Willy Eckerslyke
Well-Known Member
I have a feeling I've done something wrong...
My 2000TC burnt an exhaust valve last week so I took the head off, had the seat (which was savable) and a spare valve recut and refitted them this weekend. All straightforward enough.
As I'd been meaning to switch to HIF6 carbs for a while, I decided to do so while the originals were off so fitted a pair I've had knocking around along with the associated linkages. These carbs looked fairly clean and apart from rather stiff chokes seemed healthy enough to try without rebuilding.
But once it was all back together the car really didn't want to run. Initially sluggish to turn over, it felt as if I'd mucked up the valve timing. It did eventually burst into life but misfiring and backfiring dreadfully.
So I stopped for tea and convinced myself that I'd lost the cam's position. I've just double checked - flywheel on EP, locking pin in place, exhaust valve on cylinder No1 (nearest the front of the car) fully open. At this point, the slot for the camshaft locking pin is about a degree out - not enough to cause such a problem surely?
So could this be entirely down to the new carbs? Obviously I can find out by switching back to the old ones, but is there something else I could have missed?
Any advice appreciated, please!
My 2000TC burnt an exhaust valve last week so I took the head off, had the seat (which was savable) and a spare valve recut and refitted them this weekend. All straightforward enough.
As I'd been meaning to switch to HIF6 carbs for a while, I decided to do so while the originals were off so fitted a pair I've had knocking around along with the associated linkages. These carbs looked fairly clean and apart from rather stiff chokes seemed healthy enough to try without rebuilding.
But once it was all back together the car really didn't want to run. Initially sluggish to turn over, it felt as if I'd mucked up the valve timing. It did eventually burst into life but misfiring and backfiring dreadfully.
So I stopped for tea and convinced myself that I'd lost the cam's position. I've just double checked - flywheel on EP, locking pin in place, exhaust valve on cylinder No1 (nearest the front of the car) fully open. At this point, the slot for the camshaft locking pin is about a degree out - not enough to cause such a problem surely?
So could this be entirely down to the new carbs? Obviously I can find out by switching back to the old ones, but is there something else I could have missed?
Any advice appreciated, please!