Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[mondeoman]

Forgive the intrusion of a mondeo driver but I'm looking for some assistance with a Stag 300-4 LPG System, which I believe a number of people here use in their Omegas.

I have replaced a faulty front end with the Stag Kit, but I'm havuing trouble adjusting the reducer pressure. the turnscrew on the front of the regulator seems to have little of no effect to the pressure displayed on the software.

Has anyone had a similar experience, the pressure displays at arounf 0.6 bar, what do you run at?

I used to drive an Omega before moving to the Mondeo. If anyone is contemplating the same move take my advice and stick with the Omega, I wish I had!

[Kevin Wood]

The adjustment is quite fine so it needs a few turns to make much difference. Screw the allen bolt in (clockwise) to increase pressure. Also, you'll need the car running on gas before the change will be visible as otherwise the tank valve will be closed. Ideally, recalibrate the system after each adjustment.

Ideal pressure depends on the jet diameter as opposed to the engine power, but I would say 1 bar is a good starting point. If you start to run out of injector duration at full throttle perhaps increase it to 1.25. If you still haven't got enough fuel drill out the nozzles a bit larger.

You don't say what engine size you have but I'd say 2.5mm nozzles for a 1.8 and perhaps 2.7 for a 2.0 would be a good starting point.

Also check that the pressure doesn't drop off excessively on full load.

These kits are normally supplied with the vapouriser set to 0.8 BAR which is a bit low IMHO.

Kevin

[mondeoman]

Thanks Kevin, that's really useful advice. It may well be that I haven't turned the adjuster far enough as I was concerned about trying to adjust it too much and doing damage.

This seems to have been preset at .6 bar, I was expecting to need .9 - 1 bar on my 1.8 mondeo, which has as you suggest 2.5mm injector nozzles. That would seem to be correct based on the power per cylinder info supplied with the kit.

The default setting on the software is to switch to petrol at 0.6 bar, so as soon as I switch over the system switches back.

I'll try adjusting it further.

[Kevin Wood]

Yep, I'd say it'll need a couple of turns of that adjuster.

Kevin