Showing the crust on the top of the piston. How can i get to the ones that are halfway down to clean them. Thanks

 

Rotate the crank clockwise.

 

Is this the correct procedure?
"there should be markings on your crank pulley that line up when the motor is in TDC. Make sure the car is in neutral, put a socket over the crank pulley and turn it until it lines up."
Which direction should I turn?
Thank you.

 

Yes. Clockwise.

 

Timing would be an issue if you have the timing chain off and you are turning the crank.

 

Yes, if the timing chain is on...turn it to your hearts content. Then simply align the marks when you're done cleaning or before you change the gears and chain (if you even plain on doing that?). I was going to say, "or before you drop the distributor in"....but then I thought...that's to old school for this project.


Yes, being primarily a diesel mechanic for the last twenty years has lead to some missed changes elsewhere. Every time I have to think about making a repair on a gas motor...there's some "remembering" that has to take place.


Brian.

 

We got the crusty stuff out from all of them.

 

I think I see your reflection in that one!

 

Can this be cleaned also like w did on the pistons?

We cleaned the top of the pistons. Is it also okay to clean the grime on the valves?

 

I always remove the valves and clean them by hand. They are hardened steel while the head is much softer alloy, so trying to clean them in situ can sometimes lead to gouges or other problems if your scraper (or whatever you're using) slips off the face of the valve.
In addition, you quite often get carbon buildup along the valve stem, especially if the stem seal has been leaking and letting oil-laden gas past. Only way to clean that is to take the valve out.
Oven cleaner actually works really well on valves and on the combustion chamber, but you have to be careful to only leave it on the alloy for a few minutes because it can start to eat it away if you leave it too long.