Hi,
been having some fuelling issues & believe it may be to do with the regulator.
I have ZX6 carbs on 2 litre Pinto and the fuelling is via an electric pump (sorry, no idea what one - been a long time since I bought it and no
identification on it) and the filter/regulator. This setup worked fine when I had twin webers but now I'm getting what seems to be
starvation.
The issue is that I've tried increasing and decreasing pressure (on a trial & error basis) without it seeming to make any difference.
Any idea's?
What pressure should I be setting?
Which way does the adjuster on top of the regulator need to be turned to increase/decrease pressure? I ask as I have the instructions in front of me
which says that its clockwise to increase pressure, but read on another forum that its anti-clockwise!!
Cheers
Ray
It is clockwise to increase filter king pressure, I was checking mine at the weekend.
What angle are your carbs at, ideally similar to their orientation on the bike?
Have you had them re-jetted? 150's approx for a 1.8 160 - 170 for the 2.0L?
What about float levels, have you checked those?
If your setup fed webers it will feed bike carbs with no problems, bike carbs need about 1.5 - 2 psi, webers 3-4.
thanks for the quick response pete - the carbs & manifold were supplied by Bogg Bros, so assume all is ok on that front. How would overfuelling
manifest itself - would I be seeing fuel leaking from the carbs?
Cheers
Ray
You'd only see overflowing fuel if the float valves weren't shutting off, as they're from boggs I'd assume all is ok in that
area.
Have the air correction jets been blocked? on the filter side of the carb, its the middle brass lined drilling, about 3mm dia.
Without them blocked on my old kawasaki carbs, progression from primary to main was very poor.
Not sure about the correction jets - will check tomorrow. Thanks for the tips.
Ray
as it run ok with this pump/carb set up ?
you may well find it will run much better with a bike pump, the pressure required is so low the reg often restricts flow to much when set to give
such a low pressure|?
Ditto what Jon says - I put bike carbs on my x-flow, and couldn't get them to work properly with the Facet pump and a Filter King regulator. You
just can't get low pressure combined with a high flow rate.
When I put a bike pump on with no regulator it just worked - plain and simple.
We've had issues with bike carbs and a Filter King, ditched it (and the Facet pump) in favour of a matched bike fuel pump, that sorted out the
overfuelling problem we had but then......
read http://www.locostbuilders.co.uk/forum/9/viewthread.php?tid=136178
To cut it down, check the jets in your carbs
[Edited on 31/5/10 by norfolkluego]
thanks for all the suggestions - I think I'll give the bike pump a go.
It seems that zx6 pumps are located in-tank - which external pumps will be suitable?
Cheers
Ray
I run my bike carbs, (R1) with the standard pinto pump, a filter king with the screw almost falling out, and its fine. What colour are your plugs? is it lean? have you tried lifting the needles? I assume you have syncronised the carbs.
quote:
Originally posted by rsmith95uk
thanks for all the suggestions - I think I'll give the bike pump a go.
It seems that zx6 pumps are located in-tank - which external pumps will be suitable?
Cheers
Ray