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14-1-2017 A smoking Buell X1

31-1-2017 - 14-1-2017 What did we do Today: Helping A customer with a Smoking Buell X1 And fuel adjustment for a custom build

X1 sleeping over for winter, but is drinking a little to much oil... 1 liter @ 600 km and she is smoking like a diesel truck

plug checking first

a little to black for my taste

front one is wet from oil...

so what is wrong ? we know 3 year ago this engine was overhauled by a HD shop.. removing the coil connector to do a compression test

rear one is good

front one a little less but nothing to worry about

one step further... cylinder leak test, i take off the intake so i can hear the air leaking better

notice the leaking down the base gasket ? but for now i remove the crank timing plug so i can hear the leak down by the piston rings

top dead center compresion stroke... and tester hose screwed in

locking the engine in gear, and putting the rear brake on , slowly turning up the pressure

mnnn.. 2 psi loss @ 50 PSI, cold engine , not bad.. leaking by the rings as i can hear the air escape by the timing hole

base gasket is weaping

front cylinder is about the same loss, further inspection is needed... front head is first off

so exhaust needs to come off... ratteling things wear very hard

header off

front port wet from oil.. and i cannot see the valve guide ?

rear looks ok... valve guide sticking though the head a little

ok striping down... fuel tank off

1 missing screw

first make some space to remove the front head , breather pipe counter nuts loose

and pipes loose to remove the breather pipes

X1 with a carb... yep... ;-)

remove the coil to have a little space

and removing the rocker cover

loosening the rocker box

as the bike is in TDC front... no spring pressure on the rockers

pushrods out

and removing the intake manifold

now supporting the engine as we need to loosen the front mount

front engine mount bolts , some one put is a low grade one ( grade 8 ) that is a little low for these the F11 specification is more... will put a strong one back in

and loosening the head

a little greasy

the bore has some markings but that is not the problem

the intake also looks oily

taking out the valves , the keys can jump out if there sticking

valve stem is also to wet from oil

the guide is flush in the head and looks like there is a piece chipped off ?

valve has also to much play

intake valve... the valve seal was not on the sem anymore, douse not help , has also a little to much play.. i will send the head out to the machine shop , to check the press fitting on the guides... to have indication if it would be smart to check the rear head to !! really shitty when the rear drops a guide in 6000 km

for now the rear looks good

engine held upp with a strap... untill we have spoken with the customer

x1 ?

very long X1... home build project... needed some custom fuel mapping for the licence inspection, as the kept the original Fi from the X1 who better to go to ;-)