I'm doing a Kreen piston soak since last night on a Saturn, 2oz per cylinder. This morning the front two cylinders are dry. Put 2oz back in those and topped up the 2 others. If that drain down is a good sign, would adding air pressure in the rears help? Like 100psi? The car runs great, just notice some light smoke at random times from the exhaust. Most of the time no smoke at all. I put 16oz in the oil 100 miles ago and figured I try a piston soak with the remainder.
piston soak leak down question
- Thread starter Dakota1820
- Start date
- Status
Originally Posted By: atikovi
I'm doing a Kreen piston soak since last night on a Saturn, 2oz per cylinder. This morning the front two cylinders are dry. Put 2oz back in those and topped up the 2 others. If that drain down is a good sign, would adding air pressure in the rears help? Like 100psi? The car runs great, just notice some light smoke at random times from the exhaust. Most of the time no smoke at all. I put 16oz in the oil 100 miles ago and figured I try a piston soak with the remainder.
I would use Seafoam but otherwise same thing, 2oz per cylinder and let it sit. Still, you should crank the engine with the spark plugs out to get it all out ~15 seconds and that way you dont have ANY left in those cylinders, and you can reinstall spark plugs without fear of hydrolock at all. The crud will fly out too that the Kreen or seafoam dissolved or broke up.
I'm doing a Kreen piston soak since last night on a Saturn, 2oz per cylinder. This morning the front two cylinders are dry. Put 2oz back in those and topped up the 2 others. If that drain down is a good sign, would adding air pressure in the rears help? Like 100psi? The car runs great, just notice some light smoke at random times from the exhaust. Most of the time no smoke at all. I put 16oz in the oil 100 miles ago and figured I try a piston soak with the remainder.
I would use Seafoam but otherwise same thing, 2oz per cylinder and let it sit. Still, you should crank the engine with the spark plugs out to get it all out ~15 seconds and that way you dont have ANY left in those cylinders, and you can reinstall spark plugs without fear of hydrolock at all. The crud will fly out too that the Kreen or seafoam dissolved or broke up.
This is a stupid question but I will go ahead and ask.
When you do piston soak, some of the cylinder will be at TDC and some could be at BDC and some in between. Does it matter? Do you want entire stroke of the cylinder/bore cavity soaked or only the top of the piston?
When you do piston soak, some of the cylinder will be at TDC and some could be at BDC and some in between. Does it matter? Do you want entire stroke of the cylinder/bore cavity soaked or only the top of the piston?
All your going to get with a piston soak is the rings. The object is to get coked-up rings to move freely in their grooves, thus sealing the cylinder again and stopping blowby and oil consumption.
Originally Posted By: Vikas
This is a stupid question but I will go ahead and ask.
When you do piston soak, some of the cylinder will be at TDC and some could be at BDC and some in between. Does it matter? Do you want entire stroke of the cylinder/bore cavity soaked or only the top of the piston?
Very good observation that some of the pistons are up and some are down. I have heard of people fillin the cylinders "all the way up with MMO" then cranking it to get as much of they can of it out before reinstall spark plugs (turn by habd or with spark plugs out crank the key) but in reality, the longer the soak the better. You are getting or dissoving and dislodging carbon from 1. the top of the cylinders 2. the rings. Un-stick the coked up gummed up carboned up (not sludged) rings, and the car runs and revs freer and you can feel it. There will also be a smoke show a la SeaFoam. You can do a piston soak over the course of three or four days if you want. 2 ounces a cylinder installed with a funnel appears to be the recommended. I have heard one person say something about how Seafoam soaking the rings could cause the ring to lose its comoression (?) but that has been determined to be less than reliable information (basically he said he put the spark plugs back in and one or more of his sylinders had no compression after the piston soak, so somehing loosened something. I can neither confirm nor deny but someone explained the workings of a cylinder head and said that is either impossible or unlikely.) Cranking the cylinders by hand would ensure "equal soak" while half are up and half are down.. but even in the ones that are "up" carbon comes off the top. A good way to check (if you dare) is take a clean penuch it to the top of the piston. Sort of redundant to say that it would come out black. And cover the engine bay when you crank it with no plugs, the Seafoam will come out as you want (no hydrolocking be they full or have 2oz) but it will go EVERYWHERE! Windshield, paint, everything. Cover it all.
The plume of smoke whether its carbon or not with Seafoam yields a freer-revving engine. I havd used heavy doses in multiple appsl of Seafoam to where the engine was so clean that NO smoke came out after the app, using brake booster line as well as piston soak. Over the top? Yes.. but couple that with 20-weight oil and people were impressed with what i did when they drove the car.
This is a stupid question but I will go ahead and ask.
When you do piston soak, some of the cylinder will be at TDC and some could be at BDC and some in between. Does it matter? Do you want entire stroke of the cylinder/bore cavity soaked or only the top of the piston?
Very good observation that some of the pistons are up and some are down. I have heard of people fillin the cylinders "all the way up with MMO" then cranking it to get as much of they can of it out before reinstall spark plugs (turn by habd or with spark plugs out crank the key) but in reality, the longer the soak the better. You are getting or dissoving and dislodging carbon from 1. the top of the cylinders 2. the rings. Un-stick the coked up gummed up carboned up (not sludged) rings, and the car runs and revs freer and you can feel it. There will also be a smoke show a la SeaFoam. You can do a piston soak over the course of three or four days if you want. 2 ounces a cylinder installed with a funnel appears to be the recommended. I have heard one person say something about how Seafoam soaking the rings could cause the ring to lose its comoression (?) but that has been determined to be less than reliable information (basically he said he put the spark plugs back in and one or more of his sylinders had no compression after the piston soak, so somehing loosened something. I can neither confirm nor deny but someone explained the workings of a cylinder head and said that is either impossible or unlikely.) Cranking the cylinders by hand would ensure "equal soak" while half are up and half are down.. but even in the ones that are "up" carbon comes off the top. A good way to check (if you dare) is take a clean penuch it to the top of the piston. Sort of redundant to say that it would come out black. And cover the engine bay when you crank it with no plugs, the Seafoam will come out as you want (no hydrolocking be they full or have 2oz) but it will go EVERYWHERE! Windshield, paint, everything. Cover it all.
The plume of smoke whether its carbon or not with Seafoam yields a freer-revving engine. I havd used heavy doses in multiple appsl of Seafoam to where the engine was so clean that NO smoke came out after the app, using brake booster line as well as piston soak. Over the top? Yes.. but couple that with 20-weight oil and people were impressed with what i did when they drove the car.
Skip the MMO, or seafoam. Instead go for GM Top End Engine Cleaner and also Techron Concentrate with PEA.
MMO works, but Kreen works better. Last time I looked for GM Top End Engine Cleaner (a year ago) it was not available anymore. I would only use PEA in gasoline (as per the instructions)
^Just buy Amsoil Power Foam insead.
It's really this simple.
If you want a hobby for weeks, start the cycle of adding PEA and checking for results.
If you want results TODAY, simply buy Kreen and use according to label instructions.
If you want a hobby for weeks, start the cycle of adding PEA and checking for results.
If you want results TODAY, simply buy Kreen and use according to label instructions.
- Status
Similar threads
