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600RR7 – FI WARNING

Posted: Wed Nov 27, 2024 12:53 am
by Alyssa
Hi everyone,

I am not the best mechanic/bike mechanic by any means, however, after getting some advice, I ran into a minor problem.

Was cleaning the bike today, then turned it on to make sure it started properly etc, then removed it to flush it out.

There is a "FI" light on the dash that indicates fuel injection, it normally comes on and then goes off once the checks are complete. However, it flashed 3 times for about a second, then shortly 5 times. I thought it might be a diagnostic code so noted it down, also, I noticed that the amount of smoke coming out of the exhaust was much higher than usual, but it started to reduce automatically via the auto choke, and the engine sounded normal.

After looking in the service manual, the diagnostic code refers to the EGCV (Exhaust Gas Control Valve). This appears to be a small motor under the exhaust pipe (can see it and all connections look clean and functioning) that operates a valve in the exhaust pipe itself that limits the amount of gas that can come out at one time.

It looks like the motor/servo is broken (https://www.oyostepper.com/category-89- ... otors.html) so could be a Honda issue but the main question is do you think it would be ok to ride short distances with this/do you think it would affect the running of the bike.

It still runs the original exhaust and from what I understand when you change the exhaust on this bike you need a computer chip to replace this motor and feed information back to the ECU for it to run properly, just wondering how important it is to the running of the bike. Would this affect back pressure (again, not entirely sure) or cause other issues?

Any suggestions/comments are appreciated, ideally would like to have it working this week but not if it's a major issue.

Regards

Re: 600RR7 – FI WARNING

Posted: Wed Nov 27, 2024 1:14 am
by mrfoo
You'll almos certainly be down on power, and you definitely won't meet emissions regs, but if it's only the egcv you're probably OK. If you can, find a way of forcing it fully open.

Re: 600RR7 – FI WARNING

Posted: Wed Nov 27, 2024 1:44 pm
by OPjades
The FI light flashing a code definitely points to the EGCV motor and yeah its pretty important for back pressure management. Don’t push the engine too hard until it's fixed if you can help it. TBh I’d try and sort it sooner rather than later. Sometimes you can find replacement servos/motors cheap (maybe not OEM but close enough) or even bypass it if you're okay with tinkering. A servo eliminator would trick the ecu but yeah its usually paired with an aftermarket exhaust.