Question about 1998 Suzuki VZ 800 Marauder

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Runs on back cylinder but front cylinder pops a little when idlin

My friend has a 1998 susuki marauder, hard to start, so I put new plugs, and cleaned both carbs. and new fuel lines,it has great fire to both plugs, and now it runs on the back cylinder fine but the front cylinder pops and does not run, I took the fuel line off and very little gas came out, could it be that the fuel pump has lost some pressure, I have no tester, some one said that it my be a leak in the exhaust pipe but I don't see no smoke coming out anywhere but the end of the pipe.
Do you some advice? Thanks!!!

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This particular model uses a BS36ss carb for the # 1carb or back as you are calling it. there is an input and output as a pass through to the second carb intergrated into the fuel delivery system of the # 1 carb. the # 1 carb draws fuel from this port also. check for obstructions at this point where the 2 carbs intersect and in the transfer line to the front carb remember this is a neg. pressure regulated fuel system so any leaks at carb 2 (Front Carb) or Balance Tubes Between cylinders and it wont function . vacuum is the key

Posted on May 27, 2010

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Check fuel filter and air intake and fuel tank vents

Posted on Jul 28, 2009

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What is the spark plug gap why is 1 of my exhust pipe hot and the other is not

Your #1 cylinder ( the front cylinder) is not firing. It could be that the spark plug is fouled or improperly gapped, or the carburetor is not delivering gas to the cylinder. pull both spark plugs Clean the plugs and gap them. The gap should be about 0.035 In. (thirty five thousandths). Reconnect the wires to the spark plugs. Lay the spark plugs against the outside of the cylinders with the metal part of the spark plug body touching the cylinder (creating the ground part of the circuit). push the starter and look for spark at both spark plugs. If you have spark at both plugs, put them back in and start the bike and check the exhaust pipes to see if they are both hot. If one is still cold, the carburetor for that cylinder is not delivering gas. Could be a kinked or clogged fuel line, disconnect the fuel line from that carburetor and see if gasoline flows out. If gas flows out, the carburetor needs to be tuned or removed and cleaned.

Jul 12, 2015 | 1998 Suzuki VZ 800 Marauder

1 Answer

Spark plugs

Although the problem could indicate a (potentially) expensive electrical fault. It is worth trying the simple (and cheap) fixes first:
Have you tried swaping the Spark plugs (front to rear) If the fault moves with the plug, then A new set will get you sorted.
(Spark plugs may appear OK off the bike, but can break down when under compression)
Can't guarantee that this will work, but well worth a try.

Feb 04, 2014 | 1998 Suzuki VZ 800 Marauder

1 Answer

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It seems there is too much of fuel going into the non firing cylinder thus the blackish spark plug, recheck the float level to that carburater and also check the valve clearance.

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valve seals worn out they get hard 4 and 8 cylinder is very close must be from head gasket oil going to the cylinders do one petrol treatment for 2 times and one oil treatment flush. New oil filter and oil fit one size up more hot spark plugs check the pcv valve for mail function clean fuel tank and fuel filter new.

Sep 10, 2012 | 1997 Ford Thunderbird LX

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I had the same thing on my 97 marauder vz800 on the rear cylender it was a stuck ring put ring free in gas fixed problem

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I would be checking for air leaks, this will give you a lean mixture. In particular look for the seals for the balance tubes and each carb.

May 04, 2010 | 1998 Suzuki VZ 800 Marauder

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1999 suzuki marauder hesitating, dropping cylinders, then quits, has new gas valve, plugs and fuel pump.

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Oct 04, 2009 | 1999 Suzuki VZ 800 Marauder

2 Answers

How to replace spark plugs on 1999 suzuki marauder

you can loosen the tank at the back by undoing the two bolts that double as seat brackets, once youve done that you can lift it up enough to gain access but it will slip off backwards if you undo the gas tap and release the breather pipe under the tank aswell, the tank is held in place by two rubber bungs at the front that slip into two locating grooves on the tank,, slip off backwards and slips back on forwards,,you wil need long reach sparkplug sockets,, and when putting them back in finger tight them first to make sure youve got em in right

Aug 06, 2009 | 1998 Suzuki VZ 800 Marauder

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