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Appears engine cyl is filling up with fluid and hydrolocking-bike has been sitting for 4 years without running

Have disconnected gas line and vacuum line to petroc valve but still cyl filling up with fluid and hydrolocking when trying to start

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Hi. Vern the float needles in the carbs need to be cleaned. Also take the plugs out and turn motor to drive out all the fluid. It will also need an oil change because the fuel will get past the rings and fill the sump. Good Luck.

Posted on May 04, 2015

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1 Answer

Which way to turn the reserve tank switch on


There are 3 positions (as you probably know). Reserve, on and prime. Under normal conditions with a properly working fuel tap, prime is the by-pass that allows fuel to flow through without the engine running. On and reserve will only allow fuel to pass when the engine is running (uses vacuum from the carb).
  • PRIME has the handle facing down
  • ON is when it is facing the front
  • RESERVE when it faces the rear.
Do not leave the tap in the prime position EVER as this allows the fuel to fill the carb and with the engine running or attempting to start will cause hydrolock that will bend the pistons con-rods. Only use it to fill the carb with fuel and turn it to on or reserve as soon as you can.
If the bike runs using the prime position but will not run when on or reserve, then you may have a vacuum problem or a dodgy tap......assuming you have fuel that is.
Hope that helps.

Sep 14, 2015 | kawasaki KLE 500 Motorcycles

1 Answer

Start up after sitting long time


After sitting a long time
1. drain all gas as alchol in gas absorbs water BAD!!!
2 mix new gas + oil correctly and fill tank
3 spray starting fluid in carb.
4 put full choke
5 set throttle
6 pull till engine pops
7 place choke to half choke and pull a few times to start
8 repeat steps 3 to 8 until running

Other problems are bad gas lines
problem with spark

Bottom line the engine should at least burn off the starting fluid
if it continues to stop the carb is going to be cleaned



Nov 21, 2013 | Garden

1 Answer

Oil level. Checked with engine on or off? How many quarts approx to fill it? Gas petcocks 3 settings. one is on. One is reserve. One is prim? What is prim? What is the spark plug size? 18mm? Special...


1. Oil level is checked with the engine off and the bike on its center stand so that the oil level is even across the engine.

2. Without knowing the model and year of your bike, it's not possible to suggest the oil capacity for your engine. Some engines have the maximum oil capacity molded into the engine case near the oil filler; others do not.

3. Your fuel petcock is vacuum activated. When the engine is running, a small amount of vacuum keeps the fuel flowing when the petcock is set to "On" (main tank) or "reserve" (emergency dregs of the tank). "Prim" stands for "prime," which permits fuel to flow without the presence of engine vacuum. You'd use this if you ran the bike out of gas and needed to get fuel to the carbs so that the engine could be started again. You don't want to keep your petcock set to "prime" for very long when the bike is turned off (or even when it's on) so that the carbs can't overfill. In extreme cases, you can fill your crankcase with gasoline, which can lead to hydraulic lock and the potential for serious engine damage if you try to run your bike like that (I've had that happen to me).

4. Again, without knowing the year and model of your bike, I am not able to provide any information about the spark plugs used by your bike. However, if your bike has 18mm spark plugs, you'll need an 18mm deep socket to install and remove them. I recommend using a 6-point over a 12-point socket for this purpose--and spending the extra dollar or two to get a good quality, brand name socket. I have never seen an 18mm "spark plug" socket, but if you're really concerned, you can take the little rubber insulator out of an old spark plug socket and stuff it in an 18mm deep socket. I have never bothered.

Jun 06, 2011 | kawasaki ZX 10 Motorcycles

4 Answers

Bike has been sitting without being started this winter. is it ok to start or better to have it picked up and serviced


There is no reason why it cannot be started, although you may have a bit of a difficulty doing this. As a precaution replace all the gas with fresh gas and try clear the carb/injector.

Feb 02, 2011 | 2004 Honda VT 750 Shadow Aero

2 Answers

I have a John Deere L118 Limited Edition (w/ 20 HP B&S engine), which I purchased about 8 years ago. It ran well with few problems up to late this summer. I believe the problem started when I...


The gas cap has a small hole in the middle that needs to be unplugged every year! Just take a paper clip and stick it in and move ot around. It allows the tank to breath. Let me know if this works at mmacis@msn.com.

Nov 21, 2010 | John Deere Garden

1 Answer

1985 yamaha maxim 700 wont start no fuel. however i have fuel in the lines all the way down to the tee where it seperates in to the carbs. tank appears to have some rust in it and i did replace the inline...


I had the same issue with mine, just recently purchased the bike, previous owner said it ran but has been in storage a year and a half. I filled the fuel filter and everything and it would **** down the fuel but never even attempted to fire. I came to find out that there are two lines that come off the tank, the one without the fuel filter has a vacuum on it. So what we did was pour a little fuel down that line to prime the engine because it dumps fuel straight between the carb and cylinder. Took about 3-4 attempts but it fired and ran, just had to set the idle from there. Hope that helps you.

Sep 12, 2010 | 1985 Yamaha XJ 700 X Maxim

1 Answer

The gas tank is full and thegas is not going to filter


Some older bikes (don't know what year yours is) have an engine vacuum line that allows fuel to run once the engine starts. (Starts with the fuel that was already sitting in the carb's) If you put a vacuum hand pump and start to pull vacuum, the fuel will flow...
Otherwise, something may be plugged.

Mar 27, 2010 | kawasaki Z750 Motorcycles

1 Answer

1979 GS750L Engine running out of gas. Cleaned gas


vacuum opens the fuel tank petcock. The carbs have thier own means ofmetering fuel in the yhemselves. So, I'd say the carbs need to be pulled and cleaned, all jets should be cleared of corrosion and float levels ck'd if equiped. good luck.

Jun 10, 2009 | 1981 Suzuki GS 750 L

1 Answer

Bike wont start after sitting for 6 months


Hi, first of all, open the bowl drains and drain all the old gas out of the four bowls. Tighten up the screws, find the main fuel line coming out of the fuel petcock on the gas tank. Pull this line off, and find a little funnel, or make one with a piece of paper or something. Slowly fill this line up until full, this will fill all the carbs up. Put the line back on, fire the bike up, let it run for awhile, should be ok. Your bike has a vacuum operated petcock, so it won't let gas thru unless there is vacuum to it, and it doesn't make much vacuum cranking over. I have took the vacuum line off of the petcock, and sucked on it long enough to get gas to get the bike fired up, but a vacuum pump would be better! lol

Mar 17, 2009 | 2006 Suzuki GSX 750 F (Katana)

1 Answer

At 1/4 throttle does not seem to be getting gas and has no power


Has the bike been sitting for anytime ? Is it 'old' petrol ? Petrol goes off unless a stabaliser is used, takes on a jelly appearance and a varnish smell. 1/4 throttle seetings are controlled by air/primary jets and any long lay up of the bike may cause those jets to block up. Try draining the carbs, reseal them and once you disconnect from the petrol tank fill the carbs with a quality carb cleaner and leave overnight (or longer). Drain carbs and reattach petrol line.

Dec 15, 2008 | 1989 kawasaki GTR 1000

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