Ducati Monster Forum

Moto Board => Tech => Topic started by: SaltLick on March 21, 2009, 03:20:57 PM

Title: Bike wont start after taking the tank off and draining the gas.
Post by: SaltLick on March 21, 2009, 03:20:57 PM
I took my tank off to have it welded and repainted about 3 months ago. I just put the tank back on, and put a gallon of gas in it.  Does it take a while to start it again? Is one gallon of gas enough in the tank or should i put more? It wont start, ive tried about 4 times now.
Title: Re: Bike wont start after taking the tank off and draining the gas.
Post by: Popeye the Sailor on March 21, 2009, 04:00:42 PM
I would expect one gallon to be enough.


Do you hear the fuel pump come on when you turn the key on?



Year and model would help  :)
Title: Re: Bike wont start after taking the tank off and draining the gas.
Post by: SaltLick on March 21, 2009, 04:03:49 PM
i Just went down and bought another gallon and put it in, still no go. its a 2002 M750. Fuel injected. I just tried it about 15 times it aint startin. Wonder what i did wrong.  Crap it figures. Yeah i hear the fuel pump come on every time i turn the key. Wonder if i got the two fuel lines switched around. Someone had labeled them before with sticky tape reading R and M, i figured that meant return and main.
Title: Re: Bike wont start after taking the tank off and draining the gas.
Post by: Howley on March 21, 2009, 04:07:09 PM
Check the fuel filter, check for kinked lines. Does it make any sounds like it's even trying to start?
Title: Re: Bike wont start after taking the tank off and draining the gas.
Post by: SaltLick on March 21, 2009, 04:16:16 PM
i just checked again. I have the fuel lines hookup up backwards to the tank........dam i thought i had checked that for sure.

Now, whats the best way to swap those lines without spilling gas all over the bike, i forget do they both spill out gas when you unhook them? crap. I dont want to have to drain all that gas out all over again.....why oh why.
Title: Re: Bike wont start after taking the tank off and draining the gas.
Post by: Popeye the Sailor on March 21, 2009, 04:34:49 PM
Quote from: SaltLick on March 21, 2009, 04:16:16 PM
Now, whats the best way to swap those lines without spilling gas all over the bike? ha ha

I think Rameses had some sort of method for that.


Find out what it is, and avoid it  :P
Title: Re: Bike wont start after taking the tank off and draining the gas.
Post by: ducpainter on March 21, 2009, 04:43:38 PM
The return dumps the fuel. The feed doesn't.

Title: Re: Bike wont start after taking the tank off and draining the gas.
Post by: SaltLick on March 22, 2009, 04:49:21 AM
Quote from: ducpainter on March 21, 2009, 04:43:38 PM
The return dumps the fuel. The feed doesn't.



Did i mess anything up by hooking them up backwards?
Title: Re: Bike wont start after taking the tank off and draining the gas.
Post by: Ddan on March 22, 2009, 04:53:35 AM
Quote from: SaltLick on March 22, 2009, 04:49:21 AM
Did i mess anything up by hooking them up backwards?
Just your day.   
Title: Re: Bike wont start after taking the tank off and draining the gas.
Post by: SaltLick on March 22, 2009, 05:09:41 AM
Quote from: Dan on March 22, 2009, 04:53:35 AM
Just your day.   

ha ha exactly, now i gotta drain the tank all over again.
Title: Re: Bike wont start after taking the tank off and draining the gas.
Post by: DucHead on March 22, 2009, 05:17:20 AM
While you're at it, cut out a sections of each fuel line and install some quick disconnects.  Install them in opposite orientations, and you'll never make the mistake of reversing them again.  [thumbsup]
Title: Re: Bike wont start after taking the tank off and draining the gas.
Post by: herm on March 22, 2009, 09:37:56 AM
^what he said^
Title: Re: Bike wont start after taking the tank off and draining the gas.
Post by: JDucati on March 22, 2009, 01:38:36 PM
Salty just get some towels and a friend to clog the fuel return hole with their finger and swap the lines... no need to drain it again.

I just did the same thing you did when i put my tank back on a couple weeks ago.

Was easy.

~JD
Title: Re: Bike wont start after taking the tank off and draining the gas.
Post by: Gimpy on March 22, 2009, 02:34:39 PM
Quote from: pompetta on March 22, 2009, 05:17:20 AM
While you're at it, cut out a sections of each fuel line and install some quick disconnects.  Install them in opposite orientations, and you'll never make the mistake of reversing them again.  [thumbsup]
Being a big fan of the unnecessary I like this idea, but the practical cheap bastard side of me can't justify it. How often do you remove the tank?  My tank is off now while I get the right feeler gauges to check the valves. I can't imagine needing to remove the tank more than once every few years maybe more.  This is the first time in two years of owning the thing that I have needed to.   Hmmmm   ??? 

Oh and for the the sake of search and possibly unnecessary information the R stands for Ritorno and the M stands for Mandata which is itailian for the obvious   8) 
(Return - Send (delivery))
Title: Re: Bike wont start after taking the tank off and draining the gas.
Post by: Ddan on March 22, 2009, 02:43:58 PM
Quote from: Gimpy on March 22, 2009, 02:34:39 PM
Being a big fan of the unnecessary I like this idea, but the practical cheap bastard side of me can't justify it. How often do you remove the tank?  My tank is off now while I get the right feeler gauges to check the valves. I can't imagine needing to remove the tank more than once every few years maybe more.  This is the first time in two years of owning the thing that I have needed to.   Hmmmm   ??? 

Oh and for the the sake of search and possibly unnecessary information the R stands for Ritorno and the M stands for Mandata which is itailian for the obvious   8) 
(Return - Send (delivery))
+1  I have my tank off once a year to check valves (gotta do something in the winter) and I haven't yet felt I needed to spend money on these.  I'm sure they're handy as hell but I've heard enough complaints of leaks and torn o-rings that I'd just as soon siphon the tank and deal with it that way.
Title: Re: Bike wont start after taking the tank off and draining the gas.
Post by: SaltLick on March 22, 2009, 04:32:05 PM
Quote from: JDucati on March 22, 2009, 01:38:36 PM
Salty just get some towels and a friend to clog the fuel return hole with their finger and swap the lines... no need to drain it again.

I just did the same thing you did when i put my tank back on a couple weeks ago.

Was easy.

~JD

yeah i said F$CK it this morning and just went for it with the tank still full of gas. just put a towell down and pulled the main off first since there was no gas coming out of that one then said okay 1...2...3!! and pulled the return off and shoved the main line on there. Man the gas really comes pouring out quick so you gotta be ready. No big deal was done in 10 minutes. Started right up first try!!

whats up now pregnant doges im ready to ride!!
Title: Re: Bike wont start after taking the tank off and draining the gas.
Post by: DucHead on March 22, 2009, 05:22:28 PM
Quote from: Gimpy on March 22, 2009, 02:34:39 PM
Being a big fan of the unnecessary I like this idea, but the practical cheap bastard side of me can't justify it. How often do you remove the tank?  My tank is off now while I get the right feeler gauges to check the valves. I can't imagine needing to remove the tank more than once every few years maybe more.  This is the first time in two years of owning the thing that I have needed to.   Hmmmm   ??? 

Oh and for the the sake of search and possibly unnecessary information the R stands for Ritorno and the M stands for Mandata which is itailian for the obvious   8) 
(Return - Send (delivery))

Jeezus, they're like $30.  If your budget is that tight, then take the bus.   [laugh]

I've had my tank of at least a dozen times over a four-year period make the beast with two backsing around with one thing or another.  The quick disconnects are one less pain in the ass, and the tank comes of in about 67 seconds with no spilled fuel and no swapped lines.
Title: Re: Bike wont start after taking the tank off and draining the gas.
Post by: ducatiz on March 22, 2009, 05:49:35 PM
Quote from: pompetta on March 22, 2009, 05:17:20 AM
While you're at it, cut out a sections of each fuel line and install some quick disconnects.  Install them in opposite orientations, and you'll never make the mistake of reversing them again.  [thumbsup]

i am about to do some work on my bike, do you have a linky for these?
Title: Re: Bike wont start after taking the tank off and draining the gas.
Post by: DucHead on March 22, 2009, 05:50:54 PM
Quote from: ducatizzzz on March 22, 2009, 05:49:35 PM
i am about to do some work on my bike, do you have a linky for these?

I got mine from Omega.com

I'll see if I can find the items...

Here are the part numbers and prices for the chrome-plated brass couplings:
FT-LCD170-05: $18
FT-LCD220-05: $11.15

They also sell plastic ones which are less expensive.

Omega is a great company from whom to order...fast shipping and great customer service.
Title: Re: Bike wont start after taking the tank off and draining the gas.
Post by: ducatiz on March 22, 2009, 05:52:01 PM
Quote from: pompetta on March 22, 2009, 05:50:54 PM
I got mine from Omega.com

I'll see if I can find the items...

thanks mang. .  will help me a lot, i hate draining the tank and i seem to be taking the damn thing off a lot lately..

i did see them in motion pro's catalogue, but they are inch sized, what size did you use?
Title: Re: Bike wont start after taking the tank off and draining the gas.
Post by: DucHead on March 22, 2009, 06:02:19 PM
Part numbers in my last post.  ;)

Hose barbs are for 5/16" fuel line.
Title: Re: Bike wont start after taking the tank off and draining the gas.
Post by: ducatiz on March 22, 2009, 06:13:24 PM
sweet... thanks
Title: Re: Bike wont start after taking the tank off and draining the gas.
Post by: JDucati on March 22, 2009, 10:48:11 PM
Quote from: SaltLick on March 22, 2009, 04:32:05 PM
yeah i said F$CK it this morning and just went for it with the tank still full of gas. just put a towell down and pulled the main off first since there was no gas coming out of that one then said okay 1...2...3!! and pulled the return off and shoved the main line on there. Man the gas really comes pouring out quick so you gotta be ready. No big deal was done in 10 minutes. Started right up first try!!

whats up now pregnant doges im ready to ride!!

Glad to hear you got it done man.  I am ready to ride.  [moto] The weather isn't.  [bang]

~JD