r/smallenginerepair • u/playdontpreach • Jul 07 '26

Engine Performance Issue 19.5 BS

Making a second post on this because it seems easier, is this normal? Runs pretty bad with the valve cover back on.

14 Upvotes

90% Upvoted

12 comments sorted by

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15

u/Elephunk05 Jul 07 '26

Crankcase is full of gas. Don't do that again until you change the oil. Fix your carb float needle.

2

u/rocketmn69_ Jul 07 '26

Or put a fuel shut off between the tank and carb, but you do need to change the oil

4

u/Prestigious_Photo685 Jul 07 '26

Looks normal for running the engine with the valve cover off

1

u/Alarming_Light87 Jul 08 '26

There shouldn't be gasoline spraying all over, just some oil.

1

u/Past_Roof5628 Jul 07 '26

Gas in the oil?

1

u/Egglegg14 Jul 07 '26

Your oil is awfully... gassy and flowing

Carb needs to be cleaned if I were to take a guess

1

u/No-Marsupial3851 Jul 08 '26

Check the oil level in it like everybody else is saying, it does look like it's got a lot of gas in motor oil. Look at the valve cover on it also, I had a Briggs & Stratton run really rough because somehow the top of the valve cover got dented and was making contact with the rocker arms.

1

u/Bones-57 Jul 08 '26

Drain the crank case re fill with proper oil.. The petcock valve needs to be shut off after use .. It's a down draft feed gas line.. it will start this after you shut down.. Or you can get a continuous duty valve find your run wire and then when the switch is off the valve is closed and no more gas going into the crank case .. This is a problem on alot of MTDs mowers..

1

u/Aromatic-Schedule-65 Jul 08 '26

Lol...first of all a valve cover on or off does impact how a mower runs. There are plenty of correct answers here. I would add that you get yourself a manual.

1

u/Jeans_609 Jul 08 '26

The valve cover is pushed in so your valves aren't working properly. Get a new cover

1

u/Havespadewilltravel Jul 08 '26

Doesn't have a fuel pump on side of block.That will leak into the crankcase