Working under Plenum....

[pabs324]

Is the best way to prevent hydro-locking to pull the fuel pump fuse while the car is on and make it stall?
Modified by pabs324 at 12:16 AM 5/2/2008

[oldmako]

PB Blaster is a release agent similar to WD-40, but seems to be the prefered one. Heath

If you can find it, this stuff makes PB Blaster look like calgon bath oil.

I recently replaced all the bolts on my boat boat trailer and NOTHING would loosen them so I gave up and fired up the sawzall. My slip mate showed up and handed me a can of this....all the bolts were free after one quick squirtMy trailer dunks in salt water 2-3 times per week and is 7 years old if that gives you an idea of the level of corrosion.

http://www.kanolabs.com/

Expensive but worth every penny.

[91-q45]

if im not mistaken, isnt hydrolocking when coolant floods the cylinders?

[oldmako]

gas on these mothers....

of course, coolant is always a possibility, a very uncool possibility.

[Q45tech]

Maybe we should invent a more descriptive TERM:PetrolockBenzinlockGazlockingIncompressible liquid locking

But then again we are hydral not hydro

[Q45denver]

Hydrolock

From Wikipedia, the free encyclopedia

http://en.wikipedia.org/wiki/Hydrolock

In automotive terminology, a hydrolock (short for hydraulic lock) is the immobilization of an engine's pistons by a liquid (usually water, hence the prefix "hydro-"). Hydrolocking occurs when liquid fills a cylinder on the intake stroke and, due to the incompressibility of a liquid, makes the compression stroke impossible. This, in turn, prevents the entire engine from turning, and can cause significant engine damage if one attempts to forcibly turn over or start the engine. Typically, connecting rods will be bent, making the engine uneconomical to repair

[edit] TreatmentRegardless of the cause, treatment is the same. Removal of the spark plugs will allow access to the combustion chamber. By inserting an irrigation syringe fitted with a flexible plastic tube on the end, you can suck out the liquid that infiltrated the combustion chamber. Once all the fluid is removed, the chamber should be sprayed with a liberal coating of a water displacing lubricant such as WD-40, and allowed to sit until the remaining water has evaporated. Once the water or coolant has been removed, inspect the combustion chamber for rust. The best option would be to remove the head, but a borescope or small flashlight and mirror will also work. Light surface rust will be normal, but if you see any heavy corrosion, it should be gently removed, and vacuumed out of the chamber. After inspection, pour a tablespoon of assembly lube (such as Marvel Mystery Oil) or clean engine oil into each combustion chamber. Attach a socket to the crankshaft, and slowly rotate the engine through a few revolutions. (Make sure that you turn the engine in the proper direction, see a service manual for proper rotation direction.) If you hear any clanking, or harsh scraping, you should bring the engine to a competent mechanic. After verifying that the remaining systems are free of water (electrical, fuel delivery, air intake, distributor, etc.), re-install the spark plugs and wires, and attempt to start the engine.

SeaFoamSome people have stated they think Seafoam can Hydro lock their motors. Used correctly this cannot happen. When drawn through an intake vacuum hose into the intake, and dispersed with air amongst all the cylinders, there will not be enough liquid in any one cylinder to cause enough incompressibility. For example, a Ford 4.6 liter V8 can hold (up to) 575 milliliters of fluid in each cylinder. 1/3 of a 16 ounce bottle of Seafoam is 158 milliliters.

[Q45tech]

a hydrolock (short for hydraulic lock) a liquid (usually water, hence the prefix "hydro-")..

That's the exact problem using hydro for water instead of hydra............the error is in using the o for an a. When HYDRA-LOCK should be used when referring to gasoline or oil.

Unfortunately the public may not know the difference.

[maxnix]

if im not mistaken, isnt hydrolocking when coolant floods the cylinders?

Any non compressible liquid. Coolant would additionally indicate head gasket failure, something that never happens on a VH45DE unless overheated.

[maxnix]

Some people have stated they think Seafoam can Hydro lock their motors.

The real question is why would one resort to a palliative like Seafoam?

[pabs324]

what is best way to prevent fuel from entering the engine when working under the plenum....

[maxnix]

Read the posts.

While engine is running at idle, remove fuel pump fuse. Release fuel filler cap.

[pabs324]

I did read that post and was just making sure that was the best way. should i then proceed to take the engine through a few cranking cycles or just let it stall after removing the fuse?

But thanks Maxnix thats the most straightforward post to that question

[96Qowner]

Just let it stall.

But that usually doesn't take all the fuel out of the rail either - you'll still spill some when you mess with the lines, so have plenty of towels to soak it up.

[pabs324]

ok sounds good

[Q451990]

The best way to be sure fuel doesn't spill from your fuel rails into the runners, is to remove them as a unit. Then pull the injectors from the rails on a work bench.

Heath

[pabs324]

Ok. That's how I was going to remove the injectors.

That's the biggest thing I'm worried about with this project