VTECH 45 - Compression Testing Of Victa 2-Stroke Engine
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- čas přidán 24. 07. 2024
- How to test the compression of a Victa 2-Stroke engine? This is the most common question that most of us would like to know and how to test the compression properly with the decompression valve. In this video we will demonstrate how to test the compression properly. Some does placed a spoonful of oil inside the combustion chamber to check for increased compression to check for leak through the piston rings but it's not covered in this video. You may refer to ODK forum.
- Jak na to + styl
Love your work, scientific method and no BS
Maybe this is what happens when an Electronic Engineer becomes a Small Engine Mechanics. Thanks for watching our Videos. Cheers, VARIETECH
Excellent tests.
Great Customer Service mate.
From Thomas.
Before I forgot, I would like to say thanks for your comment and watching our video. Better late than nothing. Cheers, VARIETECH
Very helpful Customer information and ( info ).
This is been 5 months now and before I forget, thanks for your comments. Please keep notified and watch our future videos. Cheers, VARIETECH
Hi would you sell an New Victa 2 stroke ignition coil?
Hi Matt, Thanks for watching our videos. Now only we provide tutorials and guide, we tried to supply parts as well especially for victa PT carburetor. What the carburetor can do to keep your PT running for another years if other important parts are no longer available especially ignition coil, piston & rings and decompressor valves. These are the parts that we are trying to source or remanufacture if possible or feasible. As far as I knew, the current available ignition coil without iron core would cause engine kickback due to inductance which cause to advance the ignition firing. I will do more research on this one using oscilloscope to see the timing, comparing inductance and effect of the ignition module and share it to everyone. At the moment we don't have available ignition coil and we don't want to source same coil available on the market which cause engine kickback. Cheers, VARIETECH
what brand of compression tester do you recommend I think mine reads low for some reason
Thanks for watching our video. Go to Supercheap website and search for "12556". Cheers, VARIETECH
So on a healthy Victa ,compression reads approx 80-100psi without decompressor , 85 psi without vacuum pipe , 60 psi with vacuum pipe .
Thanks for watching our video. You're correct and great observation and summary of the overall conclusion. I should do that showing the summary as a quick reference. Cheers, VARIETECH
Just compression testing my Victa 110psi with decompression taking out spark plug in hole
Using Motul 2-stroke oil must be working well
That's good to be true at 110psi. I can't confirm, as most Victa I worked on, the maximum compression I got is only 80psi. Maybe someone can confirm. Thanks for watching. Please do subscribe to see more video on Victa 2-Stroke. VARIETECH
I got a higher reading of 80psi with the decompression valve on. With the valve hole plugged up, it was 65 psi. Any thoughts on why this is the case?
If you got a reading of 80psi with decompression valve, you should also get a reading of 80psi when it's blocked. Pulling the starter cord when plug is blocked is very hard and you feel the kickback even the engine is in Off position. Building up to the full compression needs force and quick pull with no hesitation. I understand not everyone or age has the same pulling force. I'm one that already on the margin which I still enough force to do it. Maybe in a few years from now, this will be only a history to tell. I hope it help. Cheers and thanks for watching our videos and following our channel for your small engine repair. VARIETECH
@@Varietech-AU Thanks for your help. I'm thinking the reading of 80psi is because the cylinder is too dry from it sitting a long time so there's next to no oil seal on the rings. I know there's cheating with a squirt of oil. I might run it, let it cool down and try again. I normally do Briggs/Hondas and just aquired 4 Victa 2 Strokes of various generations.I like keep a clear conscience when I sell used power gardening equipment.
How often do the compression valves typically last?
Thanks for watching our videos. If you mean the decompression valve, imagine that some of the unit was built in 1980 and still had the original decompression valve which now fails. That's possibly be the reason why decompression valves cost roughly $40AUD but this must be replaced for easy starting. Thanks, VARIETECH