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The fuel pump should also run while the engine is cranking. if the relay is energising (clicking), it means that the ECU is operating it. You...
I would suggest checking that the wiring for the neutral light isn't shorted to earth (trapped or via removed wire insulation). Maybe the plunger...
Sounds like it could be lean at closed throttle. Has the idle mixture been set up with the throttle body bleeds and the mixture trimmer on the ECU?
Isn't the 17 the diameter of the bore, and the 18/20 the lever pivot distance?
Yes, that's good - but as I mentioned the fault I had was with one of the terminals in the coil plug not gripping the terminal in the coil, and...
I had a strange intermittent misfire on my ST4s that was caused by a terminal in one of the coil plugs (Low Tension side, the one from the ECU)...
What AFR are you reading for an idle mixture? If enriching the idle is helping to increase idle speed, then I'd suggest the idle mixture is still...
The engine has probably stopped with one exhaust valve open. So what you're seeing could be the last fuel/air charge making it's way out.
The number of teeth on the belt has nothing to do with the valve timing. That's purely controlled by the number of teeth on the driving and driven...
If it's the same bore as an ST4s, it's 8mm or 5/16". I recently bought some to replace my lines, but struggled to find some good stuff with...
I think they are called an ITT Canon Sureseal. https://www.ittcannon.com/products/sure-seal/
I have the standard bolts. Looking again this morning, there are witness marks from the bolts left on the carrier, and I can feel slight drag as...
Hi all, Looking for a serviceable brake disc for my ST4s, I believe that these are standard fitment on virtually every 80s/90s/00s Ducati apart...
Hi All, Hope someone can help me - I need an exhaust valve cover for the horizontal cylinder on my ST4s, after I stupidly broke one of the oil...
Hi there Esbee, I'd like this please. How much would postage be to Basildon, Essex?
I found an online version of the service manual It states that the official procedure for setting the valve timing after belt replacement is to...
If it were mine I'd be looking at used parts. I'd be surprised if it needed a complete head - and would be asking what components you could use...
The pulleys are in two halves. The inner half is held to the cam by the centre nut. The outer half is driven by the belt, and the three bolts hold...
Glad you got it running again! Whist you have all the panels off, or maybe next time you have the panels off, maybe give all of the connectors...
I have an '03 registered ST4s (I guess it's technically a 2002 bike) and it doesn't have the auto-start or "Servo-Start" function. The only time...
