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Antique Gas Engine Discussion Meet collectors of hit and miss engines, ask questions about collecting, restoring and showing antique flywheel engines.

Antique Gas Engine Discussion

1923 Fairbanks Morse Model Z Problems


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  #1  
Old 05-29-2005, 04:14:14 PM
Ratchet88 Ratchet88 is offline
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Angry 1923 Fairbanks Morse Model Z Problems

I Need Some Expert Advise On This Hit N Miss I Have. I'm Having A Heak Of A Time Getting This Old Girl Running Again. I Had It Running 3 Years Ago. Now When I Try To Crank It Over , Some Days It Will Fart And Kick Back And Sometimes Run For 2-3 Pops. Other Days I Can Crank That Engine Over For 20 Minutes Straight And Nothing Happens. It Has Good Spark. It's Getting Gas. I've Tried Choking It To Death. I'm Just Getting Frustrated. I'm New With These Kind Of Engines So Any Advise Would Be Great. Thanks,mike........
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  #2  
Old 05-29-2005, 04:48:18 PM
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Byron Roberts Byron Roberts is offline
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Default Re: 1923 Fairbanks Morse Model Z Problems

Mike:: You might be choking it to death:: If you are dripping out of mixer try shuting fuel off ~~ Crank it till it starts(maybe) ~~turn fuel back on~~OR~~ Hold in on intake valve with fuel shut off~~~Dry it out a little~~ with your buddy pulling on the flywheels makes it a lot easier~~These engines all have there own way of tweakness:: Worth a try..Byron
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Old 05-30-2005, 12:40:48 AM
BobRR BobRR is offline
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Default Re: 1923 Fairbanks Morse Model Z Problems

What size&model Z engine do you have? BobRR
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Old 05-30-2005, 11:52:24 AM
Ratchet88 Ratchet88 is offline
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Default Re: 1923 Fairbanks Morse Model Z Problems

It's A 1 1/2 Horse Pan Wheel Z.
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Old 05-30-2005, 03:28:17 PM
BobRR BobRR is offline
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Default Re: 1923 Fairbanks Morse Model Z Problems

Ok you have a dishpan now is it mag or buzz coil fired?BobRR
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Old 05-30-2005, 08:58:22 PM
Ratchet88 Ratchet88 is offline
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Default Re: 1923 Fairbanks Morse Model Z Problems

I Think It's A Wooden Coil. It Has A 6 Volt Lattern Battery To Help It Along. Thanks For Taking The Time To Try And Help.
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Old 05-31-2005, 12:35:29 AM
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Default Re: 1923 Fairbanks Morse Model Z Problems

How old is the Battery? Does the coil buzz when you roll it up on compression every time ? If it does then try a NEW plug.Battery & coil engines are ussally easy starting.Does it have the stock battery&coil metal box? BobRR
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Old 05-31-2005, 07:33:14 AM
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Default Re: 1923 Fairbanks Morse Model Z Problems

The first thing I would do, is get rid of that lantern battery. I have had nothing but grief with them. Go to a local battery dealer or farm supply store & get a rechargeable 6 volt, motorcycle, garden tractor type battery. I know, I know...some people have good luck with the lantern batteries, but I haven't! I would also try a different buzz-coil, that I knew was good & a new spark plug. Also be sure that the valves are oiled. How old is the gas, you're using? Are you able to belt it to another, larger engine? If so, try that, too. If all else fails, put a "For Sale" sign on it, at your next swap or show & send it down the road!!! GOOD LUCK!!!
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Old 05-31-2005, 11:52:03 AM
Ratchet88 Ratchet88 is offline
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Default Re: 1923 Fairbanks Morse Model Z Problems

The Battery Is Brand New And The Coil Does Buzz Every Time I Crank It. Also, It Does Have The Original Battery Box. Thanks, Mike.....
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Old 05-31-2005, 01:42:47 PM
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Default Re: 1923 Fairbanks Morse Model Z Problems

How did you test the spark? Do you know if it's firing inside the cylinder under compression? May not be. I agree with the bigger and better battery idea. Good Luck
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Old 05-31-2005, 05:56:17 PM
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Default Re: 1923 Fairbanks Morse Model Z Problems

If the battery is good it doesnt matter if its a dry cell or lead acid. I to like the small sealed 6v batterys but I have run dry cells a lot and long as its a good battery I have never had a problem. Mike have you tried a new plug???With these old engines it seems you never have enough sparkplugs around somedays A spark plug could be new and show good spark out of the engine but not fire or fire intermitinaly under compression. Also make sure your plug wire isnt shorting out against box or block.Are you sure its getting gas up to the mixer?Have you tried a shot of gas into the carb?If the old gas varnished up you will probably have to pull the gas line and clean the screen and ck. valve.As Randy mentioned oil the valves a little and make sure the intake moves freely. Be good to that steel box they are hard to come by! Let us know.BobRR
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Old 06-01-2005, 12:05:03 PM
Ratchet88 Ratchet88 is offline
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Default Re: 1923 Fairbanks Morse Model Z Problems

Do You Know Where I Can Get A New Plug???????
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Old 06-01-2005, 03:57:43 PM
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Default Re: 1923 Fairbanks Morse Model Z Problems

Napa or any good auto parts should be able to get them or several of the site sponsers here on Harrys has them. I dont rembemer the no. but one of the other guys should know. If no one answers here post over on the stack. champ. and autolite still make them.BobRR
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Old 06-28-2005, 09:19:14 PM
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Default Re: 1923 Fairbanks Morse Model Z Problems

Try a new spark plug. I have had engines with the same symptoms before and it will drive you nuts. It is not uncommon for a given sparkplug to light up
outside the engine while you are testing it looking for a spark but then not spark properly under compression after you put it back in the engine. By installing a new one you have eliminated one possibility fairly inexpensively.
Timing is critical on all of the Fairbanks engines that I have worked on...if the timing is off they are hard to start and will not run well. The particular teeth on the pinion, cam gear, and mag gear that are used for the timing of the engine have one side filed on a slant to distinguish them. Also check to be sure that your exhaust valve is timed to open and close at the correct times.
Good Luck!
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Old 07-03-2005, 10:51:13 PM
Andrew Mackey Andrew Mackey is offline
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Exclamation Re: 1923 Fairbanks Morse Model Z Problems

If the plug has been wet with fuel, it is probably shorting on compression. The new gasoline will carry current when under compression. Your plug will fire out of the engine, but will not fire in the cylender. The mis-firing you are getting, sounds like a bad plug. Make sure you have fresh fuel. Gas loses 50% of its burning ability in 30 days!
Andrew
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Old 07-04-2005, 08:46:17 AM
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Default Re: 1923 Fairbanks Morse Model Z Problems

check the compression too i have seen a lot of old engines with stuck rings etc
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Old 07-15-2005, 02:29:11 PM
Steve Sewell Steve Sewell is offline
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Default Re: 1923 Fairbanks Morse Model Z Problems

Does it have a fuel check valve? Is it possibly stuck open?
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Old 07-16-2005, 10:41:02 AM
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Default Re: 1923 Fairbanks Morse Model Z Problems

I have a 1922 dishpan that gave me a hard time at last show. Sometimes itwould not lock out and would continue to fire. In desperation I sprayed carb cleaner on lock out lever and it worked fine. Too much oil or grease on the timer I think. Also I noticed the intake valve was moving on lock out. Put heaver spring on intake valve and couldn't run better.Dick in central PA. Ps. plug # is autolite 3095 available from Harrys advertisers.

Last edited by Dick Graybill; 07-16-2005 at 10:45:25 AM. Reason: add spark plug #
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