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" I'll do a compression check and then do the ATF in the cylinders and do another one." Not ATF. Use oil. Minimum acceptable pressure is 90 lbs w/ the lowest pressure reading w/in 75% of the highest reading. Run the engine to operating temp, turn it off, remove all 4 plugs, remove the breather hose & make sure the choke and throttle are both open. Crank it at least 5 compression strokes or until the gauge stops moving. Write down the first compression reading (that is the valves seating) then write down the reading after 5 strokes or when it stops increasing. You should have two numbers for each cylinder. Then, add a tablespoon of oil to each cylinder & repeat the process, but you only need the final reading for each cylinder. Write down the results & post back for help figuring out what it all means. " I'm hoping that with a new 180 thermostat...." Try A&I part # A-11C15 or Beck/Arnley part # 143-0024 or NAPA part number THM 184 for 180* in hose t-stats. The car parts store folks are helpless w/o vehicle make/model/year info. Some can/will actually search on the number & cross reference, but more often than not, you will just get a dumb look. HINT: find a clerk near the age of your tractor..... ;) Try telling them that the t-stat is for your 1977 Renault R12 1.6L L4. All of my 180* t-stats are A&I A-11C15’s. They are a tight fit in an N hose, but they will fit. I’ve never used the Beck/Arnley or NAPA t-stats so I can’t help you w/ anything there but the part numbers. " One thing is I think the governor needs adjustment and/or rebuild. " Check out tip # 14 at the link.
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