Dave Bernard
Active Member
What I had hoped would be a milestone day yesterday ended in disappointment...
I've got a new o-360, Dynon Skyview on my rv8.
We did the pre-oil procedure, put the plugs back in and out some gas in and prepared to start- the first interesting thing was the fuel pressure. Fuel pump came on and you could hear the fuel being pumped into the carb, but once it was full the pressure indication shot up to 17 psi or so. This seemed super high so I chalked it up to an indication problem, and shut off the pump. I have the facet pump from Vans which should only put out 6psi. The fitting from the engine fuel pump has the restrictor fitting installed.
We cranked multiple times, normal start, hot/flooded start, fuel pump on, fuel pump off, no dice. Not even a sniffle came from the engine, no indication of firing at all.
We drained the carb to see if it was contaminated with the preservation oil still, no dice, just fuel.
Pull the plugs, the bottom plugs were super oily which I suppose is normal for this new engine. Top plugs were wet but not oily. Cleaned and reinstalled. Not convinced the cylinders are getting fuel.
I didn't check the mag timing- the engine ran at the factory for a few hours before it was shipped, so I can't imagine the timing is wrong. My mag wiring goes from the Acs switch with pickoffs installed for Dynon tach indication to the mags with a shield ground pigtail there. I pulled the pickoffs to see if that was interfering, no luck.
The Dynon also showed 0 RPM during the start cycle, is that normal- do the RPMs not show until the engine is running?
Thoughts?
I've got a new o-360, Dynon Skyview on my rv8.
We did the pre-oil procedure, put the plugs back in and out some gas in and prepared to start- the first interesting thing was the fuel pressure. Fuel pump came on and you could hear the fuel being pumped into the carb, but once it was full the pressure indication shot up to 17 psi or so. This seemed super high so I chalked it up to an indication problem, and shut off the pump. I have the facet pump from Vans which should only put out 6psi. The fitting from the engine fuel pump has the restrictor fitting installed.
We cranked multiple times, normal start, hot/flooded start, fuel pump on, fuel pump off, no dice. Not even a sniffle came from the engine, no indication of firing at all.
We drained the carb to see if it was contaminated with the preservation oil still, no dice, just fuel.
Pull the plugs, the bottom plugs were super oily which I suppose is normal for this new engine. Top plugs were wet but not oily. Cleaned and reinstalled. Not convinced the cylinders are getting fuel.
I didn't check the mag timing- the engine ran at the factory for a few hours before it was shipped, so I can't imagine the timing is wrong. My mag wiring goes from the Acs switch with pickoffs installed for Dynon tach indication to the mags with a shield ground pigtail there. I pulled the pickoffs to see if that was interfering, no luck.
The Dynon also showed 0 RPM during the start cycle, is that normal- do the RPMs not show until the engine is running?
Thoughts?