okay guys i gotta problem with this little PP180 that is defying me. i know i should be able to figure this out but i am now having to resort to "asking for directions" <<gasp>>
- i have taken this saw apart (not disassembled the motor),
- cleaned it up real nice,
- replaced spark plug
- rebuilt the carb, Walbro WT20, by cleaning with carb cleaner (about 3 times), cleaning in the USC (twice), and using lots of compressed air,
- taken it apart for "what-if" inspections 3 - 4 times,
- took it apart again and replaced the welch plugs just in case the passages were blocked,
- bought a walbro "w" gauge so i'm sure about the metering adjustment,
- replaced filter,
- replaced fuel line twice (don't think i like that tygon, too flimsy and too easily kinked),
- adjusted H and L needles to 3/4, 1, 1-1/4, 1-1/2 turns out,
- fueled it up, primed the carb and started.
runs like a scalded dog for about 5 seconds and dies, pull the rope 4 times it starts again and dies after 5 seconds, repeat ad nauseum. i can see the fuel in the line to the carb. i can see the fuel spitting into the throat of the carb. saw has seemingly good compression (don't have a gauge yet but pull effort compares to my 1800 and 2000), p&c both look good through the carb and exhaust holes.
this saw is taking way too much of my time. what am i missing?
any questions, suggestions, or even better, a solution would be greatly appreciated.