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1Back to top Go down   fuel injector woes Empty fuel injector woes on Thu Jun 06, 2013 12:10 pm

johnverbsky

johnverbsky
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Already possessing 4bmw's, i finally got a k100rs, at a price that would make you envious.....but it won't start, and i haven't been able to figure it ou

Ignition is fine...squirting starting fluid makes it run until it ruins out of gas...fuel pump is good, fuel pressure good

Here is what i have.....when i pull the rail and push the starter, nothing happens from the injectors until i stop the starter, then i get one squirt from each injector, which looks fine..so it must be electrical

I have no voltage going to either side of the injector until i push the starter, then i have 12 volts going to both sides, and they do not seem to be pulsing..i have 12v going to p in 9 of the edu when starter is pushed,

So is this simply grounding, our a relay....any ideas

    

2Back to top Go down   fuel injector woes Empty This is for smarter guys than I, but... on Thu Jun 06, 2013 1:36 pm

ibjman

ibjman
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Just an idea......you might just try disconnecting & reconnecting the main lead plug into the FI computer under the seat.
Probably already tried that? since I see your ref. to pin #9.
Otherwise, start from step 1 here: http://hrsbstaff.ednet.ns.ca/bvogel/K100/download/bike-wont-start1.htm
Regards, ibj....

    

3Back to top Go down   fuel injector woes Empty Re: fuel injector woes on Thu Jun 06, 2013 8:50 pm

robmack

robmack
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Sounds like the injectors need cleaning. They get gummed up over time if they sit with gas in them.


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Robert
1987 K75 @k75retro.blogspot.ca
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4Back to top Go down   fuel injector woes Empty Re: fuel injector woes on Thu Jun 06, 2013 8:55 pm

Guest

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Maybe the idle switch ?

Unplug it.

fuel injector woes Disconnecting%20idle%20switch

    

5Back to top Go down   fuel injector woes Empty Re: fuel injector woes on Thu Jun 06, 2013 9:25 pm

RicK G

RicK G
VIP
VIP
There is a Black/Yellow wire that goes from the starter relay via a 4 pin plug to pin 4 on the ECU if that wire is not connecting the problem you are having will occur. Check that wire for continuity with an ohms meter and check the 4 pin plug for corrosion, it should be from memory on the left side under the tank up near the ignition control unit it will also have a violet/green, yellow/red and a green/red wires.
It tells the ECU to start firing the ignition and FI untill the Hall sensors send a signal that the engine is running.
Make sure you have fresh fuel in the whole system we have seen here a couple of instances of fuel causing hard to start problems when it is only a few months old.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

6Back to top Go down   fuel injector woes Empty Re: fuel injector woes on Mon Jun 10, 2013 11:45 am

Williammite

Williammite
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@RicK G wrote:There is a Black/Yellow wire that goes from the starter relay via a 4 pin plug to pin 4 on the ECU if that wire is not connecting the problem you are having will occur. Check that wire for continuity with an ohms meter and check the 4 pin plug for corrosion, it should be from memory on the left side under the tank up near the ignition control unit it will also have a violet/green, yellow/red and a green/red wires.
It tells the ECU to start firing the ignition and FI untill the Hall sensors send a signal that the engine is running.
Make sure you have fresh fuel in the whole system we have seen here a couple of instances of fuel causing hard to start problems when it is only a few months old.

You had define answer in very brief manner. I got it main point that you like to highlight...But if a car engine was one or two year old then it will apply on it or not?

Used reach truck

    

7Back to top Go down   fuel injector woes Empty Re: fuel injector woes on Sun Jun 16, 2013 2:07 am

K-BIKE

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Our bikes are pushing 25 + years old and connections get bad let alone the mods done by previous owners falling apart. I think a good dose of DeoxIT on every electrical connection where there are contacts is a good starting point for reducing a lot of problems. Let us know how it goes with the four wires to the ECU.
Regards,
K-BIKE

    

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