HELP!!! Street Bob running like CRAP
Thread Starter
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Tourer
Joined: Dec 2007
Posts: 454
Likes: 0
From: Eastern North Carolina
It would definitely coat the 02 sensors if you ran premix in your bike. No harm would be done to the injectors. The only thing that makes me wonder is why hasnt the ECU picked up on the bad 02 sensors? I have in rare cases while working in the automotive field have had poor performance resulting from aged 02 sensors, that didnt trip a fault code.
Do these bikes have any filter anywhere in the system/ tank? Did the cans have any dirt in them? If the old fuel had water in it, even though you have added a new tank of fuel in your bike you may still have a gulp of water floating around in there.
I would say use a fuel treatment in your tank that someone here approves of. If that doesnt work then I would probably look into cleaning the fuel system by dissassembly. Then replace 02 sensors if all that fails.
Has anybody used fuel treatment here? Any areas that get clogged in the fuel system commonly with dirt?
Do these bikes have any filter anywhere in the system/ tank? Did the cans have any dirt in them? If the old fuel had water in it, even though you have added a new tank of fuel in your bike you may still have a gulp of water floating around in there.
I would say use a fuel treatment in your tank that someone here approves of. If that doesnt work then I would probably look into cleaning the fuel system by dissassembly. Then replace 02 sensors if all that fails.
Has anybody used fuel treatment here? Any areas that get clogged in the fuel system commonly with dirt?
You sheared off the bolt retaining your baffle? Has that been replaced now? Depending on what pipes you have that baffle can slip backwards a little when you accelerate at low speed causing some lack of back pressure, but hit the limit of its movement at higher speed and be o.k. It shouldn't cause you this much prob unless you pulled that baffle & left the other one in.
If that nasty fuel had any water in it, your probs might last for a couple of tanks. The black smoke indicates you are burning oil. I think the two cycle gas theory is a good one.
If that nasty fuel had any water in it, your probs might last for a couple of tanks. The black smoke indicates you are burning oil. I think the two cycle gas theory is a good one.
Outstanding HDF Member
Joined: Sep 2007
Posts: 3,352
Likes: 4
From: Augusta, GA
The black smoke coming out of your air cleaner is fuel from the combustion chamber, not oil.
Check the plugs, gap @ .040.
With the engine running, spray some carb cleaner at the manifold gaskets to check for intake leak.
If that doesn't reveal the problem I would check inside the tank. An '07 with only 3500 miles is an excellent candidate for rust in the tank. With a light in the fill hole, shake the bike a bit to see if you can see any particles sloshing in the bottom. The fuel gauge sending unit is prone to massive rust deterioration and can ruin the fuel pickup and the filter.
Check the plugs, gap @ .040.
With the engine running, spray some carb cleaner at the manifold gaskets to check for intake leak.
If that doesn't reveal the problem I would check inside the tank. An '07 with only 3500 miles is an excellent candidate for rust in the tank. With a light in the fill hole, shake the bike a bit to see if you can see any particles sloshing in the bottom. The fuel gauge sending unit is prone to massive rust deterioration and can ruin the fuel pickup and the filter.
Club Member
Joined: Feb 2008
Posts: 11,483
Likes: 39
From: Passaic County, NJ
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Thread Starter
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Tourer
Joined: Dec 2007
Posts: 454
Likes: 0
From: Eastern North Carolina
Unfortunately the answer is no...been too busy. I did run the scenario past my local HD mechanic however. He suggested that I run the tank completely dry and then replace with quality fuel. Any thoughts about that? I plan on linking up with the owner of a former indy shop who has agreed to help me solve the mystery. Thanks for all the great advice. I will most certainly provide an update.
