engine bay cleaner?

[///M42 sport]

So far I've used simple green + pressure washer. What are the other cleaning solutions that breakup the grease/grime?

[Teaguer]

Pressure washer should take care of all your needs yo!

Also a can of Brake Clean will do good work.

[MR 325]

Gunk Engine Brite plus pressure washer = excellent.

Don't get the foaming one though, just the regular one.

[jlevie]

When faced with a dirty engine and/or engine bay the process I use is:

1) Start with a hot engine and get front of the car up on jack stands. Several
large pieces of cardboard under the engine area will soak up the grunge and
help prevent stains.

2) Using a putty knife, screw driver, etc., scrape off any heavy
deposits. Most of that will be on the lower part of the engine and you'll have
to get to it from underneath.

3) Spray a mixture of Gunk and diesel or kerosense on using a garden sprayer.

4) Scrub every thing you can reach using plastic bristle brushes on painted
surfaces and wire brushes on bare metal. Work heavily caked areas again with
the scrapers. Spray on more solvent mixture as needed.

5) Re-fill the sprayer with any concentrated detergent (Simple Green, pressure
washer detergent, etc) and spray everything down.

6) Using a garden hose set for a gentle spray, or better yet a plant watering
wand, wash down the engine and engine bay. You want to avoid any high pressure
spray as that may force water into places that you don't want it.

7) Spray on more detergent and go over everything with the brushes, then
repeat (6).

8) Leave the hood open and allow the engine bay to dry for at least 8 hours
before starting the engine.

Notes: Having the engine hot will make oil and grease easier to wash off and
the residual heat will help dry out any water that reaches electrical
parts. You won't get the cosmoline/oil stains off the valve cover on an m20/30
engine as they are baked on. The best way to clean up the valve cover is to
have it bead blasted or hot tanked, but you can get most of it off with paint
remover (with the cover off the engine).