154se Flood City

I tore my 154 down and put in new seals, rebuilt the carb, and replaced a number of other things.

Put it back together and I get a "pop" on the first pull then the saw floods. So I took the carb off my good running 254 and the same thing happened. So then I swapped the coil and plug with the good working one from the 254 and still only getting a "pop" then flood city. I guess it is possible this thing is so flooded that it may take longer than a couple hours to dry up in the crankcase.

I'm pretty sure I got the flywheel and key mated correctly and when rotating the crank, the magnet on the flywheel passes the coil at top dead center. Still wondering if it is a timing issue?

The saw holds about 170 psi on my compression gauge.

Any thoughts are appreciated, pulling my hair out on this one.

 

Check the throttle and choke linkage?

 

I've got the air filter off and can visually see the choke opening and closing and the throttle engaging correctly.

I get a pop that sounds like a misfire, then it floods on subsequent pulls.

Compression is 165-170.

Where's your vid on manually clearing the crankcase?

Thanks guys

 

Take the flywheel off and check key and keyway. Just a little challenged will mess things up.

 

Are you sure the crank seals are sealing good had this problem with a little snowmobile this winter everthing checked good and would try then just drown out. Those seals were shot but it ran all day then the next day nothing new seals and it fired on the second pull.

 

I installed new seals......wish I wouldn't have traded off my mighty vac. I know, I know, need to pressure/vac test after this type of rebuild, but thought I could get away without doing it. If the seals weren't properly sealing, the saw wouldn't hold compression I don't think.

Rookie, I'll pull the flywheel again.

 

I don't believe the seals have any effect on compression.

 

Wealth of knowledge here.
Love it.

 

The snowmobile had great compression. The crank seals fell out when I split it

 

I installed the new seals according to the shop manual and how I have done it in the past...... guess I need to find a press/vac tester

 

I took the ignition, plug and entire carb/intake system off the 254 you ran at the GTG.

My last hope for a simple fix is it was so darn flooded that it needed to sit overnight

 

May not been anything you did could be faulty parts been down that road. Take a few steps back recite the kiss printable and recheck stuff. I feel your pain.

 

I suspect a carb problem rather than an air leak. Did you check the metering lever height when you rebuilt it? Is the choke linkage out of whack?

 

Broken flywheel key. Must not have gotten the flywheel back on correctly?