Co-op No. 3 Tractor w/Chrysler

[co-op No.3]

Have a 1950 Co-op No. 3 w/ Ind. Chrysler 8a227 on LP. Is hard to start when engine is cold. Don't have any spec. Help!

Edited February 14, 2012 by co-op No.3

[Todd B]

Pump the gas 3 times, pull the choke and hit the starter. works everytime on my dodges.

Todd B

[Don Coatney]

Pump the gas 3 times' date=' pull the choke and hit the starter. works everytime on my dodges.

Todd B[/quote']

Dont think that would work on an engine using LP as fuel.

[Dave72dt]

Is the tractor new to you? Did it just begin having starting problems? Cold as in initial starting cold or when it's cold outside? Do you have spark? What have you done as far as testing and troubleshooting?

[Todd B]

Dont think that would work on an engine using LP as fuel.

I missed the LP thing.

[HanksB3B]

[Rusty O'Toole]

How is the compression? If compression is down nothing you can do will make it easy to start.

If it has good compression ( 100 pounds or more) then you need a tuneup. Perhaps someone can give you the specs for an industrial engine. If not the same year pickup truck should work.

The main difference so far as I know, is .002 more clearance on the valves.

[co-op No.3]

Is the tractor new to you? Did it just begin having starting problems? Cold as in initial starting cold or when it's cold outside? Do you have spark? What have you done as far as testing and troubleshooting?

Yes tractoris new to me.It had starting problems when I got it,it was an estate sale.Tractor in metel building no insulation or heat,temp outside around 35.Yes have spark.

New Coil. Plug & coil wires w/metal strand new,Plugs new, points & cond. new. Has Century LP system removed, repaired & installed. Can't find timming marks on front pulley or on fly wheel.

[jpwuertz]

Yes all LP's are harder to start when cold. There is a vapor and a liquid valve on the tank and when starting the vapor valve should be open. Set the throttle in the idle position and pull the choke, this should help in the starting process. After it starts let it warm up and then you can open the liquid valve and close the vapor valve.

[fatFreddie]

I am not familiar with the LP setup on the CoOp, but being an old farmer I have LP on my AC WD45 and it is only liquid that goes to the regulator. I have to use a BERNZ-O-MATIC propane torch to pre heat the intake mainfold in really cold weather to get the thing to come to life....Hey maybe you can be some help to 1941RICK on the other forum and post a PIC of the oil pan of that old tractor for him. Also a great place for more information is the forum on Yesterdays Tractors at ytmag.com

[NiftyFifty]

Take all that LP stuff off and go back to carb and gas! I hate propane, back in the day we had a few kcars and a few other vehicles come into the shop I worked at... Never ran perfect and the price of propane here you might as well burn gas

[greg g]

Do a static timing procedure to arrive at TDC for number one, then you can put a reference mark on the pulley. Pull the plugs so it easy to hand turn or use the crank if it has one. Put your thumb over #1 plug hole andy you can feel the pressure build, then bring it up to tdc. Then adjust your dist cam so the points are wide open, (good time to check the gap) This will put the timing at TDC where most gas mopar Flatheads through the mid 50's are timed. I can't speculate where initial timing might be set for LP, however, a lot of clark forklifts use mopar flatheads, and many run on propane or LG.

So you might be able to find tune up specs for them. Can't imagin the tractor engine would be tuned a far piece off the fork lift settings. Is your system 6 V or 12 V? If 12 V you can hook up the coil through a nonresisted circuit to power the coil with 12V for starting and initial cold running. Some solenoids are set up to provide 12 V power when the key is in the start position then swith to a resisted circuit for normal running.

That may help your cold start problem.

So would a block heater or magnetic oil pan heater

[mechresto]

Have a 1950 Co-op No. 3 w/ Ind. Chrysler 8a227 on LP. Is hard to start when engine is cold. Don't have any spec. Help!

That is one EXTREMELY rare tractor you have purchased. There was only a handfull of #3 CO-OP's built with LP. Avg price in non running condition about $9000 US.

Looked thru all of my old manuals and I have nothing in the way of specs for the LP side, however the rest of the specs as far as tuning are the same as the truck engine. I do have the original nebraska field test data for the #3gas, in PDF format if interested, shoot me an email and I'll send it to ya.

Hope you get the answers you need to the LP side.

Bryan

[co-op No.3]

That is one EXTREMELY rare tractor you have purchased. There was only a handfull of #3 CO-OP's built with LP. Avg price in non running condition about $9000 US.

Looked thru all of my old manuals and I have nothing in the way of specs for the LP side, however the rest of the specs as far as tuning are the same as the truck engine. I do have the original nebraska field test data for the #3gas, in PDF format if interested, shoot me an email and I'll send it to ya.

Hope you get the answers you need to the LP side.

Bryan

Thank for responding! Please send what you have to me, at slims9957@gmail.com Thanks in advance.

[wayfarer]

Recall that many small forklifts use LP and propane as fuels so you might talk with a repair shop or mobile repair guy. my 2¢

[co-op No.3]

Do a static timing procedure to arrive at TDC for number one, then you can put a reference mark on the pulley. Pull the plugs so it easy to hand turn or use the crank if it has one. Put your thumb over #1 plug hole andy you can feel the pressure build, then bring it up to tdc. Then adjust your dist cam so the points are wide open, (good time to check the gap) This will put the timing at TDC where most gas mopar Flatheads through the mid 50's are timed. I can't speculate where initial timing might be set for LP, however, a lot of clark forklifts use mopar flatheads, and many run on propane or LG.

So you might be able to find tune up specs for them. Can't imagin the tractor engine would be tuned a far piece off the fork lift settings. Is your system 6 V or 12 V? If 12 V you can hook up the coil through a nonresisted circuit to power the coil with 12V for starting and initial cold running. Some solenoids are set up to provide 12 V power when the key is in the start position then swith to a resisted circuit for normal running.

That may help your cold start problem.

So would a block heater or magnetic oil pan heater

Forgot about static timming. was retarted mush to mush ,advenced to tdc and it started right now.

Edited February 18, 2012 by co-op No.3

[greg g]

Did you put a mark on your crank pulley???