Compression tester

[50:1]

I would like to buy a compression tester for chainsaws on ebay. What do a search for? I'll be testing stihl echo & husqvarna. Thanks

 

[DougMN]

I bought an equus test at Fleet Farm.Lots
of adaptors, release valves in the end of the hose and one by the gauge. Made in tiawan not red china. $29.99

 

[stihlavarna]

I have a Equus one too, has the schrader valve and works good, came with the adapter to work on cars.

 

[aldo]

Hi fellas, is the Equus one similar to this. I can't find anything regarding the schrader valve you speak of. What does the valve do?

Item
http://cgi.ebay.com.au/Compression-...ment?hash=item3c929483cc&_trksid=p3286.c0.m14

Thanks

 

[Streblerm]

You need one that has a schrader valve right where the hose screws into the spark plug hole (at the end of the hose).

On small displacement engines, if you don't have the valve at the end of the hose, the volume of the hose will add to the combustion chamber volume and give you false low readings. the schrader valve solves this problem.

From the picture in the link you posted, its hard to tell whether that tester will work or not.

 

[nmurph]

I would like to buy a compression tester for chainsaws on ebay. What do a search for? I'll be testing stihl echo & husqvarna. Thanks

go to Autozone and buy a Actron for about $30. several of us have them and are satisfied with their quality.

 

[TraditionalTool]

I use a Lisle, had it for years. I've seen pics on AS of others using a Lisle also, they seem kinda popular.

(linky pic to Amazon)

 

[turtle561]

the lisle is a good one.
take off the extension tip for saws,its hard to get a seal without engaging the o ring and you can thread it through into the cylinder and risk hitting the piston. also they take a schrader valve with a light spring,one from an auto ac valve (white seat) works great, not one from a tire(black).

 

[TraditionalTool]

the lisle is a good one.
take off the extension tip for saws,its hard to get a seal without engaging the o ring and you can thread it through into the cylinder and risk hitting the piston. also they take a schrader valve with a light spring,one from an auto ac valve (white seat) works great, not one from a tire(black).

Bingo! Yes, I do unscrew the end to use on the chainsaw.

 

[DougMN]

Go to ebay enter equus 3614. It's $36.99 free ship.good price.

 

[Philbert]

Bailey's (site sponsor) also has one for $29.95 + s/h (Item # G 320HD).

Description says that it has the check valve in the end of the hose, per comments on this site.

http://www.baileysonline.com/itemdetail.asp?item=G+320HD&catID=274

Philbert

 

[Ol' Brian]

Mine is a K-D Tools, got it from NAPA for probably $25 bucks... maybe $30... I've had it too long to remember anymore. The main thing to note is that there is nothing special about these compression testers... they're plain, off-the-shelf units. Nothing special required for chainsaw use.

 

[drgnarr]

Where can you buy just the schrader valve?

Hi fellas, is the Equus one similar to this. I can't find anything regarding the schrader valve you speak of. What does the valve do?

Item
http://cgi.ebay.com.au/Compression-...ment?hash=item3c929483cc&_trksid=p3286.c0.m14

Thanks

Thanks for the help

 

[Philbert]

I asked Lisle about my compression tester (model 20250) and they said that they have a specific replacement valve. Did not mention the price. Don't know if it works with other brands.

(part number) 20100 is the valve core to be used with/on the 20250. A standard valve stem core cannot be used as anything else used aside from the 20100 will cause an inaccurate reading.

I asked at a local auto parts store and they looked at me like I was a little nuts. So, I would also be interested if there is a generic valve stem available, and a way to describe it to the auto parts guys.

Philbert

 

[turtle561]

i went to my auto parts store and asked for a schrader valve with the weakest spring we could find. he came up with one for an auto ac valve. it seems to work fine in my lisle gauge.
my thinking was the compression had to unseat the valve and given the small inlet area the less resistence(spring) the better. the one i used had a white band /seal on it . i don't know if they are color coded for spring strength but some were blue,red and tire valves were black.

 

[turtle561]

i went to my (NAPA) auto parts store and asked for a schrader valve with the weakest spring we could find. he came up with one for an auto ac valve. it seems to work fine in my lisle gauge.
my thinking was the compression had to unseat the valve and given the small inlet area the less resistence(spring) the better.
at NAPA the part# is TM 209574. they were $1.59 each.

 

[Philbert]

i went to my (NAPA) auto parts store and asked for a schrader valve with the weakest spring we could find. he came up with one for an auto ac valve. it seems to work fine in my lisle gauge.
my thinking was the compression had to unseat the valve and given the small inlet area the less resistence(spring) the better.
at NAPA the part# is TM 209574. they were $1.59 each.

I tried the same thing, and they came up with the same part. It was green instead of white, like other posters have said.

 

[jeepinmatt]

As stated, it is crucial to get the type with a one-way valve right at the connection point. I bought a new to me 3120XP a few days ago, and checked the compression with my trusty old gauge. Came up 90psi. Did the same with my great running 046, and also got around 90psi. Then I did some research on here, went to Autozone and got the Actron compression tester. My old one had the valve up by the gauge, and 12in of old stretchy hose. Retested them with the new guage, the 3120XP was 145psi and the 046 was 155psi. I was expecting an increase, but was pleasantly surprised with the result.