New owner if a 2005 ST4S with 5,300 mi - Ducati.ms - The Ultimate Ducati Forum
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post #1 of 15 (permalink) Old Jan 8th, 2017, 2:08 pm Thread Starter
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New owner if a 2005 ST4S with 5,300 mi

Recently bought a 2005 ST4S with 5,300 mi. from Eurosport Motors in Fort Worth, TX. Only service history is belt change a year ago ( it was a consignment sale). Runs great, but backfires excessively and stalls often on deceleration to a stop. Has Remus Titanium pipes. Any suggestions for curing either irritating problems?
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post #2 of 15 (permalink) Old Jan 8th, 2017, 3:07 pm
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At 5300 miles, the only service that would have been due is an oil change or two and the belts because of the time component (6K miles or 2 years).

Might as well get the 6K mile service taken care of. The stumbling issue you describe should be easily taken care of with a good base line set up, which includes setting the TPS, vacuum balance of the throttles and setting CO via the fuel trim, accessible by software only on your model, and the tweaking the air bleeds for both CO and idle speed. This should be done with the service, which at 6K miles also includes checking and setting valve lash.

This has been covered in grueling detail over the years and many here do the work themselves, but taking it to a good shop is a viable option if you understand the cost involved. It's a time consuming process and labor rates will add up.

Read this to understand what's required of the base line tune. BikeBoy.org - Ducati 4V Desmoquattro Non Linear TPS Baseline Adjustment (plus ST3). It's not hard at all if you're decent with a wrench and understand what you are trying to achieve with each adjustment. You will need access to the software required to get at the fuel trim adjustment, and having a means to measure CO is a definite plus, but many go at it without. There is a procedure written somewhere that helps you get close "by ear".

The other thing you may consider if you want to get the most out of those pipes is have the race map flashed on to your ECU. You may even find it is already on there, but the PO didn't bother to do a proper baseline set up.

A proper base line set up will make these bikes run like silk, even at low revs. It is a must do.

Welcome to the forum.

Ooops! Edit: Belt change is 12K miles or two years!
Stick, cagivaduc, 44Dwarf and 1 others like this.

Dan.
2001 900SSie (gone, but not forgotten)
2003 ST4s (The Truck)
1995 916 (Junk Yard Dog)

Last edited by SS904; Jan 9th, 2017 at 7:27 am.
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post #3 of 15 (permalink) Old Jan 9th, 2017, 10:38 am
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I highly recommend the shop @ AMS Ducati in Dallas. We live in Tulsa and take our 3 Ducs to AMS for service.

2012 Multistrada S Touring, Full Termi System,
2010 848 Hayden SE Full Termi system,
2004 BMW R1100S BCR, Ohlins & Staintune,
2010 Vespa GTS 250ie.
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post #4 of 15 (permalink) Old Jan 9th, 2017, 11:56 am
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I've had service done at Eurosport (where you bought it) and they do a fine job also.

bob

Ducati ST4s (gen II) {Duc 900 SS-SP gone but not forgotten}
Husaberg FE 400
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post #5 of 15 (permalink) Old Jan 9th, 2017, 12:16 pm
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Bite the bullet one time and get a good baseline with a shop tune to address issues. Get the LT Snyder book and start to keep up with it. Biting off a huge chunk of maintenance on a new to you bike will be a downer and could end up with it parked in the corner of the garage. Nice (top of the line) machine and few miles, just about new.

You'll enjoy it for sure.

S

2002 ST4s, Carrozzeria, Traxxion Dynamics, AL FW,
2003 ST4$ in second fastest color, Red !!
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post #6 of 15 (permalink) Old Jan 9th, 2017, 12:53 pm
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Quote:
Originally Posted by Ralph29 View Post
Recently bought a 2005 ST4S with 5,300 mi. from Eurosport Motors in Fort Worth, TX. Only service history is belt change a year ago ( it was a consignment sale). Runs great, but backfires excessively and stalls often on deceleration to a stop. Has Remus Titanium pipes. Any suggestions for curing either irritating problems?
Have you brought this issue up with the good folks at Eurosports?
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Tom
Sophia, 2001 ST4 (Ohlins, Race Tech, Cycle Cat, Russell, etc).
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post #7 of 15 (permalink) Old Jan 10th, 2017, 12:35 pm
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Yeah, I have same year and slip on's. I didn't see any of your issues with putting on slip on's until changing out ECU to open air box, which does require all of Dan's recommendations. Once done, it now runs fine. Could be that yours is re-mapped without the same follow up work or just needs to be done for baseline. Either case, worth the expense to have it done by competent shop.

Don

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post #8 of 15 (permalink) Old Jan 13th, 2017, 3:05 pm Thread Starter
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Dan,
Thanks for the thorough response to my post. I have read the bikeboy article and think it is beyond my capabilities. I hope to find a trustworthy shop in Houston to do the job. It is a long drive to Dallas-Fort Worth.
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post #9 of 15 (permalink) Old Jan 13th, 2017, 3:43 pm
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I'm sure someone will give opinion of service at Houston Super Bike. Hopefully it should be close to you.

S

2002 ST4s, Carrozzeria, Traxxion Dynamics, AL FW,
2003 ST4$ in second fastest color, Red !!
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post #10 of 15 (permalink) Old Jan 13th, 2017, 4:11 pm
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Don't know how Houston Superbikes are regarding service, but I do know they were one of the first to crack the code on flashing these ECUs! There was a time where our only option was getting a Power Commander or dumping $1000 plus into a Ducati Performance ECU, if one was offered for your bike. I have had a HSB reflashed ECU for several years now and it is perfect.

Dan.
2001 900SSie (gone, but not forgotten)
2003 ST4s (The Truck)
1995 916 (Junk Yard Dog)
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