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Feul coming from exhaust pipe on 01 suzuki vz800 when running

Nothing except check outside for leaks

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  • Suzuki Master
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How do you know it is fuel? Likely water as if it is fuel it would likley be backfiring and running so rich it would not be running well if at all.

Posted on Dec 11, 2014

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Posted on Jan 02, 2017

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I have a 2001 Suzuki maurader vz 800 it runs ok at idle but has little power at load


Hi, Anonymous and the usual suspects are:
1. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a load test if necessary.
2. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
3. Spark plugs in bad condition or partially fouled.
4. Spark plug cables in bad condition and leaking.
5. Spark plug gap too close or too wide.
6. Faulty ignition coil, module, and or sensor.
7. Loose, dirty, or corroded ignition module connector at crankcase.
8. Faulty CKP or CMP, MAP, ETS, ATS, TPS, O2 sensor.
9. Intake air leak.
10. Water, dirt, or rust in the fuel system, carburetor and/or filter.
11. Fuel tank vent system plugged or carburetor vent line closed off.
12. Vacuum line from intake manifold to fuel valve is broken, cracked, pinched, or missing.
13. Carburetor controls misadjusted.
14. Damaged carburetor.
15. Incorrect valve timing.
16. Weak or broken valve springs.
17. Damaged intake or exhaust valve.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
http://home.wyan.org/~jrhdlh/VZ800ChargingSystemFAQ.pdf
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1998 Suzuki VZ800 Marauder suddenly lost power while riding can anyone...
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May 31, 2016 | Suzuki Motorcycles

1 Answer

Hard start, acts flooded, turn key a couple of times to build fuel pressure then starts. Runs fine after


hi.fault codes indicate feul presure or leaks.if feul presure is ok and no vacuum leaks at vacuum pipes intake manifold or brakebooster it can be a exhaust leak if no leaks it can be a blocked cat or not enough back presure like exhaust box removed or cat insides removed .hope this helps

Jan 16, 2016 | 2002 Subaru Outback

1 Answer

Oil leak suzuki..Haven't road my 2001 vz800 much.. Turned in on today and starts to smoke out of the exhaust and oil leaking out of the exhaust pipe. Bought it recently.


You didn't say what color the smoke was, but even so I'd say that's (probably) not oil coming out - it's soot, or wet soot since the bikes been idle. Normally it gets blown out (mostly) when you ride, but when they sit the moisture in the air can turn it to gooey black gunk.
My best guess.

Mar 20, 2014 | Suzuki Motorcycles

1 Answer

I have a vz800 suzuki with cobra pipes do i need to run a hotter plug


Check with the friendly man behind the parts counter at your Suzuki dealership. Slip him a couple bucks for good advice. Make a friend get GREAT information.

Jul 21, 2013 | Motorcycles

1 Answer

2000 VZ800 marauder runs mostly on one cylinder


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.

May 01, 2013 | 2000 Suzuki VZ 800 Marauder

1 Answer

2002 Suzuki Marauder VZ800 Front cylinder does not fire till bike warms up a bit?


Definately try a spark plug first. What does the old spark plug look like? ( white, oil fouled, melted, metallic?). Usually a fuel issue will make the inoperable cylinder very hot. Might have a loose valve guide in the head, or a bent valve.

Oct 18, 2012 | 2004 Suzuki VZ 800 Marauder

1 Answer

I have a 2001 suzuki marauder 800, i have been having a backfire/ stalling problem. the baffles have been cut out of the exhaust and i heard this can mess with the pair system. i bypassed the system and...


Hi, William and the usual suspects are:
1. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a "LOAD" test "WARNING" you can have 12.5 volts or better but little or zero amps and the battery must be replaced.
2. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
3. Faulty main circuit breaker and or connections.
4. Faulty ignition coil and or connections.
5. Faulty spark plug, oil or gas fouled, wrong heat range or service type, wrong gap, loose in the cylinder head, broken electrode or insulator.
6. Faulty spark plug cables, leaking or broken, internal damage check for spark leakage in the dark.
7. Faulty ignition module, switch, CKP, MAP, CMP, sensor and or any connector in the ignition circuit could have corroded, loose, or broken pins/sockets
8. Burnt exhaust valve or air leak in the exhaust system.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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Suzuki 1997 VZ800 Service Manual
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Suzuki 2004 VL800 Owner Manual

May 01, 2017 | 2001 Suzuki VZ 800 Marauder

1 Answer

1997 Suzuki Marauder vz800 stalls


Hi, Abgurkins and the usual suspects are:
1. Idle circuit and transfer ports clogged.
2. Air fuel mixture adjustment too lean.
3. Pilot jet clogged.
4. Faulty accelerator pump.
5. Float level too low.
6. Float bowl contaminated old fuel, water, dirt, rust, etc.
7. Float bowl vent or overflow tube clogged.
8. Fuel flow to carburetor restricted.
9. Intake manifold leak.
10. The gas cap is not venting properly or fuel tank venting system blocked.
11. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
12. Needle and seat stuck closed in the float bowl.
13. Multi carburetors not in sync.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
97 Marauder VZ800 Not running right
Suzuki VZ800 engine dies when it gets warm Biker ie Forums
Suzuki 1997 VZ800 Service Manual
OEM parts for Suzuki
http://mybikemanuals.com/suzuki

Jun 30, 2017 | 1999 Suzuki VZ 800 Marauder

1 Answer

I have a vz800 suzuki with cobra pipes do i need to run baffles?


no need to run baffles since your using cobra pipes already

Mar 29, 2010 | 1998 Suzuki VZ 800 Marauder

1 Answer

2003 Suzuki vz800 Maurader suddenly went down to half power as I was ridingon the highway. It allowed me to get home at 50 mph but was unable to accelerate. Now I can start the bike with the choke out...


Please check your exhaust pipe or the silencer. It must have been chocked with carbon and you have to remove the carbon deposit to run your motorcycle.

Also clean your fuel tank as it could have dust deposits at the bottom chocking the fuel flow once it is in running condition.

Please change the spark plug as recommended after covering a distance specified.

Jul 14, 2009 | 1998 Suzuki VZ 800 Marauder

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