do diesels run cooler than gas engines? after 3 hrs of brush hogging in 80 degree weather, my temp gauge only goes up maybe 1/4. now, i know this doesn't tell me a whole lot since it's not calibrated w/ temp marks. if i knew roughly where the temps should be, maybe i could do a rough check w/ an infrared heat gun.
engine temp of running diesel
- Thread starter defed
- Start date
- Views: 18889
RoyJackson
Rest in Peace
- Joined
- Nov 17, 2001
- Messages
- 23,144
- Location
- Bethel, Vermont
- Tractor
- John Deere 4052R Cab,, Deere 855D UTV, Z920A Zero Turn Mower and assorted implements
Hi Defed!
Your temp gage is right where it should be, so relax. Yes, diesels run cooler.
Just watch if it starts creeping up. If it does, take a stiff bristled brush (a 2"-3" paint brush with the bristles cut down to ¾" works great) to clean off your front and side grills. That brush is a good thing to keep in your left fender storage bin.
BTW, you and I were both concerned about how spongy our range and gearshift levers were. I did get with one of my dealer's techs...that spongy feel is perfectly normal.
RalphVa
Super Member
- Joined
- Dec 19, 2003
- Messages
- 7,885
- Location
- Charlottesville, VA, USA
- Tractor
- JD 2025R, previously Gravely 5650 & JD 4010 & JD 1025R
Our diesel cars we've had run the same 190 F temperature (set by thermostat) as a gas engine vehicle. Our 1983 Benz's temperature started going a bit higher as it accumulated miles and stretched its timiing chain such that the valve timing finally ended up being a bit retarded. It would run about 90-95 C instead of its normal of 85 C in the first approximately 150k miles of its life. Replacing the timing chain brought the temperature of operation back down to the 85 C set by the thermostat.
Our new VW TDI runs mid gauge same as our gas Tacoma and gas VW Cabrio. Mid gauge is 190 F on all 3.
Diesel exhaust is cooler. This is one way it gets its higher efficiency. The higher combustion pressure causes more cooling of the exhaust gas when the pressure is released.
Ralph
Our new VW TDI runs mid gauge same as our gas Tacoma and gas VW Cabrio. Mid gauge is 190 F on all 3.
Diesel exhaust is cooler. This is one way it gets its higher efficiency. The higher combustion pressure causes more cooling of the exhaust gas when the pressure is released.
Ralph
JD755
Platinum Member
On many JD tractors there is a removable screen in front of the radiator that can/should be removed regularly and cleaned. However over time there is still debris that will get through or around the screen and attach to the radiator. With the screen removed you can see the debris down the screen slot but other than shooting some air (at a vertical angle) down there it is really hard to get to. Poking a tool down there risks damaging the radiator fins. I found a Fuller Brush (remember them?) sold at Lowes that is designed for cleaning the vent at the front of a clothes dryer where the filter sits works great. The bristles are designed to do no harm while somehow really grabbing all the dead grass and dandelion seeds from the radiator.
Attachments
RoyJackson
Rest in Peace
- Joined
- Nov 17, 2001
- Messages
- 23,144
- Location
- Bethel, Vermont
- Tractor
- John Deere 4052R Cab,, Deere 855D UTV, Z920A Zero Turn Mower and assorted implements
Thanks for the tip about that Fuller Brush, JD755!
BTW, that cooler running is good....BUT (always a "BUT", eh?) cooler running during idling isn't a good thing. That engine can soot up after extended idling.
So I suggest you don't idle for more then 5-10 minutes...and even then, run at a fast idle (1200-1500 RPM).
(for defed) I doubt your 4300 ever overheats or stalls, but if it does, restart ASAP. Stalled engines can become a heatsink. The only time you should not restart is if you lose your coolant (puncture the radiator, for example).
BTW, that cooler running is good....BUT (always a "BUT", eh?) cooler running during idling isn't a good thing. That engine can soot up after extended idling.
So I suggest you don't idle for more then 5-10 minutes...and even then, run at a fast idle (1200-1500 RPM).
(for defed) I doubt your 4300 ever overheats or stalls, but if it does, restart ASAP. Stalled engines can become a heatsink. The only time you should not restart is if you lose your coolant (puncture the radiator, for example).
Last edited:
Need help My 332 Garden tractor Radiator cap Keeps coming loose and My coolant runs out. I need a new Radiator cap and unable to find one what pressure should I buy? No Dealers around!
Thanks for any help !
jonesiera@hotmail.com
Thanks for any help !
jonesiera@hotmail.com
Acehardly
Bronze Member
I know my 955 does not get above 160-165 deg. I have always thought that was low. I guess it is OK.
Tony
Tony
RoyJackson
Rest in Peace
- Joined
- Nov 17, 2001
- Messages
- 23,144
- Location
- Bethel, Vermont
- Tractor
- John Deere 4052R Cab,, Deere 855D UTV, Z920A Zero Turn Mower and assorted implements
If it's a Deere, contact your closest Deere dealer.
If another brand, contact the manufacturer (web search).
JD755
Platinum Member
The 332 is a Deere with a 16 hp Yanmar 3 cylinder diesel engine. Same family as used in the larger compacts. The radiator cap part number is AM105793 . No idea what the pressure rating is. Agree with Roy, call the nearest dealer regardless of how far he is. Or do it on the web through JD Parts. See about getting one sent to you.
