G'day, though I'd share a pretty funny story. Yeah, I totally noobed it but what you gonna do? Story: Bike was running hot (Zx2r) & getting hard to start warm & cold. Easy... I got this. Carbs off, stripped/cleaned/float heights ect... Pilot's were 3.25 turns out...... Sweet. Carbs back on, fuel tank back on in prime position ready to start. Get semi distracted by a phone call, then MRs's calls that dinner is ready.. I head in for dinner thinking how awesome I was for fixing the carbs. Eat dinner watching Tv. Then start watching catchup Tv. Next minute, it's 11pm & I'm exausted so I'll finish the bike off in the morning no worries. Wake up next morning & head out to start the bike thinking I'd take it for a blat on fresh rebuilt carbs. Hit the start button.. BANG engine stops dead. Like something is stuck in the piston chamber.... WTF! Hit it again, engine does not even turn over.... WHAT THE ****!!!!!!!!!!!!!!!!!! Strip carbs off, again. Check everything is in order, carbs back on & repeat. Engine starts turns over & actually starts... Sweet. Runs for about 10 seconds then BANG!!!!!!!!..... By this time I'm starting to think that I've dropped a bolt into the valve/intake manifold & a nut is rolling around the piston chamber.. Pulled everything off AGAIN (3rd or 4th time I forget)... Everything seems to be in order. Back together again & same ****.... So I start thinking electrical issues (dont ask) so I start swapping parts/fuse box/rectifier ect... Could be the starter, so pulled the starter motor out. Then..... petrol started pouring out from the starter motor hole.... Ok, so what the actual... I immediately glance over at the petrol tank that WAS full & I saw the position of the Petrol selector switch that was in Prime position. At leave 3/4 of the tank had emptied into the engine. When I took it off I thought it felt a bit light but didn't really think anything of it. Then my heart sank, grabbed a torch & checked the oil level. The oil was FULL, took the oil cap off & the crank case was FULL of petrol. To the top... A few things I've learned about having an engine full of Petrol and oil. It will act like there is a bolt in the piston chamber with a loud BANG... Not to sure why that is. Most of the time it wont even turn over at all If it does turn over it will sometimes even start but it will end in a loud BANG Anyway, two oil changes/filters later everything back together & started/ran perfect!!!!!!!!! Couldn't believe it didn't do any damage.
The fuel drops past the intake valves, fills the combustion chamber and then fails to compress with the starter. You got REAL lucky. Also, been there done that. I feel your pain. Ooof!
You also filled the crank case with petrol by leaving the selector in Prime ? Yeah, think I did get lucky. Not sure if it has done any long term damage. Guess time will tell.
If you took a pole, you'd find lots of people have done what you did. You're just brave enough to admit it!
I wouldn't say FILLED- but enough that my local oil recycler wouldn't take it when he saw/smelled/got burned by the gasoline I brought him. I hydrolocked it for certain though- pulled the plugs and shot fuel out the holes with starter cranking.
Yeah im sure there is. Im at that point in my life where i no longer give an f what ppl think Hope someone can take somthing away from my story in case they happen to do something similar
There's actually a reasonable chance you've bent a rod...Back in the day, Suzuki 500 2 stroke twins were a byword for filling up with fuel and then bending a rod when someone kicked it over. Reminds me of the customer who came in to the shop saying his FZR1000 was making odd noises. He'd been told by a mate that if he dropped the oil and filled up with kero, a short run would flush out the oiling system... Luckily the crank was saveable but it was a full set of shells - and the first time I had to align hone cam journals.
Dunno man. Took it for a blat on the freeway for about an hour. Pulls hard through thd rev range. Seems fine to me.
Yep, might be fine. I had same happen and engine was okay after. This situation can cause hydraulicing, but the fuel is normally dripping past the rings into the sump, so other than very wet combustion chambers you should be fine. I'm not an engine guy, but valves normally bend when they make contact with something they shouldn't e.g. piston, valve seat.
Or you know- liquid that acts as a solid. . I think our only saving grace must be the starter not being as comparably strong as a car one at this point. I've bent a car rod before with a starter (hence my freak-out a few weeks back when I did what the original poster did).
Yes, liquids don't compress, but with intake and exhaust valves shut you're not likely to bend them are you?
As long as you're on that portion of the stroke, sure. If you catch a opening stroke faster than you can express the water you end up in this boat tho. That rod in the back is now a very crooked tap handle these days. it was a bad day lol
