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4 Stroke Bicycle Engines & Kits 4 stroke motorized bicycle engine kits are great if you want reliability or do not want to mix your oil and gas. Learn from each other how to get the most out of your 4 stroke bicycle engine

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  #1  
Old 08-24-2009, 07:39 PM
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skyl4rk skyl4rk is offline
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Default Titan carb problems

My Titan will not idle anymore. It will run with half choke when warm, but I need to keep pumping it to keep it going.

I have removed the carb and tried to spray out the ports with carb cleaner, and took it apart as far as I could, but no satisfaction.

Anybody know which carbs would be a good replacement carb for this motor? Is there a Walbro replacement?
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  #2  
Old 08-25-2009, 02:19 PM
bandito bandito is offline
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Default Re: Titan carb problems

Im not an expert by no means but just think of gas flow when thinking of a carb. If you need half choke to keep it running all the time then your carb is needing the extra suction your choke provides to get more fuel passing through it. Some where the fuel is being restricted in its flow to the cyclinder. Check your gas cap and make sure its venting and then go down stream checking the filter and the gas line. In the carb just make sure all passages are open and the float and needle are working properly. Make sure theres no gas in the float and that the needle valve is sealing and moves freely. I always use a fine wire to go through the passage ways and use wd40 to follow up with. Spray all your carb parts with wd40 to get any gummy residue off of them and the wd will not hurt any thing. A little air shot doesnt hurt either. I dont have a compressor but I use a can of air you buy to spray the dust off of computers and key boards it works great. Carbs on this type of equipment are simple creatures and can be easily repaired just take your time and you should be able to fix it. Good luck!
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Old 08-25-2009, 06:46 PM
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spad4me spad4me is offline
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Default Re: Titan carb problems

Does your carb have two fuel lines a feed and a return?

On my gp460 running wot will blow off the crankcase pressure line.
Hella fast bike

Was a real bummer the first time.
I thought I blew the engine.

Check for free flowing fuel

I believe a titan engine has a filter in the tank?
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Last edited by spad4me; 08-25-2009 at 06:48 PM. Reason: speellling
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Old 08-25-2009, 07:55 PM
thatsdax thatsdax is offline
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Default Re: Titan carb problems

If you are having a problem with your carb. Send it to me, I will replace it under Warranty. Thanks...
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Old 08-27-2009, 09:33 AM
thatsdax thatsdax is offline
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Default Re: Titan carb problems

Before you send me your carb.. Inspect and clean the idle circuit. You need to remove the Black Plastic Idle set screw. Under that you will need to lift the black plunger out. This plunger has a super small idle jet and o ring. Inspect and clean. The O rings are subject to rot due to ethanol in the fuel. If this o ring is in bad shape, you can replace it with a slightly over sized o ring from Ace Hardware. Get the 4mm ID x 7mm OD x 1.5mm thick. Put a coating of WD40 on to the O ring which will allow you to seat it all the way back down. The O Ring is critical since it forces the Idle circuit to go through the Idle Jet or Slow Jet. With no O ring, the flow of Fuel will simply go around the Jet, by passing it and the Idle will be poor or non existent. Thanks.. Enjoy the ride..
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Old 08-27-2009, 03:05 PM
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spad4me spad4me is offline
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Default Re: Titan carb problems

Quote:
Originally Posted by thatsdax View Post
Before you send me your carb.. Inspect and clean the idle circuit. You need to remove the Black Plastic Idle set screw. Under that you will need to lift the black plunger out. This plunger has a super small idle jet and o ring. Inspect and clean. The O rings are subject to rot due to ethanol in the fuel. If this o ring is in bad shape, you can replace it with a slightly over sized o ring from Ace Hardware. Get the 4mm ID x 7mm OD x 1.5mm thick. Put a coating of WD40 on to the O ring which will allow you to seat it all the way back down. The O Ring is critical since it forces the Idle circuit to go through the Idle Jet or Slow Jet. With no O ring, the flow of Fuel will simply go around the Jet, by passing it and the Idle will be poor or non existent. Thanks.. Enjoy the ride..
That is a VERY NICE fix.
Have you ever thought of a corner here devoted to ASK DAX for questions and easy to find answers for the titan engine ?
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Old 08-29-2009, 12:51 PM
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Default Re: Titan carb problems

Thank you, that fixed the problem!
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