Harder starting after running for awhile

flavor · 08-07-2018, 08:33 AM

1600 Nomad runs strong but after running awhile and stopping for a break, it takes more cranks for the engine to turn over. Any ideas?

**cnc** · 08-07-2018, 09:49 AM

Wow look who came out of the wood work?

First off how old is the battery Jim?

flavor · 08-07-2018, 10:57 AM

Quote:

Originally Posted by cnc

Wow look who came out of the wood work?

First off how old is the battery Jim?

Hey brother......

A number of years old. Seems to crank plenty fast enough. Just takes extra cranks to start after warm.

flavor · 08-07-2018, 11:08 AM

Norm I guess you're thinking the reason is starter turning slower because battery may not be up to where it should be. Is that where you're going? Why when cold does it start quicker if that's the case.

**cnc** · 08-07-2018, 12:57 PM

Well first I was just trying to establish if the battery was something to look at. Older batterys put out less umph and on these FI bikes, despite the starter cranking the engine a what appears to be a decent speed, there needs to be enough juice left for spark and injectors. If in fact a weaker battery is the cause, a possible explanation could be higher resistance in electrical connections when everything is hot. One could get a better idea by testing the voltage of the battery with a multi meter, after several hrs rest, while cranking cold and then while cranking hot.

DragonLady58 · 08-07-2018, 04:59 PM

If its still cranking fast, but makes a few more turns at the crank before it catches, I'd lean out my efi controller when starting. Also, I'd give the engine a good basic tuneup. Most common causes of this is buildup in the fuel system....a can or 2 of seafoam should cure that, with a plug and air filter cleaning....
Also, test the battery like they said. The ign system is voltage sensitive....not enough, it'll run crappy or not run at all....

flavor · 08-07-2018, 06:11 PM

The battery is 5 or 6 years old. I'll have to check it. TY.

**MAS Tequila** · 08-07-2018, 08:04 PM

Which fuel module do you have?

The PC III-V are known to not fire the injectors until pressure has built up? but it sometimes won’t realize the pressure never dropped, thus not allowing the injectors to fire.

After the engine goes through enough rpms to alleviate the fuel pressure it will fire the injectors.

Sometimes with a good bang.

I had 2 MeanStreaks like that.

flavor · 08-08-2018, 07:33 PM

I have the Dobeck TFI. I'm going to check the battery the next time I get a chance to ride for a few hours.

Quote:

Originally Posted by MAS Tequila

Which fuel module do you have?

The PC III-V are known to not fire the injectors until pressure has built up? but it sometimes won’t realize the pressure never dropped, thus not allowing the injectors to fire.

After the engine goes through enough rpms to alleviate the fuel pressure it will fire the injectors.

Sometimes with a good bang.

I had 2 MeanStreaks like that.

flavor · 08-09-2018, 07:10 PM

Checked battery when bike was cold. 12.5 v. Going to add seafoam. No pop when starting after engine warm

**cnc** · 08-09-2018, 07:58 PM

Quote:

Originally Posted by flavor

Checked battery when bike was cold. 12.5 v. Going to add seafoam. No pop when starting after engine warm

12.5 to 12.7 is normal at rest, what you want to see next is what the voltage drops to while starting it both cold and again when hot

flavor · 08-24-2018, 05:58 AM

Put seafoam in tank as I haven't done it for awhile. Purchased new battery and installed it.
Didn't realize how slow engine was turning because it always started right up when cold. Even though it seemed to crank ok I now realize the NAD needed a new battery. Runs better and issues seem to have been corrected. TY all (Norm). (I could probably start a diesel truck now.......)

**cnc** · 08-24-2018, 05:00 PM

Glade to hear Jim.

08-07-2018, 08:33 AM	#1
flavor Sr. Member Join Date: Apr 2008 Location: RI Posts: 1,351	Harder starting after running for awhile 1600 Nomad runs strong but after running awhile and stopping for a break, it takes more cranks for the engine to turn over. Any ideas? Login or Register to Remove Ads
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08-07-2018, 09:49 AM	#2
cnc Join Date: May 2009 Location: Montreal QC Posts: 12,034	Wow look who came out of the wood work? First off how old is the battery Jim? __________________ Norm Ward 2008 blue / silver nomad kawanow / VBA #01136
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08-07-2018, 11:08 AM	#4
flavor Sr. Member Join Date: Apr 2008 Location: RI Posts: 1,351	Norm I guess you're thinking the reason is starter turning slower because battery may not be up to where it should be. Is that where you're going? Why when cold does it start quicker if that's the case. Last edited by flavor; 08-07-2018 at 11:16 AM.
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08-07-2018, 12:57 PM	#5
cnc Join Date: May 2009 Location: Montreal QC Posts: 12,034	Well first I was just trying to establish if the battery was something to look at. Older batterys put out less umph and on these FI bikes, despite the starter cranking the engine a what appears to be a decent speed, there needs to be enough juice left for spark and injectors. If in fact a weaker battery is the cause, a possible explanation could be higher resistance in electrical connections when everything is hot. One could get a better idea by testing the voltage of the battery with a multi meter, after several hrs rest, while cranking cold and then while cranking hot. __________________ Norm Ward 2008 blue / silver nomad kawanow / VBA #01136 Login or Register to Remove Ads
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08-07-2018, 04:59 PM	#6
DragonLady58 Sr. Member Join Date: Jul 2016 Location: Somewhere South of Alaska.... Posts: 2,351	If its still cranking fast, but makes a few more turns at the crank before it catches, I'd lean out my efi controller when starting. Also, I'd give the engine a good basic tuneup. Most common causes of this is buildup in the fuel system....a can or 2 of seafoam should cure that, with a plug and air filter cleaning.... Also, test the battery like they said. The ign system is voltage sensitive....not enough, it'll run crappy or not run at all.... __________________ --------------------- Don't start no schit, there won't be no schit.... My Sarcasm is directly proportional to the amount of Stupidity involved --------------------- VBA#03239 VROC#37400 VRA --------------------- 2014 Vaquero 2001 Nomad FI 2003 Street Glide (sold) 1500 Meanie, fresh rebuild (sold) 90s BUBF Bobber (sold) 2001 UltraCycle FatPounder (Sold) 1975 HD ElectraGlide (Sold) 1982 Kawasaki Z1 Chopper (Sold) Suck It Up & Ride! Last edited by DragonLady58; 08-07-2018 at 05:02 PM.
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08-07-2018, 06:11 PM	#7
flavor Sr. Member Join Date: Apr 2008 Location: RI Posts: 1,351	The battery is 5 or 6 years old. I'll have to check it. TY.
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08-07-2018, 08:04 PM	#8
MAS Tequila Join Date: Jan 2009 Location: Psychiatric Ward FL Posts: 3,429	Which fuel module do you have? The PC III-V are known to not fire the injectors until pressure has built up? but it sometimes won’t realize the pressure never dropped, thus not allowing the injectors to fire. After the engine goes through enough rpms to alleviate the fuel pressure it will fire the injectors. Sometimes with a good bang. I had 2 MeanStreaks like that. __________________ MT 2016 FLHP Psychiatric Ward FL VBA 936
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08-09-2018, 07:10 PM	#10
flavor Sr. Member Join Date: Apr 2008 Location: RI Posts: 1,351	Checked battery when bike was cold. 12.5 v. Going to add seafoam. No pop when starting after engine warm Last edited by flavor; 08-09-2018 at 07:19 PM.
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08-24-2018, 05:58 AM	#12
flavor Sr. Member Join Date: Apr 2008 Location: RI Posts: 1,351	Put seafoam in tank as I haven't done it for awhile. Purchased new battery and installed it. Didn't realize how slow engine was turning because it always started right up when cold. Even though it seemed to crank ok I now realize the NAD needed a new battery. Runs better and issues seem to have been corrected. TY all (Norm). (I could probably start a diesel truck now.......)
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08-24-2018, 05:00 PM	#13
cnc Join Date: May 2009 Location: Montreal QC Posts: 12,034	Glade to hear Jim. __________________ Norm Ward 2008 blue / silver nomad kawanow / VBA #01136
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