Spark plug modification for vac/pressure test?

[PB]

Can anyone post a picture or explain how they modded a spark plug for use in vac/pressure testing? It seems simple enough but have never seen one.

 

[Brian VT]

I found a fitting in the air tools section at the hardware store. No muss, no fuss.
I'll try to remember to get specifics when I get home.

 

[PB]

I found a fitting in the air tools section at the hardware store. No muss, no fuss.
I'll try to remember to get specifics when I get home.

That is even easier.

I just assumed I wouldn't be able to find any fitting with that thread.

 

[Bob Wright]

I have a couple of modified spark plugs for different sized threads. I just break off the ceramic and poke the rest out of the center, cut off the electrode and drill and thread to suit to your testers fitting...Bob

 

[Modifiedmark]

Here, I found a picture of my homemade adapter.

Like Bob said, knock the center out, tap the hole and screw in the needed fittings.

 

[PB]

Thanks Mark. Looks like a 49SP attached to the hose.

 

[Modifiedmark]

Thanks Mark. Looks like a 49SP attached to the hose.

Yes, it is, that stupid manifold setup was giving me sealing problems. :bang:

 

[PB]

Yes, it is, that stupid manifold setup was giving me sealing problems. :bang:

You mean causing an air leak or sealing with the tester?

 

[Modifiedmark]

You mean causing an air leak or sealing with the tester?

No it was leaking and not letting the saw pass a pressure or vac test. Probably what burned the saw up.

That was some time ago, its been up and running well for some time.

 

[PB]

No it was leaking and not letting the saw pass a pressure or vac test. Probably what burned the saw up.

That was some time ago, its been up and running well for some time.

Interesting. I have had really good luck with no intakes leaking.

 

[Modifiedmark]

Interesting. I have had really good luck with no intakes leaking.

Well as you can tell by the picture its been almost 3 years since I did that one, and
I dont remember the details, but I remember having trouble with that issue.

 

[PB]

Well as you can tell by the picture its been almost 3 years since I did that one, and
I dont remember the details, but I remember having trouble with that issue.

I had an intake on a P70 leak and damn if that wasn't a pain to figure out. There was a hair line crack that was giving me grief.

 

[Cantdog]

Well as you can tell by the picture its been almost 3 years since I did that one, and
I dont remember the details, but I remember having trouble with that issue.

AHHHHH that's just cause you're not a true believer Mark!!!!! LOLOLOL!!!!!

 

[Brian VT]

That is even easier.

I just assumed I wouldn't be able to find any fitting with that thread.

I'm afraid I mislead you. I didn't get the important part at the hardware store. Sorry.
My compression tester (old Snap-On) has a bunch of different quick-connect fittings to go in the plug hole.
I use one of those, and a female quick-to-barb from the hardware store, to connect my Mity-Vac to the plug hole.

 

[pioneerguy600]

Solder the barbed fitting directly into the sparkplug base, simple as pie.
Pioneerguy600

 

[Modifiedmark]

AHHHHH that's just cause you're not a true believer Mark!!!!! LOLOLOL!!!!!

I'm a true believer in fixing them!

Now thats a real Jred is it not? :bang:

 

[Cantdog]

I'm a true believer in fixing them!

Now thats a real Jred is it not? :bang:

HAHAHA!!....Yes, that is a true Jonsereds....BTW you forgot the S!! See what I mean?? !LOL!!

If one needs fixin I'm sure you are certainly up to the task. Just givin you a hard time!!LOLOL!!

 

[Modifiedmark]

HAHAHA!!....Yes, that is a true Jonsereds....BTW you forgot the S!! See what I mean?? !LOL!!

If one needs fixin I'm sure you are certainly up to the task. Just givin you a hard time!!LOLOL!!

Well at least I still have that JonseredS

 

[Cantdog]

Well at least I still have that JonseredS

You do? Well good for you. I didn't know you had such a thing in you collection....A true man of class!!!

Good enough....I'll perhaps stop pestering you so much......however this does not change my earlier convictions concerning those "other " saws!!!LOLOL!!!

 

[Modifiedmark]

Well maybe you should know I got a Jonsered 2077 as well!

Mine just happens to be a yellow one.