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Natural Gas GE/Briggs&Stratton Generator No Start #4626804
01/07/18 12:15 PM
01/07/18 12:15 PM
Joined: May 2012
Posts: 452
Connecticut
Sam_Julier Offline OP
Sam_Julier  Offline OP
Joined: May 2012
Posts: 452
Connecticut
I have an 8kw GE backup generator. Engine is a Briggs&Stratton Model 310000, 500cc, single cylinder. I don't know if the engine is Intek or Vanguard model. The engine has 30.5 hours total time. Engine would not start at 5 degrees and shut off the exercise cycle. Attempts to start in Manual mode were successful but only on the second or third try. Spark plug was changed from the OE (Champion RC12YC) to the Briggs&Stratton Premium Platinum 5066K plug. At 0 degrees this morning the engine started the first time but after 33 seconds of roughness. But it started on its own. I am thinking of having a service call to check the fuel regulator. Are these engines running on NG typically harder to start than gasoline? I've noticed that when the temp is < 10 degrees the engine stumbles for 10-20 seconds before catching. Thanks in advance for any suggestions.

Sam

Last edited by Sam_Julier; 01/07/18 12:19 PM.

2005 Highlander 3.3L PC Duron 0W30, 47k
1993 Volvo 245 Delo 10W30, 140k
1993 Volvo 244 Delo 10W30, 152k

Re: Natural Gas GE/Briggs&Stratton Generator No Start [Re: Sam_Julier] #4626810
01/07/18 12:20 PM
01/07/18 12:20 PM
Joined: Dec 2016
Posts: 6,226
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 6,226
Waco, TX
It's so hard to say without looking at more info/docs.

I would like to know what type of "enriching circuit" is used at those cold temps.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Natural Gas GE/Briggs&Stratton Generator No Start [Re: Sam_Julier] #4626816
01/07/18 12:25 PM
01/07/18 12:25 PM
Joined: Oct 2014
Posts: 11,827
Idaho
CT8 Offline
CT8  Offline
Joined: Oct 2014
Posts: 11,827
Idaho
Spark and fuel,,,, go from there.


"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf
Re: Natural Gas GE/Briggs&Stratton Generator No Start [Re: Linctex] #4626817
01/07/18 12:25 PM
01/07/18 12:25 PM
Joined: May 2012
Posts: 452
Connecticut
Sam_Julier Offline OP
Sam_Julier  Offline OP
Joined: May 2012
Posts: 452
Connecticut
Originally Posted By: Linctex
It's so hard to say without looking at more info/docs.

I would like to know what type of "enriching circuit" is used at those cold temps.


The manuals don't mention a thing about this.


2005 Highlander 3.3L PC Duron 0W30, 47k
1993 Volvo 245 Delo 10W30, 140k
1993 Volvo 244 Delo 10W30, 152k

Re: Natural Gas GE/Briggs&Stratton Generator No Start [Re: Sam_Julier] #4626821
01/07/18 12:28 PM
01/07/18 12:28 PM
Joined: Mar 2008
Posts: 5,839
South Florida
bubbatime Offline
bubbatime  Offline
Joined: Mar 2008
Posts: 5,839
South Florida
I dont think you have a problem. Engines are hard to start when its cold. Especially engines that haven't been ran in a while. Maybe run your engine more often, especially right before you are expecting a big storm.


17 Chrysler Pacifica Mobil 1 5W30
13 Yamaha XT250 Valv MC 10W40
12 Suzuki S40 Rotella 15W40
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06 GMC Sierra Nextgen 10W30


Re: Natural Gas GE/Briggs&Stratton Generator No Start [Re: Sam_Julier] #4626836
01/07/18 12:38 PM
01/07/18 12:38 PM
Joined: Nov 2007
Posts: 258
Richmond, VA
DNVDMAX Offline
DNVDMAX  Offline
Joined: Nov 2007
Posts: 258
Richmond, VA
Cold, non-synthetic oil possibly contributing to the problem?


06 GMC 2500HD DMAX EFILIVE M1 TDT 5w-40 FRAM Ultra
91 GMC K1500 5.7L 5w-30 Quaker State HM Bosch D+
72 Nova 350 SBC 74mm AirWerks Turbo 15w-40 HDEO
Re: Natural Gas GE/Briggs&Stratton Generator No Start [Re: Sam_Julier] #4626843
01/07/18 12:43 PM
01/07/18 12:43 PM
Joined: Aug 2003
Posts: 10,774
Buffalo, NY
JTK Offline
JTK  Offline
Joined: Aug 2003
Posts: 10,774
Buffalo, NY
With the colder than normal ambient temps we're having and the draw on the natural gas infrastructure, it may not be getting quite enough NG to cold start. You could experiment by putting a heating pad around the carb/intake to see if it will (extreme) cold start easier.


2017 Ram 1500 4x4, 3.6L. 2016 Nissan Quest SV (Babe magnet IV)
Re: Natural Gas GE/Briggs&Stratton Generator No Start [Re: DNVDMAX] #4626844
01/07/18 12:45 PM
01/07/18 12:45 PM
Joined: May 2012
Posts: 452
Connecticut
Sam_Julier Offline OP
Sam_Julier  Offline OP
Joined: May 2012
Posts: 452
Connecticut
Originally Posted By: DNVDMAX
Cold, non-synthetic oil possibly contributing to the problem?


5W30 Havoline Pro DS Full Syn in the sump.


2005 Highlander 3.3L PC Duron 0W30, 47k
1993 Volvo 245 Delo 10W30, 140k
1993 Volvo 244 Delo 10W30, 152k

Re: Natural Gas GE/Briggs&Stratton Generator No Start [Re: JTK] #4626853
01/07/18 12:48 PM
01/07/18 12:48 PM
Joined: May 2012
Posts: 452
Connecticut
Sam_Julier Offline OP
Sam_Julier  Offline OP
Joined: May 2012
Posts: 452
Connecticut
Originally Posted By: JTK
With the colder than normal ambient temps we're having and the draw on the natural gas infrastructure, it may not be getting quite enough NG to cold start. You could experiment by putting a heating pad around the carb/intake to see if it will (extreme) cold start easier.


During the manual start tests I shut off the heat and on demand hot water - 317,000btu's together. Maybe it started faster but hard to tell.

Sam


2005 Highlander 3.3L PC Duron 0W30, 47k
1993 Volvo 245 Delo 10W30, 140k
1993 Volvo 244 Delo 10W30, 152k

Re: Natural Gas GE/Briggs&Stratton Generator No Start [Re: Sam_Julier] #4626857
01/07/18 12:50 PM
01/07/18 12:50 PM
Joined: Dec 2006
Posts: 1,693
NY, NY
NYEngineer Offline
NYEngineer  Offline
Joined: Dec 2006
Posts: 1,693
NY, NY
What are the plugs gapped at? They need to be at 20-22.

Re: Natural Gas GE/Briggs&Stratton Generator No Start [Re: NYEngineer] #4626861
01/07/18 12:52 PM
01/07/18 12:52 PM
Joined: May 2012
Posts: 452
Connecticut
Sam_Julier Offline OP
Sam_Julier  Offline OP
Joined: May 2012
Posts: 452
Connecticut
Originally Posted By: NYEngineer
What are the plugs gapped at? They need to be at 20-22.


Spec is .030. New plug installed today is exactly .030. Sam


2005 Highlander 3.3L PC Duron 0W30, 47k
1993 Volvo 245 Delo 10W30, 140k
1993 Volvo 244 Delo 10W30, 152k

Re: Natural Gas GE/Briggs&Stratton Generator No Start [Re: Sam_Julier] #4626871
01/07/18 12:58 PM
01/07/18 12:58 PM
Joined: Jun 2003
Posts: 33,073
ME
eljefino Offline
eljefino  Offline
Joined: Jun 2003
Posts: 33,073
ME
You potentially may not need an enriching circuit.

We have a choke on gasoline engines because some of the fuel doesn't atomize and remains as useless droplets that condense in the intake.

Natural gas is gas all the time and should be stoichometric. I tend to agree with the theory of your neighbors' houses using more gas for heat but we need to know what pressure is supposed to be at the street/ mainline level vs coming out of your meter.

I have a 3-way carb on my pull-cord generator, a chinese jobby. It came w/o instructions and has a choke but I assume just for gasoline use.

Re: Natural Gas GE/Briggs&Stratton Generator No Start [Re: Sam_Julier] #4626873
01/07/18 01:02 PM
01/07/18 01:02 PM
Joined: Jun 2003
Posts: 33,073
ME
eljefino Offline
eljefino  Offline
Joined: Jun 2003
Posts: 33,073
ME
Originally Posted By: Sam_Julier
Originally Posted By: JTK
With the colder than normal ambient temps we're having and the draw on the natural gas infrastructure, it may not be getting quite enough NG to cold start. You could experiment by putting a heating pad around the carb/intake to see if it will (extreme) cold start easier.


During the manual start tests I shut off the heat and on demand hot water - 317,000btu's together. Maybe it started faster but hard to tell.

Sam


Do you switch (almost) the whole house over for the ten minute run? I thought they just exercised without much of a load during the self-checks.

Re: Natural Gas GE/Briggs&Stratton Generator No Start [Re: eljefino] #4626889
01/07/18 01:11 PM
01/07/18 01:11 PM
Joined: May 2012
Posts: 452
Connecticut
Sam_Julier Offline OP
Sam_Julier  Offline OP
Joined: May 2012
Posts: 452
Connecticut
Originally Posted By: eljefino
Originally Posted By: Sam_Julier
Originally Posted By: JTK
With the colder than normal ambient temps we're having and the draw on the natural gas infrastructure, it may not be getting quite enough NG to cold start. You could experiment by putting a heating pad around the carb/intake to see if it will (extreme) cold start easier.


During the manual start tests I shut off the heat and on demand hot water - 317,000btu's together. Maybe it started faster but hard to tell.

Sam


Do you switch (almost) the whole house over for the ten minute run? I thought they just exercised without much of a load during the self-checks.


The exercise cycle runs weekly for 20 minutes with no load. It's primary purpose is to recharge the battery (I think). On the first of every month I flip the switch on the main panel to simulate power loss from the grid and exercise the generator too.

Sam


2005 Highlander 3.3L PC Duron 0W30, 47k
1993 Volvo 245 Delo 10W30, 140k
1993 Volvo 244 Delo 10W30, 152k

Re: Natural Gas GE/Briggs&Stratton Generator No Start [Re: Sam_Julier] #4626895
01/07/18 01:14 PM
01/07/18 01:14 PM
Joined: Jun 2003
Posts: 33,073
ME
eljefino Offline
eljefino  Offline
Joined: Jun 2003
Posts: 33,073
ME
^ smart.

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