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Feels like my tractor is only at half the power

1136 Views 13 Replies 8 Participants Last post by  markusedma
I just changed out my cylinder head and rods. I cut grass for about 1 hr and now it seems like I'm only getting half the power. I took off valve covers on both sides and all looks ok. 1 spark plug was dry and jet black with soot the other was damp and gray looking. I have a Briggs & Stratton 24 hp els725 ohm engine. Muffler sounds a little muffled too. Engine sounds weak not like when running good. Any ideas.
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By rods do you mean push rods? If so maybe one one the cylinder with the wet/damp plug has a problem with the push rods.

Why did you change out the heads ?
Check to see if the rocker arm stud(s) have come loose.
Check to see if the rocker arm stud(s) have come loose.
... because when the studs start to back out the rods can get bent. Putting in new rods without tightening the studs will not fix the problem at least not for long.

If the studs are loose you need to take them out and use the red thread locker.
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