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Discussion Starter · #1 ·
Hi All,

New here with a new to me Ducati ST2 2002, lovely looking bike. lowish kms.

Just picked up a used one, which has a couple issues, and I intend to try to do most of the work myself, as I can't really afford a ducati specialist.

First up, the guy had it sitting for a couple months and just started it occasionally. He filled the tank with old fuel from a spare before I took it. ( premium fuel). There had been some flooding of the spark plugs, possibly from a leak at the fuel tank? Still need to work out where that comes from, but when tank lifted it leaks at the back / cover

Anyway, when i leave with the bike, the bike feels as powerful as a scooter. Really, absolutely pathetic. Long story short, due to the fuel loss ( about 2x quicker than it should be because of the leak) I fill the tank a few times with premium fuel and the bike does start to run a little better, more like perhaps a 250 rather than a 50cc scooter. But really, nothing like a 944cc ducati should feel like. I rode 700 kms home, it coped fine, not overheating, all good, other than the fuel disappearing quickly (leak) and the really weak power. It would feel fine cruising at 100 kmph, but i wouldn't even dream of drag racing a car at the lights or overtaking.

Any ideas if there is a common issue which causes just total anaemic power, and no other symptoms? I managed to get up to 120kmph in aero position, but it was like i was on a 125cc trail bike and screaming it to get there... ?

Any advice, help, suggestions appreciated. thanks.
 

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There are guys smarter than me here that may have the answer, but my buddy's ST4 was doing the same thing. We thought that someone had installed a cam belt one tooth off but we found that the fuel system in the tank was a mess. The in tank fuel lines had been replaced with non- submersible lines that don't stand up to fuel long term. See the post here:
https://www.ducati.ms/forums/241-tech-forum/720853-st4-tank-fuel-hose.html

I believe the ST2 has the same or a similar fuel system. It could also be a fuel pump not delivering the right pressure. Empty the tank and look inside with a flashlight is the first step.
 
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Hi Rik, welcome to the forum. You will get more answers by posting this in the Sport Touring section.

Also, could you take a sec and fill out your location information and add your new ride to your Signature line...and enjoy the Ducati!
 

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Discussion Starter · #4 ·
Well - great news! I took it to my Ducati man, who had a quick look, swapped a spark plug and bingo! --- It was only firing one cylinder, hence the poor power and fuel economy, and me not having ridden one before didn't have a yardstick to compare it against. Now it is firing on two cylinders it feels as it should and sounds a lot better. Need to sort out the speedo / odo, drain some oil ( the seller had filled to totally full above widow) and clean it all as oil was coming out the breather. But thanks for the replies and advice, really appreciate a place like this with helpful folk. Cheers all, have beer on me!
 

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ha ha. I was going to ask 'silly question but, is it running on both cylinders?' glad it was an easy/cheap fix.
 
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