- Posts
- 3,275
- Location
- Rushden, Northants, UK
Sorry, Martyn, you are wrong. Petrol does not provide any lubrication in a fuel injected engine.
Peter
Does your landy start ok on LPG ??
- Thread starter JohnLRV8
- Start date
This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
Sorry, Martyn, you are wrong. Petrol does not provide any lubrication in a fuel injected engine.
Peter
my understanding is petrol provides zero lub for the engine..all it does is provide some protection for the valves/seat bases due to additives...
having said that there are reasons why one should start on petrol when engine coolent cold..and thats vaporiser freezing up..and far too rich a gas mixture..
i have wideband o2 meter installed and it DID show off the scale richness if starting on gas untill coolent warms up abit...
however since i running full sequential petrol and gas with both controlled by megasquirt 3x i have the faclity to weaken gas injection times in relation to gas temp to keep it at 15.6 or so..plus of course i run varstly different ignition timing curves for each fuel..
still it dont run happy on gas till vaporiser is warm, i give it a mile or ao in winter, but in summer no probs..
i find open and closed loop systems are very different, open loop is much more tolerent of cold starts as long as back fires can be elliminated
having said that there are reasons why one should start on petrol when engine coolent cold..and thats vaporiser freezing up..and far too rich a gas mixture..
i have wideband o2 meter installed and it DID show off the scale richness if starting on gas untill coolent warms up abit...
however since i running full sequential petrol and gas with both controlled by megasquirt 3x i have the faclity to weaken gas injection times in relation to gas temp to keep it at 15.6 or so..plus of course i run varstly different ignition timing curves for each fuel..
still it dont run happy on gas till vaporiser is warm, i give it a mile or ao in winter, but in summer no probs..
i find open and closed loop systems are very different, open loop is much more tolerent of cold starts as long as back fires can be elliminated
