Now it won't start??? - Honda RC51 Forum : RC51 Motorcycle Forums
 
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post #1 of 10 (permalink) Old 06-19-2015, 04:15 PM Thread Starter
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Now it won't start???

Well my week of enjoyment has come to an end. Rode it to work, lunch then home. Was going to start it for a ride and no start. Checked spark - strong spark coming from coil. Checked fuel - Pump priming with no hesitation and fuel at FPR when I checked to make sure no issue in filter / line. followed repair manual procedures for relay's and they are clicking as expected in directed switch positions. So I'm LOST! Any one else have this issue?

Scott
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post #2 of 10 (permalink) Old 06-19-2015, 04:45 PM
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Read the service manual troubleshooting section.

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post #3 of 10 (permalink) Old 06-19-2015, 04:50 PM
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1) Does the FPR's vacuum pipe drip any fuel?

2) Both cylinders have spark?

3) Remove the spark plugs and check them if they are soaked wet with gasoline.

4) Any fault codes when you jump wire the self diagnose connector?

5) Unplug the PC III USB, if you have one, while doing these tests

6) Check the vacuum hoses around the throttle bodies if there's a loose one


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post #4 of 10 (permalink) Old 06-19-2015, 05:03 PM Thread Starter
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Originally Posted by MakisRC51 View Post
1) Does the FPR's vacuum pipe drip any fuel?

2) Both cylinders have spark?

3) Remove the spark plugs and check them if they are soaked wet with gasoline.

4) Any fault codes when you jump wire the self diagnose connector?

5) Unplug the PC III USB, if you have one, while doing these tests

6) Check the vacuum hoses around the throttle bodies if there's a loose one
1) Does the FPR's vacuum pipe drip any fuel? Nope - replaced two day's ago and did the drip test = Negative

2) Both cylinders have spark?
Both cylinders have spark confirmed with spark jumping to ground for both cylinders

3) Remove the spark plugs and check them if they are soaked wet with gasoline.
They aren't soaked and don't have a strong aroma but look like they could use replacement

4) Any fault codes when you jump wire the self diagnose connector?
no fault codes.

5) Unplug the PC III USB, if you have one, while doing these tests
No PC

6) Check the vacuum hoses around the throttle bodies if there's a loose one
I'll check that now
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post #5 of 10 (permalink) Old 06-19-2015, 05:36 PM
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1) Give your battery a full charge before trying one more time to start the bike. Perhaps the spark on the plugs is weak.

2) Remove airbox, disconnect both ignition coils, open full throttle, use a flash light in the intakes and crank the engine. Do the injectors spray?

3) How's your valve clearances? Take a compression test with full opened throttle (or TBs removed). I know it's not something that happens over night but at this point you need to take it from scratch


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post #6 of 10 (permalink) Old 06-19-2015, 06:50 PM Thread Starter
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Quote:
Originally Posted by MakisRC51 View Post
1) Give your battery a full charge before trying one more time to start the bike. Perhaps the spark on the plugs is weak.

2) Remove airbox, disconnect both ignition coils, open full throttle, use a flash light in the intakes and crank the engine. Do the injectors spray?

3) How's your valve clearances? Take a compression test with full opened throttle (or TBs removed). I know it's not something that happens over night but at this point you need to take it from scratch
Yep - charged the battery when I went and ordered new spark plugs for it. I had the airbox off and looked to make sure butterflies opening in synch = Check. I had to tank off when I did it so I couldn't see if the injectors are spraying - but if they aren't that would make sense since I've confirmed spark and air way is unobstructed.
I'll check the valve clearance when I break it back down next week. I'm leaving for vacation tomorrow and I know I'll spend the entire time thinking about the bike ugh.

Oh and thanks for the guidance!

scott
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post #7 of 10 (permalink) Old 06-29-2015, 03:52 PM Thread Starter
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Quote:
Originally Posted by MakisRC51 View Post
1) Give your battery a full charge before trying one more time to start the bike. Perhaps the spark on the plugs is weak.

2) Remove airbox, disconnect both ignition coils, open full throttle, use a flash light in the intakes and crank the engine. Do the injectors spray?

3) How's your valve clearances? Take a compression test with full opened throttle (or TBs removed). I know it's not something that happens over night but at this point you need to take it from scratch
So I just changed the spark plugs - no change

Next I opened up the Airbox and can see the injectors AREN'T squirting fuel into the cylinders.

Battery is fully charged and I hear the fuel pump prime when I go to on position on the switch. I'll throw the old FPR on it and see what happens but in the mean time if anyone else has had this issue any guidance or what to check would be appreciated.

Scott
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post #8 of 10 (permalink) Old 06-29-2015, 04:21 PM
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Swap your highbeam relay with the bank angle sensor relay and check the injectors again.
Assuming the injectors' wiring is plugged ok and no damage on the harness has occurred at any spot


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Congratulation to MakisRC51 for winning the 2014 Bike Of The Year Contest!
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post #9 of 10 (permalink) Old 06-29-2015, 04:42 PM Thread Starter
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Swap your highbeam relay with the bank angle sensor relay and check the injectors again.
Assuming the injectors' wiring is plugged ok and no damage on the harness has occurred at any spot
So i was checking the continuity to the injectors with a noid light and they were firing! But they didn't have fuel even though the pump was priming!!!

Pulled the assembly out of the tank to see if the sock was clogged = nope but the hose from the pump to the metal line / connection to fuel supply line was OFF - WTH! So I pulled it apart - hose has a date of 9/05/2014 on it - so the last jackhole who serviced this bike didn't put the clamp back on properly!!! I'm happy it's nothing serious (Thank you God) but it just reinforces my point that not everybody should attempt mechanical evolution's. I'm a prior BMW / GM ASE Master tech and I've found a hundred hack jobs in a week so I cannot say I'm surprised but still very glad nothing serious. I'll be heading to the parts store as soon as I eat dinner.

With all that said I want to thank you guy's for helping me with your suggestions and input!!! I've found my like kind here and will return the favor at any opportunity.

Scott
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post #10 of 10 (permalink) Old 06-29-2015, 04:58 PM
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Very pleased to hear the solution was not costly.........KTRSD man


My Íhlins Project: https://www.rc51forums.com/forums/showthread.php?t=6033
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Congratulation to MakisRC51 for winning the 2014 Bike Of The Year Contest!
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