Question about 2003 Harley Davidson FLSTCI Heritage Classic

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Carb Im almost done freshening up myharley and getting it on the road. Today while installing a new petcock and fuel line/filter, I noticed the carb holders(the rubber boot things) look a bit old and dried out. They have some hairline cracks running through them, the left one isnt bad but the right hand side is worse. I dont think the cracks are deep enough to go all the way through or affect the bike's running condition. So I just figure ill replace them anyway, but much to my dismay a pair of new ones costs about $40-50. And im already broke from throwing a bunch of other new parts on the bike. Plus replacing them involves removing the carbs, disconnecting the throttle cable, etc. But I would hate to just leave them on like that. So heres my ghetto repair idea...I have a tube of black RTV silicone sealant that I have used to patch worn electrical components with good results. It says its good to around 450 degrees. Think I could give the carb holders a coating of the sealant as a temp fix until I someday get the time/money/patience to replace them?

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NO NO NO that will not work. You need to buy the rubber seals, where are you going 50 bucsk is BS they are less then 10 bucks a set. the old ones will leak and your bike will run like ****. Always change them when you tke off the manifold. ALWAYS!

Posted on Sep 05, 2009

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Try your maguiver method. If BuzZZ sais it worked for his buddy, Id tend to believe him. Save up and change them out when you get the cash though. itd be a shame if they let go when you were in the middle of a cummute or ride somewhere.

Posted on Nov 20, 2008

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What should I check next? Not getting any error codes, replaced the CKP, MAP, IAC, TP, & ET Sensors. Not sure what I should try next, any suggestions would be appreciated.


Hi Bruce, might have gotten some bad gas. Drain the tank, clean the fuel filter, check the bottom of tank for rust, dirt, water ect. Then ckeck fuel pump pressure, refill tank with a gallon of fresh gas from a different source and take it for a ride. good luck

Mar 28, 2015 | 2006 Harley Davidson FLHRS Road King...

1 Answer

I have a 1991 suzuki bandit 400cc, i cant get fuel down to the carbs, i have had the tank cleaned, installed a new petcock and had the carbs cleaned, also put all new fuel lines on it, still n fuel, im...


Have you pulled the line from the petcock and checked for fuel when you turn it to on or reserve?
If you have fuel flow then maybe the floats are stuck blocking the fuel from filling the bowls. Tap on the float bowls with the handle of a screwdriver. Also if your carbs have a drain screw on the bowls open them and see if fuel starts to flow.
I don't recall if your bike has one, but I have seen few carbed bikes with electric fuel pumps as well. If yours has one then that is for sure something to check into.

Aug 24, 2011 | 1994 Suzuki GSF 400 Bandit

2 Answers

I have a 2003 road king std, stopped running today! It has spark, when I dump gas in the carb it fires right up. Seems like a feul problem, any suggestions? Thanks for your help! JW


Check your fuel petcock. In 1996, Harley went to a vacuum operated fuel petcock and these things give lots of problems. It has a diaphragm in the backside of it that is pulled open by vacuum. If the diaphragm gets a hole in it, no fuel to the carb even if the tank is completely full. You can drain the tank and take the petcock out. Remove the square plate on the backside and carefully note how the parts come out. Hold the diaphragm up to the light and gently stretch it looking for a hole. If you find one, replace the diaphragm. Better yet, I'd replace the vacuum operated petcock with a high quality manual fuel valve, old school style. Problem solved permanently. Make sure you plug the vacuum hose.

Good Luck
Steve

Jun 02, 2011 | 2003 Harley Davidson FLHRCI Road King...

1 Answer

Change the fuel filter


by changing the fuel filter i assume your bike is older or custom and has a carb. so heres the steps:

1. drain the fuel from your tank.
2. Disconect the fuel line from the petcock.
3. Disconrct the vacuumline from the petcock.
4. unscrew the nut that connect the petcock to the tank.
5. remove the petcock, and the fuel filter is connectet by an O ring, make sure it is in tackt and good to reuse.
6. look at the fuel filter in the light, you should be ablr to see thru it without debree.
7. once you do replace or clean it, install it back on the petcockand puch the filter back in untill it is firmly in place.
8. use thread sealer on the big skrew and carefully screw it back in, it should only take a few turns. then tighten it firmly, maybe 5 ft lbs or so. not that much. and make sure you dont crossthread it.
9. replace the fuel line and the vacuum line.
10. put gas in and turn the bike over a couple times before you start it to alow fuel into the carb.
11. Ride like a bat out of hell.

The petck is where you turn the fuel on and off, im not trying to put down your inteligence, i dont know how much you know mechanicaly.

If you need more.

Skrewloosewerks@yahoo.com

Apr 27, 2011 | Harley Davidson FLHTC - FLHTCI Electra...

1 Answer

I recently rebuilt the fuel petcock on an 03 GSXR 600 and dont seem to be getting fuel to the carbs. I may have installed the petcock wrong. Can someone let me know how the petcock is installed in the...


So long as gravity is in play with the fuel petcock it will work in any way.
Does fuel go through the line before the carbs?
If so then the floats or the float pin has a problem.
Check by removing the float bowl cover and check the bowl floats for movement.
A in line filter will help stop future problems,If you need to clean the needle jet try a guitar string or a piece of un-wound copper wire to clean it up.

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1 Answer

I have fuel in crank case in 1996 road king .took off cam cap and oil and gas came out. gasket was leaking. also gas and oil coming out of carbruator.


Usually when you find gasoline in your crankcase it's because your carburator is leaking fuel into the cylinder heads. From there it goes into the cylinders on top of the pistons. Down past the rings into the crankcase. If enough gasoline goes in there, it will go past the sprocket shaft seal and into the primary case as well.

This is normally caused by a bit of trash getting under the float valve in the carburator. But, on a 1996 model, there is supposed to be a vacuum operated petcock. The petcock is supposed to close whenever there is no vacuum on it that is supplied from the intake manifold. Either the petcock has been changed, which is not unusual since the petcocks were quite troublesome, or it is not working properly.

First, you need to clean out the carb. and get any trash out from under the float valve. Remove the carb from the engine. Take the float bowl off the bottom of the carb. Pull the pin out that holds the floats and remove them and the float needle valve. Blow compressed air through the fuel inlet fitting to clean any trash out of the fuel valve seat. Inspect the needle valve for damage, replace if necessary. Reassemble and reinstall the carburator. Check for proper operation prior to starting the engine.

With the carb cleaned, you can install either an aftermarket manual petcock (Pingel) or a Harley petcock for a 1994 or prior model. These are manual petcocks. When you're not riding your bike, turn the petcock to the "OFF" position. Also, install a fuel filter in your fuel line between the tank and the carb. Get one of the good ones with the scintered metal filters in it.

Change your oil and filter. Check your primary oil as well. Change it if contaminated with gasoline. Before you reinstall your air filter, connect the fuel line to the carb and turn the gas on. Closely watch the inside of the carb throat to see if fuel starts to "bubble up" into the throat of the carb. This usually takes a few minutes so be patient. If it does, you need to replace the float valve needle with a new one and check the float setting. If it doesn't "bubble up" you're good to go. Then, don't forget to turn your petcock to the "OFF" position when you quit riding the bike.

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1 Answer

I need to know where all the hook ups go coming from the shut off valve of the gas tank on my 1985 yamaha maxim x 700


There are two lines coming out of the fuel petcock (shut-off valve). The small diameter one is a vacum line that connects to the top of the rubber intake located between the carb and the engine head. you should notice that all four intakes have a vacum port in this location and they should all be capped excet one - usually #2.

The second line of the fuel petcock is the larger diameter one, and is the fuel line. Make sure you install an in-line filter if it has been lost. The fuel line connects to the carb on a pipe that feeds all four carbs. The pipe is located on the lower portion of the carb, down by the float bowls. There will be a connection port between #2 and #3 (right in the middle of the carb assembly). It will be difficult to see when everything is assembled and even more dificult to reach.

Jul 17, 2009 | 1985 Yamaha XJ 700 X Maxim

1 Answer

Fuel leak where fuel tube goes into carb.


Turn the petcock valve off and the flow should stop. If the fuel line is long enough, cut the broken line just above the break then re-attach to the nipple.

May 21, 2009 | 1977 Suzuki GS 750

1 Answer

Dirty carburator


dear rockyacers your carb does not have a internal filter the filter would be a in line filter installed in your fuel line. the other filter is a screen in the fuel tank and a sediment bowl located at the petcock. to service tank sreen you must remove petcock from tank simply unsrew petcock remove from tank and clean with comp air and carb cleaner. hope this helpful jim

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1 Answer

Yamaha yzf600 wont start


Hi, John and the usual suspects are:
1. Damaged or restricted fuel tank venting system.
2. Loose float bowl screws.
3. Damaged float bowl o-ring.
4. improper fuel level in the float bowl.
5. Worn or dirty inlet valve or seat.
6. Damaged or leaking float assembly.
7. Particle contamination in inlet fitting cavity.
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.
YZF600R Forums View topic Carbs overflowing
Carbs leaking Here is how to fix it
Yamaha YZF600 YZF600R 1994 2007 Service Repair Manual PDF Download Manuals...
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Yamaha YZF600RP Owner Manual

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