I screwed up (bike not running)

So ...I'm usually a pretty good mechanic (usually). I've torn VFRs down to the frame and put them back, etc..

But I just did a valve check / adjustment on my 2010 (a little overdue at 17.5k) and only found 2 exhaust valves (uni-cam) that were barely out (on the loose side) and one intake (shim under bucket) that was out by .01mm (loose again). Adjusted them all back into spec, if a little on the loose side of center. When all was said and done, got the bike back together and she ran with a bit of a stumble; like it was just missing on one cylinder a little bit. ...hmmmm

I figured I either pinched a vacuum line putting the manifold back on (easy enough to do with all the connectors that get stuffed in a small space) or I didn't fully seat one of the coils on the front bank (also easy to do as it is a REALLY tight fit in there and hard to get downward pressure on the coils ...and you can't see because of the plastic heat shield).

...so I tear it apart again ...all the way apart. Double and triple check everything, make damn sure the coils are seated and am meticulous about nestling all the connectors around the manifold where they don't exert pressure on anything. Get the bike all back together with the tank hooked back up.

NOW the bike won't even fire!

Looking back, I forgot to disconnect the battery the second time I pulled it apart, and am wondering if it could have messed up the ECU; though, electronically speaking, it really shouldn't make a difference.

It's like the bike wants to go, it cranks and cranks, but it just isn't getting spark. ..and I KNOW everything is hooked up correctly and securely.

Basically I'm hosed at this point, since I have no idea where to look (except I didn't check the fuses ...and to be thorough, when I get home, I should check the fuses).

...any thoughts?

D

 

Oh man Oh man If Zen could not figured out then we are in trouble. 7th Gen is new and not many peeps put in the miles like you.........I wish you the best and hope someone can help you out. BTW saw your post on ADV crossing the water that was cool.

 

The bike was new enough to still have the valve checks done under warranty, wasn't it ??

 

I've never heard of routine maintenance being covered under warranty (aside from Mercedes, BMW, and an optional package from Audi)

 

Yeah, there's no such thing as "under warranty" service ...unless something actually broke. I think the stealer valve service is estimated at around $600 locally.

I'm sure it's something stupid; just frustrated that I haven't found it yet. ...I get cranky after a few days with no riding, let alone an entire week or more (why I moved from Illinois to SoCal ...not that I couldn't ride year round in Chicago, but I sure got funny looks when it was 20 below zero)!

 

check the 50A main fuse
do you hear fuel pump start ?? i had a prob on mine some kind of short when it was new ... starter cranked but no fuel pump turned out to be 50A fuse
acura dealer had one in stock

 

dealer in NJ quoted me $350 to check valves plus $100 if any need adjustment or shims

 

That is cheap........Stealership by my house want $900.00
Twelve pack and my four weekend will get it done.

 

Yeah, for that kind of money, it'd *almost* be worth the trip from L.A. to N.J.!

 

when you check those fuses use a meter, the 50A that went on mine was not visibly blown...hope you get her back on the road soon, bummer...

 

...yeah, I'm shitty mechanic! lol

Finally was cool enough to go back in the garage last night, and it's
amazing what a cool head can do for your thought process. "...I guess I *should* flash a trouble code and let that tell me what the f*** is
wrong."!!!

"Hmm, error code 21 eh!" shuffle through the manual "...O2 sensor
error, hmm, let's see where that plugs in"

Turns out I *did* miss a connector somewhere. ...and it was half
buried up between the front cylinder head and the steering stem (where
that PITA plastic heat shield is, for those of you who've seen one in
person), but I was able to reach it by simply removing the ECU again
and fishing around with my fingers. ...the only real difficulty is
that the manual calls out colors for the connectors that don't match
what's there ...or I don't understand their abbreviations for colors
(why can't they just write out the colors?).

For instance, what color wire would you think "Bl/Bu" is; black / blue? One pair
of wire is supposed to be Bl/Bu + W ...there are no white wires on
either of the two connectors (one connector is the O2 sensor for
cylinders 1&4, the other for 2&3). ...neither of the colors mentioned
in the manual seem to match what is on the bike, so I made my best
guess according to lead length, but tonight I'll put a trace on the
wires and make damned sure they are going to the correct sensor.

So I found the connector last night, and plugged it in ...and my
battery died before the bike would fire! lol

Had to throw it on the tender overnight. This morning I went out
there and she fired right up!

...and the stumble has gone away!

Now I'm thinking I should see what's involved in a throttle body sync though; no point in getting
lazy!!! lol

Thanks for all the well-wishes!

 

Glad to know you got it fix and get her back on the road. :thumbsup: