davidc1

But expands 9% as it forms a solid when freezing.

2003AP1

Not for nothing guys, but the AEM V2 seems like more trouble than its worth..just my opinion..

SouthDakotaS2K

Ya know I'm sure there is a way to modify the elbow to drain the water out if it collects there. Adding a drain hose or installing a duckbill check valve would be easy. Not really Aem's fault there really isn't a much better way to make that pipe without cutting parts away. Either way it doesn't help this engine.

ManOnFire75

You guys scared me, I read this topic last night and I couldnt sleep thinking about my pipe inhaling all the water and hydro locking my car. I even had a nightmare that had happened .
To complete my restless night, before even visiting the restroom, I went and opened the hood checked and luckily my CAI sits farther into the bumper (smaller filter too) were the fog light assembly goes, so that hole s2000ellier was demonstrating with the ratchet and extender doesn't doesn't necessarily apply to me. Hell I even started my car, it seemed it was in a deep sleep since I hadn't used it for a day and a half due to SoCal rain (i know laugh it up) and its colder (laugh some more) so I know that was the cause for that start up today.

Even though this was a nightmare to read and have literally, I learned new stuff and Ill probably put some tape on that hole for extra measure. Despite all the rain the area around that hole and the hole itself was dry.

Off topic, yes, just sharing my 2¢ since the OPs issue started with a AEM CAI.

-The more you know

davidc1

Again, all but the earliest AEM V2's have the duckbill valve. If you have the valve there is no issue. If you have a CAI that doesn't have the bend in the elbow where the tube sits at a lower level than the filter, you don't have a problem. When it rains, disconnect the downpipe and put a short ram filter on as I showed in the picture above. Relax guys.

Emil St-Hilaire

I say guaranteed as I've seen it first hand and know what causes it. Just open the butterfly. If you see water, there's the answer.

Any car that sits (especially for weeks in the rain) with an AEM style intake has a very good chance of this happening.
[/quote]

Bill,
way back when I was younger,we used to clean,(decoke ) engines,by slowly pouring the equivalent of a coke bottle of water in the carb,while keeping the revs around 2500 rpm's;never had a problem!!!
Can you explain why?

Billman250

The detonation of the water breaks up the carbon. When pouring slowly into a running motor at 2500 rpm (1 tsp per two seconds or so), the amount of water that enters the chamber in each firing stroke is never more than the chamber size itself.

Please do not try this at home.

We actually had a Ford Escort with a rod knock in my old shop many years ago where I used to work.

A Ford guru who worked with me said it was carbon on the piston top, hitting the cyl head, and water detonating would cure it. He was right. He did it right in front of me and I couldn't believe it.

In the case of the OP, a large gulp of water is sucked up all at once.

Emil St-Hilaire

Thanks,Bill.

cosmomiller

I can see carbon building up in antique cars with old school gas but I am mystified that newer cars would build up so much carbon as to interfere with running. I remember my old man flooring his cars from time to time saying he was "cleaning out the carbon".

When I changed out plugs in my S, Tacoma, and 94 Thunderbird's V8, I checked the cylinders with a flexible shaft LED borescope and every cylinder was pretty clean.

What the hell is this carbon thing?

Billman250

This problem was specific to the Ford 1.9L or 2.0L 4 cyl I don't remember.

The piston top to head clearance was very slim, and a little bit of carbon causes the piston to smack the cylinder head.