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Topic: Engine monitoring tool for Cummins 6C8.3 (Read 535 times) previous topic - next topic

Engine monitoring tool for Cummins 6C8.3

Is there an engine monitoring tool available for the 1998 Cummins 6C8.3? This is the mechanical, not electronic engine. What does the ScanGauge D connect to? I cannot find a 6 or 9 pin diagnostic port, only the 12-pin rectangular Allison port.
1998 U295 36' No slides
Towing 2018 Jeep Wrangler
Previous rigs:
  1995 26' Fleetwood Flair
  1998 34' Fleetwood Bounder
  1997 40' Bluebird BMC
  1999 24' Winnebago Minnie Class C

Re: Engine monitoring tool for Cummins 6C8.3

Reply #1 –
There is no computer to plug into, so the answer is no.
Peter and Frieda Morin
1999 36ft. U320 Foretravel
Build # 5436
1998 Suzuki Sidekick Sport

Re: Engine monitoring tool for Cummins 6C8.3

Reply #2 –
It's a 12 valve. You just drive them!!!
1996 U295-36, Cummins 300hp, 8.3. Build number 4864. Vin number 1F97D536XTNO54271. Purchased October 31, 2019.

Re: Engine monitoring tool for Cummins 6C8.3

Reply #3 –
C8.3 all mechanical engine owners don't need no stinkin' high falootin' engine monitors.

Does it start?  YES.  Do you have oil pressure?  YES.  GOOD TO GO!  :thumbsup:

1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Engine monitoring tool for Cummins 6C8.3

Reply #4 –
If it doesn't start fuel filters or fuel solenoid. If it is the fuel solenoid some hay wire, string
or a tie wrap will get you going.
Peter and Frieda Morin
1999 36ft. U320 Foretravel
Build # 5436
1998 Suzuki Sidekick Sport

Re: Engine monitoring tool for Cummins 6C8.3

Reply #5 –
An engine monitor would help us diagnose the lack of power and the question of whether the tach is displaying accurately, as described in this post from last week: Slow engine warm up
1998 U295 36' No slides
Towing 2018 Jeep Wrangler
Previous rigs:
  1995 26' Fleetwood Flair
  1998 34' Fleetwood Bounder
  1997 40' Bluebird BMC
  1999 24' Winnebago Minnie Class C

Re: Engine monitoring tool for Cummins 6C8.3

Reply #6 –
Don't think a monitor would help in that case,maybe for the tach but we already said the tach is off somewhat,no monitor will
detect a clogged air or fuel filter or valves in need of adjustment.Try and do the things we suggested and go from there.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: Engine monitoring tool for Cummins 6C8.3

Reply #7 –
Quote from: John44 –
Don't think a monitor would help in that case,maybe for the tach but we already said the tach is off somewhat,no monitor will
detect a clogged air or fuel filter or valves in need of adjustment.Try and do the things we suggested and go from there.
I installed a mechanical gauge for checking the pressure on the hand pump into the primary filter and also a gauge for the discharge side of the secondary filter. Easy to see  if the filters have a restriction. It's an electronic engine but these gauges are good for mechanical or electronic engines. See my old posts for location, etc. Will work for Detroit, Cummins or CAT. Won't detect a stuck fuel solenoid but will detect a weak Cummins lift pump.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: Engine monitoring tool for Cummins 6C8.3

Reply #8 –
I use a hand held tach to set the tach on the Dynasty I had. I also lost power and with a gauge
I found I had low fuel pressure which turned out to be a worn out pressure relief valve on the
side of the injection pump.
Peter and Frieda Morin
1999 36ft. U320 Foretravel
Build # 5436
1998 Suzuki Sidekick Sport
 

Re: Engine monitoring tool for Cummins 6C8.3

Reply #9 –
Along with our mechanical fuel pump swap, we added an electric dash fuel pressure gauge and swapped out fuel return spring-valve on engine-side of mechanical injector pump. We now have a bit more power that would attribute to previously having fuel starvation.