Honda CBR 600RR Forum banner
21 - 40 of 76 Posts

·
Registered
Joined
·
382 Posts
I barely smell gas in the exhaust now. So it's possible. I tried to crank my engine a few times before pulling them and at least 2 had residue but I chalked it to oil seepage.

Do I need to pull and clean both sets or can I start with the top first and see if it gets it to start at least?
Does it sound like it is even trying to start, i.e. does it sound like you are getting any combustion at all? Mine sounded like it was just the starter cranking, no resistance at all, very strong.

I've never messed with injectors, so I don't know what to tell you there. I know you can get injector cleaner to put in your gas, but that can make the problem worse from what I understand. Supposedly the only proper way to clean them is to send them off for an ultrasonic cleaning - else buy new injectors. Also, still might be electrical on the injectors - think - not sure how to test the circuit for those.

Wibbly most likely has a better answer for you at this point. I'd wait for him.
 

·
Registered
Joined
·
42 Posts
Discussion Starter · #22 ·
Does it sound like it is even trying to start, i.e. does it sound like you are getting any combustion at all? Mine sounded like it was just the starter cranking, no resistance at all, very strong.

I've never messed with injectors, so I don't know what to tell you there. I know you can get injector cleaner to put in your gas, but that can make the problem worse from what I understand. Supposedly the only proper way to clean them is to send them off for an ultrasonic cleaning - else buy new injectors. Also, still might be electrical on the injectors - think - not sure how to test the circuit for those.

Wibbly most likely has a better answer for you at this point. I'd wait for him.
Definetly louder than when I had the plugs all out, but still mostly the sound of the starter. Not much back pressure from the exhaust, the combustion sound if at all is barely a tummy rumble. It gets slightly deeper if I WOT start.
 

·
Registered
Joined
·
382 Posts
Definetly louder than when I had the plugs all out, but still mostly the sound of the starter. Not much back pressure from the exhaust, the combustion sound if at all is barely a tummy rumble. It gets slightly deeper if I WOT start.
I believe WOT start will shut off the injectors. That technique is to try and burn up any excess gas. If inspecting your injectors is easy enough to do without risk of causing damage I say go for it. Myself I've never done it, and knowing my track record, I would somehow end up either swallowing one, or get it jammed in my ear...

Otherwise, PM wibbly, or wait and hopefully he or someone else with more experience can chime in.
 

·
Registered
Joined
·
42 Posts
Discussion Starter · #24 ·
I believe WOT start will shut off the injectors. That technique is to try and burn up any excess gas. If inspecting your injectors is easy enough to do without risk of causing damage I say go for it. Myself I've never done it, and knowing my track record, I would somehow end up either swallowing one, or get it jammed in my ear...

Otherwise, PM wibbly, or wait and hopefully he or someone else with more experience can chime in.
Yup. You were exactly right on cleaning them. Ultrasonic only, specialist prefered so they can test after, and that jimmy-wrench-short-cut fluids are garbage.

Will run an eletrical test on them in the mean time.
 

·
Registered
Joined
·
382 Posts
Battery voltage at each injector connector.

~12.8 ohms resistance at every injector
I don't know if you can pull the fuel rail or not, but I watched a video of a guy who placed paper towels under the injectors, and simply applied 9v from a 9v battery to each one to test - how he pressurized it I don't know.

Oh, and if you do happen to do this BE CAREFUL! Sparks and gasoline well, it's what makes your bike go 160mph! It should be obvious that you would be working in a dangerous situation.
 

·
BOTY 2014 Winner
Joined
·
4,999 Posts
your injectors aren't clogged to the point of non-starting.


i've never heard of this even happening. it's an easy thing to suggest, but how practical do you really think this can be. your bike was running, now it's not, somehow all your injectors are clogged to the point of not fueling. despite the fact that your fuel filter is still in place.

no way.


people love to say that this is the cause of a non start, but i've never seen it.
 

·
Registered
Joined
·
42 Posts
Discussion Starter · #30 ·
your injectors aren't clogged to the point of non-starting.


i've never heard of this even happening. it's an easy thing to suggest, but how practical do you really think this can be. your bike was running, now it's not, somehow all your injectors are clogged to the point of not fueling. despite the fact that your fuel filter is still in place.

no way.


people love to say that this is the cause of a non start, but i've never seen it.
Ya I just dont know where to go now. I don't even know what other test I can run.
 

·
Registered
Joined
·
42 Posts
Discussion Starter · #35 ·
May buy a used ecm on ebay because I don't really have access to another. I read that a partialially dying ecm could produce weak sparks and failing to start the engine. Ill double test for wetness on the plugs with compression test. Can I place something non combusting into the spark plug hole like a clean shop rag and see if it gets fuel on it?
 

·
Registered
Joined
·
382 Posts
Starter fluid won't hurt your engine
I believe you, make no mistake, but some people say it "could" because starter fluid burns really hot, and might cause damage because the engine is aluminum.

Let's say he does spray starter fluid, and gets combustion? What next, or lets say he does not get combustion? That means weak spark, bad plugs?
 

·
BOTY 2014 Winner
Joined
·
4,999 Posts
It's doing a couple of rotations on the starter fluid. It won't do a damn thing to the engine.


If it fires it may be enough to catch and go. Or maybe there's a fuel issue

If it does nothing it's spark.


Simple tests first.
 

·
Registered
Joined
·
42 Posts
Discussion Starter · #39 ·
Update #5

Starter fluid got it going a couple times. Saw some white smoke early on. I even got one crank on the throttle before it died. When I did that I heard a loud bell rattling noise. I didnt hear anything when it idled for the brief second or two. Just when I cranked the throttle as it died off. Kind of worried now. Couldnt keep it started after that. Killed the battery but it was putting a little till then. Just not starting. Recharging it now. I had a bunch of starter fluid drip down the left side onto the ground after a bit, but I may have just put too much into the air box. I noticed this slight brown solid goop on the electrical lines and vent hose at the gas tank. A little drip down onto the tranny. Pretty it's been there since I got it. Whats next gentlemen.
 
21 - 40 of 76 Posts
Top