You need a digital manometer. About £30 on eBay . Must measue down to kPa levels. That is babies kisses for pressure. No mech's vacuum will do. Use on your PCV too.
Mine is this:
http://www.ebay.co.uk/itm/w-Dual-LCD...MAAOSwLN5Wijt7
Measure a max of 2-3psi. Much over 5psi f*cks 'em.
I only have the CNG pressure, I do know the LPG differs, lower I think. I know it's pretty critical and that all bemaon it, 'cos the Necam system runs far lower pressure than most gas systems. hence you can't put any old regulator on to replace. If I can find it, I'll look it up.
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Bifuel V70 Classic 1999 [The Old Grumpy in the Corner, "When I was a lad... blah, bl**dy blah."]
Last edited by CNGBiFuel; Nov 2nd, 2016 at 10:34.
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