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Tom G.
Member
Username: tomfg
Post Number: 9
Registered: 01-2013
| | Posted on Saturday, February 02, 2013 - 04:07 pm: | 
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Built a fire in the garage, and played around with the Gray U for a couple of hours.
Have a few issue to remedy.
My sediment bulb shut-off does not shut off
the fuel flow.
When I crank the engine over, gas spurts out the overflow hole (out the bottom of the vaporizer).
Perhaps my float isn't floating like it's suppose to be. I didn't mess with the needle valve, but now see according to the diagram, it should be one turn open for starters.
A couple of times, I had it running was about 15 seconds. Usually it just fired 3 or 4 times. Got tired of cranking, lol. Wish I had a "Miro" designed ignition box hooked up. I'm using a Model T coil and six volt battery right now.
Is it normal for fuel to spurt out the carb vent on these engines while your cranking them over?
Thanks, Tom |
miro forest
Senior Member
Username: miro
Post Number: 665
Registered: 11-2001
| | Posted on Saturday, February 02, 2013 - 07:11 pm: |
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You might hear some slurping in the carb if you rocked the flywheel back and forth, you really shouldn't have gas dripping out.
It means that you're going to flooding the engine after the first couple of times it fires.
ONce you've seen the dripping, try shutting off the fuel , that will prevent any further gas from coming in. It will fire, not flood, but will eventually die for lack of fuel.
But at least you'll get more than a couple of seconds of running.
miro |
Richard A. Day Jr.
Senior Member
Username: richardday
Post Number: 1043
Registered: 11-2003
| | Posted on Saturday, February 02, 2013 - 08:53 pm: |
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If the engine is flooded open the priming cock or the ignition test cock and crank it over with a slightly retarded spark and it should soon fire a weak bang and then the next one should be a lot sharper. Close the open petcock or priming cock spin the flywheel and the engine should fire and hopefully pick up speed. Then close the needle valve carefully and you should be able to set it for the best firing. You probably will need to close the throttle as you lean out the mixture. It aint Rocket Science it just seems like it. Good luck |
Tom G.
Member
Username: tomfg
Post Number: 10
Registered: 01-2013
| | Posted on Saturday, February 02, 2013 - 11:27 pm: |
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Will play some more tomorrow. I need to find a different sediment bulb with a shut off valve that holds though, if I'm going to control any flooding that way. Any idea what position the throttle / valve spool should be in when starting? Idle, half-way open?
Thanks, Tom |
Tom G.
Member
Username: tomfg
Post Number: 11
Registered: 01-2013
| | Posted on Sunday, February 03, 2013 - 03:53 pm: |
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Messed around for about 3 hours on the GRAY today, and never even got it to fire once.
I'm losing ground! Am going to the big city tomorrow and will look for a new shut off valve for the gas tank, but am guessing my problem is with my Model T buzz coil. It's an old one I got at a flea market. I cleaned up the contacts on it, but did not open it up otherwise. It probably needs a new conderser for starters. The spark plug appears to be sparking adequately, but it won't fire. I squirted gas in the compression release valve (which worked yesterday) and it did not even "pop". I then cranked it over with the compression release wide open, and it blew out a nice gasoline mist.
Would have thought I would have had a flame thrower. Have ordered relays to build a Miro version ignition box. But on the bright side, I burned quit a few calories spinning over the GRAY. |
J.B. Castagnos
Senior Member
Username: jb_castagnos
Post Number: 756
Registered: 07-2002
| | Posted on Sunday, February 03, 2013 - 07:45 pm: |
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Sounds like it's flooded, if so it won't even pop. Shut the fuel off and keep cranking with the compression release open, when the mixture is right it should pop or run. If the carb was flooding the crankcase could be loaded with fuel, a drain on the case helps here. Be sure your plug is good, a sooty plug will short when wet, try a new one. |
Tom G.
Member
Username: tomfg
Post Number: 12
Registered: 01-2013
| | Posted on Sunday, February 03, 2013 - 09:21 pm: |
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JB, My fuel shut off is not holding, so I'll look for a new one tomorrow. I opened the crankcase petcock, and only got one drip out.
The carb needle and seat seems to be holding, or else I think gas would run out the overflow. Tried a brand new plug, it made no difference. I have a "non" Model T buzz coil wired up to my GRAY stationary, 4 cycle that runs it well. I'll probably try that next time I get a chance to spend quality time in the garage. Thanks for the advice. |
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