right, im stuck! I have a vfr 800fiw. Its all hooked up on the bench, except the radiators. pretty sure everything i need to is wired around. It turns
over, but it just wont fire! I have a clear fuel filter and even tho the pump is runing, its not taking any in, so im thinking its the ecu. In the
haynes there is a fault checker but when i bridge the connector and run it, instead of flashing a code the light just comes on, which it suggests is a
dodgy ecu. Does anyone have any ideas?! Do you know if i can take the ecu to a honda garage for a check? unlikey to be a physical blockage is it?
any ideas welcome, im seriously running out!!
tom
I'm far from an expert but surely if the pump is running and its not taking any fuel does it not suggest a leak in the line somewhere and its
taking air in there?
There is another possibility although I don't know how feasible it is. Is it possible the polarity for the pump has been reversed and the pump is
pumping the wrong way?
Hope this helps but it may just be the mindless rambling of an idiot....
ive tried taking the fuel line off and it pumps thro so im pretty sure the pump polarity is fine. will check again for leaks but i think its ok. As i say, the level of fuel in the filter isnt dropping at all so i dont think any is going thro.
i know the vfr 800 1998 circuit on my thumb i also know the mcu realy good!
i bet its the pump. My sierra pump also sounds right when polarity is wrong.
but offcourse it doesn´t move any petrol.
Tks
Im sure you've tried this already but - is the fuel pressure regulator working properly?
Obviously if it was just letting petrol recirculate there would be no fuel pressure and the injectors would actually inject anything
Geoff
was reading the service guide last nite, it reckons the fuel pump needs to be kicking out 36psi at idle. Havent checked but im pretty sure mine will
be no where near that! Thats some serious pressure. Im thinkin investment in a new pump is my new plan of attack.
surely it cant just be that simple!
You call that simple?
quote:
Originally posted by en0tdc
was reading the service guide last nite, it reckons the fuel pump needs to be kicking out 36psi at idle. Havent checked but im pretty sure mine will be no where near that! Thats some serious pressure. Im thinkin investment in a new pump is my new plan of attack.
surely it cant just be that simple!
If in doubt, you could try what I'd do (at your own expense of course
), and that'd be to chuck a couple of squirts of petrol into engine
via inlet. If it fires, you should have an idea where to start looking, if not look elsewhere.
ATB
Simon
quote:
Originally posted by Simon
If in doubt, you could try what I'd do (at your own expense of course
ATB
Simon
quote:
Originally posted by ChrisGamlin
The pressure your talking about there is about what you need for throttle bodies (fuel injection) which I assume you engine is? If you've got a fuel pump from a carb'd engine though, then it will only be pumping a couple of psi at most, so as you say won't be anywhere near what you need.
Chris
[Edited on 5/7/06 by ChrisGamlin]
with carb pump there is no pressure...!!
On my VFR i mounted a Sierra Fuel injection pump complete with its bracket...from the donor!
regards,
Tks
p.s. needless to say that it works a thread!
cheers guys, next question, is more pressure a problem? Will the pressure regulator deal with it and just dump it or will it put a shed load into the
cylinders!? I had a quick look on ebay and t seems to range from smal ones to uber powerful ones with not much in the middle!
cheers again!
tom
is from the 2.0 litre sierra
its the bosch one..wich has also a regulator on top of it.
the pressure values are just maximum if you are not giveing the pump the change to reach it their is no problem.
If i was you i would just take some tools to the scrapyard and take the bosch items back to home.
the sierra pump works fine! also take with you the connectors and some wire to make the enlargement.
TKs
p.d. Wich year is your vfr? mine is from 98