BUT if it's clear (and i don't no owt about bikes) when the looms disconnected at the ecu then I'd suspect the internal ecu transistors the do the switching
Sorry i hope it's not that.
Right then,
Gonna need some help here! Just bought a 2001 Honda VFR800 as a project bike - its been mucked around with it bit but getting to the bottom of the
matter it doesnt start.
There is no spark and the "FI" light is on.
Fuel pump doesnt prime when the ign is first turned on which it should - and heres the weird bit - if you just leave the ign on and scratch your head
(believe me Ive tried!) it clicks a bit and then the fuel pump runs for a few seconds - during which time its filled one of the front cylinders with
fuel!
Whats going on? Have checked the resistance of the injectors and they are all within range + ive tested virtually all of the sensors and they are also
within range.
Any help extremely gratefully received!!
Geoff
Fuel rail pressure switch cut out?
Having a haed that clicks can't be helping...
Have you whipped the injextor out and tried them?
Cheers for the suggestion - no I havent taken the injectors out - the reason being I can't connect the tank and take the injectors out at the
same time owing to the HP fuel hose being really short.
Also - just checked the wiring diagram and there isnt a pressure "swtich" as such - just a regulator on the end of the fuel rail.
Geoff
Ok, after a bit more poking around - the injectors are constantly open when connected to their harness.
I have yet to discover whether they are doing this because they're being told to by the ECU or there is a short in the wiring...
A job for tomrrow perhaps!
(Hope it is the ECU - Ive just ordered another one and it wasnt cheap!!)
Geoff
quote:
Originally posted by jambojeef
during which time its filled one of the front cylinders with fuel!
It's normal for the inj to be switched negative through the ecu. Easy enough to unplug the loom ???? If so meter between the inj neg and ground
if it reads clear your OK if not you've got a short.
BUT if it's clear (and i don't no owt about bikes) when the looms disconnected at the ecu then I'd suspect the internal ecu transistors
the do the switching Sorry i hope it's not that.
quote:
(Hope it is the ECU - Ive just ordered another one and it wasnt cheap!!)
Geoff
quote:
Originally posted by omega 24 v6
It's normal for the inj to be switched negative through the ecu. Easy enough to unplug the loom ???? If so meter between the inj neg and ground if it reads clear your OK if not you've got a short.
BUT if it's clear (and i don't no owt about bikes) when the looms disconnected at the ecu then I'd suspect the internal ecu transistors the do the switching