Question about 2002 Suzuki VZ 800 Marauder

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Reinstalling the pair valve on my bike and i need to know where the vacuume line reconects to ?

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Hi Rfbird, I am sorry you can't find the first and best tool you ever bought for your Suzuki but despair not for a mere $15.00 you can download another one. For more information about your issue, please visit the websites below. Good luck and have a nice day.
2002 Suzuki Motorcycle Service Repair Workshop Manuals

Posted on Oct 05, 2015

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When I attach breather pipe to the side of carb bike gets very sluggish ,and when I take it off bike runs smooth , block one end of vacuum pipe that goes into carb? Or will I cause damage to bike ?


Carb vacuum lines are easy to misconnect. You have not listed your machine, or model, so I cannot determine what the details of the challenge you face actually are.
A description of your machine would help immensely.
Often a vacuum line from an intake is used to actuate a fuel valve.

Sep 11, 2015 | Goes Motorcycles

1 Answer

Heano heat in my 94 chev cripes car


Most likely the water control valve to the heater core is not opening. You'll find that valve under hood on the firewall inline on a hose. it may be vacuum actuated or with a wire from your heat controls on the dash. Could be vacuum line off or the wire not connected. Or possibly a stuck valve. Use a pair of pliers on it gently if stuck.

Sep 23, 2014 | Cars & Trucks

1 Answer

Where the fuel hoses go


If you have a petcock below the tank with a reserve switch, you should have two lines. The smaller one is a vacuum line that goes to the carbs. The other is the fuel line. The vacuum line is important, as without it the petcock will not flow fuel. The presence of a vacuum opens a pneumatically operated valve in the petcock allowing fuel to flow. There should be a nub on the middle of one of the carbs to connect the vacuum line to. The fuel line goes to a fuel rail that feeds all the carbs.

Apr 26, 2014 | 1995 kawasaki ZX-6R Ninja

1 Answer

Fuel tank petcock vacuum operated


What exactly is the problem with the petcock? If it is a vacuum operated petcock and it is no longer allowing fuel to the engine check the following:

First, did you work on the bike prior to the problem occuring, and was the bike running properly before this? On bikes I've owned with vacuum petcocks, the petcock has two rubber hoses attached to it. One is the vacuum line the other is the fuel line. On one of my bikes these hoses were nearly identical in size and I managed to swap them a couple times after having the tank off the bike. Simply double check that the hoses are connected properly. If they are not, the bike will run until the fuel is run out of the float bowls then die.

Second, do you have an inline fuel filter on the fuel line between the petcock and carb? If so check it to make sure it is not clogged.

Third, remove the tank and check the entire length of the vacuum line for the petcock. Is it kinked, pinched, cracked, cut, detached, etc.? Look for anything which would prevent the line from providing vacuum to the petcock.

Fouth, test the petcock to see if it is working properly. To do this you will need a handheld vacuum pump, such as a Mityvac (you may be able to get a free loaner from some autoparts stores). remove the vacuum line from your petcock and attach the vacuum pump to it. It should only take one or two pumps to create enough vacuum to open the petcock valve. If fuel begins to flow the petcock is good, if it doesn't you could have a clogged filter screen in the tank, but most likely the petcock's vacuum diaphram is damaged. The Baha is a Chinese made bike and it's possible the rubber parts in the fuel system are not compatible with the ethenal fuel blends here in the U.S. The dealers who sell these bikes are really hit and miss when it comes to being able to provide replacement parts. Even with the internet, it may take some work to locate a correct replacement petcock for the bike. On the bright side, if you are able to get a new petcock, they are very easy to replace.

Good luck!

Nov 29, 2013 | 2011 Bajaj Pulsar 150

1 Answer

My gs500f is back firing through the CARB. the carbs where removed and cleaned they where in good codition.when the suzuki mechanic reassembled the bike and started it the bike dosent want to adjust down...


Lean mixtures burn very slowly, at times slowly enough to continue burning through the power and exhaust stroke, causing a backfire when the intake valve opens, and that flame gets a shot at the new mixture charge.

In normal operation, as the engine slows, the fuel delivery from the main circuit falls off, and the idle circuit is supposed to take over. If the idle circuit flows insufficiently, that becomes a transition to fuel starvation.

You can try pointing an unlit propane torch into the inlet air, and see if you can get closer to an idle while supplying a supplementary fuel source. You will need to do this in a way that gets propane to both carburetor inlets, maybe rigging a Y with vacuum hoses and electrical tape...

This started with work on the carburetors, so the fuel system would be the most suspect. That, and the fact that it will run at higher RPM would seem to rule out fuel delivery.

I was looking around at photos while developing this answer (needed to know whether this was a twin or a 4-cylinder), and one resource said the idle speed should be 1,200. I don't know if that's right, but maybe 1,000 RPM is too slow for this motor to keep it together. (I do doubt that, though.)

When I wrote that last sentence, I started to second guess myself, thinking "What if the fuel shutoff(s) is/are vacuum operated, and as the bike approaches idle there is insufficient vacuum to hold it/them open?" But the I rejected that, because there is even less vacuum at cranking speeds, yet the bike starts.

Jun 26, 2010 | 2005 Suzuki GS 500 F

1 Answer

When someone unplugged my idol air control valve my transmission started changing hard


there is supposed to be a vacuum line between the transmission and the engine that tells the gearbox about load. when its disconected the gearbox will shift hard and the engine will idle lumpy. Find the hose and reconect it and your problems will go away.

Jun 21, 2010 | 1997 Nissan.5 Altima

1 Answer

Having a problem with fuel pump/fuel line if gas is put in gas tank it will not run to bike have to put it in a smaller fuel holder and then it goes straight to bike?


I'm not quite sure I understand your English. However these bikes' fuel supply operate on vacuum and if I understand correctly you're not getting fuel to the engine. Check firstly that the vacuum pipe connected to the fuel supply valve is working correctly. 3 pipes: 1 Main fuel supply. 2 Reserve fuel supply. 3 Vacuum.
Sucking on 3 will result in fuel pouring from 1 or 2 depending on where the valve is set.(Reserve or main). If not the valve is faulty.

Jun 07, 2010 | 2000 Yamaha YZF-R6

1 Answer

I have been trying to start my kawasaki vulcan ..she try but it doesnt happen...i took out the gas line to drain but is not working ..what else i can do?


The line to drain the gas tank or carb? If you have auto shut off fuel valves(vacuum) set the fuel valve to "prime"(or check owners manual about fuel system)
Some bikes need a fully charged battery to start sometimes.
Will the bike fire on starting fluid?
Spark plugs OK?
Can you get a 1/4 " spark at the plug.
Contact me if you need more info.
Eric

Sep 23, 2009 | 1997 kawasaki VN 800 Vulcan Classic

1 Answer

Im having problems with either the choke function or the pet-**** function just need some help with determining which one.


Disconnect the fuel and vacuum lines from the pet****. With no vacuum applied, fuel should not flow. Create vacuum on vacuum line (using pump or suction) and fuel should flow. If fuel flows continually (or not at all, or from the vacuum hose) the pet**** needs replaced. Your bike's carbs probably have fuel enricheners (valves that allow additional fuel to flow through metered passages inside the carbs), not chokes in the traditional sense.

Jul 05, 2009 | Suzuki GSX-R 750 F Motorcycles

1 Answer

Throttle body reinstalled, firebird idles at 3k rpms?


You have a vacuum leak for sure. Look and listen carefully for anything left off, maybe an egr valve or pcv hose, brake booster line?

Apr 14, 2009 | 1988 Pontiac Firebird

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