Yes it is a nightmare.
I couldn't get my boys xr70 started, so I went through all the usual, cleaned the carb, air filter, checked for a spark. Still wouldn't start, checked the compression, it was very low so I stripped down the top end and took it to my local Honda dealer to check out. They rebuilt the head, honed the bore and suggested new rings, which I bought.
Now, I've never done a 4 stroke top end but I have done 2 strokes ,and I've got a manuel. So with confidence high I started to rebuild the top end.
As far as I can see I did everything the book said, the T on the flywheel matched the mark on the crank case, the O on the cam chain sprocket lined up with it's mark, the valves where adjusted as per the book. And still the bugger won't start, not only that, it doesn't even try, no backfire, nothing.
There is still a spark, gas still gets through, everythig looks clean and tight, but it's still dead.
What to do ?
I would love some input before I take it apart and put it back together again.
Thanks in advance
I couldn't get my boys xr70 started, so I went through all the usual, cleaned the carb, air filter, checked for a spark. Still wouldn't start, checked the compression, it was very low so I stripped down the top end and took it to my local Honda dealer to check out. They rebuilt the head, honed the bore and suggested new rings, which I bought.
Now, I've never done a 4 stroke top end but I have done 2 strokes ,and I've got a manuel. So with confidence high I started to rebuild the top end.
As far as I can see I did everything the book said, the T on the flywheel matched the mark on the crank case, the O on the cam chain sprocket lined up with it's mark, the valves where adjusted as per the book. And still the bugger won't start, not only that, it doesn't even try, no backfire, nothing.
There is still a spark, gas still gets through, everythig looks clean and tight, but it's still dead.
What to do ?
I would love some input before I take it apart and put it back together again.
Thanks in advance