Sr white smoke from exhaust......help

[lucas240sx]

Fresh rebuilt sr
Spark plugs are covered in oil and so is the pistons
What can cause this?
could it be from rings not being set yet?

The hose to the pvc did have a crack, I'm looking for a replace for it

I haven't driven the car since I kept having leaks from hoses under the intake and oil from the pan
I have a 4 day weekend coming up so I'll have more time to mess with this thing


http://youtu.be/9GkmtlYqzuE

http://youtu.be/PZG53LqkNq0

[angel mkiv]

I just rebuilt my sr20 and after starting it a couple times while making sure it was ok and not leaking I checked the plugs I didn't see any oil...so I wouldn't think its the rings not seating yet..try a compression test and are all 4 soaked with oil?

[lucas240sx]

Yea looks like all 4 of them are

[Kingtal0n]

Leakdown test, you may have installed the wrong valve seals. I have seen that happen before more than once, something about the part number is wrong if you order them from a certain place.

There are a few places oil can come from but check that, and the valve cover gasket (around the plugs) first.

[lucas240sx]

I bought the super tech valve seals
I'll do a leak down and compression test this week
Also I can smell gas through the oil filler cap

Could this be from oil rings not set right

[slideslidegnarslide]

Yeah fuel is getting passed the rings

[lucas240sx]

I did a leak down test
Put each cylinder a TDC
Set it at zero.....all 4 went straight to 100
I turned up the pressure to 45 so I can hear where is leaking from
All come out the of the valve cover which indicates rings

Brand new cp rings on my cp pistons
Shop set rings wrong or honed to much off the cylinder walls?

[lucas240sx]

I talked to my builder
He is thinking that my old gas could have turned to like varnish and make the walls smooth

So I'm going to try to pull out the old gas, put fresh in along with injector cleaner
Go for a drive if possible (will be my first time to drive it since rebuild) and put it in 5th at 30 mph and drive up to 50 mph then let off to 30 mph
Do that 8-10 times to help get the rings to seat
Then do leak down again

[angel mkiv]

I would use break in oil also and your car is tuned for your new setup right?

[lucas240sx]

I'm using part store brand 30w
Factory setup besides forged pistons and rods, and bc valve spring and retainer

[Kingtal0n]

I did a leak down test
Put each cylinder a TDC
Set it at zero.....all 4 went straight to 100
I turned up the pressure to 45 so I can hear where is leaking from
All come out the of the valve cover which indicates rings

Brand new cp rings on my cp pistons
Shop set rings wrong or honed to much off the cylinder walls?

you realize there is a compression stroke, and an exhaust stroke, ... right

[lucas240sx]

No I was not aware of that
I will try it again with the connector in and rotate the crank till I hear compression and try again
Thanks

[jza80king]

First, your videos were set for private so we can't see anything...atleast I wasn't able to. Also as already noted make sure you are on the correct stroke cuz when I did a leak down test on my car I too made this mistake. If your spark plugs are swimming in oil, lemme ask did you change the valve cover gaskets? I also had similar issues with the valve cover leaking in spark plugs 3 and 4 so my plugs would always have a lot of oil. For the leak down compression test, general rule of thumb is air escaping from the throttle body means leaky intake valve, air escaping from the exhaust tail pipe means leaky exhaust valve, air escaping from the radiator cap means blown head gasket and air escaping out of the oil cap means maybe rings not sealing.

[lucas240sx]

All gaskets are new except one spark plug ring
But those gasket leaks it would be in the spark well not into the pistons right?

[joe3180]

How old was this gas you had in there anyway?

Either way take a good look at the oil when you take the pan off to see what kind of damage there may or may not be.

Plus pull the plugs to see how they are doing.

[lucas240sx]

The plugs covered with burnt oil
Pistons covered in oil
I have changed the oil twice bcuz of the gas smell
Never had any metal shavings

[lucas240sx]

I double checked the leak down
Made sure each piston was on compression stroke and at TDC
Still coming up 100 leak on each
This is nuts

[jza80king]

I double checked the leak down
Made sure each piston was on compression stroke and at TDC
Still coming up 100 leak on each
This is nuts

so with the test, you need to determine where the air is coming from. A leak of 100% means either that tool you have is not working properly or you have a huge leak....if it is a huge leak then you should hear/feel air coming out of somewhere. You should be able to feel air or at least hear the air. Go feel your exhaust tip and plug it with your hand. Does the sound tone change? Do you feel air coming from the exhaust? If so then you have possible exhaust valve leaks. Open up your throttle body and do you hear/feel air there? if you do then that is an intake valve leak. Feel the radiator spout, does the sound change if you put your hand over it or can you feel air coming out from the radiator spout? If so, this means the head is not sealing correctly and a possible BHG. Lastly, take the oil cap off and do you hear air? If you plug the oil spout, does the tone of air change or can you feel air? this would mean your rings are not sealing correctly and air is escaping through one or all rings.

[lucas240sx]

It's the rings
I coming from the oil cap and dipstick
Complete rebuild and all the rings are leaking
I'm hoping to get it ready tmrw to drive it for the first time, seem if that will help the rings expand and seat
Also I can go a leak down again with the engine hot

[jza80king]

It's the rings
I coming from the oil cap and dipstick
Complete rebuild and all the rings are leaking
I'm hoping to get it ready tmrw to drive it for the first time, seem if that will help the rings expand and seat
Also I can go a leak down again with the engine hot

If you need to get by for a while, I know guys have ran slightly thicker oil and checking it religiously. This may or may not be a good choice for you depending on your weather and how cold it gets.

[lucas240sx]

It snowed today, it's suppose to warm up tmrw
The car is my toy
I have 2 other dd ' s
I need to drive it and see if anything changes before I pull it so I can tear it down and look it over
I'm so mad that I don't care anymore
It's been a long 2 year project

[lucas240sx]

Does anybody have experience with this?
Fresh rebuild the has in been idled and 100% leak

Has anyone down a leak test on their fresh rebuild before driving it?

[jza80king]

Does anybody have experience with this?
Fresh rebuild the has in been idled and 100% leak

Has anyone down a leak test on their fresh rebuild before driving it?

So you are certain it's rings? Any chance the leak down tester is faulty? Have you tried another tester?

[lucas240sx]

Turning up the psi I can hear air blowing through the oil filler cap and dipstick....mean it's blowing by the rings

[jza80king]

Turning up the psi I can hear air blowing through the oil filler cap and dipstick....mean it's blowing by the rings

I understand that, just thinking of other possibilities to avoid having to tear down your motor again. New CP rings and pistons, it doesn't make sense to me.

[lucas240sx]

Doesn't make sense to my builder either
It's cold now, but when I get a chance I'm going to try to drive it and see if I can get the rings to seat

[jza80king]

Doesn't make sense to my builder either
It's cold now, but when I get a chance I'm going to try to drive it and see if I can get the rings to seat

What if any break process is required for CP rings/pistons? What weight oil are you on? How many miles have been logged since the rebuild? It's crazy that ALL rings are leaking.

[lucas240sx]

The motor has.never been DRIVEN only idled
I have straight 30 weight oil

[jza80king]

The hose to the pvc did have a crack, I'm looking for a replace for it

Did you replace the PCV valve and hose? this can cause issues with blowby and other things.

Checkout this link http://www.agcoauto.com/content/news/p2_articleid/197 and read the section specifically on 'how a PCV Valve works' it talks about the difference between only idling a car and driving it. Maybe this has something to do with your issue?? The hose could be clogged and with how inexpensive the PCV is, although you can hear it when you shake it I would replace it.

[lucas240sx]

No
I did clean the valve with break cleaner. If you shaken it, you can hear it moving inside

[jza80king]

No
I did clean the valve with break cleaner. If you shaken it, you can hear it moving inside

The PCV is a cheap part, even if you can hear it when you shake it I would replace this because it could still be bad. Dude i'm stumped at this point I would try driving the car a few miles and then retry the leakdown test to see if the rings might have seated. Check your oil too before and after the drive to see if you notice anything suspicious.

[lucas240sx]

I will take your advice once the weather gets a little better
Oh I also.have to drop my fuel tank and try to remove some rust flakes from the inside

[jza80king]

I will take your advice once the weather gets a little better
Oh I also.have to drop my fuel tank and try to remove some rust flakes from the inside

Rust inside the tank? Shit man, you might need to get a new tank, even if you remove said rust it's probably gonna corrode more after you put it back again.... I'm sure you already know but when you drive it, take it easy maybe stay under 25mph and under 3-3.5k rpm.

[lucas240sx]

I was told to put it in 5th at 30 mph and drive up to 50 mph and let off the gas back to 30 and go back to 50
Always staying in 5th

[jza80king]

OK i really don't know what the protocol is for CP rings and pistons but if that's what you were told then OK.

[lucas240sx]

Engine builder told me the old timers would do this
Idk what cp wants

[jza80king]

Engine builder told me the old timers would do this
Idk what cp wants

I would contact CP and see what they say. There are a lot of 'tricks' but just cuz something works on a small block Chevy or a Cleveland 351 that doesn't mean it will work on an SR or KA motor. You said you have to wait for the weather anyway, might be a good idea to ask unless someone else can share their personal experience with CP rings.