Oil is being sucked into the carburator after a few minutes running at high RPM. Could this be the result of a blown head gasket? Are there other seals that might be at fault?
2006-11-13 08:06:02 · 8 answers · asked by L E E S A E 1 in Home & Garden ➔ Maintenance & Repairs
Need the model number, not type...
If its a ohv engine, yes indeed it could be a blown head gasket...
flat head side valve, absolutely not....
Bad rings? you'd have to be missed em for it to even blow a tiny bit in the carb....
Make sure the oil is not over filled...... does it smell like gas? If so, change IT!!!, if it has gas in it, you have either a stuck float in the carb, or a damaged leaky inlet needle or inlet needle seat... (or a bad float)
The breather (yes it does let internal crankcase pressure out) but just the pressure and gases.... should never let oil out,.... and it could be worn out and need replacing...
Also make sure the dipstick is sealing good.... (at the base, and at the top under the cap theres another o-ring)
Now the "high rpm" deal....... you havn't messed with the governor have you? I hope its just set at the stock 3,600 rpm...
2006-11-14 00:11:52 · answer #1 · answered by 572ci. 5 · 0⤊ 0⤋
It will not run with a blown head gasket. On the side of the engine there is a breather with a rubber tube that goes into the carburator. This allows crankcase gases to be drawn into the carburator. If you have too much oil in the crankcase it could be forcing this oil into the carb. Having bad rings would also do it, when it goes into compression it is forcing gases into the crankcase that would force oil into the carb. When the engine is cold the rings will seal better, as soon as it warms it will allow the gases to escape. If you decide to buy new rings, be sure to get the cyclinder bored. I have found that just new rings do not do the trick.
2006-11-13 08:17:42 · answer #2 · answered by Thomas S 6 · 0⤊ 0⤋
Briggs And Stratton 12 Hp Carburetor
2016-11-11 19:06:24 · answer #3 · answered by ? 4 · 0⤊ 0⤋
Thomas seems to be correct. The one thing I don't argree with is his statement " When the engine is cold the rings will seal better." I believe it's the other way around. I may be wrong. I've been know for that a time or two.
2006-11-13 08:35:17 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Sounds like bad piston rings and bad valve seats to me.
The piston rings stop oil from rising into the combustion chamber, and the gas/air mixture from blowing into the crank case.
If the rings are bad, it would suck oil into the cumbustion chamber during the intake stroke.
If the valves aren't seating, it could then push the oil back into the carb.
2006-11-13 08:16:43 · answer #5 · answered by texas_boone 2 · 0⤊ 0⤋
it is being sucked in from the crank case breather, it is a tube that goes into the carb about 3/8 inch,
lubricates the top end,
2006-11-13 08:09:29 · answer #6 · answered by rich2481 7 · 0⤊ 0⤋
rich hit the nail on the head. i'm with him on this one.
2006-11-13 08:23:41 · answer #7 · answered by Jim B 2 · 0⤊ 0⤋
sounds like your are bypassing the governor, bad news...
2006-11-13 08:42:49 · answer #8 · answered by Anonymous · 0⤊ 0⤋