General Performance Question...Feedback Please

A

awssome05

Member
Just a quick rundown first then the problem.

I have a 2005 Mastiff with the super e carb. I run only 93 or better gas and used a little bit of Sta Bil in the gas for winter. I run it weekly and it idles perfectly. However It has been fairly warm the last two weeks and I took the bike out. 1st time out the bike rode fine for a bit then started hesitating like it was gasping for gas or didnt like the fuel and then the bike shut off. I coasted to the side of the road and sat for a bit and it started right back up and I got home. Second time out i rode it for at least 45 min then it did the same thing again. I sat for a few then It started up and I got home again. Im getting scared to take it out. Is it having problems with the gas and stabil mixture. Any other things I should consider checking.

Thanks
 
Nukeranger

Nukeranger

Nukeranger
If your bike ran great before, try some fresh gas with SeaFoam in it.

When I have run into this before, I found putting new jets in solved my problem if fresh gas didn't. Corrosion in the Jets can can cause what you have experienced.

Just don't try to do too many things at once to solve the problem if your bike ran great before. Being a 2005, the carb may need cleaning.

Just my 2 cents.
 
Th3InfamousI

Th3InfamousI

Administrator
Staff member
Could also be a gas cap vent problem. Theres a checkball on the underside of the gascap that has been known to cause some issues. Do a search most guys just take it out and throw it away.

I would also drain the tank and put in fresh gas and pull the petcock and see if you have any shit floating around in the tank
 
W

woodbutcher

Mr. Old Fart member #145
Staff member
awssome05 said:
How do I search. Im not real familiar with how to navigate the site yet. Thanks
Click to expand...
general search is up on the tool bar, third from the right. more specialized search, go to the tool bar to forums, second from the left and find the headline that suits your needs and go there, then do the search in the tool bar at the top for a tighter search. just play with it and you'll get the hang of it. :2thumbs:
 
Diesel Dan

Diesel Dan

Well-Known Member
I would add fresh gas,or just drain the tank,and add fresh gas all the way to full....:flag:The Ethanol in todays gasoline is very corrosive to fuel systems,and eats shit up faster than ever before....:confused:Last time I seen a gas cap vent plugged up so much it couldnt vent the pressure out,it actually ballon"ed up the tank........HOW MUCH StaBil are you adding to the tank....:confused:There is a formula on the side on the bottle that gives you correct mixing ratio"s......:2thumbs: Good luck Bro.........
 
mjsk9

mjsk9

Well-Known Member
For what it is worth, I was using Sta-Bil with no apparent issues, until my mechanic recomended against it and suggested draining the carburerater instead.
 
V

V

Guru
Your bike being a 05 has the dual fuel fill caps. The right hand side cap had the check valve in it. Plastic with a hex shape for the wrench to take it out and throw it away. Easy to do, will take longer to get the correct wrench than to take it out.

And hate to ask this but it has happened before. You are filling both tanks correct?
 
liferider

liferider

Looking forward to retirement
Instead of stabil go look at J&P Cycle search for Star Tron ethanol treatment. It works different. It not only keeps you fuel fresh it disposes of the ethanol with enzymes! Plus buy a bucket of Rocket fuel octaine boost. 99% of the time my bikes are running on 100 octaine AV gas LEADED! I take a couple 5 gal fuel cans to the local small airport and buy Aviation fuel. The 107 S&S loves this stuff! But when I need fuel on the road I reach into my T-bag and get my Star Tron ethanol enzine eater out and put a few ounces in and 1 backer of Rocket fuel then fuel up with super unleaded. I went through exactly what you are doing . Engine sputtering then dies. 5 min later firing back up. Ethanol does BAD things to engines. If you think I am wrong go ask any Lawn mower mechanic or chainsaw mechanic! Ethanol reeks havoc on there equipment!
 
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jjarkys

jjarkys

Active Member
My 05 pit does the exact same thing. I noticed if tanks are full it won't do it but once they get down to 1/3 or less it will die like it ran out of gas. Sit for 5 minutes or so then it's ok for awhile and then dies again. Fill it up and it stops until it gets low again. I plan to remove my vent this weekend and see if that fixes it.
 
A

awssome05

Member
Jjarkys. That seems to be about the same time mine does it now that u mention it.. Can any on post a pic on the bottom of ur gas caps with the check ball removed as stated above. I think mine are already gone as im not seeing anything like that on my gas caps. Thanks
 
jjarkys

jjarkys

Active Member
Check this thread out.

http://www.bigdogbiker.com/forums/showthread.php?t=37302

I posted awhile back on this and got the same answer. Honestly I've just been keeping it full to eliminate the problem but since summer is upon us I really need to get it figured out. I just know when it does it I need to fill up. Took me awhile to recognize that though. I'm gonna remove my vent and see if that fixes it. Let me know what you find.
 
jjarkys

jjarkys

Active Member
Ok. Took mine out. I believe this is what they are referring to?

Let me know if yours are gone. If so, then this isn't the problem. At least in your situation.

Also, I noticed another metal vent tube on the right tank under the gauge bezel when I had it off replacing my tach ring. It had a small rubber bulb on it. Wonder I that could be the culprit?

 
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A

awssome05

Member
Jjarkys. Thanks for the pic. Mine have apparently already been removed. So I would say thats not the problem. I just totally emptied my tank and carb bowl and getting ready to pull the petcock valve make sure its free of gunk. Then im gonna try the new gas and seafoam cleaner see if that fixes it. If not then ill have the carb and jets cleaned. Ater that im stumped...lol
 
S

Sven

Well-Known Member
Here is how you guess at fuel or spark.

FUEL:
1. If it is fuel related and runs again after it stops? > Venting.
a. Gas cap clogged is start from the top.
b. Petcock clogged is open both reserve and the on position and not flow with gas cap on and gas cap off. You must have the bike's tank filled to the brim so the vapor lock happens fast.
c. Fuel line is kinked; collapsed inside is a thinner flow; is clogged with debris.
d. Float level is the last flow area. That means the cap, the pet, the line, and now the float bowl drain screw is how you can tell if the float is going to keep flowing once it is at the proper level, is stuck and flows very little. Again, refill the tank to the brim so flow is stopped as soon as possible.

SPARK:

2. How does my bike stop? Abrupt? Or dies it chug along and then does. Or does it do it so subtle you can't tell? Oh baby you can tell if it's computer or spark related. It signs off fast and abrupt. Can you tell if it does or not? That's the trick.
a. I am going to use a timing light, hook it up to the spark plug wire and all that attached to my handle bar looking straight at me is the roll of tape used.
b. I am going to go out and ride and if the light turns off fandango, I think I found either/or?

Don't chewishe was here to help? You know, the corduroy pants really smoking the felt off is a no show.
 
S

Sven

Well-Known Member
jjarkys said:
Tank liner had also been discussed before but I think that would be a intermittent problem. Keep me posted. Check this too.

2003 Bulldog shutting down
2003 Bulldog shutting down - BIG DOG Motorcycles Forum
Click to expand...
So, since day one, the bike comes with a cam sensor is the ignition to every last one of these puppies, right?


Sensor in Question:

3. Like the timing light, I'm going to take a spool of wire and run my ohm meter up to my handlebars.
a. I am going to go to an airport hanger, go ask a mechanic for an inch of safety wire or say two inches is to backprobe the cam sensor.
b. I am soldering the safety wire to the ends of my wires [off the spool] and probe thru the back of the 'weatherpac' rubber and hit the male/female's prong bodies of both sides of the sensor.
c. I am going to set the ohm meter to DC volts so I can watch the output being sent to the black box. When I see the (cough) good known number flowing at this warm up to running temp to setting a few miles on the rpm and hammer some heat to it, make it work, watch my voltage drop and Shading!

Cam sensor cools off, returns to a voltage input number the black box recognizes: this is the balanced number needed or how do you like my new boat anchor?
 
A

awssome05

Member
Tank Emptied= check
Gas Cap Check Ball removed= check
New 93 Octane Gas= check
SeaFoam Added To Gas= check
PetCock pulled and Check= check

Engine driven for 1 to 1 1/2 hours with no problems= Check
Engine sat off for approximately 1hr and then driven again....Hesitates and Coughs and stalls on me. Sit for a couple of minutes and it starts right back up and I go straight wishing I had never bought this thing. I have spent more time messing with this thing then riding it. Im bout over it. Where do I go from here?
 
Advodka

Advodka

Active Member
I maybe wrong but it sounds like a spark problem more than a fuel problem. I may have missed reading if you already have but drop your float bowl and clean it good. Sounds like you have done everything else so if you still have the problem I would look at you ignition system.

* Check for good connections on all your plugs.
* Check battery terminals and make sure they're tight.

Just my $.02, I would check the ignition switch and connections between the tanks for rub spots and coat the connections with dielectric grease.

Good Luck.
 
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