oneclick
10-14-2008, 05:41 PM
I tore apart the engine and replaced the timing chain on my z50 engine (for my atc70), i bought a complete gasket kit, new points and condenser, etc... got it all put back together, and it still won't start...
after bolting the engine up to the trike i let it sit overnight, the next day i came out to put the carb, exhaust, and wire it up... i noticed a tiny puddle of oil under the trike, i took a look and i found it was coming from the exhaust port, what would cause this? and how to fix? it doesn't leak alot, maybe 1 drop every 2-3 hours.
here is a list of things i done to it...
removed engine and set it up on my workbench.
removed the whole top-end.
removed the stator plate itself.
removed old timing/cam chain.
released pressure on the cam chain adjuster.
put on the new cam chain.
scraped all the old gaskets off the top-end parts.
put new gaskets between trans case and cylinder.
slid the cylinder on and inserted the piston.
inserted the cam guide roller and bolt.
then new gaskets between cylinder and head.
slid on the head itself.
tightened the head bolts/acorn nuts.
bolted cam chain to cam (making sure 0 lined up, and the T lined up).
put new gaskets on the head cover, cam cover, head bearing cover and valve cover seals.
then with the stator - i removed the old points and condenser.
installed the new points/condenser onto the stator.
then reinstalled the stator plate itself with a new gasket.
then put the flywheel on and set the points with a feeler guage (set to .012).
after setting with the feeler guage i also hooked up a light and battery and the light dims right on the F like it should.
engine completed.
i didn't touch anything inside the head itself, it didn't leak oil in the exhaust before,
and it still won't start! it's getting really frustrating. :( i can get it to backfire though... i stopped messing with the trike for a few days and then last night i tried starting it again, still just a backfire every now and then, i also checked and adjusted the valves last night but nothing.
it's a 1981 z50 engine, using the stock 70 carb, the carb has been cleaned inside and out and totally rebuilt (new gaskets, jets, needle, slide, float needle, etc...).
it's getting plenty of gas, air and has really good spark (bright blue). i'm stumped!
Any suggestions?
Jason
after bolting the engine up to the trike i let it sit overnight, the next day i came out to put the carb, exhaust, and wire it up... i noticed a tiny puddle of oil under the trike, i took a look and i found it was coming from the exhaust port, what would cause this? and how to fix? it doesn't leak alot, maybe 1 drop every 2-3 hours.
here is a list of things i done to it...
removed engine and set it up on my workbench.
removed the whole top-end.
removed the stator plate itself.
removed old timing/cam chain.
released pressure on the cam chain adjuster.
put on the new cam chain.
scraped all the old gaskets off the top-end parts.
put new gaskets between trans case and cylinder.
slid the cylinder on and inserted the piston.
inserted the cam guide roller and bolt.
then new gaskets between cylinder and head.
slid on the head itself.
tightened the head bolts/acorn nuts.
bolted cam chain to cam (making sure 0 lined up, and the T lined up).
put new gaskets on the head cover, cam cover, head bearing cover and valve cover seals.
then with the stator - i removed the old points and condenser.
installed the new points/condenser onto the stator.
then reinstalled the stator plate itself with a new gasket.
then put the flywheel on and set the points with a feeler guage (set to .012).
after setting with the feeler guage i also hooked up a light and battery and the light dims right on the F like it should.
engine completed.
i didn't touch anything inside the head itself, it didn't leak oil in the exhaust before,
and it still won't start! it's getting really frustrating. :( i can get it to backfire though... i stopped messing with the trike for a few days and then last night i tried starting it again, still just a backfire every now and then, i also checked and adjusted the valves last night but nothing.
it's a 1981 z50 engine, using the stock 70 carb, the carb has been cleaned inside and out and totally rebuilt (new gaskets, jets, needle, slide, float needle, etc...).
it's getting plenty of gas, air and has really good spark (bright blue). i'm stumped!
Any suggestions?
Jason