I picked up a non-running EU2000i today for fairly cheap. I dumped out the gas, it was gross. Green, brown chunks of crust came with it. I then dumped out the sludge that was in the crankcase. Nasty. Split the plastic shell so I could get to the innards without drama.
Pulled the carb, bowl was full of brown crust and main jet was obstructed. Cleaned the carb internals, pulled the main jet and emulsion tube and cleaned them, blew out the air bleed orifice. Broke the darn tamper-resistant idle mixture needle just like the shop manual said and it's still in there for now.
I rotated the crank while looking into the oil filler, both blades on the oil slinger are there. Good sign. Pulled the gas tank and flushed it out, cleaned the filter which had more green/brown crust caked in it.
Put the carb back together and reinstalled. Pulled the spark plug and it was fouled big-time with oil. Pulled the head cover, all was clean. No groove worn into the plastic camshaft lobe so it's been getting oil up top. I poured MMO into the spark plug hole and spun the crank a few turns, left the piston about BDC and added more MMO to soak in for ~20mins.
I filled the crankcase with Rotella T-5 10W-30 and 2oz of MMO, splashed about a pint of gas plus a shot glass of SeaFoam into the tank, put in a new NGK BPR5ES plug, and crossed my fingers.
It started after 15+ pulls, likely just refilling the carb bowl, and smoked like a bug fogger. Wouldn't idle in Eco Mode without ~3/4 choke...idle metering circuit is still clogged somewhere. Ran it up to temp still smoking, threw the Eco Mode switch to OFF and it really smoked. Blue-black smoke. Eventually the MMO burned off, smoke let up a bit but still visible w/ a flashlight.
I pulled the crankcase vent tube off the air filter housing while running to check for signs of crankcase blowby...no smoke blowing out and no oil in the tube. This seems encouraging in terms of ring seal. Presumption is that the oil is coming from the valvestem seals, they're easy to replace.
I sprayed GM Top Engine Cleaner into the intake until it died, then pulled the spark plug (nasty black already) and sprayed more into the cylinder. Let it soak for 15min per the label, re-started and REALLY smoked. Ran the engine to WOT with a space heater connected at ~1600W draw, still wanted ~1/2 choke to run but smoke was tapering off.
Disco'd the heater, hit it with GM Top End Cleaner again to shutdown, sprayed the cylinder again, and dumped out the T5 + MMO from the crankcase. It was gross, brown, and a few chunks of carbon washed out. Refilled with straight T5 and there it sits for the night. The prior owner must not have changed the oil. Ever.
Next steps: hit the Honda dealer for a new idle mix screw and pair of valvestem seals. Strip the carb and hit it again w/ the rubber-tip blower and compressor this time, clean out the orifices copper wire, pull the rockers and valvesprings to replace the seals, and re-test.
Any suggestions are welcome.
Pulled the carb, bowl was full of brown crust and main jet was obstructed. Cleaned the carb internals, pulled the main jet and emulsion tube and cleaned them, blew out the air bleed orifice. Broke the darn tamper-resistant idle mixture needle just like the shop manual said and it's still in there for now.
I rotated the crank while looking into the oil filler, both blades on the oil slinger are there. Good sign. Pulled the gas tank and flushed it out, cleaned the filter which had more green/brown crust caked in it.
Put the carb back together and reinstalled. Pulled the spark plug and it was fouled big-time with oil. Pulled the head cover, all was clean. No groove worn into the plastic camshaft lobe so it's been getting oil up top. I poured MMO into the spark plug hole and spun the crank a few turns, left the piston about BDC and added more MMO to soak in for ~20mins.
I filled the crankcase with Rotella T-5 10W-30 and 2oz of MMO, splashed about a pint of gas plus a shot glass of SeaFoam into the tank, put in a new NGK BPR5ES plug, and crossed my fingers.
It started after 15+ pulls, likely just refilling the carb bowl, and smoked like a bug fogger. Wouldn't idle in Eco Mode without ~3/4 choke...idle metering circuit is still clogged somewhere. Ran it up to temp still smoking, threw the Eco Mode switch to OFF and it really smoked. Blue-black smoke. Eventually the MMO burned off, smoke let up a bit but still visible w/ a flashlight.
I pulled the crankcase vent tube off the air filter housing while running to check for signs of crankcase blowby...no smoke blowing out and no oil in the tube. This seems encouraging in terms of ring seal. Presumption is that the oil is coming from the valvestem seals, they're easy to replace.
I sprayed GM Top Engine Cleaner into the intake until it died, then pulled the spark plug (nasty black already) and sprayed more into the cylinder. Let it soak for 15min per the label, re-started and REALLY smoked. Ran the engine to WOT with a space heater connected at ~1600W draw, still wanted ~1/2 choke to run but smoke was tapering off.
Disco'd the heater, hit it with GM Top End Cleaner again to shutdown, sprayed the cylinder again, and dumped out the T5 + MMO from the crankcase. It was gross, brown, and a few chunks of carbon washed out. Refilled with straight T5 and there it sits for the night. The prior owner must not have changed the oil. Ever.
Next steps: hit the Honda dealer for a new idle mix screw and pair of valvestem seals. Strip the carb and hit it again w/ the rubber-tip blower and compressor this time, clean out the orifices copper wire, pull the rockers and valvesprings to replace the seals, and re-test.
Any suggestions are welcome.
