Average compression psi on lawn mower engine
#1
12-05-15, 03:33 PM
Average compression psi on lawn mower engine
Is there a general compression test value on a 15 year old lawn mower engine showing the compression is ok?
#3
12-05-15, 04:53 PM
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1. Does it smoke ?
2. OHV or flat head ?
3. Model and type first 4 #'s of the code would help ~!~!
2. OHV or flat head ?
3. Model and type first 4 #'s of the code would help ~!~!
#4
12-06-15, 05:04 AM
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If you are having trouble with the engine I much prefer a leakdown test. A compression test will just provide a compression number. A leakdown test will also show good or bad compression and allow you to determine where a problem lies; blown head gasket, leaking intake or exhaust valve, worn piston or rings or cracked head...
#5
12-06-15, 08:06 AM
12v802 bs flat head engine
This engine starts pretty well but consumes a good amount of oil. I can't see smoke except at start up (smallish amount) I believe I measured about 65 on the compression test.I'm considering rebuilding it because it is easier to push with bearing wheels and has been dependable.I'll check into a leak down test.
#6
12-06-15, 12:38 PM
I think B&S used to say if you pulled on the starter rope without your foot on the mower and it started to lift the mower the compression was good. Have a good one. Geo
#7
12-06-15, 05:11 PM
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I have a Troybuilt with bearing wheels and a 6.5 hp Briggs on it. Very easy to push and very quiet.
Look under your the deck and see if the seal is good. That won't be a compression issue but you might see where your oil is going.
Try to use another comp gauge to see if the two match.
Look under your the deck and see if the seal is good. That won't be a compression issue but you might see where your oil is going.
Try to use another comp gauge to see if the two match.
