one piston not firing?

so i just go a 86 vfr 700 interceptor got it running really good and today i decided to wash it so i can go for a ride tommorrow. before i washed the bike it ran great sprayed a little water on t and now 1 cyclinder is flood and it wont run for anything. it has good spark. can anyone help

 

Pull off the spark plug boots, and use compressed air or paper towels to clean out the water from the spark plug wells, and the inside of the boots.

If that doesn't take care of it, the spark plug(s) might be fuel fouled. You might get away with cleaning them, but they may need replacing.

It is worth checking whatever allowed the water to get in there to begin with, as there is usually rubber grommets of some kind that are supposed to prevent this sort of thing from occurring.

 

thanks I'll try that

 

How does that effect engine so much

 

the only thing i can think of offhand is there is water in the spark plug tube causing the spark to short to the block. also check around the coil make sure the tower or body has no cracked causing a voltage lose. i dont know how you are checking spark but its best to use an adjustable gap spark tester so you can create a load on the coil to ensure you have enough voltage to fire the plug under compression

 

My guess is that you wet bridged the gap on the spark plug. Which also makes me thing your Spark Plug crush washer isn't sealing right.

I wouldn't ever douse a bike to clean it, rain is one thing, but a jet stream can direct water into places it wasn't meant to be able to get into (like the plug wells).

 

I am new to bikes. I checked spark like i would on a car grounded it. should i not have done that?

 

i didn't spray it with the hose hard just a gentle mist to get some lose dirt off

 

Oh sorry, I misunderstood your original post.

If you don't see any spark, I'd try a new plug first then start seeing if the wire/electronics are bad.

 

what if the spark is there

 

Your bike will probably be better after the wetness evaporates.

The standard first response to one cylinder not firing is to change the sparkplug on the bad cylinder, either with a new plug or one switched from another cylinder.

You need also to inspect plug wires and test them and coils with an ohmmeter.

 

sounds like a liberial plug as soon as something goes wrong it does not work.....and blame it on others. :closed_2: ..hold bike upside down for 5 minutes your problems will be solved...serioulsy did you get water in air box?? yep that could f it up ask sloavfr he knows all.........:usa2:

 

thats one way to check it, it doesnt hurt anything. like i said earlier it just wont really show a weak coil because it doesnt put enough load on the coil.
when the plug is under compression it takes alot more voltage to jump the gap than just sitting against the cyl. head. but as everyone else said its probably a wet or bad plug.