Re: Won't start
Posted: Mon May 06, 2013 9:39 pm
All went well putting on barrel and head and that is as far as I got. I got carried away on other bikes a the weather was so good.
http://www.400greybike.com/forum/
Won't start
Page 7 of 27
Re: Won't start
Posted: Mon May 06, 2013 10:09 pm
Sweet
Re: Won't start
Posted: Sun May 12, 2013 9:56 pm
Well a fairly manic weekend of building the bike. Got everything up together just waiting for the exhaust to come back from coating. Good news is I have decent compression across all four cylinders - about a145 psi but I don't trust the new compression gauge any more than the old one. Is there a decent compression gauge on a 10mm thread that tells the right compression and does not cost a kings ransom.
Re: Won't start
Posted: Sun May 26, 2013 5:52 pm
Managed to finish everything I needed to to get the bike to a stage where I could press the start button today, let the fuel pump primp a couple of times and it started straight away.
It's smoking like mad and I wondering if this is just build oil or I have cocked up.
I took it for a run and it was smoking not quiet as badly when I got back nevertheless still pretty bad.
Anyone had similar???
It's smoking like mad and I wondering if this is just build oil or I have cocked up.
I took it for a run and it was smoking not quiet as badly when I got back nevertheless still pretty bad.
Anyone had similar???
Re: Won't start
Posted: Sun May 26, 2013 9:42 pm
Was there any oil in the exhaust from a blow up or anything ?
I rebuilt a gsxr 400 that had gone bang before I got it and it smoked badly when I took it out and got it hot, I took the top end off again could find nothing wrong so refitted it but it still smoked!
Put another engine in and it still smoked.
So I had a bit of a Zen moment when I realized that it was the old oil in the pipe still burning off, I went out and gave it the caining of its life and that "fixed" it.
Worth checking.
I rebuilt a gsxr 400 that had gone bang before I got it and it smoked badly when I took it out and got it hot, I took the top end off again could find nothing wrong so refitted it but it still smoked!
Put another engine in and it still smoked.
So I had a bit of a Zen moment when I realized that it was the old oil in the pipe still burning off, I went out and gave it the caining of its life and that "fixed" it.
Worth checking.
Re: Won't start
Posted: Sun May 26, 2013 11:36 pm
Run it again until warm then shut it off quickly with the kill switch, pull the plugs out and check them.
At least it runs
At least it runs
Re: Won't start
Posted: Tue May 28, 2013 5:57 am
Thanks guys for your replies
The exhaust was dipped and blasted before powder coating. So I don't think there is any oil in the exhaust but I still wonder If there is build oil in the system. I have taken it for a blast and its running Ok but stiil smokes on start up and when you back the throttle off.
I will look at the plugs tonight but I can't face taking the head off again.
The exhaust was dipped and blasted before powder coating. So I don't think there is any oil in the exhaust but I still wonder If there is build oil in the system. I have taken it for a blast and its running Ok but stiil smokes on start up and when you back the throttle off.
I will look at the plugs tonight but I can't face taking the head off again.
Re: Won't start
Posted: Tue May 28, 2013 8:57 am
This to me sounds like rings,Did you rebuild with new or did you refit the old,
Did you hone the cylinder before fitting.
Did you hone the cylinder before fitting.
Re: Won't start
Posted: Tue May 28, 2013 9:33 am
It might clear, but it does sound like an oil ring. If you find one plug oiled up then that's where I'd start.
Re: Won't start
Posted: Tue May 28, 2013 11:42 am
did not hone and rebuilt with old rings.