Question about 1999 Triumph Trophy 900

Open Question

Fuel flooding carbs and draining into crankcase

Posted by Anonymous on

2 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

  • 47 Answers

SOURCE: fuel flooding carbs and draining into crankcase

Carb floats need cleaning possibly renewing.

Posted on Mar 17, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

CARBURETOR LEAKING OIL AND SMOKING


IT is likely that the carb is leaking fuel and filling the crankcase with fuel. Causing excessive crankcase pressure forcing oil into airbox through the crankcase vent. Check your crankcase for fuel and/ or being overfilled. If fuel is present fix the carb first, then drain and refill crankcase. After all is fixed run the unit outside for a few minutes and let it burn off excess smoke.

Sep 02, 2014 | Cub Cadet 46" Lawnmower Deck Drive Belt...

1 Answer

The oil drained from 16.5 craftsman tractor with a kohler engine was about 1/2 gal and smelled of gas the person I got from said unit wouldn't start any ideas?


If the machine's fuel tank is located ABOVE the level of the engine's carburettor then it is most likely a "Gravity Feed" fuel supply system .. i.e. no fuel pump reqd.
If that's the case then the carb has 'flooded' at some stage (most likely when engine was not running), and the fuel has simply flowed down thru the carb and into the intake tract, and then down into the sump via the crankcase breather tube. This is extremely common on "low end" brands which, for reasons of economy, are not equipped with low-mounted fuel tanks and fuel pumps.
The reason that the carb has flooded is usually caused by a leaking Needle & Seat (aka Float Valve) in the carb, which could simply be caused by a bit of debris stopping the inlet needle from seating, OR, the Inlet needle may need replacing.

The reason why the engine wouldn't start is simply that it was flooded ... just like cars used to do back before EFI. Drain the crankcase and re-fill with oil, remove the spark plug and let engine dry out overnight, fit a new dry plug, put throttle lever at about 1/4 open, and crank the engine (OUTDOORS!) till it starts. May take a while to fire up, and may be a bit smoky for a while, but it should go.
My advice ... NEVER buy a lawn tractor with a gravity feed fuel system. There should be laws against them.

Nov 04, 2013 | Briggs & Stratton Garden

1 Answer

Craftsman 16.5 hp kohler gas in oil


If the machine's fuel tank is located ABOVE the level of the engine's carburettor then it is most likely a "Gravity Feed" fuel supply system .. i.e. no fuel pump reqd.
If that's the case then the carb has 'flooded' at some stage (most likely when engine was not running), and the fuel has simply flowed down thru the carb and into the intake tract, and then down into the sump via the crankcase breather tube. This is extremely common on "low end" brands which, for reasons of economy, are not equipped with low-mounted fuel tanks and fuel pumps.
The reason that the carb has flooded is usually caused by a leaking Needle & Seat (aka Float Valve) in the carb, which could simply be caused by a bit of debris stopping the inlet needle from seating, OR, the Inlet needle may need replacing.

The reason why the engine wouldn't start is simply that it was flooded ... just like cars used to do back before EFI. Drain the crankcase and re-fill with oil, remove the spark plug and let engine dry out overnight, fit a new dry plug, put throttle lever at about 1/4 open, and crank the engine (OUTDOORS!) till it starts. May take a while to fire up, and may be a bit smoky for a while, but it should go.
My advice ... NEVER even approach a lawn tractor with a gravity feed fuel system. There should be laws against them.

Nov 04, 2013 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

1 Answer

Whenever I shut off the motor, I need to shut off the fuel or the lawnmower floods and it takes hours to dry everything and put the machine back together. It doesn't matter if I need to shut down the...


Your problem is located in the carb. Inside the carb. is a float that operates the needle valve that regulates fuel flow from the gas tank into the carb. bowl. As level rises the float rises and closes the needle valve stopping flow. If the float does not rise or the needle does not seat properly to close the valve then fuel continues to drain from the tank into the carb and then into the crankcase and/or the air filter. Do not run your engine without making sure that there is no fuel in the crankcase. What you are going to have to do to fix the problem is: 1. Clean the carb.; 2. Change the oil, remove spark plug and turn engine over a few times to get oil back to where it should be because the fuel acts like a thinner in the crankcase removing lubricant from vital components.; 3. If air filter got fuel on it, it should be replaced also.

Note: If there is fuel mixed with the oil when you go to drain it, it is going to gush out at you so be prepared.

If really helpful, please rate.

Jul 13, 2011 | Garden

1 Answer

Fuel flooding carbs and draining into crankcase


Carb floats need cleaning possibly renewing.

Mar 17, 2010 | 1999 Triumph Trophy 900

3 Answers

Gas coming out of the tailpipe when i try to start my motorcycle


Is your choke stuck open? And maybe the slides in the carb are stuck in the up position.

Sep 29, 2009 | 1995 kawasaki VN 800 A Vulcan

2 Answers

Air box and crank case fuel flooding problem happened before, thinking it was stuck or worn float needles; I installed 2 Carb float needles left side facing rear of carbs , all larger main jets, all...


Well there only one way the fuel can get into the crankcase and that's from the fuel tank. The petcock must be draining and the float needles are not stopping the fuel flow. Do you have a prime position on the petcock? If so do not run the bike in the position. Try topping the tank off with gas and letting it sit for a while and see is the gas has gone down and then check the crankcase and see if there's fuel in it again. i still say its got to be your petcock.

Sep 29, 2009 | 2005 kawasaki ZRX 1200 R

2 Answers

Fuel in crank case


Sounds like one of the needle and seat assemblies in the carbs is stuck open and is flooding the cylinder which then floods the crankcase...
ALWAYS turn the fuel tap off when engine is not running.
Take it to a bike shop, they should be able to fix it a short time.

Jul 26, 2009 | 2000 Suzuki GSF 1200 Bandit N

1 Answer

Fuel in crankcase


hello
if im showing the right diagram. the carb on your bike as an oring that seals off the float valve seat. i would pull it out and inspect it. another little trick is to hook up fuel to the carb with the float bowl off and push up on the float and ensure that it is sealing. cause this very much does sound like fuel is bypassing the float valve assembly. really that is the only way you are getting fuel into the crankcase. and also is consistent with it running so rich. hope this helps. thank you.

Mar 22, 2009 | 2000 Yamaha DT 125 R

Not finding what you are looking for?
1999 Triumph Trophy 900 Logo

Related Topics:

74 people viewed this question

Ask a Question

Usually answered in minutes!

Top Triumph Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4514 Answers

yadayada
yadayada

Level 3 Expert

75797 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22114 Answers

Are you a Triumph Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...