It won't start

[brainbug007]

Originally Posted by will_08

Have you ever gave it a good hand crank? the engine i mean

has it been rebuilt by you or just a donor engine thats been sat for a while?

Ive been told to put cola down bores before, to free up stuck rings!?!?! might be worth a go?

Yup it was cranking fine by hand and electrically up until I put the new plugs in after putting a bit of oil down each plug hole as suggested by someone else earlier in this thread.

It's the donor engine and all I've done to it is put a new head gasket on it, shorten the sump, put bike carbs on it, and I'm trying new plugs at the moment.

Not sure I want to put anything else down just yet as putting the oil down seems to have caused the problem as it was cranking fine before that

If the bottom end turns over once the head is off the next thing to do is see if the cam will turn in the head.

If it does you could try just resetting the timing and refit the head. If you had a valve spring compressor you could take the valves out and check none are bent.

Hopefully like you say it'll be ok with the head off and I'll be able to hand crank them seperately. I don't have a valve compressor, how much is one of these and how difficult is it to take them out? Also will I need to put a new head gasket on doing this or should I be ok re-using the semi-new one now?