Starting cold engine in hot weather

chapi0351 · 06-09-2010, 08:37 PM

I have an 02 1500 that stalls immediately after starting a cold engine in hot weather. I start again and it stays running. When I start in cool or cold weather it does not stall or if I let it set for 1-2 hours it does not stall. I live in Central Texas where it is hot from May until October. This only happens once the temperature gets in the high 80's and above.
I clean throttle body every 6 months.

Any Ideas?
thanks in advance

**Cajunrider** · 06-09-2010, 08:43 PM

The only thing that comes to mind is colder air is denser which may give you a richer fuel mixture than warm air. That would explain why it doesn't stall in cooler weather. Just a stab in the dark.

ndbigfish · 06-09-2010, 08:58 PM

If it is carb model:

If the engine is cold pull the choke knob all the way out and start. If it doesn't catch right away then twist the throttle once in addition to the above.

Above 95°: do not use the choke knob; twist the throttle once and start.

This works 50 miles south of you.

chapi0351 · 06-09-2010, 09:06 PM

Quote:

Originally Posted by ndbigfish

If it is carb model; pull the choke half way, twist the throttle once and start. The "choke" knob can be pushed in almost immediately. This works 50 miles south of you.

thanks, but it is injected

**Cajunrider** · 06-09-2010, 10:18 PM

Chappi, Being it is a FI model, a fuel processor would probably solve your problem.

**ringadingh** · 06-10-2010, 02:05 PM

Try turning the key on and off a couple of times, this will prime the throttle body. Perhaps the pump is weak or doesn't hold pressure right away.

chapi0351 · 06-14-2010, 08:51 PM

that seems to help--thanks Does this mean a hew pump?

AlabamaNomadRider · 06-18-2010, 12:06 AM

Mine does the same thing and has since I bought it new last year. If I open throttle a bit it will keep running. If not it will die about 10 times out of 10. After it dies and I hit the starter it starts right up and runs without giving it any throttle. I would think that with fuel injection it would keep running just like a car, but it sure doesn't. I have never really worried about it. Guess if I pull the choke out a bit before trying to start it guess it would keep running.

**ringadingh** · 06-18-2010, 07:44 AM

Quote:

Originally Posted by chapi0351

that seems to help--thanks Does this mean a hew pump?

It may mean your pump isn't putting out the pressure it needs to prime the system at startup.
Before I go replacing the pump Id check the internal tank filter and see if its plugged. That may be all it is restricting your fuel flow.
Im not sure if there is a test for the fuel pump, I assume there is, that will determine if its a pump or plugged filter.

chapi0351 · 10-29-2010, 03:35 PM

The cool weather is back and it starts and never stalls, just idles nice and smooth. Got to be what cajunrider said about the cooler air being denser and give the engine a richer mix.

macmac · 10-29-2010, 05:44 PM

yeah it's lean and you NEED a fuel processor, all injected Nomads do. If you do nothing else all Nomads NEED that.

**ringadingh** · 10-29-2010, 09:23 PM

If you move up north where I am, just think how nice your bike will run for much of the season.

AlabamaNomadRider · 11-03-2010, 01:24 PM

But Steve think how short your riding season is. Burrr it's cold up there.

redjay · 11-03-2010, 03:39 PM

We are scraping the ice off the car windows in the mornings already.

**ringadingh** · 11-03-2010, 04:08 PM

Ive ridden the bike in to work every day so far this week, today was the warm day at 24f at 5:30am. The motor really seems to run better in the colder temps, but I lose about 50 miles to the tank in mileage.

06-09-2010, 08:37 PM	#1
chapi0351 Member Join Date: May 2009 Location: Austin, TX Posts: 60	Starting cold engine in hot weather I have an 02 1500 that stalls immediately after starting a cold engine in hot weather. I start again and it stays running. When I start in cool or cold weather it does not stall or if I let it set for 1-2 hours it does not stall. I live in Central Texas where it is hot from May until October. This only happens once the temperature gets in the high 80's and above. I clean throttle body every 6 months. Any Ideas? thanks in advance Login or Register to Remove Ads
	0

06-09-2010, 08:43 PM	#2
Cajunrider Join Date: Apr 2008 Location: (SE Louisiana) Posts: 8,340	Starting cold engine in hot weather The only thing that comes to mind is colder air is denser which may give you a richer fuel mixture than warm air. That would explain why it doesn't stall in cooler weather. Just a stab in the dark. __________________ 2016 Electra Glide Ultra Limited CVO Palladium Silver / Phantom Blue 110 cu in SE 2012 Electra Glide Ultra Limited (Traded 6/22/16) Tequila Sunrise / HD Orange Vance & Hines true dual headers Rinehart 4" slip ons Screamin Eagle Super Tuner Screamin Eagle Stage 1 intake Dyno tuned H.O.G.# 4514015 2007 Nomad 1600 (Traded 6/23/12) VBA #482
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06-09-2010, 08:58 PM	#3
ndbigfish Sr. Member Join Date: Mar 2009 Location: New Braunfels, Texas Posts: 1,162	Starting cold engine in hot weather If it is carb model: If the engine is cold pull the choke knob all the way out and start. If it doesn't catch right away then twist the throttle once in addition to the above. Above 95°: do not use the choke knob; twist the throttle once and start. This works 50 miles south of you. __________________ Brik VBA #1047 07 Electra Glide Ultra (43,300 & counting) 03 Nomad - 37,972 (traded 5/6/13) 99 Nomad - Only a memory since 4/27/13
	0

06-09-2010, 10:18 PM	#5
Cajunrider Join Date: Apr 2008 Location: (SE Louisiana) Posts: 8,340	Starting cold engine in hot weather Chappi, Being it is a FI model, a fuel processor would probably solve your problem. __________________ 2016 Electra Glide Ultra Limited CVO Palladium Silver / Phantom Blue 110 cu in SE 2012 Electra Glide Ultra Limited (Traded 6/22/16) Tequila Sunrise / HD Orange Vance & Hines true dual headers Rinehart 4" slip ons Screamin Eagle Super Tuner Screamin Eagle Stage 1 intake Dyno tuned H.O.G.# 4514015 2007 Nomad 1600 (Traded 6/23/12) VBA #482 Login or Register to Remove Ads
	0

06-10-2010, 02:05 PM	#6
ringadingh Join Date: Aug 2007 Location: Newmarket Ontario Canada Posts: 35,387	Starting cold engine in hot weather Try turning the key on and off a couple of times, this will prime the throttle body. Perhaps the pump is weak or doesn't hold pressure right away. __________________ 2002 Nomad aka Bountyhunter VBA #27 VROC #18951
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06-14-2010, 08:51 PM	#7
chapi0351 Member Join Date: May 2009 Location: Austin, TX Posts: 60	Starting cold engine in hot weather that seems to help--thanks Does this mean a hew pump?
	0

06-18-2010, 12:06 AM	#8
AlabamaNomadRider Sr. Contributor Join Date: Jul 2009 Location: Boaz, Alabama Posts: 13,742	Starting cold engine in hot weather Mine does the same thing and has since I bought it new last year. If I open throttle a bit it will keep running. If not it will die about 10 times out of 10. After it dies and I hit the starter it starts right up and runs without giving it any throttle. I would think that with fuel injection it would keep running just like a car, but it sure doesn't. I have never really worried about it. Guess if I pull the choke out a bit before trying to start it guess it would keep running. __________________ Gene Cross, Jr. Boaz, Alabama KawaNOW/VBA #1181
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10-29-2010, 03:35 PM	#10
chapi0351 Member Join Date: May 2009 Location: Austin, TX Posts: 60	Starting cold engine in hot weather The cool weather is back and it starts and never stalls, just idles nice and smooth. Got to be what cajunrider said about the cooler air being denser and give the engine a richer mix.
	0

10-29-2010, 05:44 PM	#11
macmac Sr. Contributor Join Date: Apr 2008 Location: Tamworth New Hampster 06 1600 Posts: 12,484	Starting cold engine in hot weather yeah it's lean and you NEED a fuel processor, all injected Nomads do. If you do nothing else all Nomads NEED that. __________________ 06 1600 Nomad Just call me Mac molon labe come and get it
	0

10-29-2010, 09:23 PM	#12
ringadingh Join Date: Aug 2007 Location: Newmarket Ontario Canada Posts: 35,387	Starting cold engine in hot weather If you move up north where I am, just think how nice your bike will run for much of the season. __________________ 2002 Nomad aka Bountyhunter VBA #27 VROC #18951
	0

11-03-2010, 01:24 PM	#13
AlabamaNomadRider Sr. Contributor Join Date: Jul 2009 Location: Boaz, Alabama Posts: 13,742	Starting cold engine in hot weather But Steve think how short your riding season is. Burrr it's cold up there. __________________ Gene Cross, Jr. Boaz, Alabama KawaNOW/VBA #1181
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11-03-2010, 03:39 PM	#14
redjay Top Contributor Join Date: Feb 2008 Location: Ontario Posts: 7,017	Starting cold engine in hot weather We are scraping the ice off the car windows in the mornings already.
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11-03-2010, 04:08 PM	#15
ringadingh Join Date: Aug 2007 Location: Newmarket Ontario Canada Posts: 35,387	Starting cold engine in hot weather Ive ridden the bike in to work every day so far this week, today was the warm day at 24f at 5:30am. The motor really seems to run better in the colder temps, but I lose about 50 miles to the tank in mileage. __________________ 2002 Nomad aka Bountyhunter VBA #27 VROC #18951
	0

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