Got a new to me used Snapper CP215518HV Commercial. Has a Honda GXV160 on it at 5.5hp.
Engine serial number GJAJA-1009562
Type A1AS
Here goes the story.
Engine had 149psi of compression and held for 10 min easy. Removed valve cover. Rockers were ultra sloppy. Got them set to 0.006" and 0.008" exhaust. Now it has 110psi and holds there. Engine smokes. Owner said it was way over filled with oil. And he removed oil to the full mark. Now engine didn't smoke. I picked it up in the dark, bad move on my part.
Anyway at home, oil was exactly on the full mark. Fired it up next day. She's a smoker. Changed oil and put it back exactly on full on flat ground. Noticed fresh oil was dripping on the deck under carb. I was like what?? Leaking from the air filter/carb 90 degree elbow onto the deck. Removed the block vent hose that runs to carb. Blew oil out of the dipstick with stick open. The vent hose is open but has restriction/baffling. Guess to slow down oil from escaping. Anyway engine running and vent hose off carb, you see oil vapor pushing out the hose constantly. Say 30 seconds later you see oil drips heading to the carb slash cylinder.
Also the revs were sky high when I got it. Kicking around 4500rpm LOL. Someone put a new OEM carb on it. Jets were shiny brass yellow, float was clean white plastic. Zero residue in bowl. I was stunned. Owner said it had a new carb. Was thinking Chinese in my head.... Fixed the throttle cable for proper revs, tach verified.
At 110psi on compression, I thought the rings were good. Guess the oil ring is not working. Getting blow-by into the cylinder from vent line. Was shocked to see basically 150psi. So is my diag correct? She needs new rings and maybe a piston? Definitely an oil control issue.
slomo
Engine serial number GJAJA-1009562
Type A1AS
Here goes the story.
Engine had 149psi of compression and held for 10 min easy. Removed valve cover. Rockers were ultra sloppy. Got them set to 0.006" and 0.008" exhaust. Now it has 110psi and holds there. Engine smokes. Owner said it was way over filled with oil. And he removed oil to the full mark. Now engine didn't smoke. I picked it up in the dark, bad move on my part.
Anyway at home, oil was exactly on the full mark. Fired it up next day. She's a smoker. Changed oil and put it back exactly on full on flat ground. Noticed fresh oil was dripping on the deck under carb. I was like what?? Leaking from the air filter/carb 90 degree elbow onto the deck. Removed the block vent hose that runs to carb. Blew oil out of the dipstick with stick open. The vent hose is open but has restriction/baffling. Guess to slow down oil from escaping. Anyway engine running and vent hose off carb, you see oil vapor pushing out the hose constantly. Say 30 seconds later you see oil drips heading to the carb slash cylinder.
Also the revs were sky high when I got it. Kicking around 4500rpm LOL. Someone put a new OEM carb on it. Jets were shiny brass yellow, float was clean white plastic. Zero residue in bowl. I was stunned. Owner said it had a new carb. Was thinking Chinese in my head.... Fixed the throttle cable for proper revs, tach verified.
At 110psi on compression, I thought the rings were good. Guess the oil ring is not working. Getting blow-by into the cylinder from vent line. Was shocked to see basically 150psi. So is my diag correct? She needs new rings and maybe a piston? Definitely an oil control issue.
slomo
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