Thread: so whats the deal with this fuel consumption?

1. 2. 3. could all have a bearing on extra milage.

1. Possibly a different mix of LPG. More or less butane

2. Allowed your motor to breath easier. Cleaner air , less restriction = more power etc

3. Colder air means = densior air = more power . you dont have to put your foot down as much.

Gary

perhaps LPG has different blends of bit and pieces from different suppliers.

I met a guy who worked for BP. And this relates to diesel, but he said I'd probably go further on Caltex than BP, but BP would burn cleaner. The Caltex was denser with a bit more oil in it. He was only talking maybe 20klm over a tank.

Your LPG mixture is determined by the total vacuum generated by ALL the components from the mixer head to the air cleaner inlet. Therefore a lower restriction air box will cause leaner mixtures. My conclusion is that it was running too rich overall before the Big Bang. Fix the box or replace it with an early steel cylinder cleaner. Set your plug gaps to 0.7mm, your idle timing to 10 degrees BTDC minimum, and then find the main mixture adjuster and have a bit of a play. Find the minimum setting that allows nearest to full power.

Some lpg is light, and some is heavy. They can't guarrantee the butane/propane mix in the lpg. It's good when you get a heavy batch and crap when you get an extra light batch. Most of the time you just get normal

I used to get varying fuel consumption in the old Falcon I had on LPG. I certainly found keeping a fresh, clean air filter made a difference.

so remove old airbox and replace with a sock ?

BTW I have replaced the filterbox with something "different" if it works out K I will post a pic or two soon.

I have been meaining to check for 10BTDC for ages :/

Originally Posted by HangOver

BTW I have replaced the filterbox with something "different" if it works out K I will post a pic or two soon.

I have been meaining to check for 10BTDC for ages :/

So long as its not a pod filter. They aren't good to MAFs. Get an early steel air filter can and use paper filters. Then TUNE IT UP properly!