Another puzzling XUD question...

Post by **mat_fenwick** » Tue Dec 09, 2008 10:01 pm

I think last year there was a dry day in May, so I may be lucky...

I had wondered about a burnt out valve, but thought that unlikely as with a valve permanantly open, there would be little compression (only the piston rising faster than the air could escape), and hence little or no combustion in that cylinder. Longest time run for was about 15-20 minutes, never under full load. Do you think I am being overly optimistic? I will try the leakdown if I can't find an air leak.

Post by **docchevron** » Wed Dec 10, 2008 12:59 am

If you're going soft after only a few seconds after you've gone hard then it really does point towards an air leak.

Mine will stay hard for, oh, ages, never timed it, but I always have a cigarette afterwards!

kole24 · Post by **kole24** » Wed Dec 10, 2008 7:46 am

BX Bandit wrote: Or a duff/lazy glow plug! Mine are on the way out but if I preheat twice it generally fires up without coughing!

Nope, all new glow plugs. I have installed switch, so I can keep them on after start up, and this helps, A LOT

DavidRutherford · Post by **DavidRutherford** » Wed Dec 10, 2008 8:36 am

kole24 wrote:
BX Bandit wrote: Or a duff/lazy glow plug! Mine are on the way out but if I preheat twice it generally fires up without coughing!
Nope, all new glow plugs.

Just because they are new doesn't mean they are working....

kole24 · Post by **kole24** » Wed Dec 10, 2008 11:33 am

I am aware of that, so checking them from time to time. They are OK