Injectors

Grant2005

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Jun 24, 2022
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26
Location
Perth Australia
Hi, searched on here and YouTube. I've had my injectors cleaned. I've just installed everything. Bike won't run but starts every now and then for a few turn overs . Pumps been tested and it's fine. I put a new tea bag filter in it . I know diesel injectors need priming but what about dry petrol injectors?
Why is she not getting fuel ?
I'm new to efi so apologies for the qstns
 

Squibb

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Aug 10, 2014
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Location
Bedford, UK
I understand you have an early Gen1 bike from 2010, with upwards of 74k Km, that was reportedly running rough several months back.

This is a link to your previous thread ............... https://www.yamahasupertenere.com/index.php?threads/rough-performance.32198/

Presumably you had the injectors cleaned to eliminate them from the problem analysis, but what else has already been checked?

- Codes, available through the dash on a Gen1 ?
- Plugs changed ?
- Coils - condition & resistance readings ?
- TB sync ? Is the port cap good?
- Harness upgrade - check with dealer ?
- TPS checked ?
- Fuel pressure reading? BTW, they should self prime
- Battery good & all wiring checked over for damage & poor earth/neg connections ?
- Air Box - filter changed & all connections in place ? Nothing silly such as rags or rodents left in there?
- Exhaust - end can clear with no apparent blockages.

We are here for you to try to help, but to give us any chance we need some detail as the previous thread was left in the air, unresolved.
 

Grant2005

New Member
Joined
Jun 24, 2022
Messages
26
Location
Perth Australia
I understand you have an early Gen1 bike from 2010, with upwards of 74k Km, that was reportedly running rough several months back.

This is a link to your previous thread ............... https://www.yamahasupertenere.com/index.php?threads/rough-performance.32198/

Presumably you had the injectors cleaned to eliminate them from the problem analysis, but what else has already been checked?

- Codes, available through the dash on a Gen1 ?
- Plugs changed ?
- Coils - condition & resistance readings ?
- TB sync ? Is the port cap good?
- Harness upgrade - check with dealer ?
- TPS checked ?
- Fuel pressure reading? BTW, they should self prime
- Battery good & all wiring checked over for damage & poor earth/neg connections ?
- Air Box - filter changed & all connections in place ? Nothing silly such as rags or rodents left in there?
- Exhaust - end can clear with no apparent blockages.

We are here for you to try to help, but to give us any chance we need some detail as the previous thread was left in the air, unresolved.
Thanks for your reply
Back in June when I got the bike it was idling rough and had the surging . I booked it in for a look over and TB sycn. Before that I ran a few tanks of premium fuel through it as God knows how old the fuel in the tank was . It improved over time but not perfect . The TB sync made all the difference and she can beautifully for few months . One morning I started it up and it idled rough again as well as the jerky surging when cruising . I found out the fuel I was using is an interior grade so I drained and cleaned the tank , ran 2 tanks of BP premium in it and it did improve quite a bit but not 100 % . Ive read old posts on here about the ecu flash etc. Been considering that but in the meantime I wanted to eliminate all other possibilities. The day prior to pulling the injectors out it was running and staring no problem ( except the jerky throttle) .So injectors out and cleaned by a professional, pump out and tested to spec. New tea bag filter. All back on the back , checked and double checked all was back together properly. It will occasionally fire up for 2 seconds but stops. I've checked the fusesand all fine . Lifted the tank and recycled all connectors hoses etc. TB caps look fine . I can also hear the pump prime on start up and when I release the starter button.
I'll get the manual out work on getting the codes . I did notice there is an 'F' on the trip meter . Guessing this is Fault?!
I'll check the codes and once again pull the pump out to ensure it fine .
That's all I can think of for now .
Thanks again
 

Grant2005

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Joined
Jun 24, 2022
Messages
26
Location
Perth Australia
Thanks for your reply
Back in June when I got the bike it was idling rough and had the surging . I booked it in for a look over and TB sycn. Before that I ran a few tanks of premium fuel through it as God knows how old the fuel in the tank was . It improved over time but not perfect . The TB sync made all the difference and she can beautifully for few months . One morning I started it up and it idled rough again as well as the jerky surging when cruising . I found out the fuel I was using is an interior grade so I drained and cleaned the tank , ran 2 tanks of BP premium in it and it did improve quite a bit but not 100 % . Ive read old posts on here about the ecu flash etc. Been considering that but in the meantime I wanted to eliminate all other possibilities. The day prior to pulling the injectors out it was running and staring no problem ( except the jerky throttle) .So injectors out and cleaned by a professional, pump out and tested to spec. New tea bag filter. All back on the back , checked and double checked all was back together properly. It will occasionally fire up for 2 seconds but stops. I've checked the fusesand all fine . Lifted the tank and recycled all connectors hoses etc. TB caps look fine . I can also hear the pump prime on start up and when I release the starter button.
I'll get the manual out work on getting the codes . I did notice there is an 'F' on the trip meter . Guessing this is Fault?!
I'll check the codes and once again pull the pump out to ensure it fine .
That's all I can think of for now .
Thanks again
Just read the manual re the F code. Meaning reserve Fuel not fault
 

Strummer

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Sep 11, 2020
Messages
619
Location
Italy
It does come up on the screen when you " hit the reserve" if that makes any sense in English...
Basically it tells you how many miles/kilometres you have been running since.
 

Squibb

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Aug 10, 2014
Messages
1,064
Location
Bedford, UK
Here is a short video about accessing the codes..........

On the face of it this sounds like a fuel starvation issue yet you appear to have addressed the most likely culprits, so let's hope the codes give us a lead - just post what you find.

It's an early Gen1, but you don't mention the harness upgrade - has that been done?

Plugs/coils check & resistance values, both primary & secondary? Any evidence of water ingress to the coil sticks?

There were several other questions left in the air too, but let's look at the codes first.
 

Grant2005

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Joined
Jun 24, 2022
Messages
26
Location
Perth Australia
Here is a short video about accessing the codes..........

On the face of it this sounds like a fuel starvation issue yet you appear to have addressed the most likely culprits, so let's hope the codes give us a lead - just post what you find.

It's an early Gen1, but you don't mention the harness upgrade - has that been done?

Plugs/coils check & resistance values, both primary & secondary? Any evidence of water ingress to the coil sticks?

There were several other questions left in the air too, but let's look at the codes first.
It's had a full service by myself . Everything done except valves . I'm not sure about the harness . How do I tell ? The bike had no log books. Nothing was touched other than injectors out , cleaned and fuel pump scrutinized. I checked the injectors wires/ plugs visually. The problem arose from the removal and I have no idea what I've altered. I'll look at the vid you sent and dig deeper . Pump is working well . Rail and fuel line clear. It runs for 1 to 3 seconds after I turn key on/ off 3 or 4 times but not less than that so it seems some fuel is getting into the pots . What component gives the injectors power/pulse ?
Thanks
 

Grant2005

New Member
Joined
Jun 24, 2022
Messages
26
Location
Perth Australia
Here is a short video about accessing the codes..........

On the face of it this sounds like a fuel starvation issue yet you appear to have addressed the most likely culprits, so let's hope the codes give us a lead - just post what you find.

It's an early Gen1, but you don't mention the harness upgrade - has that been done?

Plugs/coils check & resistance values, both primary & secondary? Any evidence of water ingress to the coil sticks?

There were several other questions left in the air too, but let's look at the codes first.
I've read the manual yesterday and leant more about the bike in 2 hours than the 3 months owning it . Not sure how I test each injector to show it's getting power though .
 

Grant2005

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Jun 24, 2022
Messages
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Location
Perth Australia
I'll see info can get a noid light and go from there. No fault codes as far as I can see
I've read the manual yesterday and leant more about the bike in 2 hours than the 3 months owning it . Not sure how I test each injector to show it's getting power though .
 

Squibb

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Messages
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Gen1 harness change - just get your dealer to check the VIN against Yamaha's records. All warranty & recall work should be logged.

This thread addresses a CEL issue primarily, but post #15 provides a link to Yamaha fault codes....... https://www.yamahasupertenere.com/index.php?threads/engine-light-when-throttle-let-off.30398/#post-449984

You don't mention a CEL showing, but I am surprised to learn that no codes are out of sync here. Are you sure they haven't been cleared inadvertently at some stage. The system should be able to inform whether say a TPS is out of sync, or a coil/injector has failed - maybe an area to revisit & work through logically. D:50 fuel pump could be interesting.

BTW, it's amazing how many faults occur due to battery condition problems - even with the decompressor, S10s give the battery a hard time, so it is vital that all the connections & fuses are checked &, if suspicious, the battery tested for CCA capacity, in case voltage drop at start-up is creating issues.
 

lund

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Okanagan Valley, Canada.
Lifted the tank and recycled all connectors hoses etc. TB caps look fine . I can also hear the pump prime on start up and when I release the starter button.
On key on only position only, how long does the fuel pump run?
It should only run for about 5sec.
The fuel pump and fuel system check can only be done in the bike, bench testing a fuel pump means nothing other then it spins and may flow fuel.
Your fuel system requires a MIN. of 40psi, we like to see 50-60psi.
 

Grant2005

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Jun 24, 2022
Messages
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Location
Perth Australia
On key on only position only, how long does the fuel pump run?
It should only run for about 5sec.
The fuel pump and fuel system check can only be done in the bike, bench testing a fuel pump means nothing other then it spins and may flow fuel.
Your fuel system requires a MIN. of 40psi, we like to see 50-60psi.
It was tested at just under 59 psi
I might run it on the bike and see if it has good pressure
 

Grant2005

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Jun 24, 2022
Messages
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Location
Perth Australia
50psi rather
And the pump primes for about 5 seconds on turning the key
So I found some codes
D06 17
DO8 1.1
D13 15
D14 17
D15 17
D62 1
D01 14
D03 126
D05 20
How do you tell if they are current codes or history
Thanks
And the battery is new , fully charged , and the correct cca. Connections all tight
 

Squibb

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D:62 shows 1 fault code outstanding/not cleared, so what does D:61 say?

The numbers from D:50 would be interesting too.
 

Grant2005

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Location
Perth Australia
D:62 shows 1 fault code outstanding/not cleared, so what does D:61 say?

The numbers from D:50 would be interesting too.
61 and 62 have cleared.
I'm going to take the plugs out tomorrow as I can't see why this bike shouldn't run . Maybe prior to removing the injectors I may of not disconnected the fuel pump and flooded the engine /wet the plugs. Since that time I've read the manual carefully and noted the pump must be isolated. I'll see what happens
Thanks for your reply
 

Grant2005

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Location
Perth Australia
61 and 62 have cleared.
I'm going to take the plugs out tomorrow as I can't see why this bike shouldn't run . Maybe prior to removing the injectors I may of not disconnected the fuel pump and flooded the engine /wet the plugs. Since that time I've read the manual carefully and noted the pump must be isolated. I'll see what happens
Thanks for your reply
And no numbers in the 50 range
 

Squibb

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Sadly, once you clear the codes on a non-runner, you lose that part of the fault finding armoury. Best practice is only to clear codes once they have been checked & addressed. Obviously, if the bike runs, even if a tad lumpy, the logic changes, as ongoing faults will throw fresh codes.

Let's hope your problem has a simple solution - keep us posted.
 

Grant2005

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Jun 24, 2022
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Location
Perth Australia
Sadly, once you clear the codes on a non-runner, you lose that part of the fault finding armoury. Best practice is only to clear codes once they have been checked & addressed. Obviously, if the bike runs, even if a tad lumpy, the logic changes, as ongoing faults will throw fresh codes.

Let's hope your problem has a simple solution - keep us posted.
Just cleaned the plugs . Tried to start it and it's trying but runs (not well ) for a few seconds.
It's drained my soul this F thing !
I'll put it on a trailer and take it to my bike mechanic. It's way past my pay grade obviously.
Thanks for all your help guys . I give up lol
 
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