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15-10-2016 uly hunting down problems 2nd time
30-10-2016 - 15-10-2016 Buell XB12X ulysses hunting down problems 2nd time.
uly with a hunting problem low trottle
she is adgeing very well..
trying to hunt down the surging... after inspecting some log files... the O2 signal moves hard while cruising... and the intake airtemp douse also move to much at the same moment... at first we try the sensor and inspect the wires ,
those ulys come with a handy tool tray ;-)
sensor changed and cleaning the ground wires, just to be sure .... and out to try again
uly with the broken trottle shaft, mounting it to make here run
bugger... one off the intake screws took out the threads... for now i mount a longer bolt , as there is some room for it , and repairing would mean the head needs to come off
i think i put the front wheel bearings also on the todo list... ;-) as the corrosion marks are looking promising
throttle bodie fitted
pcv valve... we have some new ones for this, but they test ok... so on with the investication on the oil leak / pressure in the crank case
first i check the rocker box as clearly the silicone is not there for decorative purpose
the 4 bolts out
bugger... gasket has been playing tricks
new gasket in
to ensure it will seat correctly, i put some small dabs off silicone to help the gasket stay flat and in postion during mounting
cover back on
new breather valve on
as the front was leaking... better check the front one as well
douse also look questionable , i put a new one in here as well
testing the pcv valves... you should be able to blow in theme, while suction will close the valve
back on and time to put the engine up
front bolt back in —
running... bought breathers blow allot.. and hot air ... mnnn
oil level is ok ( a bit low ) but is not blocking the breather line
plugs out
mnnn black as the night for the rear one
front one than ?
looks better...
ok now what... testing compression... remove the fuel pump connector
and the coil connector
and with the compression tester in , open the throttle and let the startermotor turn over the engine
a few strokes... with in reson good
rear one about the same
ok leak testing.. gear box in 5e gear. and bump the engine to TDC
tdc turning to compression stroke, the air will blow out hard ( i use to have a wisle ;-) ) but you can also visualy see the pistion moving
or use a rod to determen tdc
now block the rear wheel , one way is to hold the rear brake down , as even a small rotation off the crank ( perfect tdc is hard to set ) will move the engine down when you aply air pressure in the cylinder
leak tester not to high... she is leaking some
if the valves are leaking you will hear this in the intake or in the exhaust... pulling out the crank timing inspection plug... will mean pistons / rings , i could here it leaking here hard... bugger
so having a closer look... heads off, remove the exhaust
clutch cable with bracket loose
top end loose again
also on the list... new plug wires as the old ones are corroded
engine down again
rocker box off... start with the small bolts
than the 4 big ones... evenly
pushrods out ( you need to rotate the engine down to give theme clearance to the frame
intake off again
and coil and top mount bracket loose
looks like the frame holes are made for this ;-)
and head bolts loose
off course the headers needs to come off
she in oiling the pushrod covers good
cylinder off some score marks.. nothing really serieus, not perfect
hone marks still very good visible
looking at the piston rings... hardly worn in
or not at all ... could explain the blowby
ok have a looksy in the rear one —
little harder to get to , but easy enough
you will need some extentions
this one looks a little oil on the top side... wil check the valves / guides as well
pesky rockercovers screws
i want these off first to protect the tapped bores from debris
strange markings on the rear cylinder and i have a feeling this was has not seated right , looking at the brown glow ( oil )
really strange have not sean this before
and the rings ( 2e compression ) is hardly worn in , slots are to close ? pulled the cylinder straigt off.. did they walk around ? mnnn
very light marks on the skirt
but you can clearly see the rings have not even worn in... again could explain the blow by... pampered to much the first km done ?
i want to check some other things, case rotated up and w-brace connected, with a strap on the tierod to the w-brace to hold the case up
and timing cover out
breather oil line loose and removed
and loose the gearcover bolts
ok gasket is good
oilpump gear is healty condition
and reed valve is there and not broken... so far for now