TCSTEVE
Well-known member
Just went to start the Corty up today as its been sitting for 6 months.
Besides the battery being flat ive hit a few hurdles.
Its running rough as guts and not making power
So far ive changed the plugs as the old ones were black due to the holley being real rich and with only six months of driving it daily you couldnt see the elctrode.
The jets are 68's which im guessing must be too big?
New set of leads and changed the fuel over with some nice fresh premium.
Still no good.
Static timed it after removing and checking the dizzy and its gear, got it right the second time as i must of got the exhaust stroke not the power one.
Started it again and it will only run with a lot of throttle and splatters terriblly.
Ive checked the pushrods and valve springs, retainers etc and everything seems fine.
While holding the throttle on to keep it running ive twisted the dizzy and it hasnt made to much difference, seemed that retarding it made it a little better at higher rpm. It was splattering through the carby and backfiring too.
Ive checked the order of the leads because it seems to be a timing/ignition issue.
Then the holley which doesnt have a throttle cable connected to it started pouring fuel down its own throat after shutting the engine off and the throttle was definatly seated and not open at all.
It was pouring fuel as if it was a drizzle from a garden hose after shutting it off.
Ive never had so many problems in one day and ive never seen a carby do that before. It was odd. So now im thinking ive burnt out some valves or something stupid and obvious.
Any help would be appriciated as its doing my head in.
Cheers Steve
I forgot to add that i havent done a compression test yet but the motor is only 2,000km old and turns over by hand, nice and tight with the plugs in and i set the plug gaps to 1.1mm.
Besides the battery being flat ive hit a few hurdles.
Its running rough as guts and not making power
So far ive changed the plugs as the old ones were black due to the holley being real rich and with only six months of driving it daily you couldnt see the elctrode.
The jets are 68's which im guessing must be too big?
New set of leads and changed the fuel over with some nice fresh premium.
Still no good.
Static timed it after removing and checking the dizzy and its gear, got it right the second time as i must of got the exhaust stroke not the power one.
Started it again and it will only run with a lot of throttle and splatters terriblly.
Ive checked the pushrods and valve springs, retainers etc and everything seems fine.
While holding the throttle on to keep it running ive twisted the dizzy and it hasnt made to much difference, seemed that retarding it made it a little better at higher rpm. It was splattering through the carby and backfiring too.
Ive checked the order of the leads because it seems to be a timing/ignition issue.
Then the holley which doesnt have a throttle cable connected to it started pouring fuel down its own throat after shutting the engine off and the throttle was definatly seated and not open at all.
It was pouring fuel as if it was a drizzle from a garden hose after shutting it off.
Ive never had so many problems in one day and ive never seen a carby do that before. It was odd. So now im thinking ive burnt out some valves or something stupid and obvious.
Any help would be appriciated as its doing my head in.
Cheers Steve
I forgot to add that i havent done a compression test yet but the motor is only 2,000km old and turns over by hand, nice and tight with the plugs in and i set the plug gaps to 1.1mm.
