Question about 2001 Yamaha V Star 1100 Classic

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HEAT DISCOLORATION ONLY ON FRONT EXHAUST PIPE NEAR HEADER. WHY IS THAT?

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  • Yamaha Master
  • 8,404 Answers

My experience with this is limited. The fix then was to rejet the carb and remove the blue with special stuff they happened to sell in the parts department. The trouble was, as was explained to me by the mechanic servicing my 1973 Honda 350, too much heat because of too much fuel going through the carb.

Posted on Sep 27, 2009

Testimonial: "would running to lean also cause the problem, or a bad plug. The bike was just serviced but I thought I heard some popping at idle also."

  • A Miller Sep 27, 2009

    Id go back and discuss this problem with the shop supervisor where you had service.

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2 Answers

Harley-Davidson exhaust pipes too hot(low rider 2016 s).


Hi, Lamont some brands of motorcycles will have exhaust discoloration right out of the gate when brand new due to engine design and the quality of the chrome plating. These bikes will also have chrome heat shields to prevent burns from accidental contact and hide ugly exhaust discoloration. Some manufacturers go as far as having heat shields on mufflers. If you purchased a brand new set of chrome aftermarket mufflers or a complete exhaust system only to find excessive bluing on the headers and golden and sometimes blue areas on the mufflers appear after a few hundred or so miles of riding your first impression is your exhaust is running too hot which must mean so is your engine. Wrong! exhaust discolour is caused by 3 different things.
1. Poor quality chrome plating, usually dictated by the price of the part.
2. Retarded ignition or cam timing caused by improper installation or a faulty CPS, CKP, MAF, MAP sensor.
3. Mufflers discoloration is caused by an excessively rich fuel condition.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below and for specific information or questions please feel free to contact me at xlch@mail.com. Good luck and have nice a day.
Harley Davidson Manuals Mark Workshop
http://www.stcharlesharleydavidson.com/OEMpartfinder.htm
Owner Manuals Harley Davidson USA
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Jun 21, 2016 | Motorcycles

1 Answer

The pipes on my motorcycle are becoming discolored; What causes this? How do I fix it?


Hi Brian, running on the lean side, exhaust and or intake leaks, exhaust valves not seating properly, retarded timing, and extended periods of high speed driving all contribute to exhaust pipe discoloration. This is another reason why heat shields are installed on pipes to cover normal discoloration. You might be able to slow the process down or halt it completely by increasing main jet size until you achieve a light tan color on your spark plugs. The down side of larger main jets is lower MPG. In the future if you ever install new pipes, there is a commercial product out there called Dyno Kote that can be installed on the inside of the new pipes to greatly reduce bluing. There is also a company named Hard Krome that sells a double walled exhaust system that guarantees pipes and mufflers not too blue. Finally, there is a commercial product called Blue-Job that can remove bluing if properly applied, but also removes a micro thin layer of chrome, so only use this product once a while. If you have any other questions about exhaust pipe bluing, or any other issues your Electra Glide may be having you can reach me at xlch@mail.com. For more information about your question, please visit the websites below. Good luck and have nice day.
Remove blue discoloration from motorcycle exhaust
Blue Job Chrome Polish 2011

Jul 29, 2015 | 2005 Harley Davidson FLHTC - FLHTCI...

1 Answer

How to remove starter


To remove a 2008 touring starter FIRST remove the seat disconnect and remove the battery negative cable (black) from battery negative (-) terminal, remove the starter front and rear mounting screws with captive washers, remove the Keps nut from the stud of the bracket tab and remove the exhaust support bracket, pull back the rubber boot and remove the hex nut from the battery Post, remove the battery positive and the main power cable ring terminals, remove the starter solenoid connector at the front of the starter, remove the engine oil filler cap/dipstick and cover the fill spout opening with a clean shop cloth or towel to keep out foreign objects/material, to facilitate starter removal, if necessary, remove the two worm drive clamps to release the heat shield from the rear header pipe, remove the starter from the motorcycle carefully sliding it out through the space between the rear exhaust header pipe and the side cover exercising caution to avoid losing the two ring dowels that are somewhat loosely installed in the primary chaincase (or starter) flange.



To install a 2008 touring starter FIRST verify that the two ring dowels are installed in the primary chaincase (or starter) flange, lubricate the o-ring on the starter and lubricate the bore of the primary chaincase with a light film of clean primary chaincase lubricant, carefully slide the starter in through the space between the rear exhaust header pipe and the side cover and with the starter solenoid connector at the front, move the starter into its installed position, remove the shop cloth or towel covering the oil fill spout and install the engine oil filler cap/dipstick at the top of the transmission case, install the slot of the exhaust support bracket onto the stud of the bracket tab aligning the other holes with those in the starter flange, start the Keps nut onto the stud, engage the hole in the exhaust support bracket, install the starter front mounting screw with captive washer, install the starter rear mounting screw with its captive washer and alternatively tighten the starter front and rear mounting screws to 25-27 ft-lbs (33.9-36.6 Nm), tighten the Keps nut on the stud of the bracket tab to 12-15 ft lbs(16.3-20.3 Nm), install the main power and battery positive cable ring terminals onto the battery positive post, install the hex nut and tighten it to 70-90 inlbs(7.9-10.2 Nm), pull down the rubber boot over the terminal connections, install the starter solenoid connector at the front of the starter, if removed, install the three worm drive clamps to secure the heat shield to rear header pipe, tighten the clamp screws to 20-40 inlbs(2.3-4.5 Nm), insert the bolt through the battery negative cable (black) into the threaded hole of the battery negative (-) terminal and tighten the bolt to 60-96 in-lbs (6.8-10.9 Nm) and reinstall the seat.

May 08, 2014 | 2008 Harley Davidson FLHX Street Glide

1 Answer

Harley torque specs


Tighten the top nut of the front cylinder head exhaust flange to 9-18 in-lbs (1-2 Nm), then tighten the bottom nut to 100-120 in-lbs (11.3-13.6 Nm), final tighten the top nut to 100-120 in-lbs (11.3-13.6Nm), then tighten the bottom nut of the rear cylinder head exhaust flange to 9-18 in-lbs (1-2 Nm), tighten the top nut to 100-120 in-lbs (11.3-13.6 Nm), then final tighten the bottom nut to 100-120 in-lbs (11.3-13.6Nm), tighten the transmission exhaust bracket clamp bolt to 60-96 in-lbs (6.8-10.8 Nm), tighten the two bolts with lockwashers, tighten the four TORCA clamps to 45-60 ft-lbs (61- 81 Nm) in the following order, crossover pipe to left side muffler, then rear header pipe to right side muffler, then front header pipe to rear header pipe, then rear header pipe to crossover pipe, tighten the Keps nut securing the bracket tab to the exhaust support bracket, open the worm drive clamps and install the six heat shields onto the exhaust pipes positioning each clamp so that the screw is on the outboard side in the most accessible position and then tighten them to 20-40 in-lbs (2.3-4.5 Nm).

May 04, 2014 | 2005 Harley Davidson FLHTC - FLHTCI...

1 Answer

How do you change the starter on a 2008 street glide with stock headers?


To remove a 2008 touring starter FIRST remove the seat disconnect and remove the battery negative cable (black) from battery negative (-) terminal, remove the starter front and rear mounting screws with captive washers, remove the Keps nut from the stud of the bracket tab and remove the exhaust support bracket, pull back the rubber boot and remove the hex nut from the battery Post, remove the battery positive and the main power cable ring terminals, remove the starter solenoid connector at the front of the starter, remove the engine oil filler cap/dipstick and cover the fill spout opening with a clean shop cloth or towel to keep out foreign objects/material, to facilitate starter removal, if necessary, remove the two worm drive clamps to release the heat shield from the rear header pipe, remove the starter from the motorcycle carefully sliding it out through the space between the rear exhaust header pipe and the side cover exercising caution to avoid losing the two ring dowels that are somewhat loosely installed in the primary chaincase (or starter) flange.



To install a 2008 touring starter FIRST verify that the two ring dowels are installed in the primary chaincase (or starter) flange, lubricate the o-ring on the starter and lubricate the bore of the primary chaincase with a light film of clean primary chaincase lubricant, carefully slide the starter in through the space between the rear exhaust header pipe and the side cover and with the starter solenoid connector at the front, move the starter into its installed position, remove the shop cloth or towel covering the oil fill spout and install the engine oil filler cap/dipstick at the top of the transmission case, install the slot of the exhaust support bracket onto the stud of the bracket tab aligning the other holes with those in the starter flange, start the Keps nut onto the stud, engage the hole in the exhaust support bracket, install the starter front mounting screw with captive washer, install the starter rear mounting screw with its captive washer and alternatively tighten the starter front and rear mounting screws to 25-27 ft-lbs (33.9-36.6 Nm), tighten the Keps nut on the stud of the bracket tab to 12-15 ft lbs(16.3-20.3 Nm), install the main power and battery positive cable ring terminals onto the battery positive post, install the hex nut and tighten it to 70-90 inlbs(7.9-10.2 Nm), pull down the rubber boot over the terminal connections, install the starter solenoid connector at the front of the starter, if removed, install the three worm drive clamps to secure the heat shield to rear header pipe, tighten the clamp screws to 20-40 inlbs(2.3-4.5 Nm), insert the bolt through the battery negative cable (black) into the threaded hole of the battery negative (-) terminal and tighten the bolt to 60-96 in-lbs (6.8-10.9 Nm) and reinstall the seat.

May 02, 2014 | Harley Davidson FLHX Street Glide...

2 Answers

Where is o2 sensor bank 1 sensor 1


The oxygen (O2) sensors are located in the exhaust system. There are three O2 sensors and one Catalyst Monitor, one in each of the exhaust headers near each of the front wheels and the third in the common exhaust pipe further back. A special deep socket is available from any parts store to remove the sensors. The socket has a **** down its length to accommodate the sensor wire permanently attached. Simply disconnect the bullet connector and unscrew the sensor.

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Mar 18, 2011 | 1996 Ford Explorer

1 Answer

2007 yamaha yz450f... while riding last week it was backfiring on deceleration. it blew a 5 inch hole in the header pipe. i purchased a new one, cleaned the air filter, changed the oil and put a new spark...


Exhaust leaks near the exhaust port can draw air into pipe on deceleration and detonate any unburnt fuel leaving engine, causing backfire and high temps.
An overly lean fuel mixture on the engine can make decel backfire worse too.

Mar 13, 2011 | Yamaha YZ 450 F Motorcycles

2 Answers

Exhaust pipes discolored


It may indicate that but that doesn't mean there's anything wrong with it. If the bike sat for a long time while running, the exhaust can get hot enough to discolor the pipes...but that doesn't mean there's anything wrong with the motor. Improper carburetor settings can make the bike run lean (not enough fuel) which, in turn, can cause a hotter than normal exhaust and discolor the pipes...again, this does not indicate there is anything wrong with the motor. Ask if the pipes are stock or after-market. After-market pipes are a minefield for motorcycle riders. When the manufacturer puts the stock pipes on, they are tuned to the motor to give peak performance which usually results in little to no bluing of the pipes. Aftermarkets can throw the tune off and discoloration is the result. Ask the seller if there have been any changes to the bike...such as after-market pipes, rejetting the carburetor, changing the intake, etc. Most likely the seller will say yes, there have been some changes made. Please note: THIS DOES NOT MEAN THE BIKE IS BAD OR THE ENGINE IS WRONG.

Nov 10, 2009 | 2004 KTM 625 SMC

2 Answers

Where is the O2 sensors located on a 2002 jeep liberty


in the exhaust header pipes before the catalytic converters.

Jun 16, 2009 | 2007 Jeep Liberty Sport

1 Answer

Heat questions


The shock would get just as hot without the exhaust being next to it. The amount of heat generated by the thousands of up/down cycles a shock goes through, especially at racing speeds, is higher than the heat transferred from the pipe being next to it.

Nov 10, 2008 | 2008 Yamaha MT-03

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