Failed Leakdown test

[Joey_Stacks]

I made the wise decision of waiting for my leakdown tester before I did anything more than putt around the yard on my new piston. Finally got the tester and no lie... I got nothing, zero, zilch and I have no chance of getting any help until the weekend. So I cant have someone pumping it furiously while i spray around everything looking for the problem. How can I do this by myself?
Yes I rebuilt this myself
Yes it was my first top end rebuild
Couple issues to consider.. I did not use a flat plate to put between the rubber and the exhaust plate fitting thing (help me out here I dont know what its called) will this make a difference?
I have a theory or 2 but I want to hear what you guys think

 

[sheeblast]

i am lost. so when you pump it up, you have zero psi?
ya something is majorly wrong.
make sure you put the tester in right.
make sure all your gaskets are tight.
you have pictures of you testing it?

 

[acezeesawtooth]

is the tester the rights size to fit in the rubber intake... you should have some pressure something might be wrong with ur hook up id check that out and redo the test and what are you talking about the exhaust? is the exhaust hooked up to it?

 

[Joey_Stacks]

one pump it jumps and drops everything is tight that is the first thing I checked and yes its in right

 

[sheeblast]

you got pictures? something sounds wrong.
try this, spray everything with soapy water first, then pump it up.

 

[Joey_Stacks]

no exhaust is not hooked up http://www.blasterforum.com/do-yourself-20/videos-how-perform-air-leakdown-test-31464/ picture on first vid shows what Im talking about

 

[Joey_Stacks]

you got pictures? something sounds wrong.
try this, spray everything with soapy water first, then pump it up.

not a bad Idea.... shoot the colts game is starting

 

[acezeesawtooth]

well if the exhaust port is not sealed up it will leak like that... it needs to be sealed to create a pressure chamber to do the test

 

[Joey_Stacks]

I got it I pinched the crank case breather and pressure went straight up

 

[acezeesawtooth]

good... glad its working...

 

[Joey_Stacks]

So what does that mean? do I need to replace crank seals or is this a splitting the whole damn thing project?

 

[Joey_Stacks]

good... glad its working...

I dont think thats good I think that means that there is a massive internal leak

 

[acezeesawtooth]

im not sure on that im thinking its gonna be the worse of the two though

 

[Zwiser]

that means your cank seals are bad

 

[Zwiser]

not that bad $20 for both you have to get a fly wheel puller tho

 

[Joey_Stacks]

shoot how much are those?

 

[acezeesawtooth]

13 bucks or so on ebay for the puller

 

[Joey_Stacks]

I can swing 13 bucks +20 for the seals hopefully I dont have to split it anyway cause then Im gonna be scheming on a stroker crank

 

[YZ Otis]

I got it I pinched the crank case breather and pressure went straight up

Unfortunately, that sounds like a clutch side seal leak or a leak between case halves.to me.

 

[Joey_Stacks]

could I pinch off the vent tube and then test the case halves or would it be all internal?