Starting issues resolved! Hopefully

4196 Views 33 Replies 11 Participants Last post by Mc1, 24 h ago

Dewby

Discussion Starter · Nov 10, 2021

Hi all, been a while. As some of you know on a previous cb1000r I had a nightmare with starting issues. Cut a long story short. Honda bought the bike back off me because they couldn't sort it out. In 2013 I purchased another cb1000r and for roughly 4 years it ran sweet till. You guessed it. Intermittent starting. Changed battery twice, even tho sensors were passing I was swapping them all out. Stripped the bike right down. 3 pulse generators, cleaned injectors. Was starting to be a money pit. Bit the bullet and had it off the road for a few months and checked each wire in the harness. Noticed that at the ecu, the 33pin plug had a Intermittent connection when wobbled that reset the iacv. Sorted that and still Intermittent spark. Got back up to the fuse box and when moving it in a certain position I would get full spark back! Surprisingly a clean white spark that would jump an inch and half.
I took each individual spade out and soldered the crimped connections, cleaning and adding dielectric grease. Still Intermittent but better. I swapped the ignition relay for another relay that I know works as you can take it apart and check the contacts and every time I'm getting full spark! Bike starts first go every time.
Took the old relay apart and where the contacts are inside it was arcing quite bad where there wasn't a 100% connection.

Hope this helps someone that has similar problems.

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1 - 20 of 34 Posts

Arcimboldi

· #2 · Nov 10, 2021

Dewby said:
..

Hope this helps someone that has similar problems.

Congrats mate

This IS obstinate dedication.

Before some of our hairsplitmeisters and nitpick artists reach V1 and take flight
all this grief for a cheap less than 20 quids troublesome thingus!

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ArtyY

· #3 · Nov 10, 2021

Impressive perseverance, @Dewby. You must have some electrical work background to do all the diagnostics.
Congrats for finding the culprit and for sharing with us.

I'm curious: how did you determine if the plugs were sparking intermittently or full sparks?

HondaMark

· #4 · Nov 10, 2021

Thanks for the post. My 2014 has occasional starting issues when stopping for fuel. Last time I changed the battery and it was good for 2 years before returning last month. I changed the battery again and seems to be fine (for now), but will look into getting a new relay anyway. It can be embarrassing when you pull up for fuel on such a nice machine and then cant get it restarted haha.

Dewby

Discussion Starter · #5 · Nov 10, 2021

I took all ht caps off and had all the ht leads on the engine. Sometimes they would spark sometimes not. No electrical background at all. Just learned as I went on and learned a bit from my dad.

Reactions: 2

Dewby

Discussion Starter · #6 · Jan 1, 2022

This didn't stop the starting issues but was an issue in itself. I have now modified under the seat and fitted another battery to up the amps. Not had a problem since.if all works out good over the next couple months I am thinking of moding the bay so the fuse box is under the passenger seat and a bigger battery compartment.

Light Motor vehicle Electrical wiring Gas Engineering

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Bevo

· #7 · Jan 1, 2022

If you need two batteries to start the bike, there's still a problem.

Reactions: 1

Dewby

Discussion Starter · #8 · Jan 1, 2022

That's what I'm going on, the battery size hasn't got sufficient amperage for everything. Since having more amps/cca I haven't had a problem.

Reactions: 1

Ghostrider.1127

· #9 · Jan 1, 2022

Just buy a little LI IO cells 16/18 AH instead of 2 batteries

dagronslayer

· #10 · Jan 2, 2022

Ghostrider.1127 said:
Just buy a little LI IO cells 16/18 AH instead of 2 batteries

I agree, except you want an LiFePO4 battery. I had a Shorai on my last bike (CB600F) that lasted more than 10 years. It could also sit all winter without a tender and crank right up in the Spring.

Reactions: 1

Arcimboldi

· #11 · Jan 2, 2022

dagronslayer said:
I agree, except you want an LiFePO4 battery.

A bigger battery might be an answer.
but lots of CB1000R and small agriculture Honda engines, start and run with the stock battery.
The old brummy cure
"Loose Unsoldered Connections and Splices"
check ALL the leads and don't spare the contact cleaner may be frustrating, time consuming
but will allow normal operation of the bike.

A CB1000R, a truly simple, reliable machine should start and run with the stock electronics.

I had a Shorai on my last bike (CB600F) that lasted more than 10 years. It could also sit all winter without a tender and crank right up in the Spring.

A ten year's bike I had.

More than 300 000 km on the clock, never hooked to no tender,
never sat for no season, ran on a few lead batteries from last century.
Proper and timely maintenance following the service table
allowed it to run day after day with no issue whatsoever.

A modest low mileage CB1000R
should start and run on only one battery;
lead or lithium makes no difference.

Troubleshooting again leads and switches for continuity
then fixing the fault if and when found is the better option.

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Ghostrider.1127

· #12 · Jan 2, 2022

dagronslayer said:
I agree, except you want an LiFePO4 battery. I had a Shorai on my last bike (CB600F) that lasted more than 10 years. It could also sit all winter without a tender and crank right up in the Spring.

i meant cells not a batterie

COLVERT

· #13 · Jan 2, 2022

Honda, from day one, were mean with the size battery they fitted.--It had to be nigh on perfect or starting troubles would soon begin.

Most folk, like myself, got round it by trickle charging the battery when the bike was not in use.

I had my bike for over ten years, most of which were trouble free, but leaving it off the charger soon mean trouble.--The original battery, with a little help, lasted over EIGHT years.

dagronslayer

· #14 · Jan 3, 2022

Ghostrider.1127 said:
i meant cells not a batterie

Not very clear. A bunch of 18650s and a BMS? The Shorai is essentially that except packaged for consumer use, with better battery chemistry for automotive use.

Ghostrider.1127

· #15 · Jan 3, 2022

dagronslayer said:
Not very clear. A bunch of 18650s and a BMS? The Shorai is essentially that except packaged for consumer use, with better battery chemistry for automotive use.

yes could be see like that , the space it is the main issue , and a "shorai" will be too big for. ( nope not 18650)

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dagronslayer

· #16 · Jan 3, 2022

Ghostrider.1127 said:
LiNANO® 8 Ah 12V HP25C LiFePO-Starterbatterie - BAUSATZ, Lipopower, L

LiNANO 8 Ah 12V LiFepo-Starter-BatterieSL-FHWS als Bausatz, bestehend aus den neuen, noch leistungsstärkeren 25C HP-Zellen Der ideale Ersatz für 12V Bleiakkus in Motorrädern, Flugzeugen, Booten und AutosLieferumfang des Basis-Bausatzes:4 Stück 8Ah Headway-Zellen 38120HP4 Stück Zellenhalter3...

shop.lipopower.de

Interesting, I haven't seen a kit that uses Lithium Iron cells like that. Still this is not much different than the Shorai in size, cost and capacity.

LiNANO 8 Ah
Format (LxBxH) 80 x 80 x 155 mm
107,25 €

Shorai LFX09L2-BS12
A/HR (Pb Eq): 9
Case Type 2 Length 113mm x Width 58mm x Height 89mm
$114.95

Bevo

· #17 · Jan 3, 2022

dagronslayer said:
Shorai LFX09L2-BS12

I had a Shorai in my 2014. Worked fine but I did notice the engine would turn over slower in cooler weather.

dagronslayer

· #18 · Jan 3, 2022

Bevo said:
I had a Shorai in my 2014. Worked fine but I did notice the engine would turn over slower in cooler weather.

They definitely do that. Almost the opposite of Lead Acid batteries though. Rather than getting weaker if you crank them while cold, they actually warm up and perform better. Shorai recommends running the headlight for a few minutes before trying to start it in the cold.

Reactions: 1

Bevo

· #19 · Jan 3, 2022

dagronslayer said:
Shorai recommends running the headlight for a few minutes before trying to start it in the cold.

Yeah.
The OEM Li-ion in my SC77 starts the same regardless of ambient temps in Houston.

Ghostrider.1127

· #20 · Jan 4, 2022

Bevo said:
Yeah.
The OEM Li-ion in my SC77 starts the same regardless of ambient temps in Houston.

the sc77 got a LiFePO4 , pretty special and expensive unit.

Reactions: 2

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