to drive it and borrowed my dads car for the rest of the week. The light would only come on under acceleration, so I took it easy for the last 2 blocks home. Anyways, installed an oil PSI gauge same day with steel braided line started it and it read low as hell. So I put it up on jack stands. Got around to changing my oil pump today, reads like 57 psi at cold idle, its still on jackstands coz Im too lazy to put the drive belts on tonight ... Ill do that tomorrow. I have no noise coming from my crank or anything, thank god
Earlier this week I was doing good deeds trying to get some good behavior points in hopes that I wouldnt have a spun bearing. Guess it worked...

I contributed to the Wiki!
EVO IX - just a really expensive boost gauge and a K&N air filter
96 Eclipse RS -awaiting registration and inspection
95 Eclipse GS - parts car
Mods/Profile - http://www.2gnt.com/index.php?d=cs82685